From e9cd798bd372741753efcba2af594b00fe7b8437 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 00:58:58 -0800
Subject: [PATCH 001/140] adding volume type

---
 other/java/client/src/main/proto/filer.proto  |   6 +-
 weed/command/benchmark.go                     |   3 +
 weed/command/filer_copy.go                    |   4 +
 weed/command/filer_sync.go                    |  12 +-
 weed/command/mount.go                         |   2 +
 weed/command/mount_std.go                     |   8 +
 weed/command/upload.go                        |   6 +-
 weed/filer/entry.go                           |   1 +
 weed/filer/entry_codec.go                     |   2 +
 weed/filesys/wfs.go                           |   3 +
 weed/filesys/wfs_write.go                     |   1 +
 weed/operation/assign_file_id.go              |   5 +
 weed/operation/submit.go                      |   8 +-
 weed/pb/filer.proto                           |   6 +-
 weed/pb/filer_pb/filer.pb.go                  | 797 +++++++++---------
 weed/pb/master.proto                          |   5 +-
 weed/pb/master_pb/master.pb.go                | 603 +++++++------
 .../replication/sink/filersink/fetch_write.go |   1 +
 weed/replication/sink/filersink/filer_sink.go |   5 +-
 weed/server/common.go                         |   1 +
 weed/server/filer_grpc_server.go              |   6 +-
 weed/server/filer_server_handlers_write.go    |   8 +-
 .../filer_server_handlers_write_autochunk.go  |   1 +
 .../filer_server_handlers_write_cipher.go     |   1 +
 weed/server/master_grpc_server_volume.go      |   8 +-
 weed/server/master_server_handlers_admin.go   |   8 +-
 weed/server/webdav_server.go                  |   2 +
 weed/storage/volume_info.go                   |   1 +
 weed/storage/volume_type.go                   |  23 +
 weed/topology/collection.go                   |   8 +-
 weed/topology/topology.go                     |  16 +-
 weed/topology/topology_event_handling.go      |   4 +-
 weed/topology/topology_test.go                |   2 +-
 weed/topology/volume_growth.go                |   1 +
 weed/topology/volume_layout.go                |   4 +-
 35 files changed, 830 insertions(+), 742 deletions(-)
 create mode 100644 weed/storage/volume_type.go

diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index c046e48f3..ba49e420f 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -156,6 +156,7 @@ message FuseAttributes {
     repeated string group_name = 12; // for hdfs
     string symlink_target = 13;
     bytes md5 = 14;
+    string volume_type = 15;
 }
 
 message CreateEntryRequest {
@@ -220,6 +221,7 @@ message AssignVolumeRequest {
     string data_center = 5;
     string path = 6;
     string rack = 7;
+    string volume_type = 8;
 }
 
 message AssignVolumeResponse {
@@ -270,11 +272,9 @@ message StatisticsRequest {
     string replication = 1;
     string collection = 2;
     string ttl = 3;
+    string volume_type = 4;
 }
 message StatisticsResponse {
-    string replication = 1;
-    string collection = 2;
-    string ttl = 3;
     uint64 total_size = 4;
     uint64 used_size = 5;
     uint64 file_count = 6;
diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 080312aa8..7a112d1ec 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -35,6 +35,7 @@ type BenchmarkOptions struct {
 	sequentialRead   *bool
 	collection       *string
 	replication      *string
+	volumeType       *string
 	cpuprofile       *string
 	maxCpu           *int
 	grpcDialOption   grpc.DialOption
@@ -62,6 +63,7 @@ func init() {
 	b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
 	b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
 	b.replication = cmdBenchmark.Flag.String("replication", "000", "replication type")
+	b.volumeType = cmdBenchmark.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
 	b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	b.fsync = cmdBenchmark.Flag.Bool("fsync", false, "flush data to disk after write")
@@ -234,6 +236,7 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
 			Count:       1,
 			Collection:  *b.collection,
 			Replication: *b.replication,
+			VolumeType: *b.volumeType,
 		}
 		if assignResult, err := operation.Assign(b.masterClient.GetMaster(), b.grpcDialOption, ar); err == nil {
 			fp.Server, fp.Fid, fp.Collection = assignResult.Url, assignResult.Fid, *b.collection
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 322e5418d..1102a8cff 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -37,6 +37,7 @@ type CopyOptions struct {
 	replication       *string
 	collection        *string
 	ttl               *string
+	volumeType        *string
 	maxMB             *int
 	masterClient      *wdclient.MasterClient
 	concurrenctFiles  *int
@@ -54,6 +55,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
+	copy.volumeType = cmdCopy.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
@@ -311,6 +313,7 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 				Replication: *worker.options.replication,
 				Collection:  *worker.options.collection,
 				TtlSec:      worker.options.ttlSec,
+				VolumeType:  *worker.options.volumeType,
 				Path:        task.destinationUrlPath,
 			}
 
@@ -405,6 +408,7 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 					Replication: *worker.options.replication,
 					Collection:  *worker.options.collection,
 					TtlSec:      worker.options.ttlSec,
+					VolumeType:  *worker.options.volumeType,
 					Path:        task.destinationUrlPath + fileName,
 				}
 
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index af0a624b1..ee3731a99 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -31,6 +31,8 @@ type SyncOptions struct {
 	bCollection     *string
 	aTtlSec         *int
 	bTtlSec         *int
+	aVolumeType     *string
+	bVolumeType     *string
 	aDebug          *bool
 	bDebug          *bool
 }
@@ -54,6 +56,8 @@ func init() {
 	syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
 	syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
 	syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
+	syncOptions.aVolumeType = cmdFilerSynchronize.Flag.String("a.volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer A")
+	syncOptions.bVolumeType = cmdFilerSynchronize.Flag.String("b.volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer B")
 	syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
 	syncOptions.bDebug = cmdFilerSynchronize.Flag.Bool("b.debug", false, "debug mode to print out filer B received files")
 	syncCpuProfile = cmdFilerSynchronize.Flag.String("cpuprofile", "", "cpu profile output file")
@@ -87,7 +91,7 @@ func runFilerSynchronize(cmd *Command, args []string) bool {
 	go func() {
 		for {
 			err := doSubscribeFilerMetaChanges(grpcDialOption, *syncOptions.filerA, *syncOptions.aPath, *syncOptions.filerB,
-				*syncOptions.bPath, *syncOptions.bReplication, *syncOptions.bCollection, *syncOptions.bTtlSec, *syncOptions.bDebug)
+				*syncOptions.bPath, *syncOptions.bReplication, *syncOptions.bCollection, *syncOptions.bTtlSec, *syncOptions.bVolumeType, *syncOptions.bDebug)
 			if err != nil {
 				glog.Errorf("sync from %s to %s: %v", *syncOptions.filerA, *syncOptions.filerB, err)
 				time.Sleep(1747 * time.Millisecond)
@@ -99,7 +103,7 @@ func runFilerSynchronize(cmd *Command, args []string) bool {
 		go func() {
 			for {
 				err := doSubscribeFilerMetaChanges(grpcDialOption, *syncOptions.filerB, *syncOptions.bPath, *syncOptions.filerA,
-					*syncOptions.aPath, *syncOptions.aReplication, *syncOptions.aCollection, *syncOptions.aTtlSec, *syncOptions.aDebug)
+					*syncOptions.aPath, *syncOptions.aReplication, *syncOptions.aCollection, *syncOptions.aTtlSec, *syncOptions.aVolumeType, *syncOptions.aDebug)
 				if err != nil {
 					glog.Errorf("sync from %s to %s: %v", *syncOptions.filerB, *syncOptions.filerA, err)
 					time.Sleep(2147 * time.Millisecond)
@@ -114,7 +118,7 @@ func runFilerSynchronize(cmd *Command, args []string) bool {
 }
 
 func doSubscribeFilerMetaChanges(grpcDialOption grpc.DialOption, sourceFiler, sourcePath, targetFiler, targetPath string,
-	replicationStr, collection string, ttlSec int, debug bool) error {
+	replicationStr, collection string, ttlSec int, volumeType string, debug bool) error {
 
 	// read source filer signature
 	sourceFilerSignature, sourceErr := replication.ReadFilerSignature(grpcDialOption, sourceFiler)
@@ -140,7 +144,7 @@ func doSubscribeFilerMetaChanges(grpcDialOption grpc.DialOption, sourceFiler, so
 	filerSource := &source.FilerSource{}
 	filerSource.DoInitialize(pb.ServerToGrpcAddress(sourceFiler), sourcePath)
 	filerSink := &filersink.FilerSink{}
-	filerSink.DoInitialize(pb.ServerToGrpcAddress(targetFiler), targetPath, replicationStr, collection, ttlSec, grpcDialOption)
+	filerSink.DoInitialize(pb.ServerToGrpcAddress(targetFiler), targetPath, replicationStr, collection, ttlSec, volumeType, grpcDialOption)
 	filerSink.SetSourceFiler(filerSource)
 
 	processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
diff --git a/weed/command/mount.go b/weed/command/mount.go
index f325cb0a5..8e9e73315 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -12,6 +12,7 @@ type MountOptions struct {
 	dirAutoCreate               *bool
 	collection                  *string
 	replication                 *string
+	volumeType                  *string
 	ttlSec                      *int
 	chunkSizeLimitMB            *int
 	concurrentWriters           *int
@@ -41,6 +42,7 @@ func init() {
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
 	mountOptions.collection = cmdMount.Flag.String("collection", "", "collection to create the files")
 	mountOptions.replication = cmdMount.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
+	mountOptions.volumeType = cmdMount.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	mountOptions.ttlSec = cmdMount.Flag.Int("ttl", 0, "file ttl in seconds")
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
 	mountOptions.concurrentWriters = cmdMount.Flag.Int("concurrentWriters", 0, "limit concurrent goroutine writers if not 0")
diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index 83cb352ff..94a145c1b 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -5,6 +5,7 @@ package command
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"os"
 	"os/user"
 	"path"
@@ -167,6 +168,12 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		mountRoot = mountRoot[0 : len(mountRoot)-1]
 	}
 
+	volumeType, err := storage.ToVolumeType(*option.volumeType)
+	if err != nil {
+		fmt.Printf("failed to parse volume type: %v\n", err)
+		return false
+	}
+
 	seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
 		FilerGrpcAddress:            filerGrpcAddress,
 		GrpcDialOption:              grpcDialOption,
@@ -174,6 +181,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		Collection:                  *option.collection,
 		Replication:                 *option.replication,
 		TtlSec:                      int32(*option.ttlSec),
+		VolumeType:                  volumeType,
 		ChunkSizeLimit:              int64(chunkSizeLimitMB) * 1024 * 1024,
 		ConcurrentWriters:           *option.concurrentWriters,
 		CacheDir:                    *option.cacheDir,
diff --git a/weed/command/upload.go b/weed/command/upload.go
index 45b15535b..bafca8cee 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -23,6 +23,7 @@ type UploadOptions struct {
 	collection   *string
 	dataCenter   *string
 	ttl          *string
+	volumeType   *string
 	maxMB        *int
 	usePublicUrl *bool
 }
@@ -36,6 +37,7 @@ func init() {
 	upload.replication = cmdUpload.Flag.String("replication", "", "replication type")
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
+	upload.volumeType = cmdUpload.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
 	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 	upload.usePublicUrl = cmdUpload.Flag.Bool("usePublicUrl", false, "upload to public url from volume server")
@@ -81,7 +83,7 @@ func runUpload(cmd *Command, args []string) bool {
 					if e != nil {
 						return e
 					}
-					results, e := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.maxMB, *upload.usePublicUrl)
+					results, e := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.volumeType, *upload.maxMB, *upload.usePublicUrl)
 					bytes, _ := json.Marshal(results)
 					fmt.Println(string(bytes))
 					if e != nil {
@@ -98,7 +100,7 @@ func runUpload(cmd *Command, args []string) bool {
 		if e != nil {
 			fmt.Println(e.Error())
 		}
-		results, _ := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.maxMB, *upload.usePublicUrl)
+		results, _ := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.volumeType, *upload.maxMB, *upload.usePublicUrl)
 		bytes, _ := json.Marshal(results)
 		fmt.Println(string(bytes))
 	}
diff --git a/weed/filer/entry.go b/weed/filer/entry.go
index dbe10c9b1..e579b9b21 100644
--- a/weed/filer/entry.go
+++ b/weed/filer/entry.go
@@ -18,6 +18,7 @@ type Attr struct {
 	Replication   string      // replication
 	Collection    string      // collection name
 	TtlSec        int32       // ttl in seconds
+	VolumeType    string
 	UserName      string
 	GroupNames    []string
 	SymlinkTarget string
diff --git a/weed/filer/entry_codec.go b/weed/filer/entry_codec.go
index 1693b551e..45b391436 100644
--- a/weed/filer/entry_codec.go
+++ b/weed/filer/entry_codec.go
@@ -56,6 +56,7 @@ func EntryAttributeToPb(entry *Entry) *filer_pb.FuseAttributes {
 		Collection:    entry.Attr.Collection,
 		Replication:   entry.Attr.Replication,
 		TtlSec:        entry.Attr.TtlSec,
+		VolumeType:    entry.Attr.VolumeType,
 		UserName:      entry.Attr.UserName,
 		GroupName:     entry.Attr.GroupNames,
 		SymlinkTarget: entry.Attr.SymlinkTarget,
@@ -81,6 +82,7 @@ func PbToEntryAttribute(attr *filer_pb.FuseAttributes) Attr {
 	t.Collection = attr.Collection
 	t.Replication = attr.Replication
 	t.TtlSec = attr.TtlSec
+	t.VolumeType = attr.VolumeType
 	t.UserName = attr.UserName
 	t.GroupNames = attr.GroupName
 	t.SymlinkTarget = attr.SymlinkTarget
diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index cd14e8032..1d4b323e2 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -3,6 +3,7 @@ package filesys
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"math"
 	"os"
 	"path"
@@ -30,6 +31,7 @@ type Option struct {
 	Collection         string
 	Replication        string
 	TtlSec             int32
+	VolumeType         storage.VolumeType
 	ChunkSizeLimit     int64
 	ConcurrentWriters  int
 	CacheDir           string
@@ -176,6 +178,7 @@ func (wfs *WFS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.
 				Collection:  wfs.option.Collection,
 				Replication: wfs.option.Replication,
 				Ttl:         fmt.Sprintf("%ds", wfs.option.TtlSec),
+				VolumeType:  string(wfs.option.VolumeType),
 			}
 
 			glog.V(4).Infof("reading filer stats: %+v", request)
diff --git a/weed/filesys/wfs_write.go b/weed/filesys/wfs_write.go
index 83e40e7f5..00a7445c8 100644
--- a/weed/filesys/wfs_write.go
+++ b/weed/filesys/wfs_write.go
@@ -26,6 +26,7 @@ func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath) filer.SaveDataAsChunkFun
 				Replication: wfs.option.Replication,
 				Collection:  wfs.option.Collection,
 				TtlSec:      wfs.option.TtlSec,
+				VolumeType:  string(wfs.option.VolumeType),
 				DataCenter:  wfs.option.DataCenter,
 				Path:        string(fullPath),
 			}
diff --git a/weed/operation/assign_file_id.go b/weed/operation/assign_file_id.go
index 5fe3462e9..5f77d28ca 100644
--- a/weed/operation/assign_file_id.go
+++ b/weed/operation/assign_file_id.go
@@ -18,6 +18,7 @@ type VolumeAssignRequest struct {
 	Replication         string
 	Collection          string
 	Ttl                 string
+	VolumeType          string
 	DataCenter          string
 	Rack                string
 	DataNode            string
@@ -54,6 +55,7 @@ func Assign(server string, grpcDialOption grpc.DialOption, primaryRequest *Volum
 				Replication:         request.Replication,
 				Collection:          request.Collection,
 				Ttl:                 request.Ttl,
+				VolumeType:          request.VolumeType,
 				DataCenter:          request.DataCenter,
 				Rack:                request.Rack,
 				DataNode:            request.DataNode,
@@ -105,6 +107,7 @@ func LookupJwt(master string, fileId string) security.EncodedJwt {
 
 type StorageOption struct {
 	Replication       string
+	VolumeType        string
 	Collection        string
 	DataCenter        string
 	Rack              string
@@ -123,6 +126,7 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 		Replication:         so.Replication,
 		Collection:          so.Collection,
 		Ttl:                 so.TtlString(),
+		VolumeType:          so.VolumeType,
 		DataCenter:          so.DataCenter,
 		Rack:                so.Rack,
 		WritableVolumeCount: so.VolumeGrowthCount,
@@ -133,6 +137,7 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 			Replication:         so.Replication,
 			Collection:          so.Collection,
 			Ttl:                 so.TtlString(),
+			VolumeType:          so.VolumeType,
 			DataCenter:          "",
 			Rack:                "",
 			WritableVolumeCount: so.VolumeGrowthCount,
diff --git a/weed/operation/submit.go b/weed/operation/submit.go
index 25843c892..70ab4194a 100644
--- a/weed/operation/submit.go
+++ b/weed/operation/submit.go
@@ -25,6 +25,7 @@ type FilePart struct {
 	Collection  string
 	DataCenter  string
 	Ttl         string
+	VolumeType  string
 	Server      string //this comes from assign result
 	Fid         string //this comes from assign result, but customizable
 	Fsync       bool
@@ -38,7 +39,7 @@ type SubmitResult struct {
 	Error    string `json:"error,omitempty"`
 }
 
-func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart, replication string, collection string, dataCenter string, ttl string, maxMB int, usePublicUrl bool) ([]SubmitResult, error) {
+func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart, replication string, collection string, dataCenter string, ttl string, volumeType string, maxMB int, usePublicUrl bool) ([]SubmitResult, error) {
 	results := make([]SubmitResult, len(files))
 	for index, file := range files {
 		results[index].FileName = file.FileName
@@ -49,6 +50,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		Collection:  collection,
 		DataCenter:  dataCenter,
 		Ttl:         ttl,
+		VolumeType:  volumeType,
 	}
 	ret, err := Assign(master, grpcDialOption, ar)
 	if err != nil {
@@ -69,6 +71,8 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		file.Replication = replication
 		file.Collection = collection
 		file.DataCenter = dataCenter
+		file.Ttl = ttl
+		file.VolumeType = volumeType
 		results[index].Size, err = file.Upload(maxMB, master, usePublicUrl, ret.Auth, grpcDialOption)
 		if err != nil {
 			results[index].Error = err.Error()
@@ -142,6 +146,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 				Replication: fi.Replication,
 				Collection:  fi.Collection,
 				Ttl:         fi.Ttl,
+				VolumeType:  fi.VolumeType,
 			}
 			ret, err = Assign(master, grpcDialOption, ar)
 			if err != nil {
@@ -155,6 +160,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 					Replication: fi.Replication,
 					Collection:  fi.Collection,
 					Ttl:         fi.Ttl,
+					VolumeType:  fi.VolumeType,
 				}
 				ret, err = Assign(master, grpcDialOption, ar)
 				if err != nil {
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index c046e48f3..ba49e420f 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -156,6 +156,7 @@ message FuseAttributes {
     repeated string group_name = 12; // for hdfs
     string symlink_target = 13;
     bytes md5 = 14;
+    string volume_type = 15;
 }
 
 message CreateEntryRequest {
@@ -220,6 +221,7 @@ message AssignVolumeRequest {
     string data_center = 5;
     string path = 6;
     string rack = 7;
+    string volume_type = 8;
 }
 
 message AssignVolumeResponse {
@@ -270,11 +272,9 @@ message StatisticsRequest {
     string replication = 1;
     string collection = 2;
     string ttl = 3;
+    string volume_type = 4;
 }
 message StatisticsResponse {
-    string replication = 1;
-    string collection = 2;
-    string ttl = 3;
     uint64 total_size = 4;
     uint64 used_size = 5;
     uint64 file_count = 6;
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index deddbeff1..bf9108a07 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -807,6 +807,7 @@ type FuseAttributes struct {
 	GroupName     []string `protobuf:"bytes,12,rep,name=group_name,json=groupName,proto3" json:"group_name,omitempty"` // for hdfs
 	SymlinkTarget string   `protobuf:"bytes,13,opt,name=symlink_target,json=symlinkTarget,proto3" json:"symlink_target,omitempty"`
 	Md5           []byte   `protobuf:"bytes,14,opt,name=md5,proto3" json:"md5,omitempty"`
+	VolumeType    string   `protobuf:"bytes,15,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *FuseAttributes) Reset() {
@@ -939,6 +940,13 @@ func (x *FuseAttributes) GetMd5() []byte {
 	return nil
 }
 
+func (x *FuseAttributes) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type CreateEntryRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1539,6 +1547,7 @@ type AssignVolumeRequest struct {
 	DataCenter  string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
 	Path        string `protobuf:"bytes,6,opt,name=path,proto3" json:"path,omitempty"`
 	Rack        string `protobuf:"bytes,7,opt,name=rack,proto3" json:"rack,omitempty"`
+	VolumeType  string `protobuf:"bytes,8,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *AssignVolumeRequest) Reset() {
@@ -1622,6 +1631,13 @@ func (x *AssignVolumeRequest) GetRack() string {
 	return ""
 }
 
+func (x *AssignVolumeRequest) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type AssignVolumeResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2163,6 +2179,7 @@ type StatisticsRequest struct {
 	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	VolumeType  string `protobuf:"bytes,4,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *StatisticsRequest) Reset() {
@@ -2218,17 +2235,21 @@ func (x *StatisticsRequest) GetTtl() string {
 	return ""
 }
 
+func (x *StatisticsRequest) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type StatisticsResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	TotalSize   uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize,proto3" json:"total_size,omitempty"`
-	UsedSize    uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize,proto3" json:"used_size,omitempty"`
-	FileCount   uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
+	TotalSize uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize,proto3" json:"total_size,omitempty"`
+	UsedSize  uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize,proto3" json:"used_size,omitempty"`
+	FileCount uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
 }
 
 func (x *StatisticsResponse) Reset() {
@@ -2263,27 +2284,6 @@ func (*StatisticsResponse) Descriptor() ([]byte, []int) {
 	return file_filer_proto_rawDescGZIP(), []int{33}
 }
 
-func (x *StatisticsResponse) GetReplication() string {
-	if x != nil {
-		return x.Replication
-	}
-	return ""
-}
-
-func (x *StatisticsResponse) GetCollection() string {
-	if x != nil {
-		return x.Collection
-	}
-	return ""
-}
-
-func (x *StatisticsResponse) GetTtl() string {
-	if x != nil {
-		return x.Ttl
-	}
-	return ""
-}
-
 func (x *StatisticsResponse) GetTotalSize() uint64 {
 	if x != nil {
 		return x.TotalSize
@@ -3375,7 +3375,7 @@ var file_filer_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 87fdb53af..c09ecf7a9 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -163,6 +163,7 @@ message AssignRequest {
     string data_node = 7;
     uint32 memory_map_max_size_mb = 8;
     uint32 Writable_volume_count = 9;
+    string volume_type = 10;
 }
 message AssignResponse {
     string fid = 1;
@@ -177,11 +178,9 @@ message StatisticsRequest {
     string replication = 1;
     string collection = 2;
     string ttl = 3;
+    string volume_type = 4;
 }
 message StatisticsResponse {
-    string replication = 1;
-    string collection = 2;
-    string ttl = 3;
     uint64 total_size = 4;
     uint64 used_size = 5;
     uint64 file_count = 6;
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index d206564f9..3ca88d6c8 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -1032,6 +1032,7 @@ type AssignRequest struct {
 	DataNode            string `protobuf:"bytes,7,opt,name=data_node,json=dataNode,proto3" json:"data_node,omitempty"`
 	MemoryMapMaxSizeMb  uint32 `protobuf:"varint,8,opt,name=memory_map_max_size_mb,json=memoryMapMaxSizeMb,proto3" json:"memory_map_max_size_mb,omitempty"`
 	WritableVolumeCount uint32 `protobuf:"varint,9,opt,name=Writable_volume_count,json=WritableVolumeCount,proto3" json:"Writable_volume_count,omitempty"`
+	VolumeType          string `protobuf:"bytes,10,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *AssignRequest) Reset() {
@@ -1129,6 +1130,13 @@ func (x *AssignRequest) GetWritableVolumeCount() uint32 {
 	return 0
 }
 
+func (x *AssignRequest) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type AssignResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1224,6 +1232,7 @@ type StatisticsRequest struct {
 	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	VolumeType  string `protobuf:"bytes,4,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *StatisticsRequest) Reset() {
@@ -1279,17 +1288,21 @@ func (x *StatisticsRequest) GetTtl() string {
 	return ""
 }
 
+func (x *StatisticsRequest) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type StatisticsResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	TotalSize   uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize,proto3" json:"total_size,omitempty"`
-	UsedSize    uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize,proto3" json:"used_size,omitempty"`
-	FileCount   uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
+	TotalSize uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize,proto3" json:"total_size,omitempty"`
+	UsedSize  uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize,proto3" json:"used_size,omitempty"`
+	FileCount uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
 }
 
 func (x *StatisticsResponse) Reset() {
@@ -1324,27 +1337,6 @@ func (*StatisticsResponse) Descriptor() ([]byte, []int) {
 	return file_master_proto_rawDescGZIP(), []int{16}
 }
 
-func (x *StatisticsResponse) GetReplication() string {
-	if x != nil {
-		return x.Replication
-	}
-	return ""
-}
-
-func (x *StatisticsResponse) GetCollection() string {
-	if x != nil {
-		return x.Collection
-	}
-	return ""
-}
-
-func (x *StatisticsResponse) GetTtl() string {
-	if x != nil {
-		return x.Ttl
-	}
-	return ""
-}
-
 func (x *StatisticsResponse) GetTotalSize() uint64 {
 	if x != nil {
 		return x.TotalSize
@@ -3070,7 +3062,7 @@ var file_master_proto_rawDesc = []byte{
 	0x12, 0x10, 0x0a, 0x03, 0x75, 0x72, 0x6c, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x75,
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@@ -3089,120 +3081,100 @@ var file_master_proto_rawDesc = []byte{
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-	0x65, 0x6e, 0x74, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x5a,
-	0x0a, 0x0f, 0x4c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65,
-	0x6e, 0x12, 0x21, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x65,
-	0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71,
-	0x75, 0x65, 0x73, 0x74, 0x1a, 0x22, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62,
-	0x2e, 0x4c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e,
-	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x60, 0x0a, 0x11, 0x52, 0x65,
-	0x6c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x12,
-	0x23, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x52, 0x65, 0x6c, 0x65,
-	0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71,
+	0x65, 0x4c, 0x69, 0x73, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1d, 0x2e, 0x6d,
+	0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4c,
+	0x69, 0x73, 0x74, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x57, 0x0a,
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+	0x20, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x6f, 0x6f, 0x6b,
+	0x75, 0x70, 0x45, 0x63, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
+	0x74, 0x1a, 0x21, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x6f,
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+	0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x12, 0x1e, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f,
+	0x70, 0x62, 0x2e, 0x56, 0x61, 0x63, 0x75, 0x75, 0x6d, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x52,
+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1f, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f,
+	0x70, 0x62, 0x2e, 0x56, 0x61, 0x63, 0x75, 0x75, 0x6d, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x52,
+	0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x6f, 0x0a, 0x16, 0x47, 0x65, 0x74,
+	0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x75, 0x72, 0x61, 0x74,
+	0x69, 0x6f, 0x6e, 0x12, 0x28, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e,
+	0x47, 0x65, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x75,
+	0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x29, 0x2e,
+	0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x47, 0x65, 0x74, 0x4d, 0x61, 0x73,
+	0x74, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e,
+	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x60, 0x0a, 0x11, 0x4c, 0x69,
+	0x73, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x12,
+	0x23, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x69, 0x73, 0x74,
+	0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x52, 0x65, 0x71,
 	0x75, 0x65, 0x73, 0x74, 0x1a, 0x24, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62,
-	0x2e, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b,
-	0x65, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x32, 0x5a, 0x30,
-	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73,
-	0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77,
-	0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x2e, 0x4c, 0x69, 0x73, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6c, 0x69, 0x65, 0x6e,
+	0x74, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x5a, 0x0a, 0x0f,
+	0x4c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x12,
+	0x21, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x65, 0x61, 0x73,
+	0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65,
+	0x73, 0x74, 0x1a, 0x22, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c,
+	0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65,
+	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x60, 0x0a, 0x11, 0x52, 0x65, 0x6c, 0x65,
+	0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x12, 0x23, 0x2e,
+	0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73,
+	0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65,
+	0x73, 0x74, 0x1a, 0x24, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x52,
+	0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e,
+	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x32, 0x5a, 0x30, 0x67, 0x69,
+	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75,
+	0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65,
+	0x64, 0x2f, 0x70, 0x62, 0x2f, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/weed/replication/sink/filersink/fetch_write.go b/weed/replication/sink/filersink/fetch_write.go
index d193ff81c..ac9ff789a 100644
--- a/weed/replication/sink/filersink/fetch_write.go
+++ b/weed/replication/sink/filersink/fetch_write.go
@@ -77,6 +77,7 @@ func (fs *FilerSink) fetchAndWrite(sourceChunk *filer_pb.FileChunk, path string)
 			Collection:  fs.collection,
 			TtlSec:      fs.ttlSec,
 			DataCenter:  fs.dataCenter,
+			VolumeType:  fs.volumeType,
 			Path:        path,
 		}
 
diff --git a/weed/replication/sink/filersink/filer_sink.go b/weed/replication/sink/filersink/filer_sink.go
index a58c8f296..a60a31b4a 100644
--- a/weed/replication/sink/filersink/filer_sink.go
+++ b/weed/replication/sink/filersink/filer_sink.go
@@ -23,6 +23,7 @@ type FilerSink struct {
 	replication    string
 	collection     string
 	ttlSec         int32
+	volumeType     string
 	dataCenter     string
 	grpcDialOption grpc.DialOption
 }
@@ -46,6 +47,7 @@ func (fs *FilerSink) Initialize(configuration util.Configuration, prefix string)
 		configuration.GetString(prefix+"replication"),
 		configuration.GetString(prefix+"collection"),
 		configuration.GetInt(prefix+"ttlSec"),
+		configuration.GetString(prefix+"volumeType"),
 		security.LoadClientTLS(util.GetViper(), "grpc.client"))
 }
 
@@ -54,12 +56,13 @@ func (fs *FilerSink) SetSourceFiler(s *source.FilerSource) {
 }
 
 func (fs *FilerSink) DoInitialize(grpcAddress string, dir string,
-	replication string, collection string, ttlSec int, grpcDialOption grpc.DialOption) (err error) {
+	replication string, collection string, ttlSec int, volumeType string, grpcDialOption grpc.DialOption) (err error) {
 	fs.grpcAddress = grpcAddress
 	fs.dir = dir
 	fs.replication = replication
 	fs.collection = collection
 	fs.ttlSec = int32(ttlSec)
+	fs.volumeType = volumeType
 	fs.grpcDialOption = grpcDialOption
 	return nil
 }
diff --git a/weed/server/common.go b/weed/server/common.go
index 58079032e..852fffb5e 100644
--- a/weed/server/common.go
+++ b/weed/server/common.go
@@ -131,6 +131,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
 		Replication: r.FormValue("replication"),
 		Collection:  r.FormValue("collection"),
 		Ttl:         r.FormValue("ttl"),
+		VolumeType:  r.FormValue("volumeType"),
 	}
 	assignResult, ae := operation.Assign(masterUrl, grpcDialOption, ar)
 	if ae != nil {
diff --git a/weed/server/filer_grpc_server.go b/weed/server/filer_grpc_server.go
index 5f1b2d819..bc6d0ceb9 100644
--- a/weed/server/filer_grpc_server.go
+++ b/weed/server/filer_grpc_server.go
@@ -265,6 +265,7 @@ func (fs *FilerServer) cleanupChunks(fullpath string, existingEntry *filer.Entry
 			newEntry.Attributes.Collection,
 			newEntry.Attributes.Replication,
 			newEntry.Attributes.TtlSec,
+			newEntry.Attributes.VolumeType,
 			"",
 			"",
 		)
@@ -308,7 +309,7 @@ func (fs *FilerServer) AppendToEntry(ctx context.Context, req *filer_pb.AppendTo
 	}
 
 	entry.Chunks = append(entry.Chunks, req.Chunks...)
-	so := fs.detectStorageOption(string(fullpath), entry.Collection, entry.Replication, entry.TtlSec, "", "")
+	so := fs.detectStorageOption(string(fullpath), entry.Collection, entry.Replication, entry.TtlSec, entry.VolumeType, "", "")
 	entry.Chunks, err = filer.MaybeManifestize(fs.saveAsChunk(so), entry.Chunks)
 	if err != nil {
 		// not good, but should be ok
@@ -334,7 +335,7 @@ func (fs *FilerServer) DeleteEntry(ctx context.Context, req *filer_pb.DeleteEntr
 
 func (fs *FilerServer) AssignVolume(ctx context.Context, req *filer_pb.AssignVolumeRequest) (resp *filer_pb.AssignVolumeResponse, err error) {
 
-	so := fs.detectStorageOption(req.Path, req.Collection, req.Replication, req.TtlSec, req.DataCenter, req.Rack)
+	so := fs.detectStorageOption(req.Path, req.Collection, req.Replication, req.TtlSec, req.VolumeType, req.DataCenter, req.Rack)
 
 	assignRequest, altRequest := so.ToAssignRequests(int(req.Count))
 
@@ -404,6 +405,7 @@ func (fs *FilerServer) Statistics(ctx context.Context, req *filer_pb.StatisticsR
 			Replication: req.Replication,
 			Collection:  req.Collection,
 			Ttl:         req.Ttl,
+			VolumeType:  req.VolumeType,
 		})
 		if grpcErr != nil {
 			return grpcErr
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index 9131b042b..e6fc31d8e 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -61,6 +61,7 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
 		query.Get("collection"),
 		query.Get("replication"),
 		query.Get("ttl"),
+		query.Get("volumeType"),
 		query.Get("dataCenter"),
 		query.Get("rack"),
 	)
@@ -104,7 +105,7 @@ func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusNoContent)
 }
 
-func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication string, ttlSeconds int32, dataCenter, rack string) *operation.StorageOption {
+func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication string, ttlSeconds int32, volumeType string, dataCenter, rack string) *operation.StorageOption {
 	collection := util.Nvl(qCollection, fs.option.Collection)
 	replication := util.Nvl(qReplication, fs.option.DefaultReplication)
 
@@ -134,17 +135,18 @@ func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication
 		DataCenter:        util.Nvl(dataCenter, fs.option.DataCenter),
 		Rack:              util.Nvl(rack, fs.option.Rack),
 		TtlSeconds:        ttlSeconds,
+		VolumeType:        volumeType,
 		Fsync:             fsync || rule.Fsync,
 		VolumeGrowthCount: rule.VolumeGrowthCount,
 	}
 }
 
-func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, dataCenter, rack string) *operation.StorageOption {
+func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, volumeType string, dataCenter, rack string) *operation.StorageOption {
 
 	ttl, err := needle.ReadTTL(qTtl)
 	if err != nil {
 		glog.Errorf("fail to parse ttl %s: %v", qTtl, err)
 	}
 
-	return fs.detectStorageOption(requestURI, qCollection, qReplication, int32(ttl.Minutes())*60, dataCenter, rack)
+	return fs.detectStorageOption(requestURI, qCollection, qReplication, int32(ttl.Minutes())*60, volumeType, dataCenter, rack)
 }
diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
index 0f6d0dc47..9f88bd202 100644
--- a/weed/server/filer_server_handlers_write_autochunk.go
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -159,6 +159,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 			Replication: so.Replication,
 			Collection:  so.Collection,
 			TtlSec:      so.TtlSeconds,
+			VolumeType:  so.VolumeType,
 			Mime:        contentType,
 			Md5:         md5bytes,
 			FileSize:    uint64(chunkOffset),
diff --git a/weed/server/filer_server_handlers_write_cipher.go b/weed/server/filer_server_handlers_write_cipher.go
index 3cc0d0c41..c5e8a74d8 100644
--- a/weed/server/filer_server_handlers_write_cipher.go
+++ b/weed/server/filer_server_handlers_write_cipher.go
@@ -68,6 +68,7 @@ func (fs *FilerServer) encrypt(ctx context.Context, w http.ResponseWriter, r *ht
 			Replication: so.Replication,
 			Collection:  so.Collection,
 			TtlSec:      so.TtlSeconds,
+			VolumeType:  so.VolumeType,
 			Mime:        pu.MimeType,
 			Md5:         util.Base64Md5ToBytes(pu.ContentMd5),
 		},
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index 20a22d126..08ac351d4 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"github.com/chrislusf/raft"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 	"github.com/chrislusf/seaweedfs/weed/security"
@@ -60,11 +61,16 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 	if err != nil {
 		return nil, err
 	}
+	volumeType, err := storage.ToVolumeType(req.VolumeType)
+	if err != nil {
+		return nil, err
+	}
 
 	option := &topology.VolumeGrowOption{
 		Collection:         req.Collection,
 		ReplicaPlacement:   replicaPlacement,
 		Ttl:                ttl,
+		VolumeType:         volumeType,
 		Prealloacte:        ms.preallocateSize,
 		DataCenter:         req.DataCenter,
 		Rack:               req.Rack,
@@ -117,7 +123,7 @@ func (ms *MasterServer) Statistics(ctx context.Context, req *master_pb.Statistic
 		return nil, err
 	}
 
-	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl)
+	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, storage.VolumeType(req.VolumeType))
 	stats := volumeLayout.Stats()
 
 	totalSize := ms.Topo.GetMaxVolumeCount() * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 34235384f..001ff9cdc 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -3,6 +3,7 @@ package weed_server
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"math/rand"
 	"net/http"
 	"strconv"
@@ -136,7 +137,7 @@ func (ms *MasterServer) submitFromMasterServerHandler(w http.ResponseWriter, r *
 }
 
 func (ms *MasterServer) HasWritableVolume(option *topology.VolumeGrowOption) bool {
-	vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl)
+	vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.VolumeType)
 	return vl.GetActiveVolumeCount(option) > 0
 }
 
@@ -157,6 +158,10 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 	if err != nil {
 		return nil, err
 	}
+	volumeType, err := storage.ToVolumeType(r.FormValue("volumeType"))
+	if err != nil {
+		return nil, err
+	}
 
 	preallocate := ms.preallocateSize
 	if r.FormValue("preallocate") != "" {
@@ -169,6 +174,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 		Collection:         r.FormValue("collection"),
 		ReplicaPlacement:   replicaPlacement,
 		Ttl:                ttl,
+		VolumeType:         volumeType,
 		Prealloacte:        preallocate,
 		DataCenter:         r.FormValue("dataCenter"),
 		Rack:               r.FormValue("rack"),
diff --git a/weed/server/webdav_server.go b/weed/server/webdav_server.go
index 2b238e534..329560d3f 100644
--- a/weed/server/webdav_server.go
+++ b/weed/server/webdav_server.go
@@ -33,6 +33,7 @@ type WebDavOption struct {
 	BucketsPath      string
 	GrpcDialOption   grpc.DialOption
 	Collection       string
+	VolumeType       string
 	Uid              uint32
 	Gid              uint32
 	Cipher           bool
@@ -378,6 +379,7 @@ func (f *WebDavFile) saveDataAsChunk(reader io.Reader, name string, offset int64
 			Count:       1,
 			Replication: "",
 			Collection:  f.fs.option.Collection,
+			VolumeType:  f.fs.option.VolumeType,
 			Path:        name,
 		}
 
diff --git a/weed/storage/volume_info.go b/weed/storage/volume_info.go
index 313818cde..751ebb909 100644
--- a/weed/storage/volume_info.go
+++ b/weed/storage/volume_info.go
@@ -14,6 +14,7 @@ type VolumeInfo struct {
 	Size              uint64
 	ReplicaPlacement  *super_block.ReplicaPlacement
 	Ttl               *needle.TTL
+	VolumeType        VolumeType
 	Collection        string
 	Version           needle.Version
 	FileCount         int
diff --git a/weed/storage/volume_type.go b/weed/storage/volume_type.go
new file mode 100644
index 000000000..5504b4386
--- /dev/null
+++ b/weed/storage/volume_type.go
@@ -0,0 +1,23 @@
+package storage
+
+import "fmt"
+
+type VolumeType string
+
+const (
+	HardDriveType VolumeType = ""
+	SsdType                  = "ssd"
+)
+
+func ToVolumeType(vt string) (volumeType VolumeType, err error) {
+	volumeType = HardDriveType
+	switch vt {
+	case "", "hdd":
+		volumeType = HardDriveType
+	case "ssd":
+		volumeType = SsdType
+	default:
+		err = fmt.Errorf("parse VolumeType %s: expecting hdd or ssd\n", vt)
+	}
+	return
+}
diff --git a/weed/topology/collection.go b/weed/topology/collection.go
index 5b410d1eb..e3aab2f76 100644
--- a/weed/topology/collection.go
+++ b/weed/topology/collection.go
@@ -2,6 +2,7 @@ package topology
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
@@ -29,13 +30,16 @@ func (c *Collection) String() string {
 	return fmt.Sprintf("Name:%s, volumeSizeLimit:%d, storageType2VolumeLayout:%v", c.Name, c.volumeSizeLimit, c.storageType2VolumeLayout)
 }
 
-func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL) *VolumeLayout {
+func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) *VolumeLayout {
 	keyString := rp.String()
 	if ttl != nil {
 		keyString += ttl.String()
 	}
+	if volumeType != storage.HardDriveType {
+		keyString += string(volumeType)
+	}
 	vl := c.storageType2VolumeLayout.Get(keyString, func() interface{} {
-		return NewVolumeLayout(rp, ttl, c.volumeSizeLimit, c.replicationAsMin)
+		return NewVolumeLayout(rp, ttl, volumeType, c.volumeSizeLimit, c.replicationAsMin)
 	})
 	return vl.(*VolumeLayout)
 }
diff --git a/weed/topology/topology.go b/weed/topology/topology.go
index bde72cf09..e02982451 100644
--- a/weed/topology/topology.go
+++ b/weed/topology/topology.go
@@ -121,12 +121,12 @@ func (t *Topology) NextVolumeId() (needle.VolumeId, error) {
 }
 
 func (t *Topology) HasWritableVolume(option *VolumeGrowOption) bool {
-	vl := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl)
+	vl := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.VolumeType)
 	return vl.GetActiveVolumeCount(option) > 0
 }
 
 func (t *Topology) PickForWrite(count uint64, option *VolumeGrowOption) (string, uint64, *DataNode, error) {
-	vid, count, datanodes, err := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl).PickForWrite(count, option)
+	vid, count, datanodes, err := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.VolumeType).PickForWrite(count, option)
 	if err != nil {
 		return "", 0, nil, fmt.Errorf("failed to find writable volumes for collection:%s replication:%s ttl:%s error: %v", option.Collection, option.ReplicaPlacement.String(), option.Ttl.String(), err)
 	}
@@ -137,10 +137,10 @@ func (t *Topology) PickForWrite(count uint64, option *VolumeGrowOption) (string,
 	return needle.NewFileId(*vid, fileId, rand.Uint32()).String(), count, datanodes.Head(), nil
 }
 
-func (t *Topology) GetVolumeLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL) *VolumeLayout {
+func (t *Topology) GetVolumeLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) *VolumeLayout {
 	return t.collectionMap.Get(collectionName, func() interface{} {
 		return NewCollection(collectionName, t.volumeSizeLimit, t.replicationAsMin)
-	}).(*Collection).GetOrCreateVolumeLayout(rp, ttl)
+	}).(*Collection).GetOrCreateVolumeLayout(rp, ttl, volumeType)
 }
 
 func (t *Topology) ListCollections(includeNormalVolumes, includeEcVolumes bool) (ret []string) {
@@ -177,13 +177,13 @@ func (t *Topology) DeleteCollection(collectionName string) {
 }
 
 func (t *Topology) RegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
-	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl)
+	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
 	vl.RegisterVolume(&v, dn)
 	vl.EnsureCorrectWritables(&v)
 }
 func (t *Topology) UnRegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
-	glog.Infof("removing volume info:%+v", v)
-	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl)
+	glog.Infof("removing volume info: %+v", v)
+	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
 	volumeLayout.UnRegisterVolume(&v, dn)
 	if volumeLayout.isEmpty() {
 		t.DeleteCollection(v.Collection)
@@ -222,7 +222,7 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 		t.UnRegisterVolumeLayout(v, dn)
 	}
 	for _, v := range changedVolumes {
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
 		vl.EnsureCorrectWritables(&v)
 	}
 	return
diff --git a/weed/topology/topology_event_handling.go b/weed/topology/topology_event_handling.go
index 068bd401e..98957a964 100644
--- a/weed/topology/topology_event_handling.go
+++ b/weed/topology/topology_event_handling.go
@@ -37,7 +37,7 @@ func (t *Topology) StartRefreshWritableVolumes(grpcDialOption grpc.DialOption, g
 	}()
 }
 func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
-	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl)
+	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, volumeInfo.VolumeType)
 	if !vl.SetVolumeCapacityFull(volumeInfo.Id) {
 		return false
 	}
@@ -55,7 +55,7 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 	for _, v := range dn.GetVolumes() {
 		glog.V(0).Infoln("Removing Volume", v.Id, "from the dead volume server", dn.Id())
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
 		vl.SetVolumeUnavailable(dn, v.Id)
 	}
 	dn.UpAdjustVolumeCountDelta(-dn.GetVolumeCount())
diff --git a/weed/topology/topology_test.go b/weed/topology/topology_test.go
index 2fe381ca2..9bcf2331e 100644
--- a/weed/topology/topology_test.go
+++ b/weed/topology/topology_test.go
@@ -96,7 +96,7 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 			nil,
 			dn)
 		rp, _ := super_block.NewReplicaPlacementFromString("000")
-		layout := topo.GetVolumeLayout("", rp, needle.EMPTY_TTL)
+		layout := topo.GetVolumeLayout("", rp, needle.EMPTY_TTL, storage.HardDriveType)
 		assert(t, "writables after repeated add", len(layout.writables), volumeCount)
 
 		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount)
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index 58b5702bf..7a0f3beb6 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -27,6 +27,7 @@ type VolumeGrowOption struct {
 	Collection         string
 	ReplicaPlacement   *super_block.ReplicaPlacement
 	Ttl                *needle.TTL
+	VolumeType         storage.VolumeType
 	Prealloacte        int64
 	DataCenter         string
 	Rack               string
diff --git a/weed/topology/volume_layout.go b/weed/topology/volume_layout.go
index 0db95d289..3d391cd84 100644
--- a/weed/topology/volume_layout.go
+++ b/weed/topology/volume_layout.go
@@ -103,6 +103,7 @@ func (v *volumesBinaryState) copyState(list *VolumeLocationList) copyState {
 type VolumeLayout struct {
 	rp               *super_block.ReplicaPlacement
 	ttl              *needle.TTL
+	volumeType       storage.VolumeType
 	vid2location     map[needle.VolumeId]*VolumeLocationList
 	writables        []needle.VolumeId   // transient array of writable volume id
 	readonlyVolumes  *volumesBinaryState // readonly volumes
@@ -118,10 +119,11 @@ type VolumeLayoutStats struct {
 	FileCount uint64
 }
 
-func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeSizeLimit uint64, replicationAsMin bool) *VolumeLayout {
+func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType, volumeSizeLimit uint64, replicationAsMin bool) *VolumeLayout {
 	return &VolumeLayout{
 		rp:               rp,
 		ttl:              ttl,
+		volumeType:       volumeType,
 		vid2location:     make(map[needle.VolumeId]*VolumeLocationList),
 		writables:        *new([]needle.VolumeId),
 		readonlyVolumes:  NewVolumesBinaryState(readOnlyState, rp, ExistCopies()),

From d156c74ec097add1954fa2a0a9a55eb02b44bb0e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 03:11:24 -0800
Subject: [PATCH 002/140] volume server set volume type and heartbeat to the
 master

---
 weed/command/volume.go                   |    9 +-
 weed/pb/master.proto                     |   14 +-
 weed/pb/master_pb/master.pb.go           | 1130 ++++++++++++----------
 weed/server/master_grpc_server.go        |    8 +-
 weed/server/master_grpc_server_volume.go |    2 +-
 weed/server/volume_server.go             |    6 +-
 weed/storage/disk_location.go            |    4 +-
 weed/storage/store.go                    |   31 +-
 weed/storage/volume.go                   |    3 +-
 weed/storage/volume_info.go              |    4 +-
 weed/topology/collection.go              |   11 +
 weed/topology/data_center.go             |    3 +
 weed/topology/data_node.go               |   21 +-
 weed/topology/node.go                    |   36 +-
 weed/topology/rack.go                    |    6 +-
 weed/topology/topology.go                |   19 +-
 weed/topology/topology_event_handling.go |    8 +-
 weed/topology/topology_map.go            |    4 +
 weed/topology/topology_test.go           |   27 +-
 19 files changed, 802 insertions(+), 544 deletions(-)

diff --git a/weed/command/volume.go b/weed/command/volume.go
index 9597e843a..6bfc71f4e 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -49,6 +49,7 @@ type VolumeServerOptions struct {
 	rack                  *string
 	whiteList             []string
 	indexType             *string
+	volumeType            *string
 	fixJpgOrientation     *bool
 	readRedirect          *bool
 	cpuProfile            *string
@@ -76,6 +77,7 @@ func init() {
 	v.dataCenter = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
+	v.volumeType = cmdVolume.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
@@ -210,10 +212,15 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 
 	masters := *v.masters
 
+	volumeType, err := storage.ToVolumeType(*v.volumeType)
+	if err != nil {
+		glog.Fatalf("failed to parse volume type: %v", err)
+	}
+
 	volumeServer := weed_server.NewVolumeServer(volumeMux, publicVolumeMux,
 		*v.ip, *v.port, *v.publicUrl,
 		v.folders, v.folderMaxLimits, v.minFreeSpacePercents,
-		*v.idxFolder,
+		*v.idxFolder, volumeType,
 		volumeNeedleMapKind,
 		strings.Split(masters, ","), 5, *v.dataCenter, *v.rack,
 		v.whiteList,
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index c09ecf7a9..30ba4d003 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -44,7 +44,6 @@ message Heartbeat {
     string ip = 1;
     uint32 port = 2;
     string public_url = 3;
-    uint32 max_volume_count = 4;
     uint64 max_file_key = 5;
     string data_center = 6;
     string rack = 7;
@@ -62,6 +61,9 @@ message Heartbeat {
     repeated VolumeEcShardInformationMessage deleted_ec_shards = 18;
     bool has_no_ec_shards = 19;
 
+    uint32 max_volume_count = 4;
+    uint32 max_ssd_volume_count = 20;
+
 }
 
 message HeartbeatResponse {
@@ -87,6 +89,7 @@ message VolumeInformationMessage {
     int64 modified_at_second = 12;
     string remote_storage_name = 13;
     string remote_storage_key = 14;
+    string volume_type = 15;
 }
 
 message VolumeShortInformationMessage {
@@ -95,6 +98,7 @@ message VolumeShortInformationMessage {
     uint32 replica_placement = 8;
     uint32 version = 9;
     uint32 ttl = 10;
+    string volume_type = 15;
 }
 
 message VolumeEcShardInformationMessage {
@@ -218,6 +222,8 @@ message DataNodeInfo {
     repeated VolumeInformationMessage volume_infos = 6;
     repeated VolumeEcShardInformationMessage ec_shard_infos = 7;
     uint64 remote_volume_count = 8;
+    uint64 max_ssd_volume_count = 9;
+    uint64 ssd_volume_count = 10;
 }
 message RackInfo {
     string id = 1;
@@ -227,6 +233,8 @@ message RackInfo {
     uint64 active_volume_count = 5;
     repeated DataNodeInfo data_node_infos = 6;
     uint64 remote_volume_count = 7;
+    uint64 max_ssd_volume_count = 8;
+    uint64 ssd_volume_count = 9;
 }
 message DataCenterInfo {
     string id = 1;
@@ -236,6 +244,8 @@ message DataCenterInfo {
     uint64 active_volume_count = 5;
     repeated RackInfo rack_infos = 6;
     uint64 remote_volume_count = 7;
+    uint64 max_ssd_volume_count = 8;
+    uint64 ssd_volume_count = 9;
 }
 message TopologyInfo {
     string id = 1;
@@ -245,6 +255,8 @@ message TopologyInfo {
     uint64 active_volume_count = 5;
     repeated DataCenterInfo data_center_infos = 6;
     uint64 remote_volume_count = 7;
+    uint64 max_ssd_volume_count = 8;
+    uint64 ssd_volume_count = 9;
 }
 message VolumeListRequest {
 }
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 3ca88d6c8..799e2fe83 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -34,15 +34,14 @@ type Heartbeat struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Ip             string                      `protobuf:"bytes,1,opt,name=ip,proto3" json:"ip,omitempty"`
-	Port           uint32                      `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
-	PublicUrl      string                      `protobuf:"bytes,3,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
-	MaxVolumeCount uint32                      `protobuf:"varint,4,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
-	MaxFileKey     uint64                      `protobuf:"varint,5,opt,name=max_file_key,json=maxFileKey,proto3" json:"max_file_key,omitempty"`
-	DataCenter     string                      `protobuf:"bytes,6,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
-	Rack           string                      `protobuf:"bytes,7,opt,name=rack,proto3" json:"rack,omitempty"`
-	AdminPort      uint32                      `protobuf:"varint,8,opt,name=admin_port,json=adminPort,proto3" json:"admin_port,omitempty"`
-	Volumes        []*VolumeInformationMessage `protobuf:"bytes,9,rep,name=volumes,proto3" json:"volumes,omitempty"`
+	Ip         string                      `protobuf:"bytes,1,opt,name=ip,proto3" json:"ip,omitempty"`
+	Port       uint32                      `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
+	PublicUrl  string                      `protobuf:"bytes,3,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+	MaxFileKey uint64                      `protobuf:"varint,5,opt,name=max_file_key,json=maxFileKey,proto3" json:"max_file_key,omitempty"`
+	DataCenter string                      `protobuf:"bytes,6,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
+	Rack       string                      `protobuf:"bytes,7,opt,name=rack,proto3" json:"rack,omitempty"`
+	AdminPort  uint32                      `protobuf:"varint,8,opt,name=admin_port,json=adminPort,proto3" json:"admin_port,omitempty"`
+	Volumes    []*VolumeInformationMessage `protobuf:"bytes,9,rep,name=volumes,proto3" json:"volumes,omitempty"`
 	// delta volumes
 	NewVolumes     []*VolumeShortInformationMessage `protobuf:"bytes,10,rep,name=new_volumes,json=newVolumes,proto3" json:"new_volumes,omitempty"`
 	DeletedVolumes []*VolumeShortInformationMessage `protobuf:"bytes,11,rep,name=deleted_volumes,json=deletedVolumes,proto3" json:"deleted_volumes,omitempty"`
@@ -50,9 +49,11 @@ type Heartbeat struct {
 	// erasure coding
 	EcShards []*VolumeEcShardInformationMessage `protobuf:"bytes,16,rep,name=ec_shards,json=ecShards,proto3" json:"ec_shards,omitempty"`
 	// delta erasure coding shards
-	NewEcShards     []*VolumeEcShardInformationMessage `protobuf:"bytes,17,rep,name=new_ec_shards,json=newEcShards,proto3" json:"new_ec_shards,omitempty"`
-	DeletedEcShards []*VolumeEcShardInformationMessage `protobuf:"bytes,18,rep,name=deleted_ec_shards,json=deletedEcShards,proto3" json:"deleted_ec_shards,omitempty"`
-	HasNoEcShards   bool                               `protobuf:"varint,19,opt,name=has_no_ec_shards,json=hasNoEcShards,proto3" json:"has_no_ec_shards,omitempty"`
+	NewEcShards       []*VolumeEcShardInformationMessage `protobuf:"bytes,17,rep,name=new_ec_shards,json=newEcShards,proto3" json:"new_ec_shards,omitempty"`
+	DeletedEcShards   []*VolumeEcShardInformationMessage `protobuf:"bytes,18,rep,name=deleted_ec_shards,json=deletedEcShards,proto3" json:"deleted_ec_shards,omitempty"`
+	HasNoEcShards     bool                               `protobuf:"varint,19,opt,name=has_no_ec_shards,json=hasNoEcShards,proto3" json:"has_no_ec_shards,omitempty"`
+	MaxVolumeCount    uint32                             `protobuf:"varint,4,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
+	MaxSsdVolumeCount uint32                             `protobuf:"varint,20,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
 }
 
 func (x *Heartbeat) Reset() {
@@ -108,13 +109,6 @@ func (x *Heartbeat) GetPublicUrl() string {
 	return ""
 }
 
-func (x *Heartbeat) GetMaxVolumeCount() uint32 {
-	if x != nil {
-		return x.MaxVolumeCount
-	}
-	return 0
-}
-
 func (x *Heartbeat) GetMaxFileKey() uint64 {
 	if x != nil {
 		return x.MaxFileKey
@@ -199,6 +193,20 @@ func (x *Heartbeat) GetHasNoEcShards() bool {
 	return false
 }
 
+func (x *Heartbeat) GetMaxVolumeCount() uint32 {
+	if x != nil {
+		return x.MaxVolumeCount
+	}
+	return 0
+}
+
+func (x *Heartbeat) GetMaxSsdVolumeCount() uint32 {
+	if x != nil {
+		return x.MaxSsdVolumeCount
+	}
+	return 0
+}
+
 type HeartbeatResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -297,6 +305,7 @@ type VolumeInformationMessage struct {
 	ModifiedAtSecond  int64  `protobuf:"varint,12,opt,name=modified_at_second,json=modifiedAtSecond,proto3" json:"modified_at_second,omitempty"`
 	RemoteStorageName string `protobuf:"bytes,13,opt,name=remote_storage_name,json=remoteStorageName,proto3" json:"remote_storage_name,omitempty"`
 	RemoteStorageKey  string `protobuf:"bytes,14,opt,name=remote_storage_key,json=remoteStorageKey,proto3" json:"remote_storage_key,omitempty"`
+	VolumeType        string `protobuf:"bytes,15,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *VolumeInformationMessage) Reset() {
@@ -429,6 +438,13 @@ func (x *VolumeInformationMessage) GetRemoteStorageKey() string {
 	return ""
 }
 
+func (x *VolumeInformationMessage) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type VolumeShortInformationMessage struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -439,6 +455,7 @@ type VolumeShortInformationMessage struct {
 	ReplicaPlacement uint32 `protobuf:"varint,8,opt,name=replica_placement,json=replicaPlacement,proto3" json:"replica_placement,omitempty"`
 	Version          uint32 `protobuf:"varint,9,opt,name=version,proto3" json:"version,omitempty"`
 	Ttl              uint32 `protobuf:"varint,10,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	VolumeType       string `protobuf:"bytes,15,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *VolumeShortInformationMessage) Reset() {
@@ -508,6 +525,13 @@ func (x *VolumeShortInformationMessage) GetTtl() uint32 {
 	return 0
 }
 
+func (x *VolumeShortInformationMessage) GetVolumeType() string {
+	if x != nil {
+		return x.VolumeType
+	}
+	return ""
+}
+
 type VolumeEcShardInformationMessage struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1611,6 +1635,8 @@ type DataNodeInfo struct {
 	VolumeInfos       []*VolumeInformationMessage        `protobuf:"bytes,6,rep,name=volume_infos,json=volumeInfos,proto3" json:"volume_infos,omitempty"`
 	EcShardInfos      []*VolumeEcShardInformationMessage `protobuf:"bytes,7,rep,name=ec_shard_infos,json=ecShardInfos,proto3" json:"ec_shard_infos,omitempty"`
 	RemoteVolumeCount uint64                             `protobuf:"varint,8,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+	MaxSsdVolumeCount uint64                             `protobuf:"varint,9,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
+	SsdVolumeCount    uint64                             `protobuf:"varint,10,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
 }
 
 func (x *DataNodeInfo) Reset() {
@@ -1701,6 +1727,20 @@ func (x *DataNodeInfo) GetRemoteVolumeCount() uint64 {
 	return 0
 }
 
+func (x *DataNodeInfo) GetMaxSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxSsdVolumeCount
+	}
+	return 0
+}
+
+func (x *DataNodeInfo) GetSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.SsdVolumeCount
+	}
+	return 0
+}
+
 type RackInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1713,6 +1753,8 @@ type RackInfo struct {
 	ActiveVolumeCount uint64          `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
 	DataNodeInfos     []*DataNodeInfo `protobuf:"bytes,6,rep,name=data_node_infos,json=dataNodeInfos,proto3" json:"data_node_infos,omitempty"`
 	RemoteVolumeCount uint64          `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+	MaxSsdVolumeCount uint64          `protobuf:"varint,8,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
+	SsdVolumeCount    uint64          `protobuf:"varint,9,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
 }
 
 func (x *RackInfo) Reset() {
@@ -1796,6 +1838,20 @@ func (x *RackInfo) GetRemoteVolumeCount() uint64 {
 	return 0
 }
 
+func (x *RackInfo) GetMaxSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxSsdVolumeCount
+	}
+	return 0
+}
+
+func (x *RackInfo) GetSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.SsdVolumeCount
+	}
+	return 0
+}
+
 type DataCenterInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1808,6 +1864,8 @@ type DataCenterInfo struct {
 	ActiveVolumeCount uint64      `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
 	RackInfos         []*RackInfo `protobuf:"bytes,6,rep,name=rack_infos,json=rackInfos,proto3" json:"rack_infos,omitempty"`
 	RemoteVolumeCount uint64      `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+	MaxSsdVolumeCount uint64      `protobuf:"varint,8,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
+	SsdVolumeCount    uint64      `protobuf:"varint,9,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
 }
 
 func (x *DataCenterInfo) Reset() {
@@ -1891,6 +1949,20 @@ func (x *DataCenterInfo) GetRemoteVolumeCount() uint64 {
 	return 0
 }
 
+func (x *DataCenterInfo) GetMaxSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxSsdVolumeCount
+	}
+	return 0
+}
+
+func (x *DataCenterInfo) GetSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.SsdVolumeCount
+	}
+	return 0
+}
+
 type TopologyInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1903,6 +1975,8 @@ type TopologyInfo struct {
 	ActiveVolumeCount uint64            `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
 	DataCenterInfos   []*DataCenterInfo `protobuf:"bytes,6,rep,name=data_center_infos,json=dataCenterInfos,proto3" json:"data_center_infos,omitempty"`
 	RemoteVolumeCount uint64            `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+	MaxSsdVolumeCount uint64            `protobuf:"varint,8,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
+	SsdVolumeCount    uint64            `protobuf:"varint,9,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
 }
 
 func (x *TopologyInfo) Reset() {
@@ -1986,6 +2060,20 @@ func (x *TopologyInfo) GetRemoteVolumeCount() uint64 {
 	return 0
 }
 
+func (x *TopologyInfo) GetMaxSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxSsdVolumeCount
+	}
+	return 0
+}
+
+func (x *TopologyInfo) GetSsdVolumeCount() uint64 {
+	if x != nil {
+		return x.SsdVolumeCount
+	}
+	return 0
+}
+
 type VolumeListRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2881,505 +2969,535 @@ var File_master_proto protoreflect.FileDescriptor
 
 var file_master_proto_rawDesc = []byte{
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+	0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
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+	0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x12, 0x23, 0x2e, 0x6d,
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+	0x74, 0x1a, 0x24, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x52, 0x65,
+	0x6c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52,
+	0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x32, 0x5a, 0x30, 0x67, 0x69, 0x74,
+	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75, 0x73,
+	0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65, 0x64,
+	0x2f, 0x70, 0x62, 0x2f, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/weed/server/master_grpc_server.go b/weed/server/master_grpc_server.go
index 9df88e956..62b8cdf07 100644
--- a/weed/server/master_grpc_server.go
+++ b/weed/server/master_grpc_server.go
@@ -67,9 +67,7 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			dcName, rackName := ms.Topo.Configuration.Locate(heartbeat.Ip, heartbeat.DataCenter, heartbeat.Rack)
 			dc := ms.Topo.GetOrCreateDataCenter(dcName)
 			rack := dc.GetOrCreateRack(rackName)
-			dn = rack.GetOrCreateDataNode(heartbeat.Ip,
-				int(heartbeat.Port), heartbeat.PublicUrl,
-				int64(heartbeat.MaxVolumeCount))
+			dn = rack.GetOrCreateDataNode(heartbeat.Ip, int(heartbeat.Port), heartbeat.PublicUrl, int64(heartbeat.MaxVolumeCount), int64(heartbeat.MaxSsdVolumeCount))
 			glog.V(0).Infof("added volume server %v:%d", heartbeat.GetIp(), heartbeat.GetPort())
 			if err := stream.Send(&master_pb.HeartbeatResponse{
 				VolumeSizeLimit: uint64(ms.option.VolumeSizeLimitMB) * 1024 * 1024,
@@ -83,6 +81,10 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			delta := int64(heartbeat.MaxVolumeCount) - dn.GetMaxVolumeCount()
 			dn.UpAdjustMaxVolumeCountDelta(delta)
 		}
+		if heartbeat.MaxSsdVolumeCount != 0 && dn.GetMaxSsdVolumeCount() != int64(heartbeat.MaxSsdVolumeCount) {
+			delta := int64(heartbeat.MaxSsdVolumeCount) - dn.GetMaxSsdVolumeCount()
+			dn.UpAdjustMaxSsdVolumeCountDelta(delta)
+		}
 
 		glog.V(4).Infof("master received heartbeat %s", heartbeat.String())
 		message := &master_pb.VolumeLocation{
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index 08ac351d4..e84d9b386 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -126,7 +126,7 @@ func (ms *MasterServer) Statistics(ctx context.Context, req *master_pb.Statistic
 	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, storage.VolumeType(req.VolumeType))
 	stats := volumeLayout.Stats()
 
-	totalSize := ms.Topo.GetMaxVolumeCount() * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
+	totalSize := (ms.Topo.GetMaxVolumeCount() + ms.Topo.GetMaxSsdVolumeCount()) * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
 
 	resp := &master_pb.StatisticsResponse{
 		TotalSize: uint64(totalSize),
diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index 468f75890..16f4198e8 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -20,6 +20,7 @@ type VolumeServer struct {
 	pulseSeconds    int
 	dataCenter      string
 	rack            string
+	VolumeType      storage.VolumeType
 	store           *storage.Store
 	guard           *security.Guard
 	grpcDialOption  grpc.DialOption
@@ -38,7 +39,7 @@ type VolumeServer struct {
 func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	port int, publicUrl string,
 	folders []string, maxCounts []int, minFreeSpacePercents []float32,
-	idxFolder string,
+	idxFolder string, volumeType storage.VolumeType,
 	needleMapKind storage.NeedleMapType,
 	masterNodes []string, pulseSeconds int,
 	dataCenter string, rack string,
@@ -63,6 +64,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 		pulseSeconds:            pulseSeconds,
 		dataCenter:              dataCenter,
 		rack:                    rack,
+		VolumeType:              volumeType,
 		needleMapKind:           needleMapKind,
 		FixJpgOrientation:       fixJpgOrientation,
 		ReadRedirect:            readRedirect,
@@ -76,7 +78,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 
 	vs.checkWithMaster()
 
-	vs.store = storage.NewStore(vs.grpcDialOption, port, ip, publicUrl, folders, maxCounts, minFreeSpacePercents, idxFolder, vs.needleMapKind)
+	vs.store = storage.NewStore(vs.grpcDialOption, port, ip, publicUrl, folders, maxCounts, minFreeSpacePercents, idxFolder, vs.needleMapKind, vs.VolumeType)
 	vs.guard = security.NewGuard(whiteList, signingKey, expiresAfterSec, readSigningKey, readExpiresAfterSec)
 
 	handleStaticResources(adminMux)
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index 2d4d120af..ef224cc4a 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -19,6 +19,7 @@ import (
 type DiskLocation struct {
 	Directory              string
 	IdxDirectory           string
+	VolumeType             VolumeType
 	MaxVolumeCount         int
 	OriginalMaxVolumeCount int
 	MinFreeSpacePercent    float32
@@ -32,7 +33,7 @@ type DiskLocation struct {
 	isDiskSpaceLow bool
 }
 
-func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32, idxDir string) *DiskLocation {
+func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32, idxDir string, volumeType VolumeType) *DiskLocation {
 	dir = util.ResolvePath(dir)
 	if idxDir == "" {
 		idxDir = dir
@@ -42,6 +43,7 @@ func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32
 	location := &DiskLocation{
 		Directory:              dir,
 		IdxDirectory:           idxDir,
+		VolumeType:             volumeType,
 		MaxVolumeCount:         maxVolumeCount,
 		OriginalMaxVolumeCount: maxVolumeCount,
 		MinFreeSpacePercent:    minFreeSpacePercent,
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 83c40a01a..1a1bc2e67 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -52,11 +52,11 @@ func (s *Store) String() (str string) {
 	return
 }
 
-func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType) (s *Store) {
+func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType, volumeType VolumeType) (s *Store) {
 	s = &Store{grpcDialOption: grpcDialOption, Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapType: needleMapKind}
 	s.Locations = make([]*DiskLocation, 0)
 	for i := 0; i < len(dirnames); i++ {
-		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder)
+		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder, volumeType)
 		location.loadExistingVolumes(needleMapKind)
 		s.Locations = append(s.Locations, location)
 		stats.VolumeServerMaxVolumeCounter.Add(float64(maxVolumeCounts[i]))
@@ -203,12 +203,18 @@ func (s *Store) GetRack() string {
 func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 	var volumeMessages []*master_pb.VolumeInformationMessage
 	maxVolumeCount := 0
+	maxSsdVolumeCount := 0
 	var maxFileKey NeedleId
 	collectionVolumeSize := make(map[string]uint64)
 	collectionVolumeReadOnlyCount := make(map[string]map[string]uint8)
 	for _, location := range s.Locations {
 		var deleteVids []needle.VolumeId
-		maxVolumeCount = maxVolumeCount + location.MaxVolumeCount
+		switch location.VolumeType {
+		case SsdType:
+			maxSsdVolumeCount = maxSsdVolumeCount + location.MaxVolumeCount
+		case HardDriveType:
+			maxVolumeCount = maxVolumeCount + location.MaxVolumeCount
+		}
 		location.volumesLock.RLock()
 		for _, v := range location.volumes {
 			curMaxFileKey, volumeMessage := v.ToVolumeInformationMessage()
@@ -280,15 +286,16 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 	}
 
 	return &master_pb.Heartbeat{
-		Ip:             s.Ip,
-		Port:           uint32(s.Port),
-		PublicUrl:      s.PublicUrl,
-		MaxVolumeCount: uint32(maxVolumeCount),
-		MaxFileKey:     NeedleIdToUint64(maxFileKey),
-		DataCenter:     s.dataCenter,
-		Rack:           s.rack,
-		Volumes:        volumeMessages,
-		HasNoVolumes:   len(volumeMessages) == 0,
+		Ip:                s.Ip,
+		Port:              uint32(s.Port),
+		PublicUrl:         s.PublicUrl,
+		MaxVolumeCount:    uint32(maxVolumeCount),
+		MaxSsdVolumeCount: uint32(maxSsdVolumeCount),
+		MaxFileKey:        NeedleIdToUint64(maxFileKey),
+		DataCenter:        s.dataCenter,
+		Rack:              s.rack,
+		Volumes:           volumeMessages,
+		HasNoVolumes:      len(volumeMessages) == 0,
 	}
 
 }
diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index 7712c5eda..fdfb68c43 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -47,7 +47,7 @@ type Volume struct {
 	volumeInfo *volume_server_pb.VolumeInfo
 	location   *DiskLocation
 
-	lastIoError     error
+	lastIoError error
 }
 
 func NewVolume(dirname string, dirIdx string, collection string, id needle.VolumeId, needleMapKind NeedleMapType, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) (v *Volume, e error) {
@@ -262,6 +262,7 @@ func (v *Volume) ToVolumeInformationMessage() (types.NeedleId, *master_pb.Volume
 		Ttl:              v.Ttl.ToUint32(),
 		CompactRevision:  uint32(v.SuperBlock.CompactionRevision),
 		ModifiedAtSecond: modTime.Unix(),
+		VolumeType:       string(v.location.VolumeType),
 	}
 
 	volumeInfo.RemoteStorageName, volumeInfo.RemoteStorageKey = v.RemoteStorageNameKey()
diff --git a/weed/storage/volume_info.go b/weed/storage/volume_info.go
index 751ebb909..5aaf42735 100644
--- a/weed/storage/volume_info.go
+++ b/weed/storage/volume_info.go
@@ -14,7 +14,7 @@ type VolumeInfo struct {
 	Size              uint64
 	ReplicaPlacement  *super_block.ReplicaPlacement
 	Ttl               *needle.TTL
-	VolumeType        VolumeType
+	VolumeType        string
 	Collection        string
 	Version           needle.Version
 	FileCount         int
@@ -41,6 +41,7 @@ func NewVolumeInfo(m *master_pb.VolumeInformationMessage) (vi VolumeInfo, err er
 		ModifiedAtSecond:  m.ModifiedAtSecond,
 		RemoteStorageName: m.RemoteStorageName,
 		RemoteStorageKey:  m.RemoteStorageKey,
+		VolumeType:        m.VolumeType,
 	}
 	rp, e := super_block.NewReplicaPlacementFromByte(byte(m.ReplicaPlacement))
 	if e != nil {
@@ -91,6 +92,7 @@ func (vi VolumeInfo) ToVolumeInformationMessage() *master_pb.VolumeInformationMe
 		ModifiedAtSecond:  vi.ModifiedAtSecond,
 		RemoteStorageName: vi.RemoteStorageName,
 		RemoteStorageKey:  vi.RemoteStorageKey,
+		VolumeType:        vi.VolumeType,
 	}
 }
 
diff --git a/weed/topology/collection.go b/weed/topology/collection.go
index e3aab2f76..d2bdeab62 100644
--- a/weed/topology/collection.go
+++ b/weed/topology/collection.go
@@ -44,6 +44,17 @@ func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, t
 	return vl.(*VolumeLayout)
 }
 
+func (c *Collection) DeleteVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) {
+	keyString := rp.String()
+	if ttl != nil {
+		keyString += ttl.String()
+	}
+	if volumeType != storage.HardDriveType {
+		keyString += string(volumeType)
+	}
+	c.storageType2VolumeLayout.Delete(keyString)
+}
+
 func (c *Collection) Lookup(vid needle.VolumeId) []*DataNode {
 	for _, vl := range c.storageType2VolumeLayout.Items() {
 		if vl != nil {
diff --git a/weed/topology/data_center.go b/weed/topology/data_center.go
index dc3accb71..6ca94b52d 100644
--- a/weed/topology/data_center.go
+++ b/weed/topology/data_center.go
@@ -31,6 +31,7 @@ func (dc *DataCenter) ToMap() interface{} {
 	m := make(map[string]interface{})
 	m["Id"] = dc.Id()
 	m["Max"] = dc.GetMaxVolumeCount()
+	m["MaxSsd"] = dc.GetMaxSsdVolumeCount()
 	m["Free"] = dc.FreeSpace()
 	var racks []interface{}
 	for _, c := range dc.Children() {
@@ -46,6 +47,8 @@ func (dc *DataCenter) ToDataCenterInfo() *master_pb.DataCenterInfo {
 		Id:                string(dc.Id()),
 		VolumeCount:       uint64(dc.GetVolumeCount()),
 		MaxVolumeCount:    uint64(dc.GetMaxVolumeCount()),
+		MaxSsdVolumeCount: uint64(dc.GetMaxSsdVolumeCount()),
+		SsdVolumeCount:    uint64(dc.GetSsdVolumeCount()),
 		FreeVolumeCount:   uint64(dc.FreeSpace()),
 		ActiveVolumeCount: uint64(dc.GetActiveVolumeCount()),
 		RemoteVolumeCount: uint64(dc.GetRemoteVolumeCount()),
diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 0a4df63d0..0ea234202 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -50,7 +50,11 @@ func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO
 func (dn *DataNode) doAddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
 	if oldV, ok := dn.volumes[v.Id]; !ok {
 		dn.volumes[v.Id] = v
-		dn.UpAdjustVolumeCountDelta(1)
+		if v.VolumeType == storage.SsdType {
+			dn.UpAdjustSsdVolumeCountDelta(1)
+		} else {
+			dn.UpAdjustVolumeCountDelta(1)
+		}
 		if v.IsRemote() {
 			dn.UpAdjustRemoteVolumeCountDelta(1)
 		}
@@ -89,7 +93,11 @@ func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolume
 			glog.V(0).Infoln("Deleting volume id:", vid)
 			delete(dn.volumes, vid)
 			deletedVolumes = append(deletedVolumes, v)
-			dn.UpAdjustVolumeCountDelta(-1)
+			if v.VolumeType == storage.SsdType {
+				dn.UpAdjustSsdVolumeCountDelta(-1)
+			} else {
+				dn.UpAdjustVolumeCountDelta(-1)
+			}
 			if v.IsRemote() {
 				dn.UpAdjustRemoteVolumeCountDelta(-1)
 			}
@@ -116,7 +124,11 @@ func (dn *DataNode) DeltaUpdateVolumes(newVolumes, deletedVolumes []storage.Volu
 
 	for _, v := range deletedVolumes {
 		delete(dn.volumes, v.Id)
-		dn.UpAdjustVolumeCountDelta(-1)
+		if v.VolumeType == storage.SsdType {
+			dn.UpAdjustSsdVolumeCountDelta(-1)
+		} else {
+			dn.UpAdjustVolumeCountDelta(-1)
+		}
 		if v.IsRemote() {
 			dn.UpAdjustRemoteVolumeCountDelta(-1)
 		}
@@ -182,6 +194,7 @@ func (dn *DataNode) ToMap() interface{} {
 	ret["VolumeIds"] = dn.GetVolumeIds()
 	ret["EcShards"] = dn.GetEcShardCount()
 	ret["Max"] = dn.GetMaxVolumeCount()
+	ret["MaxSsd"] = dn.GetMaxSsdVolumeCount()
 	ret["Free"] = dn.FreeSpace()
 	ret["PublicUrl"] = dn.PublicUrl
 	return ret
@@ -192,6 +205,8 @@ func (dn *DataNode) ToDataNodeInfo() *master_pb.DataNodeInfo {
 		Id:                string(dn.Id()),
 		VolumeCount:       uint64(dn.GetVolumeCount()),
 		MaxVolumeCount:    uint64(dn.GetMaxVolumeCount()),
+		MaxSsdVolumeCount: uint64(dn.GetMaxSsdVolumeCount()),
+		SsdVolumeCount:    uint64(dn.GetSsdVolumeCount()),
 		FreeVolumeCount:   uint64(dn.FreeSpace()),
 		ActiveVolumeCount: uint64(dn.GetActiveVolumeCount()),
 		RemoteVolumeCount: uint64(dn.GetRemoteVolumeCount()),
diff --git a/weed/topology/node.go b/weed/topology/node.go
index 114417edf..c916857c0 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -19,17 +19,21 @@ type Node interface {
 	FreeSpace() int64
 	ReserveOneVolume(r int64) (*DataNode, error)
 	UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta int64)
+	UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta int64)
 	UpAdjustVolumeCountDelta(volumeCountDelta int64)
+	UpAdjustSsdVolumeCountDelta(ssdVolumeCountDelta int64)
 	UpAdjustRemoteVolumeCountDelta(remoteVolumeCountDelta int64)
 	UpAdjustEcShardCountDelta(ecShardCountDelta int64)
 	UpAdjustActiveVolumeCountDelta(activeVolumeCountDelta int64)
 	UpAdjustMaxVolumeId(vid needle.VolumeId)
 
 	GetVolumeCount() int64
+	GetSsdVolumeCount() int64
 	GetEcShardCount() int64
 	GetActiveVolumeCount() int64
 	GetRemoteVolumeCount() int64
 	GetMaxVolumeCount() int64
+	GetMaxSsdVolumeCount() int64
 	GetMaxVolumeId() needle.VolumeId
 	SetParent(Node)
 	LinkChildNode(node Node)
@@ -47,9 +51,11 @@ type Node interface {
 type NodeImpl struct {
 	volumeCount       int64
 	remoteVolumeCount int64
+	ssdVolumeCount    int64
 	activeVolumeCount int64
 	ecShardCount      int64
 	maxVolumeCount    int64
+	maxSsdVolumeCount int64
 	id                NodeId
 	parent            Node
 	sync.RWMutex      // lock children
@@ -143,7 +149,7 @@ func (n *NodeImpl) Id() NodeId {
 	return n.id
 }
 func (n *NodeImpl) FreeSpace() int64 {
-	freeVolumeSlotCount := n.maxVolumeCount + n.remoteVolumeCount - n.volumeCount
+	freeVolumeSlotCount := n.maxVolumeCount + n.maxSsdVolumeCount + n.remoteVolumeCount - n.volumeCount - n.ssdVolumeCount
 	if n.ecShardCount > 0 {
 		freeVolumeSlotCount = freeVolumeSlotCount - n.ecShardCount/erasure_coding.DataShardsCount - 1
 	}
@@ -200,6 +206,15 @@ func (n *NodeImpl) UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta int64) { //ca
 		n.parent.UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta)
 	}
 }
+func (n *NodeImpl) UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta int64) { //can be negative
+	if maxSsdVolumeCountDelta == 0 {
+		return
+	}
+	atomic.AddInt64(&n.maxSsdVolumeCount, maxSsdVolumeCountDelta)
+	if n.parent != nil {
+		n.parent.UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta)
+	}
+}
 func (n *NodeImpl) UpAdjustVolumeCountDelta(volumeCountDelta int64) { //can be negative
 	if volumeCountDelta == 0 {
 		return
@@ -218,6 +233,15 @@ func (n *NodeImpl) UpAdjustRemoteVolumeCountDelta(remoteVolumeCountDelta int64)
 		n.parent.UpAdjustRemoteVolumeCountDelta(remoteVolumeCountDelta)
 	}
 }
+func (n *NodeImpl) UpAdjustSsdVolumeCountDelta(ssdVolumeCountDelta int64) { //can be negative
+	if ssdVolumeCountDelta == 0 {
+		return
+	}
+	atomic.AddInt64(&n.ssdVolumeCount, ssdVolumeCountDelta)
+	if n.parent != nil {
+		n.parent.UpAdjustSsdVolumeCountDelta(ssdVolumeCountDelta)
+	}
+}
 func (n *NodeImpl) UpAdjustEcShardCountDelta(ecShardCountDelta int64) { //can be negative
 	if ecShardCountDelta == 0 {
 		return
@@ -250,6 +274,9 @@ func (n *NodeImpl) GetMaxVolumeId() needle.VolumeId {
 func (n *NodeImpl) GetVolumeCount() int64 {
 	return n.volumeCount
 }
+func (n *NodeImpl) GetSsdVolumeCount() int64 {
+	return n.ssdVolumeCount
+}
 func (n *NodeImpl) GetEcShardCount() int64 {
 	return n.ecShardCount
 }
@@ -262,6 +289,9 @@ func (n *NodeImpl) GetActiveVolumeCount() int64 {
 func (n *NodeImpl) GetMaxVolumeCount() int64 {
 	return n.maxVolumeCount
 }
+func (n *NodeImpl) GetMaxSsdVolumeCount() int64 {
+	return n.maxSsdVolumeCount
+}
 
 func (n *NodeImpl) LinkChildNode(node Node) {
 	n.Lock()
@@ -269,8 +299,10 @@ func (n *NodeImpl) LinkChildNode(node Node) {
 	if n.children[node.Id()] == nil {
 		n.children[node.Id()] = node
 		n.UpAdjustMaxVolumeCountDelta(node.GetMaxVolumeCount())
+		n.UpAdjustMaxSsdVolumeCountDelta(node.GetMaxSsdVolumeCount())
 		n.UpAdjustMaxVolumeId(node.GetMaxVolumeId())
 		n.UpAdjustVolumeCountDelta(node.GetVolumeCount())
+		n.UpAdjustSsdVolumeCountDelta(node.GetSsdVolumeCount())
 		n.UpAdjustRemoteVolumeCountDelta(node.GetRemoteVolumeCount())
 		n.UpAdjustEcShardCountDelta(node.GetEcShardCount())
 		n.UpAdjustActiveVolumeCountDelta(node.GetActiveVolumeCount())
@@ -287,10 +319,12 @@ func (n *NodeImpl) UnlinkChildNode(nodeId NodeId) {
 		node.SetParent(nil)
 		delete(n.children, node.Id())
 		n.UpAdjustVolumeCountDelta(-node.GetVolumeCount())
+		n.UpAdjustSsdVolumeCountDelta(-node.GetSsdVolumeCount())
 		n.UpAdjustRemoteVolumeCountDelta(-node.GetRemoteVolumeCount())
 		n.UpAdjustEcShardCountDelta(-node.GetEcShardCount())
 		n.UpAdjustActiveVolumeCountDelta(-node.GetActiveVolumeCount())
 		n.UpAdjustMaxVolumeCountDelta(-node.GetMaxVolumeCount())
+		n.UpAdjustMaxSsdVolumeCountDelta(-node.GetMaxSsdVolumeCount())
 		glog.V(0).Infoln(n, "removes", node.Id())
 	}
 }
diff --git a/weed/topology/rack.go b/weed/topology/rack.go
index 1921c0c05..35563abe5 100644
--- a/weed/topology/rack.go
+++ b/weed/topology/rack.go
@@ -28,7 +28,7 @@ func (r *Rack) FindDataNode(ip string, port int) *DataNode {
 	}
 	return nil
 }
-func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVolumeCount int64) *DataNode {
+func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVolumeCount int64, maxSsdVolumeCount int64) *DataNode {
 	for _, c := range r.Children() {
 		dn := c.(*DataNode)
 		if dn.MatchLocation(ip, port) {
@@ -41,6 +41,7 @@ func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVol
 	dn.Port = port
 	dn.PublicUrl = publicUrl
 	dn.maxVolumeCount = maxVolumeCount
+	dn.maxSsdVolumeCount = maxSsdVolumeCount
 	dn.LastSeen = time.Now().Unix()
 	r.LinkChildNode(dn)
 	return dn
@@ -50,6 +51,7 @@ func (r *Rack) ToMap() interface{} {
 	m := make(map[string]interface{})
 	m["Id"] = r.Id()
 	m["Max"] = r.GetMaxVolumeCount()
+	m["MaxSsd"] = r.GetMaxSsdVolumeCount()
 	m["Free"] = r.FreeSpace()
 	var dns []interface{}
 	for _, c := range r.Children() {
@@ -65,6 +67,8 @@ func (r *Rack) ToRackInfo() *master_pb.RackInfo {
 		Id:                string(r.Id()),
 		VolumeCount:       uint64(r.GetVolumeCount()),
 		MaxVolumeCount:    uint64(r.GetMaxVolumeCount()),
+		MaxSsdVolumeCount: uint64(r.GetMaxSsdVolumeCount()),
+		SsdVolumeCount:    uint64(r.GetSsdVolumeCount()),
 		FreeVolumeCount:   uint64(r.FreeSpace()),
 		ActiveVolumeCount: uint64(r.GetActiveVolumeCount()),
 		RemoteVolumeCount: uint64(r.GetRemoteVolumeCount()),
diff --git a/weed/topology/topology.go b/weed/topology/topology.go
index e02982451..62332f805 100644
--- a/weed/topology/topology.go
+++ b/weed/topology/topology.go
@@ -176,17 +176,27 @@ func (t *Topology) DeleteCollection(collectionName string) {
 	t.collectionMap.Delete(collectionName)
 }
 
+func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) {
+	collection, found := t.FindCollection(collectionName)
+	if !found {
+		return
+	}
+	collection.DeleteVolumeLayout(rp, ttl, volumeType)
+}
+
 func (t *Topology) RegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
-	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
+	volumeType, _ := storage.ToVolumeType(v.VolumeType)
+	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
 	vl.RegisterVolume(&v, dn)
 	vl.EnsureCorrectWritables(&v)
 }
 func (t *Topology) UnRegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
 	glog.Infof("removing volume info: %+v", v)
-	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
+	volumeType, _ := storage.ToVolumeType(v.VolumeType)
+	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
 	volumeLayout.UnRegisterVolume(&v, dn)
 	if volumeLayout.isEmpty() {
-		t.DeleteCollection(v.Collection)
+		t.DeleteLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
 	}
 }
 
@@ -222,7 +232,8 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 		t.UnRegisterVolumeLayout(v, dn)
 	}
 	for _, v := range changedVolumes {
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
+		volumeType, _ := storage.ToVolumeType(v.VolumeType)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
 		vl.EnsureCorrectWritables(&v)
 	}
 	return
diff --git a/weed/topology/topology_event_handling.go b/weed/topology/topology_event_handling.go
index 98957a964..076900069 100644
--- a/weed/topology/topology_event_handling.go
+++ b/weed/topology/topology_event_handling.go
@@ -37,7 +37,8 @@ func (t *Topology) StartRefreshWritableVolumes(grpcDialOption grpc.DialOption, g
 	}()
 }
 func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
-	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, volumeInfo.VolumeType)
+	volumeType, _ := storage.ToVolumeType(volumeInfo.VolumeType)
+	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, volumeType)
 	if !vl.SetVolumeCapacityFull(volumeInfo.Id) {
 		return false
 	}
@@ -55,13 +56,16 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 	for _, v := range dn.GetVolumes() {
 		glog.V(0).Infoln("Removing Volume", v.Id, "from the dead volume server", dn.Id())
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, v.VolumeType)
+		volumeType, _ := storage.ToVolumeType(v.VolumeType)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
 		vl.SetVolumeUnavailable(dn, v.Id)
 	}
 	dn.UpAdjustVolumeCountDelta(-dn.GetVolumeCount())
+	dn.UpAdjustSsdVolumeCountDelta(-dn.GetSsdVolumeCount())
 	dn.UpAdjustRemoteVolumeCountDelta(-dn.GetRemoteVolumeCount())
 	dn.UpAdjustActiveVolumeCountDelta(-dn.GetActiveVolumeCount())
 	dn.UpAdjustMaxVolumeCountDelta(-dn.GetMaxVolumeCount())
+	dn.UpAdjustMaxSsdVolumeCountDelta(-dn.GetMaxSsdVolumeCount())
 	if dn.Parent() != nil {
 		dn.Parent().UnlinkChildNode(dn.Id())
 	}
diff --git a/weed/topology/topology_map.go b/weed/topology/topology_map.go
index 73c55d77d..eb8990ab2 100644
--- a/weed/topology/topology_map.go
+++ b/weed/topology/topology_map.go
@@ -5,6 +5,7 @@ import "github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 func (t *Topology) ToMap() interface{} {
 	m := make(map[string]interface{})
 	m["Max"] = t.GetMaxVolumeCount()
+	m["MaxSsd"] = t.GetMaxSsdVolumeCount()
 	m["Free"] = t.FreeSpace()
 	var dcs []interface{}
 	for _, c := range t.Children() {
@@ -30,6 +31,7 @@ func (t *Topology) ToMap() interface{} {
 func (t *Topology) ToVolumeMap() interface{} {
 	m := make(map[string]interface{})
 	m["Max"] = t.GetMaxVolumeCount()
+	m["MaxSsd"] = t.GetMaxSsdVolumeCount()
 	m["Free"] = t.FreeSpace()
 	dcs := make(map[NodeId]interface{})
 	for _, c := range t.Children() {
@@ -83,9 +85,11 @@ func (t *Topology) ToTopologyInfo() *master_pb.TopologyInfo {
 		Id:                string(t.Id()),
 		VolumeCount:       uint64(t.GetVolumeCount()),
 		MaxVolumeCount:    uint64(t.GetMaxVolumeCount()),
+		MaxSsdVolumeCount: uint64(t.GetMaxSsdVolumeCount()),
 		FreeVolumeCount:   uint64(t.FreeSpace()),
 		ActiveVolumeCount: uint64(t.GetActiveVolumeCount()),
 		RemoteVolumeCount: uint64(t.GetRemoteVolumeCount()),
+		SsdVolumeCount:    uint64(t.GetSsdVolumeCount()),
 	}
 	for _, c := range t.Children() {
 		dc := c.(*DataCenter)
diff --git a/weed/topology/topology_test.go b/weed/topology/topology_test.go
index 9bcf2331e..07dc22681 100644
--- a/weed/topology/topology_test.go
+++ b/weed/topology/topology_test.go
@@ -27,7 +27,7 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 
 	dc := topo.GetOrCreateDataCenter("dc1")
 	rack := dc.GetOrCreateRack("rack1")
-	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", 25)
+	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", 25, 12)
 
 	{
 		volumeCount := 7
@@ -48,10 +48,28 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 			volumeMessages = append(volumeMessages, volumeMessage)
 		}
 
+		for k := 1; k <= volumeCount; k++ {
+			volumeMessage := &master_pb.VolumeInformationMessage{
+				Id:               uint32(volumeCount + k),
+				Size:             uint64(25432),
+				Collection:       "",
+				FileCount:        uint64(2343),
+				DeleteCount:      uint64(345),
+				DeletedByteCount: 34524,
+				ReadOnly:         false,
+				ReplicaPlacement: uint32(0),
+				Version:          uint32(needle.CurrentVersion),
+				Ttl:              0,
+				VolumeType:       "ssd",
+			}
+			volumeMessages = append(volumeMessages, volumeMessage)
+		}
+
 		topo.SyncDataNodeRegistration(volumeMessages, dn)
 
-		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount)
+		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount*2)
 		assert(t, "volumeCount", int(topo.volumeCount), volumeCount)
+		assert(t, "ssdVolumeCount", int(topo.ssdVolumeCount), volumeCount)
 	}
 
 	{
@@ -115,7 +133,7 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 			nil,
 			dn)
 
-		for vid, _ := range layout.vid2location {
+		for vid := range layout.vid2location {
 			println("after add volume id", vid)
 		}
 		for _, vid := range layout.writables {
@@ -144,12 +162,13 @@ func TestAddRemoveVolume(t *testing.T) {
 
 	dc := topo.GetOrCreateDataCenter("dc1")
 	rack := dc.GetOrCreateRack("rack1")
-	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", 25)
+	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", 25, 12)
 
 	v := storage.VolumeInfo{
 		Id:               needle.VolumeId(1),
 		Size:             100,
 		Collection:       "xcollection",
+		VolumeType:       "ssd",
 		FileCount:        123,
 		DeleteCount:      23,
 		DeletedByteCount: 45,

From 17372ac3da566d303982470724a24b67a2815a8f Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 03:40:33 -0800
Subject: [PATCH 003/140] balance ssd volumes

---
 weed/shell/command_volume_balance.go         | 68 ++++++++++++++++----
 weed/shell/command_volume_server_evacuate.go |  2 +-
 2 files changed, 55 insertions(+), 15 deletions(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index 928dec02a..4a9247cb5 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
 	"io"
 	"os"
@@ -111,7 +112,7 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 
 func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
-	// balance writable volumes
+	// balance writable hdd volumes
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -119,14 +120,14 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return !v.ReadOnly && v.Size < volumeSizeLimit
+			return v.VolumeType == string(storage.HardDriveType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
 		})
 	}
-	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, sortWritableVolumes, applyBalancing); err != nil {
+	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
 		return err
 	}
 
-	// balance readable volumes
+	// balance readable hdd volumes
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -134,10 +135,40 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.ReadOnly || v.Size >= volumeSizeLimit
+			return v.VolumeType == string(storage.HardDriveType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
 		})
 	}
-	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, sortReadOnlyVolumes, applyBalancing); err != nil {
+	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
+		return err
+	}
+
+	// balance writable ssd volumes
+	for _, n := range nodes {
+		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
+			if collection != "ALL_COLLECTIONS" {
+				if v.Collection != collection {
+					return false
+				}
+			}
+			return v.VolumeType == string(storage.SsdType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
+		})
+	}
+	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxSsdVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
+		return err
+	}
+
+	// balance readable ssd volumes
+	for _, n := range nodes {
+		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
+			if collection != "ALL_COLLECTIONS" {
+				if v.Collection != collection {
+					return false
+				}
+			}
+			return v.VolumeType == string(storage.SsdType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
+		})
+	}
+	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxSsdVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
 		return err
 	}
 
@@ -169,12 +200,21 @@ type Node struct {
 	rack            string
 }
 
-func (n *Node) localVolumeRatio() float64 {
-	return divide(len(n.selectedVolumes), int(n.info.MaxVolumeCount))
+type CapacityFunc func(*master_pb.DataNodeInfo) int
+
+func capacityByMaxSsdVolumeCount(info *master_pb.DataNodeInfo) int {
+	return int(info.MaxSsdVolumeCount)
+}
+func capacityByMaxVolumeCount(info *master_pb.DataNodeInfo) int {
+	return int(info.MaxVolumeCount)
 }
 
-func (n *Node) localVolumeNextRatio() float64 {
-	return divide(len(n.selectedVolumes)+1, int(n.info.MaxVolumeCount))
+func (n *Node) localVolumeRatio(capacityFunc CapacityFunc) float64 {
+	return divide(len(n.selectedVolumes), capacityFunc(n.info))
+}
+
+func (n *Node) localVolumeNextRatio(capacityFunc CapacityFunc) float64 {
+	return divide(len(n.selectedVolumes)+1, capacityFunc(n.info))
 }
 
 func (n *Node) selectVolumes(fn func(v *master_pb.VolumeInformationMessage) bool) {
@@ -198,11 +238,11 @@ func sortReadOnlyVolumes(volumes []*master_pb.VolumeInformationMessage) {
 	})
 }
 
-func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, sortCandidatesFn func(volumes []*master_pb.VolumeInformationMessage), applyBalancing bool) (err error) {
+func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, capacityFunc CapacityFunc, sortCandidatesFn func(volumes []*master_pb.VolumeInformationMessage), applyBalancing bool) (err error) {
 	selectedVolumeCount, volumeMaxCount := 0, 0
 	for _, dn := range nodes {
 		selectedVolumeCount += len(dn.selectedVolumes)
-		volumeMaxCount += int(dn.info.MaxVolumeCount)
+		volumeMaxCount += capacityFunc(dn.info)
 	}
 
 	idealVolumeRatio := divide(selectedVolumeCount, volumeMaxCount)
@@ -212,7 +252,7 @@ func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*
 	for hasMoved {
 		hasMoved = false
 		sort.Slice(nodes, func(i, j int) bool {
-			return nodes[i].localVolumeRatio() < nodes[j].localVolumeRatio()
+			return nodes[i].localVolumeRatio(capacityFunc) < nodes[j].localVolumeRatio(capacityFunc)
 		})
 
 		fullNode := nodes[len(nodes)-1]
@@ -224,7 +264,7 @@ func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*
 
 		for i := 0; i < len(nodes)-1; i++ {
 			emptyNode := nodes[i]
-			if !(fullNode.localVolumeRatio() > idealVolumeRatio && emptyNode.localVolumeNextRatio() <= idealVolumeRatio) {
+			if !(fullNode.localVolumeRatio(capacityFunc) > idealVolumeRatio && emptyNode.localVolumeNextRatio(capacityFunc) <= idealVolumeRatio) {
 				// no more volume servers with empty slots
 				break
 			}
diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index a82454cd3..59303ec55 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -175,7 +175,7 @@ func moveAwayOneEcVolume(commandEnv *CommandEnv, ecShardInfo *master_pb.VolumeEc
 
 func moveAwayOneNormalVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, vol *master_pb.VolumeInformationMessage, thisNode *Node, otherNodes []*Node, applyChange bool) (hasMoved bool, err error) {
 	sort.Slice(otherNodes, func(i, j int) bool {
-		return otherNodes[i].localVolumeRatio() < otherNodes[j].localVolumeRatio()
+		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount) + otherNodes[i].localVolumeRatio(capacityByMaxSsdVolumeCount) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount) + otherNodes[j].localVolumeRatio(capacityByMaxSsdVolumeCount)
 	})
 
 	for i := 0; i < len(otherNodes); i++ {

From 715b199eeb6fbd3f028b99e42097096fdcac5e09 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 04:14:50 -0800
Subject: [PATCH 004/140] fix tests

---
 weed/topology/topology.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/topology/topology.go b/weed/topology/topology.go
index 62332f805..f5d335be5 100644
--- a/weed/topology/topology.go
+++ b/weed/topology/topology.go
@@ -182,6 +182,9 @@ func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPl
 		return
 	}
 	collection.DeleteVolumeLayout(rp, ttl, volumeType)
+	if len(collection.storageType2VolumeLayout.Items()) == 0 {
+		t.DeleteCollection(collectionName)
+	}
 }
 
 func (t *Topology) RegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {

From 0d2ec832e2ced90371f2c5549b175d5b93becd1a Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 11:59:32 -0800
Subject: [PATCH 005/140] rename from volumeType to diskType

---
 other/java/client/src/main/proto/filer.proto  |   7 +-
 weed/command/benchmark.go                     |   6 +-
 weed/command/filer_copy.go                    |   8 +-
 weed/command/filer_sync.go                    |  16 +-
 weed/command/mount.go                         |   4 +-
 weed/command/mount_std.go                     |   4 +-
 weed/command/upload.go                        |   8 +-
 weed/command/volume.go                        |   8 +-
 weed/filer/entry.go                           |   2 +-
 weed/filer/entry_codec.go                     |   4 +-
 weed/filer/filer_conf.go                      |   2 +-
 weed/filesys/wfs.go                           |   4 +-
 weed/filesys/wfs_write.go                     |   2 +-
 weed/operation/assign_file_id.go              |  10 +-
 weed/operation/submit.go                      |  12 +-
 weed/pb/filer.proto                           |   7 +-
 weed/pb/filer_pb/filer.pb.go                  | 552 ++++++++----------
 weed/pb/master_pb/master.pb.go                |  24 +-
 .../replication/sink/filersink/fetch_write.go |   2 +-
 weed/replication/sink/filersink/filer_sink.go |   8 +-
 weed/server/common.go                         |   2 +-
 weed/server/filer_grpc_server.go              |   8 +-
 weed/server/filer_server_handlers_write.go    |  10 +-
 .../filer_server_handlers_write_autochunk.go  |   2 +-
 .../filer_server_handlers_write_cipher.go     |   2 +-
 weed/server/master_grpc_server_volume.go      |   6 +-
 weed/server/master_server_handlers_admin.go   |   6 +-
 weed/server/volume_server.go                  |   8 +-
 weed/server/webdav_server.go                  |   4 +-
 weed/shell/command_fs_configure.go            |   2 +
 weed/shell/command_volume_balance.go          |   8 +-
 weed/storage/disk_location.go                 |   6 +-
 weed/storage/store.go                         |   6 +-
 weed/storage/volume.go                        |   2 +-
 weed/storage/volume_info.go                   |   6 +-
 weed/storage/volume_type.go                   |  14 +-
 weed/topology/collection.go                   |  14 +-
 weed/topology/data_node.go                    |   6 +-
 weed/topology/topology.go                     |  26 +-
 weed/topology/topology_event_handling.go      |   8 +-
 weed/topology/topology_test.go                |   4 +-
 weed/topology/volume_growth.go                |   2 +-
 weed/topology/volume_layout.go                |   6 +-
 43 files changed, 391 insertions(+), 457 deletions(-)

diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index ba49e420f..fe26cca15 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -358,12 +358,7 @@ message FilerConf {
         string collection = 2;
         string replication = 3;
         string ttl = 4;
-        enum DiskType {
-            NONE = 0;
-            HDD = 1;
-            SSD = 2;
-        }
-        DiskType disk_type = 5;
+        string disk_type = 5;
         bool fsync = 6;
         uint32 volume_growth_count = 7;
     }
diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 7a112d1ec..04f5b82e7 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -35,7 +35,7 @@ type BenchmarkOptions struct {
 	sequentialRead   *bool
 	collection       *string
 	replication      *string
-	volumeType       *string
+	diskType       *string
 	cpuprofile       *string
 	maxCpu           *int
 	grpcDialOption   grpc.DialOption
@@ -63,7 +63,7 @@ func init() {
 	b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
 	b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
 	b.replication = cmdBenchmark.Flag.String("replication", "000", "replication type")
-	b.volumeType = cmdBenchmark.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	b.diskType = cmdBenchmark.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
 	b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	b.fsync = cmdBenchmark.Flag.Bool("fsync", false, "flush data to disk after write")
@@ -236,7 +236,7 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
 			Count:       1,
 			Collection:  *b.collection,
 			Replication: *b.replication,
-			VolumeType: *b.volumeType,
+			DiskType: *b.diskType,
 		}
 		if assignResult, err := operation.Assign(b.masterClient.GetMaster(), b.grpcDialOption, ar); err == nil {
 			fp.Server, fp.Fid, fp.Collection = assignResult.Url, assignResult.Fid, *b.collection
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 1102a8cff..ea7a96047 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -37,7 +37,7 @@ type CopyOptions struct {
 	replication       *string
 	collection        *string
 	ttl               *string
-	volumeType        *string
+	diskType        *string
 	maxMB             *int
 	masterClient      *wdclient.MasterClient
 	concurrenctFiles  *int
@@ -55,7 +55,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.volumeType = cmdCopy.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	copy.diskType = cmdCopy.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
@@ -313,7 +313,7 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 				Replication: *worker.options.replication,
 				Collection:  *worker.options.collection,
 				TtlSec:      worker.options.ttlSec,
-				VolumeType:  *worker.options.volumeType,
+				DiskType:  *worker.options.diskType,
 				Path:        task.destinationUrlPath,
 			}
 
@@ -408,7 +408,7 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 					Replication: *worker.options.replication,
 					Collection:  *worker.options.collection,
 					TtlSec:      worker.options.ttlSec,
-					VolumeType:  *worker.options.volumeType,
+					DiskType:  *worker.options.diskType,
 					Path:        task.destinationUrlPath + fileName,
 				}
 
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index ee3731a99..b6dcd44ee 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -31,8 +31,8 @@ type SyncOptions struct {
 	bCollection     *string
 	aTtlSec         *int
 	bTtlSec         *int
-	aVolumeType     *string
-	bVolumeType     *string
+	aDiskType     *string
+	bDiskType     *string
 	aDebug          *bool
 	bDebug          *bool
 }
@@ -56,8 +56,8 @@ func init() {
 	syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
 	syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
 	syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
-	syncOptions.aVolumeType = cmdFilerSynchronize.Flag.String("a.volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer A")
-	syncOptions.bVolumeType = cmdFilerSynchronize.Flag.String("b.volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer B")
+	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.diskType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer A")
+	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.diskType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer B")
 	syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
 	syncOptions.bDebug = cmdFilerSynchronize.Flag.Bool("b.debug", false, "debug mode to print out filer B received files")
 	syncCpuProfile = cmdFilerSynchronize.Flag.String("cpuprofile", "", "cpu profile output file")
@@ -91,7 +91,7 @@ func runFilerSynchronize(cmd *Command, args []string) bool {
 	go func() {
 		for {
 			err := doSubscribeFilerMetaChanges(grpcDialOption, *syncOptions.filerA, *syncOptions.aPath, *syncOptions.filerB,
-				*syncOptions.bPath, *syncOptions.bReplication, *syncOptions.bCollection, *syncOptions.bTtlSec, *syncOptions.bVolumeType, *syncOptions.bDebug)
+				*syncOptions.bPath, *syncOptions.bReplication, *syncOptions.bCollection, *syncOptions.bTtlSec, *syncOptions.bDiskType, *syncOptions.bDebug)
 			if err != nil {
 				glog.Errorf("sync from %s to %s: %v", *syncOptions.filerA, *syncOptions.filerB, err)
 				time.Sleep(1747 * time.Millisecond)
@@ -103,7 +103,7 @@ func runFilerSynchronize(cmd *Command, args []string) bool {
 		go func() {
 			for {
 				err := doSubscribeFilerMetaChanges(grpcDialOption, *syncOptions.filerB, *syncOptions.bPath, *syncOptions.filerA,
-					*syncOptions.aPath, *syncOptions.aReplication, *syncOptions.aCollection, *syncOptions.aTtlSec, *syncOptions.aVolumeType, *syncOptions.aDebug)
+					*syncOptions.aPath, *syncOptions.aReplication, *syncOptions.aCollection, *syncOptions.aTtlSec, *syncOptions.aDiskType, *syncOptions.aDebug)
 				if err != nil {
 					glog.Errorf("sync from %s to %s: %v", *syncOptions.filerB, *syncOptions.filerA, err)
 					time.Sleep(2147 * time.Millisecond)
@@ -118,7 +118,7 @@ func runFilerSynchronize(cmd *Command, args []string) bool {
 }
 
 func doSubscribeFilerMetaChanges(grpcDialOption grpc.DialOption, sourceFiler, sourcePath, targetFiler, targetPath string,
-	replicationStr, collection string, ttlSec int, volumeType string, debug bool) error {
+	replicationStr, collection string, ttlSec int, diskType string, debug bool) error {
 
 	// read source filer signature
 	sourceFilerSignature, sourceErr := replication.ReadFilerSignature(grpcDialOption, sourceFiler)
@@ -144,7 +144,7 @@ func doSubscribeFilerMetaChanges(grpcDialOption grpc.DialOption, sourceFiler, so
 	filerSource := &source.FilerSource{}
 	filerSource.DoInitialize(pb.ServerToGrpcAddress(sourceFiler), sourcePath)
 	filerSink := &filersink.FilerSink{}
-	filerSink.DoInitialize(pb.ServerToGrpcAddress(targetFiler), targetPath, replicationStr, collection, ttlSec, volumeType, grpcDialOption)
+	filerSink.DoInitialize(pb.ServerToGrpcAddress(targetFiler), targetPath, replicationStr, collection, ttlSec, diskType, grpcDialOption)
 	filerSink.SetSourceFiler(filerSource)
 
 	processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
diff --git a/weed/command/mount.go b/weed/command/mount.go
index 8e9e73315..6a11fe327 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -12,7 +12,7 @@ type MountOptions struct {
 	dirAutoCreate               *bool
 	collection                  *string
 	replication                 *string
-	volumeType                  *string
+	diskType                  *string
 	ttlSec                      *int
 	chunkSizeLimitMB            *int
 	concurrentWriters           *int
@@ -42,7 +42,7 @@ func init() {
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
 	mountOptions.collection = cmdMount.Flag.String("collection", "", "collection to create the files")
 	mountOptions.replication = cmdMount.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
-	mountOptions.volumeType = cmdMount.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	mountOptions.diskType = cmdMount.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	mountOptions.ttlSec = cmdMount.Flag.Int("ttl", 0, "file ttl in seconds")
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
 	mountOptions.concurrentWriters = cmdMount.Flag.Int("concurrentWriters", 0, "limit concurrent goroutine writers if not 0")
diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index 94a145c1b..e3bfba9fb 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -168,7 +168,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		mountRoot = mountRoot[0 : len(mountRoot)-1]
 	}
 
-	volumeType, err := storage.ToVolumeType(*option.volumeType)
+	diskType, err := storage.ToDiskType(*option.diskType)
 	if err != nil {
 		fmt.Printf("failed to parse volume type: %v\n", err)
 		return false
@@ -181,7 +181,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		Collection:                  *option.collection,
 		Replication:                 *option.replication,
 		TtlSec:                      int32(*option.ttlSec),
-		VolumeType:                  volumeType,
+		DiskType:                  diskType,
 		ChunkSizeLimit:              int64(chunkSizeLimitMB) * 1024 * 1024,
 		ConcurrentWriters:           *option.concurrentWriters,
 		CacheDir:                    *option.cacheDir,
diff --git a/weed/command/upload.go b/weed/command/upload.go
index bafca8cee..f491d7f1e 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -23,7 +23,7 @@ type UploadOptions struct {
 	collection   *string
 	dataCenter   *string
 	ttl          *string
-	volumeType   *string
+	diskType   *string
 	maxMB        *int
 	usePublicUrl *bool
 }
@@ -37,7 +37,7 @@ func init() {
 	upload.replication = cmdUpload.Flag.String("replication", "", "replication type")
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
-	upload.volumeType = cmdUpload.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	upload.diskType = cmdUpload.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
 	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 	upload.usePublicUrl = cmdUpload.Flag.Bool("usePublicUrl", false, "upload to public url from volume server")
@@ -83,7 +83,7 @@ func runUpload(cmd *Command, args []string) bool {
 					if e != nil {
 						return e
 					}
-					results, e := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.volumeType, *upload.maxMB, *upload.usePublicUrl)
+					results, e := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
 					bytes, _ := json.Marshal(results)
 					fmt.Println(string(bytes))
 					if e != nil {
@@ -100,7 +100,7 @@ func runUpload(cmd *Command, args []string) bool {
 		if e != nil {
 			fmt.Println(e.Error())
 		}
-		results, _ := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.volumeType, *upload.maxMB, *upload.usePublicUrl)
+		results, _ := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
 		bytes, _ := json.Marshal(results)
 		fmt.Println(string(bytes))
 	}
diff --git a/weed/command/volume.go b/weed/command/volume.go
index 6bfc71f4e..1a079f394 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -49,7 +49,7 @@ type VolumeServerOptions struct {
 	rack                  *string
 	whiteList             []string
 	indexType             *string
-	volumeType            *string
+	diskType            *string
 	fixJpgOrientation     *bool
 	readRedirect          *bool
 	cpuProfile            *string
@@ -77,7 +77,7 @@ func init() {
 	v.dataCenter = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	v.volumeType = cmdVolume.Flag.String("volumeType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	v.diskType = cmdVolume.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
@@ -212,7 +212,7 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 
 	masters := *v.masters
 
-	volumeType, err := storage.ToVolumeType(*v.volumeType)
+	diskType, err := storage.ToDiskType(*v.diskType)
 	if err != nil {
 		glog.Fatalf("failed to parse volume type: %v", err)
 	}
@@ -220,7 +220,7 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 	volumeServer := weed_server.NewVolumeServer(volumeMux, publicVolumeMux,
 		*v.ip, *v.port, *v.publicUrl,
 		v.folders, v.folderMaxLimits, v.minFreeSpacePercents,
-		*v.idxFolder, volumeType,
+		*v.idxFolder, diskType,
 		volumeNeedleMapKind,
 		strings.Split(masters, ","), 5, *v.dataCenter, *v.rack,
 		v.whiteList,
diff --git a/weed/filer/entry.go b/weed/filer/entry.go
index e579b9b21..987ea8cca 100644
--- a/weed/filer/entry.go
+++ b/weed/filer/entry.go
@@ -18,7 +18,7 @@ type Attr struct {
 	Replication   string      // replication
 	Collection    string      // collection name
 	TtlSec        int32       // ttl in seconds
-	VolumeType    string
+	DiskType    string
 	UserName      string
 	GroupNames    []string
 	SymlinkTarget string
diff --git a/weed/filer/entry_codec.go b/weed/filer/entry_codec.go
index 45b391436..cc7353974 100644
--- a/weed/filer/entry_codec.go
+++ b/weed/filer/entry_codec.go
@@ -56,7 +56,7 @@ func EntryAttributeToPb(entry *Entry) *filer_pb.FuseAttributes {
 		Collection:    entry.Attr.Collection,
 		Replication:   entry.Attr.Replication,
 		TtlSec:        entry.Attr.TtlSec,
-		VolumeType:    entry.Attr.VolumeType,
+		DiskType:    entry.Attr.DiskType,
 		UserName:      entry.Attr.UserName,
 		GroupName:     entry.Attr.GroupNames,
 		SymlinkTarget: entry.Attr.SymlinkTarget,
@@ -82,7 +82,7 @@ func PbToEntryAttribute(attr *filer_pb.FuseAttributes) Attr {
 	t.Collection = attr.Collection
 	t.Replication = attr.Replication
 	t.TtlSec = attr.TtlSec
-	t.VolumeType = attr.VolumeType
+	t.DiskType = attr.DiskType
 	t.UserName = attr.UserName
 	t.GroupNames = attr.GroupName
 	t.SymlinkTarget = attr.SymlinkTarget
diff --git a/weed/filer/filer_conf.go b/weed/filer/filer_conf.go
index 18ed37abd..b4f0e5890 100644
--- a/weed/filer/filer_conf.go
+++ b/weed/filer/filer_conf.go
@@ -116,7 +116,7 @@ func mergePathConf(a, b *filer_pb.FilerConf_PathConf) {
 	a.Collection = util.Nvl(b.Collection, a.Collection)
 	a.Replication = util.Nvl(b.Replication, a.Replication)
 	a.Ttl = util.Nvl(b.Ttl, a.Ttl)
-	if b.DiskType != filer_pb.FilerConf_PathConf_NONE {
+	if b.DiskType != "" {
 		a.DiskType = b.DiskType
 	}
 	a.Fsync = b.Fsync || a.Fsync
diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index 1d4b323e2..48893f80a 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -31,7 +31,7 @@ type Option struct {
 	Collection         string
 	Replication        string
 	TtlSec             int32
-	VolumeType         storage.VolumeType
+	DiskType         storage.DiskType
 	ChunkSizeLimit     int64
 	ConcurrentWriters  int
 	CacheDir           string
@@ -178,7 +178,7 @@ func (wfs *WFS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.
 				Collection:  wfs.option.Collection,
 				Replication: wfs.option.Replication,
 				Ttl:         fmt.Sprintf("%ds", wfs.option.TtlSec),
-				VolumeType:  string(wfs.option.VolumeType),
+				DiskType:  string(wfs.option.DiskType),
 			}
 
 			glog.V(4).Infof("reading filer stats: %+v", request)
diff --git a/weed/filesys/wfs_write.go b/weed/filesys/wfs_write.go
index 00a7445c8..903fed810 100644
--- a/weed/filesys/wfs_write.go
+++ b/weed/filesys/wfs_write.go
@@ -26,7 +26,7 @@ func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath) filer.SaveDataAsChunkFun
 				Replication: wfs.option.Replication,
 				Collection:  wfs.option.Collection,
 				TtlSec:      wfs.option.TtlSec,
-				VolumeType:  string(wfs.option.VolumeType),
+				DiskType:  string(wfs.option.DiskType),
 				DataCenter:  wfs.option.DataCenter,
 				Path:        string(fullPath),
 			}
diff --git a/weed/operation/assign_file_id.go b/weed/operation/assign_file_id.go
index 5f77d28ca..bb0b8e6df 100644
--- a/weed/operation/assign_file_id.go
+++ b/weed/operation/assign_file_id.go
@@ -18,7 +18,7 @@ type VolumeAssignRequest struct {
 	Replication         string
 	Collection          string
 	Ttl                 string
-	VolumeType          string
+	DiskType          string
 	DataCenter          string
 	Rack                string
 	DataNode            string
@@ -55,7 +55,7 @@ func Assign(server string, grpcDialOption grpc.DialOption, primaryRequest *Volum
 				Replication:         request.Replication,
 				Collection:          request.Collection,
 				Ttl:                 request.Ttl,
-				VolumeType:          request.VolumeType,
+				DiskType:          request.DiskType,
 				DataCenter:          request.DataCenter,
 				Rack:                request.Rack,
 				DataNode:            request.DataNode,
@@ -107,7 +107,7 @@ func LookupJwt(master string, fileId string) security.EncodedJwt {
 
 type StorageOption struct {
 	Replication       string
-	VolumeType        string
+	DiskType        string
 	Collection        string
 	DataCenter        string
 	Rack              string
@@ -126,7 +126,7 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 		Replication:         so.Replication,
 		Collection:          so.Collection,
 		Ttl:                 so.TtlString(),
-		VolumeType:          so.VolumeType,
+		DiskType:          so.DiskType,
 		DataCenter:          so.DataCenter,
 		Rack:                so.Rack,
 		WritableVolumeCount: so.VolumeGrowthCount,
@@ -137,7 +137,7 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 			Replication:         so.Replication,
 			Collection:          so.Collection,
 			Ttl:                 so.TtlString(),
-			VolumeType:          so.VolumeType,
+			DiskType:          so.DiskType,
 			DataCenter:          "",
 			Rack:                "",
 			WritableVolumeCount: so.VolumeGrowthCount,
diff --git a/weed/operation/submit.go b/weed/operation/submit.go
index 70ab4194a..bcdf9ddce 100644
--- a/weed/operation/submit.go
+++ b/weed/operation/submit.go
@@ -25,7 +25,7 @@ type FilePart struct {
 	Collection  string
 	DataCenter  string
 	Ttl         string
-	VolumeType  string
+	DiskType  string
 	Server      string //this comes from assign result
 	Fid         string //this comes from assign result, but customizable
 	Fsync       bool
@@ -39,7 +39,7 @@ type SubmitResult struct {
 	Error    string `json:"error,omitempty"`
 }
 
-func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart, replication string, collection string, dataCenter string, ttl string, volumeType string, maxMB int, usePublicUrl bool) ([]SubmitResult, error) {
+func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart, replication string, collection string, dataCenter string, ttl string, diskType string, maxMB int, usePublicUrl bool) ([]SubmitResult, error) {
 	results := make([]SubmitResult, len(files))
 	for index, file := range files {
 		results[index].FileName = file.FileName
@@ -50,7 +50,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		Collection:  collection,
 		DataCenter:  dataCenter,
 		Ttl:         ttl,
-		VolumeType:  volumeType,
+		DiskType:  diskType,
 	}
 	ret, err := Assign(master, grpcDialOption, ar)
 	if err != nil {
@@ -72,7 +72,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		file.Collection = collection
 		file.DataCenter = dataCenter
 		file.Ttl = ttl
-		file.VolumeType = volumeType
+		file.DiskType = diskType
 		results[index].Size, err = file.Upload(maxMB, master, usePublicUrl, ret.Auth, grpcDialOption)
 		if err != nil {
 			results[index].Error = err.Error()
@@ -146,7 +146,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 				Replication: fi.Replication,
 				Collection:  fi.Collection,
 				Ttl:         fi.Ttl,
-				VolumeType:  fi.VolumeType,
+				DiskType:  fi.DiskType,
 			}
 			ret, err = Assign(master, grpcDialOption, ar)
 			if err != nil {
@@ -160,7 +160,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 					Replication: fi.Replication,
 					Collection:  fi.Collection,
 					Ttl:         fi.Ttl,
-					VolumeType:  fi.VolumeType,
+					DiskType:  fi.DiskType,
 				}
 				ret, err = Assign(master, grpcDialOption, ar)
 				if err != nil {
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index ba49e420f..fe26cca15 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -358,12 +358,7 @@ message FilerConf {
         string collection = 2;
         string replication = 3;
         string ttl = 4;
-        enum DiskType {
-            NONE = 0;
-            HDD = 1;
-            SSD = 2;
-        }
-        DiskType disk_type = 5;
+        string disk_type = 5;
         bool fsync = 6;
         uint32 volume_growth_count = 7;
     }
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index bf9108a07..671a5188b 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -29,55 +29,6 @@ const (
 // of the legacy proto package is being used.
 const _ = proto.ProtoPackageIsVersion4
 
-type FilerConf_PathConf_DiskType int32
-
-const (
-	FilerConf_PathConf_NONE FilerConf_PathConf_DiskType = 0
-	FilerConf_PathConf_HDD  FilerConf_PathConf_DiskType = 1
-	FilerConf_PathConf_SSD  FilerConf_PathConf_DiskType = 2
-)
-
-// Enum value maps for FilerConf_PathConf_DiskType.
-var (
-	FilerConf_PathConf_DiskType_name = map[int32]string{
-		0: "NONE",
-		1: "HDD",
-		2: "SSD",
-	}
-	FilerConf_PathConf_DiskType_value = map[string]int32{
-		"NONE": 0,
-		"HDD":  1,
-		"SSD":  2,
-	}
-)
-
-func (x FilerConf_PathConf_DiskType) Enum() *FilerConf_PathConf_DiskType {
-	p := new(FilerConf_PathConf_DiskType)
-	*p = x
-	return p
-}
-
-func (x FilerConf_PathConf_DiskType) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (FilerConf_PathConf_DiskType) Descriptor() protoreflect.EnumDescriptor {
-	return file_filer_proto_enumTypes[0].Descriptor()
-}
-
-func (FilerConf_PathConf_DiskType) Type() protoreflect.EnumType {
-	return &file_filer_proto_enumTypes[0]
-}
-
-func (x FilerConf_PathConf_DiskType) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
-// Deprecated: Use FilerConf_PathConf_DiskType.Descriptor instead.
-func (FilerConf_PathConf_DiskType) EnumDescriptor() ([]byte, []int) {
-	return file_filer_proto_rawDescGZIP(), []int{47, 0, 0}
-}
-
 type LookupDirectoryEntryRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -807,7 +758,7 @@ type FuseAttributes struct {
 	GroupName     []string `protobuf:"bytes,12,rep,name=group_name,json=groupName,proto3" json:"group_name,omitempty"` // for hdfs
 	SymlinkTarget string   `protobuf:"bytes,13,opt,name=symlink_target,json=symlinkTarget,proto3" json:"symlink_target,omitempty"`
 	Md5           []byte   `protobuf:"bytes,14,opt,name=md5,proto3" json:"md5,omitempty"`
-	VolumeType    string   `protobuf:"bytes,15,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType    string   `protobuf:"bytes,15,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *FuseAttributes) Reset() {
@@ -940,9 +891,9 @@ func (x *FuseAttributes) GetMd5() []byte {
 	return nil
 }
 
-func (x *FuseAttributes) GetVolumeType() string {
+func (x *FuseAttributes) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
@@ -1547,7 +1498,7 @@ type AssignVolumeRequest struct {
 	DataCenter  string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
 	Path        string `protobuf:"bytes,6,opt,name=path,proto3" json:"path,omitempty"`
 	Rack        string `protobuf:"bytes,7,opt,name=rack,proto3" json:"rack,omitempty"`
-	VolumeType  string `protobuf:"bytes,8,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType  string `protobuf:"bytes,8,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *AssignVolumeRequest) Reset() {
@@ -1631,9 +1582,9 @@ func (x *AssignVolumeRequest) GetRack() string {
 	return ""
 }
 
-func (x *AssignVolumeRequest) GetVolumeType() string {
+func (x *AssignVolumeRequest) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
@@ -2179,7 +2130,7 @@ type StatisticsRequest struct {
 	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	VolumeType  string `protobuf:"bytes,4,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType  string `protobuf:"bytes,4,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *StatisticsRequest) Reset() {
@@ -2235,9 +2186,9 @@ func (x *StatisticsRequest) GetTtl() string {
 	return ""
 }
 
-func (x *StatisticsRequest) GetVolumeType() string {
+func (x *StatisticsRequest) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
@@ -3177,13 +3128,13 @@ type FilerConf_PathConf struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	LocationPrefix    string                      `protobuf:"bytes,1,opt,name=location_prefix,json=locationPrefix,proto3" json:"location_prefix,omitempty"`
-	Collection        string                      `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
-	Replication       string                      `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
-	Ttl               string                      `protobuf:"bytes,4,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	DiskType          FilerConf_PathConf_DiskType `protobuf:"varint,5,opt,name=disk_type,json=diskType,proto3,enum=filer_pb.FilerConf_PathConf_DiskType" json:"disk_type,omitempty"`
-	Fsync             bool                        `protobuf:"varint,6,opt,name=fsync,proto3" json:"fsync,omitempty"`
-	VolumeGrowthCount uint32                      `protobuf:"varint,7,opt,name=volume_growth_count,json=volumeGrowthCount,proto3" json:"volume_growth_count,omitempty"`
+	LocationPrefix    string `protobuf:"bytes,1,opt,name=location_prefix,json=locationPrefix,proto3" json:"location_prefix,omitempty"`
+	Collection        string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Replication       string `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
+	Ttl               string `protobuf:"bytes,4,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	DiskType          string `protobuf:"bytes,5,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
+	Fsync             bool   `protobuf:"varint,6,opt,name=fsync,proto3" json:"fsync,omitempty"`
+	VolumeGrowthCount uint32 `protobuf:"varint,7,opt,name=volume_growth_count,json=volumeGrowthCount,proto3" json:"volume_growth_count,omitempty"`
 }
 
 func (x *FilerConf_PathConf) Reset() {
@@ -3246,11 +3197,11 @@ func (x *FilerConf_PathConf) GetTtl() string {
 	return ""
 }
 
-func (x *FilerConf_PathConf) GetDiskType() FilerConf_PathConf_DiskType {
+func (x *FilerConf_PathConf) GetDiskType() string {
 	if x != nil {
 		return x.DiskType
 	}
-	return FilerConf_PathConf_NONE
+	return ""
 }
 
 func (x *FilerConf_PathConf) GetFsync() bool {
@@ -3644,13 +3595,13 @@ var file_filer_proto_rawDesc = []byte{
 	0x20, 0x01, 0x28, 0x0c, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x22, 0x25, 0x0a, 0x0d, 0x4b,
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+	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x1a, 0xea, 0x01, 0x0a, 0x08, 0x50, 0x61, 0x74, 0x68, 0x43,
 	0x6f, 0x6e, 0x66, 0x12, 0x27, 0x0a, 0x0f, 0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f,
 	0x70, 0x72, 0x65, 0x66, 0x69, 0x78, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0e, 0x6c, 0x6f,
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@@ -3659,125 +3610,120 @@ var file_filer_proto_rawDesc = []byte{
 	0x72, 0x65, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28,
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 }
 
 var (
@@ -3792,129 +3738,126 @@ func file_filer_proto_rawDescGZIP() []byte {
 	return file_filer_proto_rawDescData
 }
 
-var file_filer_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_filer_proto_msgTypes = make([]protoimpl.MessageInfo, 52)
 var file_filer_proto_goTypes = []interface{}{
-	(FilerConf_PathConf_DiskType)(0),      // 0: filer_pb.FilerConf.PathConf.DiskType
-	(*LookupDirectoryEntryRequest)(nil),   // 1: filer_pb.LookupDirectoryEntryRequest
-	(*LookupDirectoryEntryResponse)(nil),  // 2: filer_pb.LookupDirectoryEntryResponse
-	(*ListEntriesRequest)(nil),            // 3: filer_pb.ListEntriesRequest
-	(*ListEntriesResponse)(nil),           // 4: filer_pb.ListEntriesResponse
-	(*Entry)(nil),                         // 5: filer_pb.Entry
-	(*FullEntry)(nil),                     // 6: filer_pb.FullEntry
-	(*EventNotification)(nil),             // 7: filer_pb.EventNotification
-	(*FileChunk)(nil),                     // 8: filer_pb.FileChunk
-	(*FileChunkManifest)(nil),             // 9: filer_pb.FileChunkManifest
-	(*FileId)(nil),                        // 10: filer_pb.FileId
-	(*FuseAttributes)(nil),                // 11: filer_pb.FuseAttributes
-	(*CreateEntryRequest)(nil),            // 12: filer_pb.CreateEntryRequest
-	(*CreateEntryResponse)(nil),           // 13: filer_pb.CreateEntryResponse
-	(*UpdateEntryRequest)(nil),            // 14: filer_pb.UpdateEntryRequest
-	(*UpdateEntryResponse)(nil),           // 15: filer_pb.UpdateEntryResponse
-	(*AppendToEntryRequest)(nil),          // 16: filer_pb.AppendToEntryRequest
-	(*AppendToEntryResponse)(nil),         // 17: filer_pb.AppendToEntryResponse
-	(*DeleteEntryRequest)(nil),            // 18: filer_pb.DeleteEntryRequest
-	(*DeleteEntryResponse)(nil),           // 19: filer_pb.DeleteEntryResponse
-	(*AtomicRenameEntryRequest)(nil),      // 20: filer_pb.AtomicRenameEntryRequest
-	(*AtomicRenameEntryResponse)(nil),     // 21: filer_pb.AtomicRenameEntryResponse
-	(*AssignVolumeRequest)(nil),           // 22: filer_pb.AssignVolumeRequest
-	(*AssignVolumeResponse)(nil),          // 23: filer_pb.AssignVolumeResponse
-	(*LookupVolumeRequest)(nil),           // 24: filer_pb.LookupVolumeRequest
-	(*Locations)(nil),                     // 25: filer_pb.Locations
-	(*Location)(nil),                      // 26: filer_pb.Location
-	(*LookupVolumeResponse)(nil),          // 27: filer_pb.LookupVolumeResponse
-	(*Collection)(nil),                    // 28: filer_pb.Collection
-	(*CollectionListRequest)(nil),         // 29: filer_pb.CollectionListRequest
-	(*CollectionListResponse)(nil),        // 30: filer_pb.CollectionListResponse
-	(*DeleteCollectionRequest)(nil),       // 31: filer_pb.DeleteCollectionRequest
-	(*DeleteCollectionResponse)(nil),      // 32: filer_pb.DeleteCollectionResponse
-	(*StatisticsRequest)(nil),             // 33: filer_pb.StatisticsRequest
-	(*StatisticsResponse)(nil),            // 34: filer_pb.StatisticsResponse
-	(*GetFilerConfigurationRequest)(nil),  // 35: filer_pb.GetFilerConfigurationRequest
-	(*GetFilerConfigurationResponse)(nil), // 36: filer_pb.GetFilerConfigurationResponse
-	(*SubscribeMetadataRequest)(nil),      // 37: filer_pb.SubscribeMetadataRequest
-	(*SubscribeMetadataResponse)(nil),     // 38: filer_pb.SubscribeMetadataResponse
-	(*LogEntry)(nil),                      // 39: filer_pb.LogEntry
-	(*KeepConnectedRequest)(nil),          // 40: filer_pb.KeepConnectedRequest
-	(*KeepConnectedResponse)(nil),         // 41: filer_pb.KeepConnectedResponse
-	(*LocateBrokerRequest)(nil),           // 42: filer_pb.LocateBrokerRequest
-	(*LocateBrokerResponse)(nil),          // 43: filer_pb.LocateBrokerResponse
-	(*KvGetRequest)(nil),                  // 44: filer_pb.KvGetRequest
-	(*KvGetResponse)(nil),                 // 45: filer_pb.KvGetResponse
-	(*KvPutRequest)(nil),                  // 46: filer_pb.KvPutRequest
-	(*KvPutResponse)(nil),                 // 47: filer_pb.KvPutResponse
-	(*FilerConf)(nil),                     // 48: filer_pb.FilerConf
-	nil,                                   // 49: filer_pb.Entry.ExtendedEntry
-	nil,                                   // 50: filer_pb.LookupVolumeResponse.LocationsMapEntry
-	(*LocateBrokerResponse_Resource)(nil), // 51: filer_pb.LocateBrokerResponse.Resource
-	(*FilerConf_PathConf)(nil),            // 52: filer_pb.FilerConf.PathConf
+	(*LookupDirectoryEntryRequest)(nil),   // 0: filer_pb.LookupDirectoryEntryRequest
+	(*LookupDirectoryEntryResponse)(nil),  // 1: filer_pb.LookupDirectoryEntryResponse
+	(*ListEntriesRequest)(nil),            // 2: filer_pb.ListEntriesRequest
+	(*ListEntriesResponse)(nil),           // 3: filer_pb.ListEntriesResponse
+	(*Entry)(nil),                         // 4: filer_pb.Entry
+	(*FullEntry)(nil),                     // 5: filer_pb.FullEntry
+	(*EventNotification)(nil),             // 6: filer_pb.EventNotification
+	(*FileChunk)(nil),                     // 7: filer_pb.FileChunk
+	(*FileChunkManifest)(nil),             // 8: filer_pb.FileChunkManifest
+	(*FileId)(nil),                        // 9: filer_pb.FileId
+	(*FuseAttributes)(nil),                // 10: filer_pb.FuseAttributes
+	(*CreateEntryRequest)(nil),            // 11: filer_pb.CreateEntryRequest
+	(*CreateEntryResponse)(nil),           // 12: filer_pb.CreateEntryResponse
+	(*UpdateEntryRequest)(nil),            // 13: filer_pb.UpdateEntryRequest
+	(*UpdateEntryResponse)(nil),           // 14: filer_pb.UpdateEntryResponse
+	(*AppendToEntryRequest)(nil),          // 15: filer_pb.AppendToEntryRequest
+	(*AppendToEntryResponse)(nil),         // 16: filer_pb.AppendToEntryResponse
+	(*DeleteEntryRequest)(nil),            // 17: filer_pb.DeleteEntryRequest
+	(*DeleteEntryResponse)(nil),           // 18: filer_pb.DeleteEntryResponse
+	(*AtomicRenameEntryRequest)(nil),      // 19: filer_pb.AtomicRenameEntryRequest
+	(*AtomicRenameEntryResponse)(nil),     // 20: filer_pb.AtomicRenameEntryResponse
+	(*AssignVolumeRequest)(nil),           // 21: filer_pb.AssignVolumeRequest
+	(*AssignVolumeResponse)(nil),          // 22: filer_pb.AssignVolumeResponse
+	(*LookupVolumeRequest)(nil),           // 23: filer_pb.LookupVolumeRequest
+	(*Locations)(nil),                     // 24: filer_pb.Locations
+	(*Location)(nil),                      // 25: filer_pb.Location
+	(*LookupVolumeResponse)(nil),          // 26: filer_pb.LookupVolumeResponse
+	(*Collection)(nil),                    // 27: filer_pb.Collection
+	(*CollectionListRequest)(nil),         // 28: filer_pb.CollectionListRequest
+	(*CollectionListResponse)(nil),        // 29: filer_pb.CollectionListResponse
+	(*DeleteCollectionRequest)(nil),       // 30: filer_pb.DeleteCollectionRequest
+	(*DeleteCollectionResponse)(nil),      // 31: filer_pb.DeleteCollectionResponse
+	(*StatisticsRequest)(nil),             // 32: filer_pb.StatisticsRequest
+	(*StatisticsResponse)(nil),            // 33: filer_pb.StatisticsResponse
+	(*GetFilerConfigurationRequest)(nil),  // 34: filer_pb.GetFilerConfigurationRequest
+	(*GetFilerConfigurationResponse)(nil), // 35: filer_pb.GetFilerConfigurationResponse
+	(*SubscribeMetadataRequest)(nil),      // 36: filer_pb.SubscribeMetadataRequest
+	(*SubscribeMetadataResponse)(nil),     // 37: filer_pb.SubscribeMetadataResponse
+	(*LogEntry)(nil),                      // 38: filer_pb.LogEntry
+	(*KeepConnectedRequest)(nil),          // 39: filer_pb.KeepConnectedRequest
+	(*KeepConnectedResponse)(nil),         // 40: filer_pb.KeepConnectedResponse
+	(*LocateBrokerRequest)(nil),           // 41: filer_pb.LocateBrokerRequest
+	(*LocateBrokerResponse)(nil),          // 42: filer_pb.LocateBrokerResponse
+	(*KvGetRequest)(nil),                  // 43: filer_pb.KvGetRequest
+	(*KvGetResponse)(nil),                 // 44: filer_pb.KvGetResponse
+	(*KvPutRequest)(nil),                  // 45: filer_pb.KvPutRequest
+	(*KvPutResponse)(nil),                 // 46: filer_pb.KvPutResponse
+	(*FilerConf)(nil),                     // 47: filer_pb.FilerConf
+	nil,                                   // 48: filer_pb.Entry.ExtendedEntry
+	nil,                                   // 49: filer_pb.LookupVolumeResponse.LocationsMapEntry
+	(*LocateBrokerResponse_Resource)(nil), // 50: filer_pb.LocateBrokerResponse.Resource
+	(*FilerConf_PathConf)(nil),            // 51: filer_pb.FilerConf.PathConf
 }
 var file_filer_proto_depIdxs = []int32{
-	5,  // 0: filer_pb.LookupDirectoryEntryResponse.entry:type_name -> filer_pb.Entry
-	5,  // 1: filer_pb.ListEntriesResponse.entry:type_name -> filer_pb.Entry
-	8,  // 2: filer_pb.Entry.chunks:type_name -> filer_pb.FileChunk
-	11, // 3: filer_pb.Entry.attributes:type_name -> filer_pb.FuseAttributes
-	49, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
-	5,  // 5: filer_pb.FullEntry.entry:type_name -> filer_pb.Entry
-	5,  // 6: filer_pb.EventNotification.old_entry:type_name -> filer_pb.Entry
-	5,  // 7: filer_pb.EventNotification.new_entry:type_name -> filer_pb.Entry
-	10, // 8: filer_pb.FileChunk.fid:type_name -> filer_pb.FileId
-	10, // 9: filer_pb.FileChunk.source_fid:type_name -> filer_pb.FileId
-	8,  // 10: filer_pb.FileChunkManifest.chunks:type_name -> filer_pb.FileChunk
-	5,  // 11: filer_pb.CreateEntryRequest.entry:type_name -> filer_pb.Entry
-	5,  // 12: filer_pb.UpdateEntryRequest.entry:type_name -> filer_pb.Entry
-	8,  // 13: filer_pb.AppendToEntryRequest.chunks:type_name -> filer_pb.FileChunk
-	26, // 14: filer_pb.Locations.locations:type_name -> filer_pb.Location
-	50, // 15: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
-	28, // 16: filer_pb.CollectionListResponse.collections:type_name -> filer_pb.Collection
-	7,  // 17: filer_pb.SubscribeMetadataResponse.event_notification:type_name -> filer_pb.EventNotification
-	51, // 18: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
-	52, // 19: filer_pb.FilerConf.locations:type_name -> filer_pb.FilerConf.PathConf
-	25, // 20: filer_pb.LookupVolumeResponse.LocationsMapEntry.value:type_name -> filer_pb.Locations
-	0,  // 21: filer_pb.FilerConf.PathConf.disk_type:type_name -> filer_pb.FilerConf.PathConf.DiskType
-	1,  // 22: filer_pb.SeaweedFiler.LookupDirectoryEntry:input_type -> filer_pb.LookupDirectoryEntryRequest
-	3,  // 23: filer_pb.SeaweedFiler.ListEntries:input_type -> filer_pb.ListEntriesRequest
-	12, // 24: filer_pb.SeaweedFiler.CreateEntry:input_type -> filer_pb.CreateEntryRequest
-	14, // 25: filer_pb.SeaweedFiler.UpdateEntry:input_type -> filer_pb.UpdateEntryRequest
-	16, // 26: filer_pb.SeaweedFiler.AppendToEntry:input_type -> filer_pb.AppendToEntryRequest
-	18, // 27: filer_pb.SeaweedFiler.DeleteEntry:input_type -> filer_pb.DeleteEntryRequest
-	20, // 28: filer_pb.SeaweedFiler.AtomicRenameEntry:input_type -> filer_pb.AtomicRenameEntryRequest
-	22, // 29: filer_pb.SeaweedFiler.AssignVolume:input_type -> filer_pb.AssignVolumeRequest
-	24, // 30: filer_pb.SeaweedFiler.LookupVolume:input_type -> filer_pb.LookupVolumeRequest
-	29, // 31: filer_pb.SeaweedFiler.CollectionList:input_type -> filer_pb.CollectionListRequest
-	31, // 32: filer_pb.SeaweedFiler.DeleteCollection:input_type -> filer_pb.DeleteCollectionRequest
-	33, // 33: filer_pb.SeaweedFiler.Statistics:input_type -> filer_pb.StatisticsRequest
-	35, // 34: filer_pb.SeaweedFiler.GetFilerConfiguration:input_type -> filer_pb.GetFilerConfigurationRequest
-	37, // 35: filer_pb.SeaweedFiler.SubscribeMetadata:input_type -> filer_pb.SubscribeMetadataRequest
-	37, // 36: filer_pb.SeaweedFiler.SubscribeLocalMetadata:input_type -> filer_pb.SubscribeMetadataRequest
-	40, // 37: filer_pb.SeaweedFiler.KeepConnected:input_type -> filer_pb.KeepConnectedRequest
-	42, // 38: filer_pb.SeaweedFiler.LocateBroker:input_type -> filer_pb.LocateBrokerRequest
-	44, // 39: filer_pb.SeaweedFiler.KvGet:input_type -> filer_pb.KvGetRequest
-	46, // 40: filer_pb.SeaweedFiler.KvPut:input_type -> filer_pb.KvPutRequest
-	2,  // 41: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
-	4,  // 42: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
-	13, // 43: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
-	15, // 44: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
-	17, // 45: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
-	19, // 46: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
-	21, // 47: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
-	23, // 48: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
-	27, // 49: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
-	30, // 50: filer_pb.SeaweedFiler.CollectionList:output_type -> filer_pb.CollectionListResponse
-	32, // 51: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
-	34, // 52: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
-	36, // 53: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
-	38, // 54: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
-	38, // 55: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
-	41, // 56: filer_pb.SeaweedFiler.KeepConnected:output_type -> filer_pb.KeepConnectedResponse
-	43, // 57: filer_pb.SeaweedFiler.LocateBroker:output_type -> filer_pb.LocateBrokerResponse
-	45, // 58: filer_pb.SeaweedFiler.KvGet:output_type -> filer_pb.KvGetResponse
-	47, // 59: filer_pb.SeaweedFiler.KvPut:output_type -> filer_pb.KvPutResponse
-	41, // [41:60] is the sub-list for method output_type
-	22, // [22:41] is the sub-list for method input_type
-	22, // [22:22] is the sub-list for extension type_name
-	22, // [22:22] is the sub-list for extension extendee
-	0,  // [0:22] is the sub-list for field type_name
+	4,  // 0: filer_pb.LookupDirectoryEntryResponse.entry:type_name -> filer_pb.Entry
+	4,  // 1: filer_pb.ListEntriesResponse.entry:type_name -> filer_pb.Entry
+	7,  // 2: filer_pb.Entry.chunks:type_name -> filer_pb.FileChunk
+	10, // 3: filer_pb.Entry.attributes:type_name -> filer_pb.FuseAttributes
+	48, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
+	4,  // 5: filer_pb.FullEntry.entry:type_name -> filer_pb.Entry
+	4,  // 6: filer_pb.EventNotification.old_entry:type_name -> filer_pb.Entry
+	4,  // 7: filer_pb.EventNotification.new_entry:type_name -> filer_pb.Entry
+	9,  // 8: filer_pb.FileChunk.fid:type_name -> filer_pb.FileId
+	9,  // 9: filer_pb.FileChunk.source_fid:type_name -> filer_pb.FileId
+	7,  // 10: filer_pb.FileChunkManifest.chunks:type_name -> filer_pb.FileChunk
+	4,  // 11: filer_pb.CreateEntryRequest.entry:type_name -> filer_pb.Entry
+	4,  // 12: filer_pb.UpdateEntryRequest.entry:type_name -> filer_pb.Entry
+	7,  // 13: filer_pb.AppendToEntryRequest.chunks:type_name -> filer_pb.FileChunk
+	25, // 14: filer_pb.Locations.locations:type_name -> filer_pb.Location
+	49, // 15: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
+	27, // 16: filer_pb.CollectionListResponse.collections:type_name -> filer_pb.Collection
+	6,  // 17: filer_pb.SubscribeMetadataResponse.event_notification:type_name -> filer_pb.EventNotification
+	50, // 18: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
+	51, // 19: filer_pb.FilerConf.locations:type_name -> filer_pb.FilerConf.PathConf
+	24, // 20: filer_pb.LookupVolumeResponse.LocationsMapEntry.value:type_name -> filer_pb.Locations
+	0,  // 21: filer_pb.SeaweedFiler.LookupDirectoryEntry:input_type -> filer_pb.LookupDirectoryEntryRequest
+	2,  // 22: filer_pb.SeaweedFiler.ListEntries:input_type -> filer_pb.ListEntriesRequest
+	11, // 23: filer_pb.SeaweedFiler.CreateEntry:input_type -> filer_pb.CreateEntryRequest
+	13, // 24: filer_pb.SeaweedFiler.UpdateEntry:input_type -> filer_pb.UpdateEntryRequest
+	15, // 25: filer_pb.SeaweedFiler.AppendToEntry:input_type -> filer_pb.AppendToEntryRequest
+	17, // 26: filer_pb.SeaweedFiler.DeleteEntry:input_type -> filer_pb.DeleteEntryRequest
+	19, // 27: filer_pb.SeaweedFiler.AtomicRenameEntry:input_type -> filer_pb.AtomicRenameEntryRequest
+	21, // 28: filer_pb.SeaweedFiler.AssignVolume:input_type -> filer_pb.AssignVolumeRequest
+	23, // 29: filer_pb.SeaweedFiler.LookupVolume:input_type -> filer_pb.LookupVolumeRequest
+	28, // 30: filer_pb.SeaweedFiler.CollectionList:input_type -> filer_pb.CollectionListRequest
+	30, // 31: filer_pb.SeaweedFiler.DeleteCollection:input_type -> filer_pb.DeleteCollectionRequest
+	32, // 32: filer_pb.SeaweedFiler.Statistics:input_type -> filer_pb.StatisticsRequest
+	34, // 33: filer_pb.SeaweedFiler.GetFilerConfiguration:input_type -> filer_pb.GetFilerConfigurationRequest
+	36, // 34: filer_pb.SeaweedFiler.SubscribeMetadata:input_type -> filer_pb.SubscribeMetadataRequest
+	36, // 35: filer_pb.SeaweedFiler.SubscribeLocalMetadata:input_type -> filer_pb.SubscribeMetadataRequest
+	39, // 36: filer_pb.SeaweedFiler.KeepConnected:input_type -> filer_pb.KeepConnectedRequest
+	41, // 37: filer_pb.SeaweedFiler.LocateBroker:input_type -> filer_pb.LocateBrokerRequest
+	43, // 38: filer_pb.SeaweedFiler.KvGet:input_type -> filer_pb.KvGetRequest
+	45, // 39: filer_pb.SeaweedFiler.KvPut:input_type -> filer_pb.KvPutRequest
+	1,  // 40: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
+	3,  // 41: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
+	12, // 42: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
+	14, // 43: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
+	16, // 44: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
+	18, // 45: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
+	20, // 46: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
+	22, // 47: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
+	26, // 48: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
+	29, // 49: filer_pb.SeaweedFiler.CollectionList:output_type -> filer_pb.CollectionListResponse
+	31, // 50: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
+	33, // 51: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
+	35, // 52: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
+	37, // 53: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	37, // 54: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	40, // 55: filer_pb.SeaweedFiler.KeepConnected:output_type -> filer_pb.KeepConnectedResponse
+	42, // 56: filer_pb.SeaweedFiler.LocateBroker:output_type -> filer_pb.LocateBrokerResponse
+	44, // 57: filer_pb.SeaweedFiler.KvGet:output_type -> filer_pb.KvGetResponse
+	46, // 58: filer_pb.SeaweedFiler.KvPut:output_type -> filer_pb.KvPutResponse
+	40, // [40:59] is the sub-list for method output_type
+	21, // [21:40] is the sub-list for method input_type
+	21, // [21:21] is the sub-list for extension type_name
+	21, // [21:21] is the sub-list for extension extendee
+	0,  // [0:21] is the sub-list for field type_name
 }
 
 func init() { file_filer_proto_init() }
@@ -4529,14 +4472,13 @@ func file_filer_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_filer_proto_rawDesc,
-			NumEnums:      1,
+			NumEnums:      0,
 			NumMessages:   52,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
 		GoTypes:           file_filer_proto_goTypes,
 		DependencyIndexes: file_filer_proto_depIdxs,
-		EnumInfos:         file_filer_proto_enumTypes,
 		MessageInfos:      file_filer_proto_msgTypes,
 	}.Build()
 	File_filer_proto = out.File
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 799e2fe83..74fb00f6d 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -305,7 +305,7 @@ type VolumeInformationMessage struct {
 	ModifiedAtSecond  int64  `protobuf:"varint,12,opt,name=modified_at_second,json=modifiedAtSecond,proto3" json:"modified_at_second,omitempty"`
 	RemoteStorageName string `protobuf:"bytes,13,opt,name=remote_storage_name,json=remoteStorageName,proto3" json:"remote_storage_name,omitempty"`
 	RemoteStorageKey  string `protobuf:"bytes,14,opt,name=remote_storage_key,json=remoteStorageKey,proto3" json:"remote_storage_key,omitempty"`
-	VolumeType        string `protobuf:"bytes,15,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType        string `protobuf:"bytes,15,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *VolumeInformationMessage) Reset() {
@@ -438,9 +438,9 @@ func (x *VolumeInformationMessage) GetRemoteStorageKey() string {
 	return ""
 }
 
-func (x *VolumeInformationMessage) GetVolumeType() string {
+func (x *VolumeInformationMessage) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
@@ -455,7 +455,7 @@ type VolumeShortInformationMessage struct {
 	ReplicaPlacement uint32 `protobuf:"varint,8,opt,name=replica_placement,json=replicaPlacement,proto3" json:"replica_placement,omitempty"`
 	Version          uint32 `protobuf:"varint,9,opt,name=version,proto3" json:"version,omitempty"`
 	Ttl              uint32 `protobuf:"varint,10,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	VolumeType       string `protobuf:"bytes,15,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType       string `protobuf:"bytes,15,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *VolumeShortInformationMessage) Reset() {
@@ -525,9 +525,9 @@ func (x *VolumeShortInformationMessage) GetTtl() uint32 {
 	return 0
 }
 
-func (x *VolumeShortInformationMessage) GetVolumeType() string {
+func (x *VolumeShortInformationMessage) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
@@ -1056,7 +1056,7 @@ type AssignRequest struct {
 	DataNode            string `protobuf:"bytes,7,opt,name=data_node,json=dataNode,proto3" json:"data_node,omitempty"`
 	MemoryMapMaxSizeMb  uint32 `protobuf:"varint,8,opt,name=memory_map_max_size_mb,json=memoryMapMaxSizeMb,proto3" json:"memory_map_max_size_mb,omitempty"`
 	WritableVolumeCount uint32 `protobuf:"varint,9,opt,name=Writable_volume_count,json=WritableVolumeCount,proto3" json:"Writable_volume_count,omitempty"`
-	VolumeType          string `protobuf:"bytes,10,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType          string `protobuf:"bytes,10,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *AssignRequest) Reset() {
@@ -1154,9 +1154,9 @@ func (x *AssignRequest) GetWritableVolumeCount() uint32 {
 	return 0
 }
 
-func (x *AssignRequest) GetVolumeType() string {
+func (x *AssignRequest) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
@@ -1256,7 +1256,7 @@ type StatisticsRequest struct {
 	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	VolumeType  string `protobuf:"bytes,4,opt,name=volume_type,json=volumeType,proto3" json:"volume_type,omitempty"`
+	DiskType  string `protobuf:"bytes,4,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
 }
 
 func (x *StatisticsRequest) Reset() {
@@ -1312,9 +1312,9 @@ func (x *StatisticsRequest) GetTtl() string {
 	return ""
 }
 
-func (x *StatisticsRequest) GetVolumeType() string {
+func (x *StatisticsRequest) GetDiskType() string {
 	if x != nil {
-		return x.VolumeType
+		return x.DiskType
 	}
 	return ""
 }
diff --git a/weed/replication/sink/filersink/fetch_write.go b/weed/replication/sink/filersink/fetch_write.go
index ac9ff789a..bdd2ba585 100644
--- a/weed/replication/sink/filersink/fetch_write.go
+++ b/weed/replication/sink/filersink/fetch_write.go
@@ -77,7 +77,7 @@ func (fs *FilerSink) fetchAndWrite(sourceChunk *filer_pb.FileChunk, path string)
 			Collection:  fs.collection,
 			TtlSec:      fs.ttlSec,
 			DataCenter:  fs.dataCenter,
-			VolumeType:  fs.volumeType,
+			DiskType:  fs.diskType,
 			Path:        path,
 		}
 
diff --git a/weed/replication/sink/filersink/filer_sink.go b/weed/replication/sink/filersink/filer_sink.go
index a60a31b4a..ae257e446 100644
--- a/weed/replication/sink/filersink/filer_sink.go
+++ b/weed/replication/sink/filersink/filer_sink.go
@@ -23,7 +23,7 @@ type FilerSink struct {
 	replication    string
 	collection     string
 	ttlSec         int32
-	volumeType     string
+	diskType     string
 	dataCenter     string
 	grpcDialOption grpc.DialOption
 }
@@ -47,7 +47,7 @@ func (fs *FilerSink) Initialize(configuration util.Configuration, prefix string)
 		configuration.GetString(prefix+"replication"),
 		configuration.GetString(prefix+"collection"),
 		configuration.GetInt(prefix+"ttlSec"),
-		configuration.GetString(prefix+"volumeType"),
+		configuration.GetString(prefix+"diskType"),
 		security.LoadClientTLS(util.GetViper(), "grpc.client"))
 }
 
@@ -56,13 +56,13 @@ func (fs *FilerSink) SetSourceFiler(s *source.FilerSource) {
 }
 
 func (fs *FilerSink) DoInitialize(grpcAddress string, dir string,
-	replication string, collection string, ttlSec int, volumeType string, grpcDialOption grpc.DialOption) (err error) {
+	replication string, collection string, ttlSec int, diskType string, grpcDialOption grpc.DialOption) (err error) {
 	fs.grpcAddress = grpcAddress
 	fs.dir = dir
 	fs.replication = replication
 	fs.collection = collection
 	fs.ttlSec = int32(ttlSec)
-	fs.volumeType = volumeType
+	fs.diskType = diskType
 	fs.grpcDialOption = grpcDialOption
 	return nil
 }
diff --git a/weed/server/common.go b/weed/server/common.go
index 852fffb5e..187f45723 100644
--- a/weed/server/common.go
+++ b/weed/server/common.go
@@ -131,7 +131,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
 		Replication: r.FormValue("replication"),
 		Collection:  r.FormValue("collection"),
 		Ttl:         r.FormValue("ttl"),
-		VolumeType:  r.FormValue("volumeType"),
+		DiskType:  r.FormValue("diskType"),
 	}
 	assignResult, ae := operation.Assign(masterUrl, grpcDialOption, ar)
 	if ae != nil {
diff --git a/weed/server/filer_grpc_server.go b/weed/server/filer_grpc_server.go
index bc6d0ceb9..e8a57261d 100644
--- a/weed/server/filer_grpc_server.go
+++ b/weed/server/filer_grpc_server.go
@@ -265,7 +265,7 @@ func (fs *FilerServer) cleanupChunks(fullpath string, existingEntry *filer.Entry
 			newEntry.Attributes.Collection,
 			newEntry.Attributes.Replication,
 			newEntry.Attributes.TtlSec,
-			newEntry.Attributes.VolumeType,
+			newEntry.Attributes.DiskType,
 			"",
 			"",
 		)
@@ -309,7 +309,7 @@ func (fs *FilerServer) AppendToEntry(ctx context.Context, req *filer_pb.AppendTo
 	}
 
 	entry.Chunks = append(entry.Chunks, req.Chunks...)
-	so := fs.detectStorageOption(string(fullpath), entry.Collection, entry.Replication, entry.TtlSec, entry.VolumeType, "", "")
+	so := fs.detectStorageOption(string(fullpath), entry.Collection, entry.Replication, entry.TtlSec, entry.DiskType, "", "")
 	entry.Chunks, err = filer.MaybeManifestize(fs.saveAsChunk(so), entry.Chunks)
 	if err != nil {
 		// not good, but should be ok
@@ -335,7 +335,7 @@ func (fs *FilerServer) DeleteEntry(ctx context.Context, req *filer_pb.DeleteEntr
 
 func (fs *FilerServer) AssignVolume(ctx context.Context, req *filer_pb.AssignVolumeRequest) (resp *filer_pb.AssignVolumeResponse, err error) {
 
-	so := fs.detectStorageOption(req.Path, req.Collection, req.Replication, req.TtlSec, req.VolumeType, req.DataCenter, req.Rack)
+	so := fs.detectStorageOption(req.Path, req.Collection, req.Replication, req.TtlSec, req.DiskType, req.DataCenter, req.Rack)
 
 	assignRequest, altRequest := so.ToAssignRequests(int(req.Count))
 
@@ -405,7 +405,7 @@ func (fs *FilerServer) Statistics(ctx context.Context, req *filer_pb.StatisticsR
 			Replication: req.Replication,
 			Collection:  req.Collection,
 			Ttl:         req.Ttl,
-			VolumeType:  req.VolumeType,
+			DiskType:  req.DiskType,
 		})
 		if grpcErr != nil {
 			return grpcErr
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index e6fc31d8e..c8a05b1d4 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -61,7 +61,7 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
 		query.Get("collection"),
 		query.Get("replication"),
 		query.Get("ttl"),
-		query.Get("volumeType"),
+		query.Get("diskType"),
 		query.Get("dataCenter"),
 		query.Get("rack"),
 	)
@@ -105,7 +105,7 @@ func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusNoContent)
 }
 
-func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication string, ttlSeconds int32, volumeType string, dataCenter, rack string) *operation.StorageOption {
+func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication string, ttlSeconds int32, diskType string, dataCenter, rack string) *operation.StorageOption {
 	collection := util.Nvl(qCollection, fs.option.Collection)
 	replication := util.Nvl(qReplication, fs.option.DefaultReplication)
 
@@ -135,18 +135,18 @@ func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication
 		DataCenter:        util.Nvl(dataCenter, fs.option.DataCenter),
 		Rack:              util.Nvl(rack, fs.option.Rack),
 		TtlSeconds:        ttlSeconds,
-		VolumeType:        volumeType,
+		DiskType:        diskType,
 		Fsync:             fsync || rule.Fsync,
 		VolumeGrowthCount: rule.VolumeGrowthCount,
 	}
 }
 
-func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, volumeType string, dataCenter, rack string) *operation.StorageOption {
+func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, diskType string, dataCenter, rack string) *operation.StorageOption {
 
 	ttl, err := needle.ReadTTL(qTtl)
 	if err != nil {
 		glog.Errorf("fail to parse ttl %s: %v", qTtl, err)
 	}
 
-	return fs.detectStorageOption(requestURI, qCollection, qReplication, int32(ttl.Minutes())*60, volumeType, dataCenter, rack)
+	return fs.detectStorageOption(requestURI, qCollection, qReplication, int32(ttl.Minutes())*60, diskType, dataCenter, rack)
 }
diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
index 9f88bd202..e52e20a8a 100644
--- a/weed/server/filer_server_handlers_write_autochunk.go
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -159,7 +159,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 			Replication: so.Replication,
 			Collection:  so.Collection,
 			TtlSec:      so.TtlSeconds,
-			VolumeType:  so.VolumeType,
+			DiskType:  so.DiskType,
 			Mime:        contentType,
 			Md5:         md5bytes,
 			FileSize:    uint64(chunkOffset),
diff --git a/weed/server/filer_server_handlers_write_cipher.go b/weed/server/filer_server_handlers_write_cipher.go
index c5e8a74d8..f9310bdd2 100644
--- a/weed/server/filer_server_handlers_write_cipher.go
+++ b/weed/server/filer_server_handlers_write_cipher.go
@@ -68,7 +68,7 @@ func (fs *FilerServer) encrypt(ctx context.Context, w http.ResponseWriter, r *ht
 			Replication: so.Replication,
 			Collection:  so.Collection,
 			TtlSec:      so.TtlSeconds,
-			VolumeType:  so.VolumeType,
+			DiskType:  so.DiskType,
 			Mime:        pu.MimeType,
 			Md5:         util.Base64Md5ToBytes(pu.ContentMd5),
 		},
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index e84d9b386..0b41bce86 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -61,7 +61,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 	if err != nil {
 		return nil, err
 	}
-	volumeType, err := storage.ToVolumeType(req.VolumeType)
+	diskType, err := storage.ToDiskType(req.DiskType)
 	if err != nil {
 		return nil, err
 	}
@@ -70,7 +70,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 		Collection:         req.Collection,
 		ReplicaPlacement:   replicaPlacement,
 		Ttl:                ttl,
-		VolumeType:         volumeType,
+		DiskType:         diskType,
 		Prealloacte:        ms.preallocateSize,
 		DataCenter:         req.DataCenter,
 		Rack:               req.Rack,
@@ -123,7 +123,7 @@ func (ms *MasterServer) Statistics(ctx context.Context, req *master_pb.Statistic
 		return nil, err
 	}
 
-	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, storage.VolumeType(req.VolumeType))
+	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, storage.DiskType(req.DiskType))
 	stats := volumeLayout.Stats()
 
 	totalSize := (ms.Topo.GetMaxVolumeCount() + ms.Topo.GetMaxSsdVolumeCount()) * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 001ff9cdc..e44fb0415 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -137,7 +137,7 @@ func (ms *MasterServer) submitFromMasterServerHandler(w http.ResponseWriter, r *
 }
 
 func (ms *MasterServer) HasWritableVolume(option *topology.VolumeGrowOption) bool {
-	vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.VolumeType)
+	vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.DiskType)
 	return vl.GetActiveVolumeCount(option) > 0
 }
 
@@ -158,7 +158,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 	if err != nil {
 		return nil, err
 	}
-	volumeType, err := storage.ToVolumeType(r.FormValue("volumeType"))
+	diskType, err := storage.ToDiskType(r.FormValue("diskType"))
 	if err != nil {
 		return nil, err
 	}
@@ -174,7 +174,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 		Collection:         r.FormValue("collection"),
 		ReplicaPlacement:   replicaPlacement,
 		Ttl:                ttl,
-		VolumeType:         volumeType,
+		DiskType:         diskType,
 		Prealloacte:        preallocate,
 		DataCenter:         r.FormValue("dataCenter"),
 		Rack:               r.FormValue("rack"),
diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index 16f4198e8..53a4c3548 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -20,7 +20,7 @@ type VolumeServer struct {
 	pulseSeconds    int
 	dataCenter      string
 	rack            string
-	VolumeType      storage.VolumeType
+	DiskType      storage.DiskType
 	store           *storage.Store
 	guard           *security.Guard
 	grpcDialOption  grpc.DialOption
@@ -39,7 +39,7 @@ type VolumeServer struct {
 func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	port int, publicUrl string,
 	folders []string, maxCounts []int, minFreeSpacePercents []float32,
-	idxFolder string, volumeType storage.VolumeType,
+	idxFolder string, diskType storage.DiskType,
 	needleMapKind storage.NeedleMapType,
 	masterNodes []string, pulseSeconds int,
 	dataCenter string, rack string,
@@ -64,7 +64,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 		pulseSeconds:            pulseSeconds,
 		dataCenter:              dataCenter,
 		rack:                    rack,
-		VolumeType:              volumeType,
+		DiskType:              diskType,
 		needleMapKind:           needleMapKind,
 		FixJpgOrientation:       fixJpgOrientation,
 		ReadRedirect:            readRedirect,
@@ -78,7 +78,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 
 	vs.checkWithMaster()
 
-	vs.store = storage.NewStore(vs.grpcDialOption, port, ip, publicUrl, folders, maxCounts, minFreeSpacePercents, idxFolder, vs.needleMapKind, vs.VolumeType)
+	vs.store = storage.NewStore(vs.grpcDialOption, port, ip, publicUrl, folders, maxCounts, minFreeSpacePercents, idxFolder, vs.needleMapKind, vs.DiskType)
 	vs.guard = security.NewGuard(whiteList, signingKey, expiresAfterSec, readSigningKey, readExpiresAfterSec)
 
 	handleStaticResources(adminMux)
diff --git a/weed/server/webdav_server.go b/weed/server/webdav_server.go
index 329560d3f..04b7e0519 100644
--- a/weed/server/webdav_server.go
+++ b/weed/server/webdav_server.go
@@ -33,7 +33,7 @@ type WebDavOption struct {
 	BucketsPath      string
 	GrpcDialOption   grpc.DialOption
 	Collection       string
-	VolumeType       string
+	DiskType       string
 	Uid              uint32
 	Gid              uint32
 	Cipher           bool
@@ -379,7 +379,7 @@ func (f *WebDavFile) saveDataAsChunk(reader io.Reader, name string, offset int64
 			Count:       1,
 			Replication: "",
 			Collection:  f.fs.option.Collection,
-			VolumeType:  f.fs.option.VolumeType,
+			DiskType:  f.fs.option.DiskType,
 			Path:        name,
 		}
 
diff --git a/weed/shell/command_fs_configure.go b/weed/shell/command_fs_configure.go
index 497ef4f9e..d97f8cc15 100644
--- a/weed/shell/command_fs_configure.go
+++ b/weed/shell/command_fs_configure.go
@@ -52,6 +52,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 	collection := fsConfigureCommand.String("collection", "", "assign writes to this collection")
 	replication := fsConfigureCommand.String("replication", "", "assign writes with this replication")
 	ttl := fsConfigureCommand.String("ttl", "", "assign writes with this ttl")
+	diskType := fsConfigureCommand.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
 	volumeGrowthCount := fsConfigureCommand.Int("volumeGrowthCount", 0, "the number of physical volumes to add if no writable volumes")
 	isDelete := fsConfigureCommand.Bool("delete", false, "delete the configuration by locationPrefix")
@@ -81,6 +82,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 			Replication:       *replication,
 			Ttl:               *ttl,
 			Fsync:             *fsync,
+			DiskType:          *diskType,
 			VolumeGrowthCount: uint32(*volumeGrowthCount),
 		}
 
diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index 4a9247cb5..d30de25fc 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -120,7 +120,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.VolumeType == string(storage.HardDriveType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
+			return v.DiskType == string(storage.HardDriveType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
 		})
 	}
 	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
@@ -135,7 +135,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.VolumeType == string(storage.HardDriveType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
+			return v.DiskType == string(storage.HardDriveType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
 		})
 	}
 	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
@@ -150,7 +150,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.VolumeType == string(storage.SsdType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
+			return v.DiskType == string(storage.SsdType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
 		})
 	}
 	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxSsdVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
@@ -165,7 +165,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.VolumeType == string(storage.SsdType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
+			return v.DiskType == string(storage.SsdType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
 		})
 	}
 	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxSsdVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index ef224cc4a..88a52ccd8 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -19,7 +19,7 @@ import (
 type DiskLocation struct {
 	Directory              string
 	IdxDirectory           string
-	VolumeType             VolumeType
+	DiskType             DiskType
 	MaxVolumeCount         int
 	OriginalMaxVolumeCount int
 	MinFreeSpacePercent    float32
@@ -33,7 +33,7 @@ type DiskLocation struct {
 	isDiskSpaceLow bool
 }
 
-func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32, idxDir string, volumeType VolumeType) *DiskLocation {
+func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32, idxDir string, diskType DiskType) *DiskLocation {
 	dir = util.ResolvePath(dir)
 	if idxDir == "" {
 		idxDir = dir
@@ -43,7 +43,7 @@ func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32
 	location := &DiskLocation{
 		Directory:              dir,
 		IdxDirectory:           idxDir,
-		VolumeType:             volumeType,
+		DiskType:             diskType,
 		MaxVolumeCount:         maxVolumeCount,
 		OriginalMaxVolumeCount: maxVolumeCount,
 		MinFreeSpacePercent:    minFreeSpacePercent,
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 1a1bc2e67..1b1c771df 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -52,11 +52,11 @@ func (s *Store) String() (str string) {
 	return
 }
 
-func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType, volumeType VolumeType) (s *Store) {
+func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType, diskType DiskType) (s *Store) {
 	s = &Store{grpcDialOption: grpcDialOption, Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapType: needleMapKind}
 	s.Locations = make([]*DiskLocation, 0)
 	for i := 0; i < len(dirnames); i++ {
-		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder, volumeType)
+		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder, diskType)
 		location.loadExistingVolumes(needleMapKind)
 		s.Locations = append(s.Locations, location)
 		stats.VolumeServerMaxVolumeCounter.Add(float64(maxVolumeCounts[i]))
@@ -209,7 +209,7 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 	collectionVolumeReadOnlyCount := make(map[string]map[string]uint8)
 	for _, location := range s.Locations {
 		var deleteVids []needle.VolumeId
-		switch location.VolumeType {
+		switch location.DiskType {
 		case SsdType:
 			maxSsdVolumeCount = maxSsdVolumeCount + location.MaxVolumeCount
 		case HardDriveType:
diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index fdfb68c43..ebc1bff3e 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -262,7 +262,7 @@ func (v *Volume) ToVolumeInformationMessage() (types.NeedleId, *master_pb.Volume
 		Ttl:              v.Ttl.ToUint32(),
 		CompactRevision:  uint32(v.SuperBlock.CompactionRevision),
 		ModifiedAtSecond: modTime.Unix(),
-		VolumeType:       string(v.location.VolumeType),
+		DiskType:       string(v.location.DiskType),
 	}
 
 	volumeInfo.RemoteStorageName, volumeInfo.RemoteStorageKey = v.RemoteStorageNameKey()
diff --git a/weed/storage/volume_info.go b/weed/storage/volume_info.go
index 5aaf42735..24577618e 100644
--- a/weed/storage/volume_info.go
+++ b/weed/storage/volume_info.go
@@ -14,7 +14,7 @@ type VolumeInfo struct {
 	Size              uint64
 	ReplicaPlacement  *super_block.ReplicaPlacement
 	Ttl               *needle.TTL
-	VolumeType        string
+	DiskType        string
 	Collection        string
 	Version           needle.Version
 	FileCount         int
@@ -41,7 +41,7 @@ func NewVolumeInfo(m *master_pb.VolumeInformationMessage) (vi VolumeInfo, err er
 		ModifiedAtSecond:  m.ModifiedAtSecond,
 		RemoteStorageName: m.RemoteStorageName,
 		RemoteStorageKey:  m.RemoteStorageKey,
-		VolumeType:        m.VolumeType,
+		DiskType:        m.DiskType,
 	}
 	rp, e := super_block.NewReplicaPlacementFromByte(byte(m.ReplicaPlacement))
 	if e != nil {
@@ -92,7 +92,7 @@ func (vi VolumeInfo) ToVolumeInformationMessage() *master_pb.VolumeInformationMe
 		ModifiedAtSecond:  vi.ModifiedAtSecond,
 		RemoteStorageName: vi.RemoteStorageName,
 		RemoteStorageKey:  vi.RemoteStorageKey,
-		VolumeType:        vi.VolumeType,
+		DiskType:        vi.DiskType,
 	}
 }
 
diff --git a/weed/storage/volume_type.go b/weed/storage/volume_type.go
index 5504b4386..05cd6b2c3 100644
--- a/weed/storage/volume_type.go
+++ b/weed/storage/volume_type.go
@@ -2,22 +2,22 @@ package storage
 
 import "fmt"
 
-type VolumeType string
+type DiskType string
 
 const (
-	HardDriveType VolumeType = ""
+	HardDriveType DiskType = ""
 	SsdType                  = "ssd"
 )
 
-func ToVolumeType(vt string) (volumeType VolumeType, err error) {
-	volumeType = HardDriveType
+func ToDiskType(vt string) (diskType DiskType, err error) {
+	diskType = HardDriveType
 	switch vt {
 	case "", "hdd":
-		volumeType = HardDriveType
+		diskType = HardDriveType
 	case "ssd":
-		volumeType = SsdType
+		diskType = SsdType
 	default:
-		err = fmt.Errorf("parse VolumeType %s: expecting hdd or ssd\n", vt)
+		err = fmt.Errorf("parse DiskType %s: expecting hdd or ssd\n", vt)
 	}
 	return
 }
diff --git a/weed/topology/collection.go b/weed/topology/collection.go
index d2bdeab62..0c5dc5db7 100644
--- a/weed/topology/collection.go
+++ b/weed/topology/collection.go
@@ -30,27 +30,27 @@ func (c *Collection) String() string {
 	return fmt.Sprintf("Name:%s, volumeSizeLimit:%d, storageType2VolumeLayout:%v", c.Name, c.volumeSizeLimit, c.storageType2VolumeLayout)
 }
 
-func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) *VolumeLayout {
+func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) *VolumeLayout {
 	keyString := rp.String()
 	if ttl != nil {
 		keyString += ttl.String()
 	}
-	if volumeType != storage.HardDriveType {
-		keyString += string(volumeType)
+	if diskType != storage.HardDriveType {
+		keyString += string(diskType)
 	}
 	vl := c.storageType2VolumeLayout.Get(keyString, func() interface{} {
-		return NewVolumeLayout(rp, ttl, volumeType, c.volumeSizeLimit, c.replicationAsMin)
+		return NewVolumeLayout(rp, ttl, diskType, c.volumeSizeLimit, c.replicationAsMin)
 	})
 	return vl.(*VolumeLayout)
 }
 
-func (c *Collection) DeleteVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) {
+func (c *Collection) DeleteVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) {
 	keyString := rp.String()
 	if ttl != nil {
 		keyString += ttl.String()
 	}
-	if volumeType != storage.HardDriveType {
-		keyString += string(volumeType)
+	if diskType != storage.HardDriveType {
+		keyString += string(diskType)
 	}
 	c.storageType2VolumeLayout.Delete(keyString)
 }
diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 0ea234202..400e91455 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -50,7 +50,7 @@ func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO
 func (dn *DataNode) doAddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
 	if oldV, ok := dn.volumes[v.Id]; !ok {
 		dn.volumes[v.Id] = v
-		if v.VolumeType == storage.SsdType {
+		if v.DiskType == storage.SsdType {
 			dn.UpAdjustSsdVolumeCountDelta(1)
 		} else {
 			dn.UpAdjustVolumeCountDelta(1)
@@ -93,7 +93,7 @@ func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolume
 			glog.V(0).Infoln("Deleting volume id:", vid)
 			delete(dn.volumes, vid)
 			deletedVolumes = append(deletedVolumes, v)
-			if v.VolumeType == storage.SsdType {
+			if v.DiskType == storage.SsdType {
 				dn.UpAdjustSsdVolumeCountDelta(-1)
 			} else {
 				dn.UpAdjustVolumeCountDelta(-1)
@@ -124,7 +124,7 @@ func (dn *DataNode) DeltaUpdateVolumes(newVolumes, deletedVolumes []storage.Volu
 
 	for _, v := range deletedVolumes {
 		delete(dn.volumes, v.Id)
-		if v.VolumeType == storage.SsdType {
+		if v.DiskType == storage.SsdType {
 			dn.UpAdjustSsdVolumeCountDelta(-1)
 		} else {
 			dn.UpAdjustVolumeCountDelta(-1)
diff --git a/weed/topology/topology.go b/weed/topology/topology.go
index f5d335be5..486394f7a 100644
--- a/weed/topology/topology.go
+++ b/weed/topology/topology.go
@@ -121,12 +121,12 @@ func (t *Topology) NextVolumeId() (needle.VolumeId, error) {
 }
 
 func (t *Topology) HasWritableVolume(option *VolumeGrowOption) bool {
-	vl := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.VolumeType)
+	vl := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.DiskType)
 	return vl.GetActiveVolumeCount(option) > 0
 }
 
 func (t *Topology) PickForWrite(count uint64, option *VolumeGrowOption) (string, uint64, *DataNode, error) {
-	vid, count, datanodes, err := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.VolumeType).PickForWrite(count, option)
+	vid, count, datanodes, err := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.DiskType).PickForWrite(count, option)
 	if err != nil {
 		return "", 0, nil, fmt.Errorf("failed to find writable volumes for collection:%s replication:%s ttl:%s error: %v", option.Collection, option.ReplicaPlacement.String(), option.Ttl.String(), err)
 	}
@@ -137,10 +137,10 @@ func (t *Topology) PickForWrite(count uint64, option *VolumeGrowOption) (string,
 	return needle.NewFileId(*vid, fileId, rand.Uint32()).String(), count, datanodes.Head(), nil
 }
 
-func (t *Topology) GetVolumeLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) *VolumeLayout {
+func (t *Topology) GetVolumeLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) *VolumeLayout {
 	return t.collectionMap.Get(collectionName, func() interface{} {
 		return NewCollection(collectionName, t.volumeSizeLimit, t.replicationAsMin)
-	}).(*Collection).GetOrCreateVolumeLayout(rp, ttl, volumeType)
+	}).(*Collection).GetOrCreateVolumeLayout(rp, ttl, diskType)
 }
 
 func (t *Topology) ListCollections(includeNormalVolumes, includeEcVolumes bool) (ret []string) {
@@ -176,30 +176,30 @@ func (t *Topology) DeleteCollection(collectionName string) {
 	t.collectionMap.Delete(collectionName)
 }
 
-func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType) {
+func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) {
 	collection, found := t.FindCollection(collectionName)
 	if !found {
 		return
 	}
-	collection.DeleteVolumeLayout(rp, ttl, volumeType)
+	collection.DeleteVolumeLayout(rp, ttl, diskType)
 	if len(collection.storageType2VolumeLayout.Items()) == 0 {
 		t.DeleteCollection(collectionName)
 	}
 }
 
 func (t *Topology) RegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
-	volumeType, _ := storage.ToVolumeType(v.VolumeType)
-	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
+	diskType, _ := storage.ToDiskType(v.DiskType)
+	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	vl.RegisterVolume(&v, dn)
 	vl.EnsureCorrectWritables(&v)
 }
 func (t *Topology) UnRegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
 	glog.Infof("removing volume info: %+v", v)
-	volumeType, _ := storage.ToVolumeType(v.VolumeType)
-	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
+	diskType, _ := storage.ToDiskType(v.DiskType)
+	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	volumeLayout.UnRegisterVolume(&v, dn)
 	if volumeLayout.isEmpty() {
-		t.DeleteLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
+		t.DeleteLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	}
 }
 
@@ -235,8 +235,8 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 		t.UnRegisterVolumeLayout(v, dn)
 	}
 	for _, v := range changedVolumes {
-		volumeType, _ := storage.ToVolumeType(v.VolumeType)
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
+		diskType, _ := storage.ToDiskType(v.DiskType)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 		vl.EnsureCorrectWritables(&v)
 	}
 	return
diff --git a/weed/topology/topology_event_handling.go b/weed/topology/topology_event_handling.go
index 076900069..5b9facc14 100644
--- a/weed/topology/topology_event_handling.go
+++ b/weed/topology/topology_event_handling.go
@@ -37,8 +37,8 @@ func (t *Topology) StartRefreshWritableVolumes(grpcDialOption grpc.DialOption, g
 	}()
 }
 func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
-	volumeType, _ := storage.ToVolumeType(volumeInfo.VolumeType)
-	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, volumeType)
+	diskType, _ := storage.ToDiskType(volumeInfo.DiskType)
+	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, diskType)
 	if !vl.SetVolumeCapacityFull(volumeInfo.Id) {
 		return false
 	}
@@ -56,8 +56,8 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 	for _, v := range dn.GetVolumes() {
 		glog.V(0).Infoln("Removing Volume", v.Id, "from the dead volume server", dn.Id())
-		volumeType, _ := storage.ToVolumeType(v.VolumeType)
-		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, volumeType)
+		diskType, _ := storage.ToDiskType(v.DiskType)
+		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 		vl.SetVolumeUnavailable(dn, v.Id)
 	}
 	dn.UpAdjustVolumeCountDelta(-dn.GetVolumeCount())
diff --git a/weed/topology/topology_test.go b/weed/topology/topology_test.go
index 07dc22681..92dcb9a22 100644
--- a/weed/topology/topology_test.go
+++ b/weed/topology/topology_test.go
@@ -60,7 +60,7 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 				ReplicaPlacement: uint32(0),
 				Version:          uint32(needle.CurrentVersion),
 				Ttl:              0,
-				VolumeType:       "ssd",
+				DiskType:       "ssd",
 			}
 			volumeMessages = append(volumeMessages, volumeMessage)
 		}
@@ -168,7 +168,7 @@ func TestAddRemoveVolume(t *testing.T) {
 		Id:               needle.VolumeId(1),
 		Size:             100,
 		Collection:       "xcollection",
-		VolumeType:       "ssd",
+		DiskType:       "ssd",
 		FileCount:        123,
 		DeleteCount:      23,
 		DeletedByteCount: 45,
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index 7a0f3beb6..b2f1fe3d5 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -27,7 +27,7 @@ type VolumeGrowOption struct {
 	Collection         string
 	ReplicaPlacement   *super_block.ReplicaPlacement
 	Ttl                *needle.TTL
-	VolumeType         storage.VolumeType
+	DiskType         storage.DiskType
 	Prealloacte        int64
 	DataCenter         string
 	Rack               string
diff --git a/weed/topology/volume_layout.go b/weed/topology/volume_layout.go
index 3d391cd84..ba30eca49 100644
--- a/weed/topology/volume_layout.go
+++ b/weed/topology/volume_layout.go
@@ -103,7 +103,7 @@ func (v *volumesBinaryState) copyState(list *VolumeLocationList) copyState {
 type VolumeLayout struct {
 	rp               *super_block.ReplicaPlacement
 	ttl              *needle.TTL
-	volumeType       storage.VolumeType
+	diskType       storage.DiskType
 	vid2location     map[needle.VolumeId]*VolumeLocationList
 	writables        []needle.VolumeId   // transient array of writable volume id
 	readonlyVolumes  *volumesBinaryState // readonly volumes
@@ -119,11 +119,11 @@ type VolumeLayoutStats struct {
 	FileCount uint64
 }
 
-func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, volumeType storage.VolumeType, volumeSizeLimit uint64, replicationAsMin bool) *VolumeLayout {
+func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType, volumeSizeLimit uint64, replicationAsMin bool) *VolumeLayout {
 	return &VolumeLayout{
 		rp:               rp,
 		ttl:              ttl,
-		volumeType:       volumeType,
+		diskType:       diskType,
 		vid2location:     make(map[needle.VolumeId]*VolumeLocationList),
 		writables:        *new([]needle.VolumeId),
 		readonlyVolumes:  NewVolumesBinaryState(readOnlyState, rp, ExistCopies()),

From 51eadaf2b6ac064277ed82ff98023429c047b5a3 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 12:05:31 -0800
Subject: [PATCH 006/140] rename parameter name to "disk"

---
 weed/command/benchmark.go                     | 2 +-
 weed/command/mount.go                         | 2 +-
 weed/command/server.go                        | 1 +
 weed/replication/sink/filersink/filer_sink.go | 2 +-
 weed/server/filer_server_handlers_write.go    | 2 +-
 5 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 04f5b82e7..9a66083f1 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -63,7 +63,7 @@ func init() {
 	b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
 	b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
 	b.replication = cmdBenchmark.Flag.String("replication", "000", "replication type")
-	b.diskType = cmdBenchmark.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
 	b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	b.fsync = cmdBenchmark.Flag.Bool("fsync", false, "flush data to disk after write")
diff --git a/weed/command/mount.go b/weed/command/mount.go
index 6a11fe327..dc0bb5488 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -42,7 +42,7 @@ func init() {
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
 	mountOptions.collection = cmdMount.Flag.String("collection", "", "collection to create the files")
 	mountOptions.replication = cmdMount.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
-	mountOptions.diskType = cmdMount.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	mountOptions.ttlSec = cmdMount.Flag.Int("ttl", 0, "file ttl in seconds")
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
 	mountOptions.concurrentWriters = cmdMount.Flag.Int("concurrentWriters", 0, "limit concurrent goroutine writers if not 0")
diff --git a/weed/command/server.go b/weed/command/server.go
index 7e63f8e8a..2d880c599 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -99,6 +99,7 @@ func init() {
 	serverOptions.v.port = cmdServer.Flag.Int("volume.port", 8080, "volume server http listen port")
 	serverOptions.v.publicPort = cmdServer.Flag.Int("volume.port.public", 0, "volume server public port")
 	serverOptions.v.indexType = cmdServer.Flag.String("volume.index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
+	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	serverOptions.v.fixJpgOrientation = cmdServer.Flag.Bool("volume.images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	serverOptions.v.readRedirect = cmdServer.Flag.Bool("volume.read.redirect", true, "Redirect moved or non-local volumes.")
 	serverOptions.v.compactionMBPerSecond = cmdServer.Flag.Int("volume.compactionMBps", 0, "limit compaction speed in mega bytes per second")
diff --git a/weed/replication/sink/filersink/filer_sink.go b/weed/replication/sink/filersink/filer_sink.go
index ae257e446..579883d62 100644
--- a/weed/replication/sink/filersink/filer_sink.go
+++ b/weed/replication/sink/filersink/filer_sink.go
@@ -47,7 +47,7 @@ func (fs *FilerSink) Initialize(configuration util.Configuration, prefix string)
 		configuration.GetString(prefix+"replication"),
 		configuration.GetString(prefix+"collection"),
 		configuration.GetInt(prefix+"ttlSec"),
-		configuration.GetString(prefix+"diskType"),
+		configuration.GetString(prefix+"disk"),
 		security.LoadClientTLS(util.GetViper(), "grpc.client"))
 }
 
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index c8a05b1d4..5d3f2be62 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -61,7 +61,7 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
 		query.Get("collection"),
 		query.Get("replication"),
 		query.Get("ttl"),
-		query.Get("diskType"),
+		query.Get("disk"),
 		query.Get("dataCenter"),
 		query.Get("rack"),
 	)

From 8baba93fce4e3f6e0400a28ff01609f9358449de Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 12:06:21 -0800
Subject: [PATCH 007/140] rename parameter name to "disk"

---
 weed/command/filer_copy.go                  | 2 +-
 weed/command/filer_sync.go                  | 4 ++--
 weed/command/upload.go                      | 2 +-
 weed/command/volume.go                      | 2 +-
 weed/server/common.go                       | 2 +-
 weed/server/master_server_handlers_admin.go | 2 +-
 weed/shell/command_fs_configure.go          | 2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index ea7a96047..cc356de88 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -55,7 +55,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.diskType = cmdCopy.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index b6dcd44ee..07a4f8ffb 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -56,8 +56,8 @@ func init() {
 	syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
 	syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
 	syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
-	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.diskType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer A")
-	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.diskType", "", "[hdd|ssd] choose between hard drive or solid state drive on filer B")
+	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd] choose between hard drive or solid state drive on filer A")
+	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd] choose between hard drive or solid state drive on filer B")
 	syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
 	syncOptions.bDebug = cmdFilerSynchronize.Flag.Bool("b.debug", false, "debug mode to print out filer B received files")
 	syncCpuProfile = cmdFilerSynchronize.Flag.String("cpuprofile", "", "cpu profile output file")
diff --git a/weed/command/upload.go b/weed/command/upload.go
index f491d7f1e..8ffc0c2b8 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -37,7 +37,7 @@ func init() {
 	upload.replication = cmdUpload.Flag.String("replication", "", "replication type")
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
-	upload.diskType = cmdUpload.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
 	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 	upload.usePublicUrl = cmdUpload.Flag.Bool("usePublicUrl", false, "upload to public url from volume server")
diff --git a/weed/command/volume.go b/weed/command/volume.go
index 1a079f394..3c3699732 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -77,7 +77,7 @@ func init() {
 	v.dataCenter = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	v.diskType = cmdVolume.Flag.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
diff --git a/weed/server/common.go b/weed/server/common.go
index 187f45723..545703095 100644
--- a/weed/server/common.go
+++ b/weed/server/common.go
@@ -131,7 +131,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
 		Replication: r.FormValue("replication"),
 		Collection:  r.FormValue("collection"),
 		Ttl:         r.FormValue("ttl"),
-		DiskType:  r.FormValue("diskType"),
+		DiskType:  r.FormValue("disk"),
 	}
 	assignResult, ae := operation.Assign(masterUrl, grpcDialOption, ar)
 	if ae != nil {
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index e44fb0415..ad4e4422d 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -158,7 +158,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 	if err != nil {
 		return nil, err
 	}
-	diskType, err := storage.ToDiskType(r.FormValue("diskType"))
+	diskType, err := storage.ToDiskType(r.FormValue("disk"))
 	if err != nil {
 		return nil, err
 	}
diff --git a/weed/shell/command_fs_configure.go b/weed/shell/command_fs_configure.go
index d97f8cc15..a1e8ca581 100644
--- a/weed/shell/command_fs_configure.go
+++ b/weed/shell/command_fs_configure.go
@@ -52,7 +52,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 	collection := fsConfigureCommand.String("collection", "", "assign writes to this collection")
 	replication := fsConfigureCommand.String("replication", "", "assign writes with this replication")
 	ttl := fsConfigureCommand.String("ttl", "", "assign writes with this ttl")
-	diskType := fsConfigureCommand.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
 	fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
 	volumeGrowthCount := fsConfigureCommand.Int("volumeGrowthCount", 0, "the number of physical volumes to add if no writable volumes")
 	isDelete := fsConfigureCommand.Bool("delete", false, "delete the configuration by locationPrefix")

From ac4d4a65affab189d9a390b96e0bae0256d3161a Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 12:34:58 -0800
Subject: [PATCH 008/140] Update Makefile

---
 weed/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/Makefile b/weed/Makefile
index 33886215a..12b8e8173 100644
--- a/weed/Makefile
+++ b/weed/Makefile
@@ -32,4 +32,4 @@ debug_webdav:
 
 debug_s3:
 	go build -gcflags="all=-N -l"
-	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 s3
\ No newline at end of file
+	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 s3

From a9db24cd052ae4b17773a6bb77b703536bb80039 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 19:44:57 -0800
Subject: [PATCH 009/140] master allocate volumes if ssd type runs out

---
 weed/server/master_grpc_server_volume.go    |  2 +-
 weed/server/master_server_handlers.go       |  2 +-
 weed/server/master_server_handlers_admin.go |  2 +-
 weed/topology/node.go                       | 11 +++++++++++
 4 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index 0b41bce86..debb21b94 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -79,7 +79,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 	}
 
 	if !ms.Topo.HasWritableVolume(option) {
-		if ms.Topo.FreeSpace() <= 0 {
+		if ms.Topo.AvailableSpaceFor(option) <= 0 {
 			return nil, fmt.Errorf("No free volumes left!")
 		}
 		ms.vgLock.Lock()
diff --git a/weed/server/master_server_handlers.go b/weed/server/master_server_handlers.go
index ebcb7efd2..dc3df2348 100644
--- a/weed/server/master_server_handlers.go
+++ b/weed/server/master_server_handlers.go
@@ -112,7 +112,7 @@ func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request)
 	}
 
 	if !ms.Topo.HasWritableVolume(option) {
-		if ms.Topo.FreeSpace() <= 0 {
+		if ms.Topo.AvailableSpaceFor(option) <= 0 {
 			writeJsonQuiet(w, r, http.StatusNotFound, operation.AssignResult{Error: "No free volumes left!"})
 			return
 		}
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index ad4e4422d..1f340cb11 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -76,7 +76,7 @@ func (ms *MasterServer) volumeGrowHandler(w http.ResponseWriter, r *http.Request
 	}
 
 	if count, err = strconv.Atoi(r.FormValue("count")); err == nil {
-		if ms.Topo.FreeSpace() < int64(count*option.ReplicaPlacement.GetCopyCount()) {
+		if ms.Topo.AvailableSpaceFor(option) < int64(count*option.ReplicaPlacement.GetCopyCount()) {
 			err = fmt.Errorf("only %d volumes left, not enough for %d", ms.Topo.FreeSpace(), count*option.ReplicaPlacement.GetCopyCount())
 		} else {
 			count, err = ms.vg.GrowByCountAndType(ms.grpcDialOption, count, option, ms.Topo)
diff --git a/weed/topology/node.go b/weed/topology/node.go
index c916857c0..8f525021f 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -2,6 +2,7 @@ package topology
 
 import (
 	"errors"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"math/rand"
 	"strings"
 	"sync"
@@ -148,6 +149,16 @@ func (n *NodeImpl) String() string {
 func (n *NodeImpl) Id() NodeId {
 	return n.id
 }
+func (n *NodeImpl) AvailableSpaceFor(option *VolumeGrowOption) int64 {
+	freeVolumeSlotCount := n.maxVolumeCount + n.remoteVolumeCount - n.volumeCount
+	if option.DiskType == storage.SsdType {
+		freeVolumeSlotCount = n.maxSsdVolumeCount - n.ssdVolumeCount
+	}
+	if n.ecShardCount > 0 {
+		freeVolumeSlotCount = freeVolumeSlotCount - n.ecShardCount/erasure_coding.DataShardsCount - 1
+	}
+	return freeVolumeSlotCount
+}
 func (n *NodeImpl) FreeSpace() int64 {
 	freeVolumeSlotCount := n.maxVolumeCount + n.maxSsdVolumeCount + n.remoteVolumeCount - n.volumeCount - n.ssdVolumeCount
 	if n.ecShardCount > 0 {

From 7c52a3594219fa0957e39a32917cffd0ea479f72 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 22:29:52 -0800
Subject: [PATCH 010/140] refactor

---
 weed/command/volume.go       | 4 ++--
 weed/server/volume_server.go | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/weed/command/volume.go b/weed/command/volume.go
index 3c3699732..02d8eb50c 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -219,8 +219,8 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 
 	volumeServer := weed_server.NewVolumeServer(volumeMux, publicVolumeMux,
 		*v.ip, *v.port, *v.publicUrl,
-		v.folders, v.folderMaxLimits, v.minFreeSpacePercents,
-		*v.idxFolder, diskType,
+		v.folders, v.folderMaxLimits, v.minFreeSpacePercents, diskType,
+		*v.idxFolder,
 		volumeNeedleMapKind,
 		strings.Split(masters, ","), 5, *v.dataCenter, *v.rack,
 		v.whiteList,
diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index 53a4c3548..f88c84184 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -38,8 +38,8 @@ type VolumeServer struct {
 
 func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	port int, publicUrl string,
-	folders []string, maxCounts []int, minFreeSpacePercents []float32,
-	idxFolder string, diskType storage.DiskType,
+	folders []string, maxCounts []int, minFreeSpacePercents []float32, diskType storage.DiskType,
+	idxFolder string,
 	needleMapKind storage.NeedleMapType,
 	masterNodes []string, pulseSeconds int,
 	dataCenter string, rack string,

From f6a419c26caf6356df1a099c5a900b158807b5a4 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 22:49:56 -0800
Subject: [PATCH 011/140] disk type configurable for each folder

---
 weed/command/volume.go       | 26 ++++++++++++++++++++------
 weed/server/volume_server.go |  6 ++----
 weed/storage/store.go        |  4 ++--
 3 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/weed/command/volume.go b/weed/command/volume.go
index 02d8eb50c..b90dc5967 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -169,6 +169,25 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 		glog.Fatalf("%d directories by -dir, but only %d minFreeSpacePercent is set by -minFreeSpacePercent", len(v.folders), len(v.minFreeSpacePercents))
 	}
 
+	// set disk types
+	var diskTypes []storage.DiskType
+	diskTypeStrings := strings.Split(*v.diskType, ",")
+	for _, diskTypeString := range diskTypeStrings {
+		if diskType, err := storage.ToDiskType(diskTypeString); err == nil {
+			diskTypes = append(diskTypes, diskType)
+		} else {
+			glog.Fatalf("failed to parse volume type: %v", err)
+		}
+	}
+	if len(diskTypes) == 1 && len(v.folders) > 1 {
+		for i := 0; i < len(v.folders)-1; i++ {
+			diskTypes = append(diskTypes, diskTypes[0])
+		}
+	}
+	if len(v.folders) != len(diskTypes) {
+		glog.Fatalf("%d directories by -dir, but only %d disk types is set by -disk", len(v.folders), len(diskTypes))
+	}
+
 	// security related white list configuration
 	if volumeWhiteListOption != "" {
 		v.whiteList = strings.Split(volumeWhiteListOption, ",")
@@ -212,14 +231,9 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 
 	masters := *v.masters
 
-	diskType, err := storage.ToDiskType(*v.diskType)
-	if err != nil {
-		glog.Fatalf("failed to parse volume type: %v", err)
-	}
-
 	volumeServer := weed_server.NewVolumeServer(volumeMux, publicVolumeMux,
 		*v.ip, *v.port, *v.publicUrl,
-		v.folders, v.folderMaxLimits, v.minFreeSpacePercents, diskType,
+		v.folders, v.folderMaxLimits, v.minFreeSpacePercents, diskTypes,
 		*v.idxFolder,
 		volumeNeedleMapKind,
 		strings.Split(masters, ","), 5, *v.dataCenter, *v.rack,
diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index f88c84184..7c731763b 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -20,7 +20,6 @@ type VolumeServer struct {
 	pulseSeconds    int
 	dataCenter      string
 	rack            string
-	DiskType      storage.DiskType
 	store           *storage.Store
 	guard           *security.Guard
 	grpcDialOption  grpc.DialOption
@@ -38,7 +37,7 @@ type VolumeServer struct {
 
 func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	port int, publicUrl string,
-	folders []string, maxCounts []int, minFreeSpacePercents []float32, diskType storage.DiskType,
+	folders []string, maxCounts []int, minFreeSpacePercents []float32, diskTypes []storage.DiskType,
 	idxFolder string,
 	needleMapKind storage.NeedleMapType,
 	masterNodes []string, pulseSeconds int,
@@ -64,7 +63,6 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 		pulseSeconds:            pulseSeconds,
 		dataCenter:              dataCenter,
 		rack:                    rack,
-		DiskType:              diskType,
 		needleMapKind:           needleMapKind,
 		FixJpgOrientation:       fixJpgOrientation,
 		ReadRedirect:            readRedirect,
@@ -78,7 +76,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 
 	vs.checkWithMaster()
 
-	vs.store = storage.NewStore(vs.grpcDialOption, port, ip, publicUrl, folders, maxCounts, minFreeSpacePercents, idxFolder, vs.needleMapKind, vs.DiskType)
+	vs.store = storage.NewStore(vs.grpcDialOption, port, ip, publicUrl, folders, maxCounts, minFreeSpacePercents, idxFolder, vs.needleMapKind, diskTypes)
 	vs.guard = security.NewGuard(whiteList, signingKey, expiresAfterSec, readSigningKey, readExpiresAfterSec)
 
 	handleStaticResources(adminMux)
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 1b1c771df..fc524876d 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -52,11 +52,11 @@ func (s *Store) String() (str string) {
 	return
 }
 
-func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType, diskType DiskType) (s *Store) {
+func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType, diskTypes []DiskType) (s *Store) {
 	s = &Store{grpcDialOption: grpcDialOption, Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapType: needleMapKind}
 	s.Locations = make([]*DiskLocation, 0)
 	for i := 0; i < len(dirnames); i++ {
-		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder, diskType)
+		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder, diskTypes[i])
 		location.loadExistingVolumes(needleMapKind)
 		s.Locations = append(s.Locations, location)
 		stats.VolumeServerMaxVolumeCounter.Add(float64(maxVolumeCounts[i]))

From 94525aa0fdb8ecbb3f2adf1d9a04bb1572540700 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 23:08:21 -0800
Subject: [PATCH 012/140] allocate volume by disk type

---
 other/java/client/src/main/proto/filer.proto |    6 +-
 weed/pb/filer.proto                          |    6 +-
 weed/pb/filer_pb/filer.pb.go                 |  739 +++++----
 weed/pb/master.proto                         |    8 +-
 weed/pb/master_pb/master.pb.go               |  263 ++--
 weed/pb/volume_server.proto                  |    2 +
 weed/pb/volume_server_pb/volume_server.pb.go | 1446 +++++++++---------
 weed/server/volume_grpc_admin.go             |    2 +
 weed/server/volume_grpc_copy.go              |   11 +-
 weed/server/volume_grpc_erasure_coding.go    |    2 +-
 weed/storage/store.go                        |   10 +-
 weed/storage/volume.go                       |    6 +-
 weed/topology/allocate_volume.go             |    1 +
 13 files changed, 1265 insertions(+), 1237 deletions(-)

diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index fe26cca15..ac4c9a0e7 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -156,7 +156,7 @@ message FuseAttributes {
     repeated string group_name = 12; // for hdfs
     string symlink_target = 13;
     bytes md5 = 14;
-    string volume_type = 15;
+    string disk_type = 15;
 }
 
 message CreateEntryRequest {
@@ -221,7 +221,7 @@ message AssignVolumeRequest {
     string data_center = 5;
     string path = 6;
     string rack = 7;
-    string volume_type = 8;
+    string disk_type = 8;
 }
 
 message AssignVolumeResponse {
@@ -272,7 +272,7 @@ message StatisticsRequest {
     string replication = 1;
     string collection = 2;
     string ttl = 3;
-    string volume_type = 4;
+    string disk_type = 4;
 }
 message StatisticsResponse {
     uint64 total_size = 4;
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index fe26cca15..ac4c9a0e7 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -156,7 +156,7 @@ message FuseAttributes {
     repeated string group_name = 12; // for hdfs
     string symlink_target = 13;
     bytes md5 = 14;
-    string volume_type = 15;
+    string disk_type = 15;
 }
 
 message CreateEntryRequest {
@@ -221,7 +221,7 @@ message AssignVolumeRequest {
     string data_center = 5;
     string path = 6;
     string rack = 7;
-    string volume_type = 8;
+    string disk_type = 8;
 }
 
 message AssignVolumeResponse {
@@ -272,7 +272,7 @@ message StatisticsRequest {
     string replication = 1;
     string collection = 2;
     string ttl = 3;
-    string volume_type = 4;
+    string disk_type = 4;
 }
 message StatisticsResponse {
     uint64 total_size = 4;
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index 671a5188b..607a2f26e 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -758,7 +758,7 @@ type FuseAttributes struct {
 	GroupName     []string `protobuf:"bytes,12,rep,name=group_name,json=groupName,proto3" json:"group_name,omitempty"` // for hdfs
 	SymlinkTarget string   `protobuf:"bytes,13,opt,name=symlink_target,json=symlinkTarget,proto3" json:"symlink_target,omitempty"`
 	Md5           []byte   `protobuf:"bytes,14,opt,name=md5,proto3" json:"md5,omitempty"`
-	DiskType    string   `protobuf:"bytes,15,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType      string   `protobuf:"bytes,15,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *FuseAttributes) Reset() {
@@ -1498,7 +1498,7 @@ type AssignVolumeRequest struct {
 	DataCenter  string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
 	Path        string `protobuf:"bytes,6,opt,name=path,proto3" json:"path,omitempty"`
 	Rack        string `protobuf:"bytes,7,opt,name=rack,proto3" json:"rack,omitempty"`
-	DiskType  string `protobuf:"bytes,8,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType    string `protobuf:"bytes,8,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *AssignVolumeRequest) Reset() {
@@ -2130,7 +2130,7 @@ type StatisticsRequest struct {
 	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	DiskType  string `protobuf:"bytes,4,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType    string `protobuf:"bytes,4,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *StatisticsRequest) Reset() {
@@ -3326,7 +3326,7 @@ var file_filer_proto_rawDesc = []byte{
 	0x12, 0x19, 0x0a, 0x08, 0x66, 0x69, 0x6c, 0x65, 0x5f, 0x6b, 0x65, 0x79, 0x18, 0x02, 0x20, 0x01,
 	0x28, 0x04, 0x52, 0x07, 0x66, 0x69, 0x6c, 0x65, 0x4b, 0x65, 0x79, 0x12, 0x16, 0x0a, 0x06, 0x63,
 	0x6f, 0x6f, 0x6b, 0x69, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x07, 0x52, 0x06, 0x63, 0x6f, 0x6f,
-	0x6b, 0x69, 0x65, 0x22, 0xa1, 0x03, 0x0a, 0x0e, 0x46, 0x75, 0x73, 0x65, 0x41, 0x74, 0x74, 0x72,
+	0x6b, 0x69, 0x65, 0x22, 0x9d, 0x03, 0x0a, 0x0e, 0x46, 0x75, 0x73, 0x65, 0x41, 0x74, 0x74, 0x72,
 	0x69, 0x62, 0x75, 0x74, 0x65, 0x73, 0x12, 0x1b, 0x0a, 0x09, 0x66, 0x69, 0x6c, 0x65, 0x5f, 0x73,
 	0x69, 0x7a, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x08, 0x66, 0x69, 0x6c, 0x65, 0x53,
 	0x69, 0x7a, 0x65, 0x12, 0x14, 0x0a, 0x05, 0x6d, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01,
@@ -3350,380 +3350,379 @@ var file_filer_proto_rawDesc = []byte{
 	0x0e, 0x73, 0x79, 0x6d, 0x6c, 0x69, 0x6e, 0x6b, 0x5f, 0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x18,
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 }
 
 var (
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 30ba4d003..613b794df 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -89,7 +89,7 @@ message VolumeInformationMessage {
     int64 modified_at_second = 12;
     string remote_storage_name = 13;
     string remote_storage_key = 14;
-    string volume_type = 15;
+    string disk_type = 15;
 }
 
 message VolumeShortInformationMessage {
@@ -98,7 +98,7 @@ message VolumeShortInformationMessage {
     uint32 replica_placement = 8;
     uint32 version = 9;
     uint32 ttl = 10;
-    string volume_type = 15;
+    string disk_type = 15;
 }
 
 message VolumeEcShardInformationMessage {
@@ -167,7 +167,7 @@ message AssignRequest {
     string data_node = 7;
     uint32 memory_map_max_size_mb = 8;
     uint32 Writable_volume_count = 9;
-    string volume_type = 10;
+    string disk_type = 10;
 }
 message AssignResponse {
     string fid = 1;
@@ -182,7 +182,7 @@ message StatisticsRequest {
     string replication = 1;
     string collection = 2;
     string ttl = 3;
-    string volume_type = 4;
+    string disk_type = 4;
 }
 message StatisticsResponse {
     uint64 total_size = 4;
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 74fb00f6d..9f59f5c86 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -305,7 +305,7 @@ type VolumeInformationMessage struct {
 	ModifiedAtSecond  int64  `protobuf:"varint,12,opt,name=modified_at_second,json=modifiedAtSecond,proto3" json:"modified_at_second,omitempty"`
 	RemoteStorageName string `protobuf:"bytes,13,opt,name=remote_storage_name,json=remoteStorageName,proto3" json:"remote_storage_name,omitempty"`
 	RemoteStorageKey  string `protobuf:"bytes,14,opt,name=remote_storage_key,json=remoteStorageKey,proto3" json:"remote_storage_key,omitempty"`
-	DiskType        string `protobuf:"bytes,15,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType          string `protobuf:"bytes,15,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *VolumeInformationMessage) Reset() {
@@ -455,7 +455,7 @@ type VolumeShortInformationMessage struct {
 	ReplicaPlacement uint32 `protobuf:"varint,8,opt,name=replica_placement,json=replicaPlacement,proto3" json:"replica_placement,omitempty"`
 	Version          uint32 `protobuf:"varint,9,opt,name=version,proto3" json:"version,omitempty"`
 	Ttl              uint32 `protobuf:"varint,10,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	DiskType       string `protobuf:"bytes,15,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType         string `protobuf:"bytes,15,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *VolumeShortInformationMessage) Reset() {
@@ -1056,7 +1056,7 @@ type AssignRequest struct {
 	DataNode            string `protobuf:"bytes,7,opt,name=data_node,json=dataNode,proto3" json:"data_node,omitempty"`
 	MemoryMapMaxSizeMb  uint32 `protobuf:"varint,8,opt,name=memory_map_max_size_mb,json=memoryMapMaxSizeMb,proto3" json:"memory_map_max_size_mb,omitempty"`
 	WritableVolumeCount uint32 `protobuf:"varint,9,opt,name=Writable_volume_count,json=WritableVolumeCount,proto3" json:"Writable_volume_count,omitempty"`
-	DiskType          string `protobuf:"bytes,10,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType            string `protobuf:"bytes,10,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *AssignRequest) Reset() {
@@ -1256,7 +1256,7 @@ type StatisticsRequest struct {
 	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
-	DiskType  string `protobuf:"bytes,4,opt,name=volume_type,json=diskType,proto3" json:"volume_type,omitempty"`
+	DiskType    string `protobuf:"bytes,4,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *StatisticsRequest) Reset() {
@@ -3037,7 +3037,7 @@ var file_master_proto_rawDesc = []byte{
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@@ -3069,134 +3069,133 @@ var file_master_proto_rawDesc = []byte{
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diff --git a/weed/pb/volume_server.proto b/weed/pb/volume_server.proto
index 73ec16239..7fd781ee8 100644
--- a/weed/pb/volume_server.proto
+++ b/weed/pb/volume_server.proto
@@ -157,6 +157,7 @@ message AllocateVolumeRequest {
     string replication = 4;
     string ttl = 5;
     uint32 memory_map_max_size_mb = 6;
+    string disk_type = 7;
 }
 message AllocateVolumeResponse {
 }
@@ -361,6 +362,7 @@ message ReadVolumeFileStatusResponse {
     uint64 file_count = 6;
     uint32 compaction_revision = 7;
     string collection = 8;
+    string disk_type = 9;
 }
 
 message DiskStatus {
diff --git a/weed/pb/volume_server_pb/volume_server.pb.go b/weed/pb/volume_server_pb/volume_server.pb.go
index ee33b8263..79543bbac 100644
--- a/weed/pb/volume_server_pb/volume_server.pb.go
+++ b/weed/pb/volume_server_pb/volume_server.pb.go
@@ -710,6 +710,7 @@ type AllocateVolumeRequest struct {
 	Replication        string `protobuf:"bytes,4,opt,name=replication,proto3" json:"replication,omitempty"`
 	Ttl                string `protobuf:"bytes,5,opt,name=ttl,proto3" json:"ttl,omitempty"`
 	MemoryMapMaxSizeMb uint32 `protobuf:"varint,6,opt,name=memory_map_max_size_mb,json=memoryMapMaxSizeMb,proto3" json:"memory_map_max_size_mb,omitempty"`
+	DiskType           string `protobuf:"bytes,7,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *AllocateVolumeRequest) Reset() {
@@ -786,6 +787,13 @@ func (x *AllocateVolumeRequest) GetMemoryMapMaxSizeMb() uint32 {
 	return 0
 }
 
+func (x *AllocateVolumeRequest) GetDiskType() string {
+	if x != nil {
+		return x.DiskType
+	}
+	return ""
+}
+
 type AllocateVolumeResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3211,6 +3219,7 @@ type ReadVolumeFileStatusResponse struct {
 	FileCount               uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
 	CompactionRevision      uint32 `protobuf:"varint,7,opt,name=compaction_revision,json=compactionRevision,proto3" json:"compaction_revision,omitempty"`
 	Collection              string `protobuf:"bytes,8,opt,name=collection,proto3" json:"collection,omitempty"`
+	DiskType                string `protobuf:"bytes,9,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *ReadVolumeFileStatusResponse) Reset() {
@@ -3301,6 +3310,13 @@ func (x *ReadVolumeFileStatusResponse) GetCollection() string {
 	return ""
 }
 
+func (x *ReadVolumeFileStatusResponse) GetDiskType() string {
+	if x != nil {
+		return x.DiskType
+	}
+	return ""
+}
+
 type DiskStatus struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -4880,7 +4896,7 @@ var file_volume_server_proto_rawDesc = []byte{
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@@ -4894,744 +4910,748 @@ var file_volume_server_proto_rawDesc = []byte{
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+	0x6d, 0x6f, 0x74, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x30, 0x01,
+	0x12, 0x71, 0x0a, 0x12, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72,
+	0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x2b, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f,
+	0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65,
+	0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x71, 0x75,
+	0x65, 0x73, 0x74, 0x1a, 0x2c, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72,
+	0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x53, 0x65, 0x72,
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+	0x65, 0x22, 0x00, 0x12, 0x6e, 0x0a, 0x11, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x53, 0x65, 0x72,
+	0x76, 0x65, 0x72, 0x4c, 0x65, 0x61, 0x76, 0x65, 0x12, 0x2a, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d,
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+	0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x4c, 0x65, 0x61, 0x76, 0x65, 0x52, 0x65, 0x71,
+	0x75, 0x65, 0x73, 0x74, 0x1a, 0x2b, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65,
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 	0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e,
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-	0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c,
-	0x75, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52,
-	0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x6e, 0x0a, 0x11, 0x56, 0x6f, 0x6c,
-	0x75, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x4c, 0x65, 0x61, 0x76, 0x65, 0x12, 0x2a,
-	0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70,
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-	0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f,
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-	0x72, 0x79, 0x12, 0x1e, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76,
-	0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x51, 0x75, 0x65, 0x72, 0x79, 0x52, 0x65, 0x71, 0x75, 0x65,
-	0x73, 0x74, 0x1a, 0x1f, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76,
-	0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x51, 0x75, 0x65, 0x72, 0x69, 0x65, 0x64, 0x53, 0x74, 0x72,
-	0x69, 0x70, 0x65, 0x22, 0x00, 0x30, 0x01, 0x12, 0x71, 0x0a, 0x12, 0x56, 0x6f, 0x6c, 0x75, 0x6d,
-	0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c, 0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x2b, 0x2e,
-	0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62,
-	0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c, 0x65, 0x53, 0x74, 0x61,
-	0x74, 0x75, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x2c, 0x2e, 0x76, 0x6f, 0x6c,
-	0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f,
-	0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c, 0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73,
-	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x39, 0x5a, 0x37, 0x67, 0x69,
-	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75,
-	0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65,
-	0x64, 0x2f, 0x70, 0x62, 0x2f, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76,
-	0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x51, 0x75, 0x65, 0x72, 0x79, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1f, 0x2e, 0x76,
+	0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e,
+	0x51, 0x75, 0x65, 0x72, 0x69, 0x65, 0x64, 0x53, 0x74, 0x72, 0x69, 0x70, 0x65, 0x22, 0x00, 0x30,
+	0x01, 0x12, 0x71, 0x0a, 0x12, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c,
+	0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x2b, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65,
+	0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d,
+	0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c, 0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x71,
+	0x75, 0x65, 0x73, 0x74, 0x1a, 0x2c, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65,
+	0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65,
+	0x65, 0x64, 0x6c, 0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x73, 0x65, 0x22, 0x00, 0x42, 0x39, 0x5a, 0x37, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61,
+	0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x76,
+	0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/weed/server/volume_grpc_admin.go b/weed/server/volume_grpc_admin.go
index 9296c63e9..55bb6573e 100644
--- a/weed/server/volume_grpc_admin.go
+++ b/weed/server/volume_grpc_admin.go
@@ -3,6 +3,7 @@ package weed_server
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"path/filepath"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -41,6 +42,7 @@ func (vs *VolumeServer) AllocateVolume(ctx context.Context, req *volume_server_p
 		req.Ttl,
 		req.Preallocate,
 		req.MemoryMapMaxSizeMb,
+		storage.DiskType(req.DiskType),
 	)
 
 	if err != nil {
diff --git a/weed/server/volume_grpc_copy.go b/weed/server/volume_grpc_copy.go
index cfa3710a8..26c6b28e7 100644
--- a/weed/server/volume_grpc_copy.go
+++ b/weed/server/volume_grpc_copy.go
@@ -36,11 +36,6 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
 		glog.V(0).Infof("deleted existing volume %d before copying.", req.VolumeId)
 	}
 
-	location := vs.store.FindFreeLocation()
-	if location == nil {
-		return nil, fmt.Errorf("no space left")
-	}
-
 	// the master will not start compaction for read-only volumes, so it is safe to just copy files directly
 	// copy .dat and .idx files
 	//   read .idx .dat file size and timestamp
@@ -59,6 +54,11 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
 			return fmt.Errorf("read volume file status failed, %v", err)
 		}
 
+		location := vs.store.FindFreeLocation(storage.DiskType(volFileInfoResp.DiskType))
+		if location == nil {
+			return fmt.Errorf("no space left")
+		}
+
 		dataBaseFileName = storage.VolumeFileName(location.Directory, volFileInfoResp.Collection, int(req.VolumeId))
 		indexBaseFileName = storage.VolumeFileName(location.IdxDirectory, volFileInfoResp.Collection, int(req.VolumeId))
 
@@ -206,6 +206,7 @@ func (vs *VolumeServer) ReadVolumeFileStatus(ctx context.Context, req *volume_se
 	resp.FileCount = v.FileCount()
 	resp.CompactionRevision = uint32(v.CompactionRevision)
 	resp.Collection = v.Collection
+	resp.DiskType = string(v.DiskType())
 	return resp, nil
 }
 
diff --git a/weed/server/volume_grpc_erasure_coding.go b/weed/server/volume_grpc_erasure_coding.go
index 2a7076e04..e13afdf55 100644
--- a/weed/server/volume_grpc_erasure_coding.go
+++ b/weed/server/volume_grpc_erasure_coding.go
@@ -105,7 +105,7 @@ func (vs *VolumeServer) VolumeEcShardsCopy(ctx context.Context, req *volume_serv
 
 	glog.V(0).Infof("VolumeEcShardsCopy: %v", req)
 
-	location := vs.store.FindFreeLocation()
+	location := vs.store.FindFreeLocation(storage.HardDriveType)
 	if location == nil {
 		return nil, fmt.Errorf("no space left")
 	}
diff --git a/weed/storage/store.go b/weed/storage/store.go
index fc524876d..b7e439ad3 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -69,7 +69,7 @@ func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, di
 
 	return
 }
-func (s *Store) AddVolume(volumeId needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement string, ttlString string, preallocate int64, MemoryMapMaxSizeMb uint32) error {
+func (s *Store) AddVolume(volumeId needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement string, ttlString string, preallocate int64, MemoryMapMaxSizeMb uint32, diskType DiskType) error {
 	rt, e := super_block.NewReplicaPlacementFromString(replicaPlacement)
 	if e != nil {
 		return e
@@ -78,7 +78,7 @@ func (s *Store) AddVolume(volumeId needle.VolumeId, collection string, needleMap
 	if e != nil {
 		return e
 	}
-	e = s.addVolume(volumeId, collection, needleMapKind, rt, ttl, preallocate, MemoryMapMaxSizeMb)
+	e = s.addVolume(volumeId, collection, needleMapKind, rt, ttl, preallocate, MemoryMapMaxSizeMb, diskType)
 	return e
 }
 func (s *Store) DeleteCollection(collection string) (e error) {
@@ -100,7 +100,7 @@ func (s *Store) findVolume(vid needle.VolumeId) *Volume {
 	}
 	return nil
 }
-func (s *Store) FindFreeLocation() (ret *DiskLocation) {
+func (s *Store) FindFreeLocation(diskType DiskType) (ret *DiskLocation) {
 	max := 0
 	for _, location := range s.Locations {
 		currentFreeCount := location.MaxVolumeCount - location.VolumesLen()
@@ -114,11 +114,11 @@ func (s *Store) FindFreeLocation() (ret *DiskLocation) {
 	}
 	return ret
 }
-func (s *Store) addVolume(vid needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) error {
+func (s *Store) addVolume(vid needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32, diskType DiskType) error {
 	if s.findVolume(vid) != nil {
 		return fmt.Errorf("Volume Id %d already exists!", vid)
 	}
-	if location := s.FindFreeLocation(); location != nil {
+	if location := s.FindFreeLocation(diskType); location != nil {
 		glog.V(0).Infof("In dir %s adds volume:%v collection:%s replicaPlacement:%v ttl:%v",
 			location.Directory, vid, collection, replicaPlacement, ttl)
 		if volume, err := NewVolume(location.Directory, location.IdxDirectory, collection, vid, needleMapKind, replicaPlacement, ttl, preallocate, memoryMapMaxSizeMb); err == nil {
diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index ebc1bff3e..1905a85a5 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -171,6 +171,10 @@ func (v *Volume) IndexFileSize() uint64 {
 	return v.nm.IndexFileSize()
 }
 
+func (v *Volume) DiskType() DiskType {
+	return v.location.DiskType
+}
+
 // Close cleanly shuts down this volume
 func (v *Volume) Close() {
 	v.dataFileAccessLock.Lock()
@@ -262,7 +266,7 @@ func (v *Volume) ToVolumeInformationMessage() (types.NeedleId, *master_pb.Volume
 		Ttl:              v.Ttl.ToUint32(),
 		CompactRevision:  uint32(v.SuperBlock.CompactionRevision),
 		ModifiedAtSecond: modTime.Unix(),
-		DiskType:       string(v.location.DiskType),
+		DiskType:         string(v.location.DiskType),
 	}
 
 	volumeInfo.RemoteStorageName, volumeInfo.RemoteStorageKey = v.RemoteStorageNameKey()
diff --git a/weed/topology/allocate_volume.go b/weed/topology/allocate_volume.go
index e5dc48652..39c24ab04 100644
--- a/weed/topology/allocate_volume.go
+++ b/weed/topology/allocate_volume.go
@@ -24,6 +24,7 @@ func AllocateVolume(dn *DataNode, grpcDialOption grpc.DialOption, vid needle.Vol
 			Ttl:                option.Ttl.String(),
 			Preallocate:        option.Prealloacte,
 			MemoryMapMaxSizeMb: option.MemoryMapMaxSizeMb,
+			DiskType:           string(option.DiskType),
 		})
 		return deleteErr
 	})

From 933f2f4cfdfa9abd16f735abb6b83f00aabe83b3 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 13 Dec 2020 23:39:00 -0800
Subject: [PATCH 013/140] find location with matching disk type

---
 weed/storage/store.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/storage/store.go b/weed/storage/store.go
index b7e439ad3..8351ecf3b 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -103,6 +103,9 @@ func (s *Store) findVolume(vid needle.VolumeId) *Volume {
 func (s *Store) FindFreeLocation(diskType DiskType) (ret *DiskLocation) {
 	max := 0
 	for _, location := range s.Locations {
+		if diskType != location.DiskType {
+			continue
+		}
 		currentFreeCount := location.MaxVolumeCount - location.VolumesLen()
 		currentFreeCount *= erasure_coding.DataShardsCount
 		currentFreeCount -= location.EcVolumesLen()

From 5cffddebb91d71c395721f02c69279da8e685ed1 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 14 Dec 2020 00:11:52 -0800
Subject: [PATCH 014/140] add logging

---
 weed/shell/command_volume_balance.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index d30de25fc..cebe494e7 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -113,6 +113,7 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
 	// balance writable hdd volumes
+	// fmt.Fprintf(os.Stdout, "\nbalance collection %s writable hdd volumes\n", collection)
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -128,6 +129,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 	}
 
 	// balance readable hdd volumes
+	// fmt.Fprintf(os.Stdout, "\nbalance collection %s readable hdd volumes\n", collection)
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -143,6 +145,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 	}
 
 	// balance writable ssd volumes
+	// fmt.Fprintf(os.Stdout, "\nbalance collection %s writable ssd volumes\n", collection)
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -158,6 +161,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 	}
 
 	// balance readable ssd volumes
+	// fmt.Fprintf(os.Stdout, "\nbalance collection %s readable ssd volumes\n", collection)
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -249,6 +253,8 @@ func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*
 
 	hasMoved := true
 
+	// fmt.Fprintf(os.Stdout, " total %d volumes, max %d volumes, idealVolumeRatio %f\n", selectedVolumeCount, volumeMaxCount, idealVolumeRatio)
+
 	for hasMoved {
 		hasMoved = false
 		sort.Slice(nodes, func(i, j int) bool {
@@ -319,7 +325,7 @@ func moveVolume(commandEnv *CommandEnv, v *master_pb.VolumeInformationMessage, f
 	if v.Collection == "" {
 		collectionPrefix = ""
 	}
-	fmt.Fprintf(os.Stdout, "moving volume %s%d %s => %s\n", collectionPrefix, v.Id, fullNode.info.Id, emptyNode.info.Id)
+	fmt.Fprintf(os.Stdout, "  moving %s volume %s%d %s => %s\n", v.DiskType, collectionPrefix, v.Id, fullNode.info.Id, emptyNode.info.Id)
 	if applyChange {
 		return LiveMoveVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second)
 	}

From 2e8dba571b9182ea5f5cdc74bffabce33db514a7 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 14 Dec 2020 00:51:57 -0800
Subject: [PATCH 015/140] adjust volume server UI

---
 weed/pb/volume_server.proto                  |   1 +
 weed/pb/volume_server_pb/volume_server.pb.go | 904 ++++++++++---------
 weed/server/volume_server_handlers_admin.go  |   8 +-
 weed/server/volume_server_handlers_ui.go     |   4 +-
 weed/server/volume_server_ui/templates.go    |   2 +
 weed/storage/disk_location.go                |   7 +
 6 files changed, 476 insertions(+), 450 deletions(-)

diff --git a/weed/pb/volume_server.proto b/weed/pb/volume_server.proto
index 7fd781ee8..e4af81054 100644
--- a/weed/pb/volume_server.proto
+++ b/weed/pb/volume_server.proto
@@ -372,6 +372,7 @@ message DiskStatus {
     uint64 free = 4;
     float percent_free = 5;
     float percent_used = 6;
+    string disk_type = 7;
 }
 
 message MemStatus {
diff --git a/weed/pb/volume_server_pb/volume_server.pb.go b/weed/pb/volume_server_pb/volume_server.pb.go
index 79543bbac..753b2af69 100644
--- a/weed/pb/volume_server_pb/volume_server.pb.go
+++ b/weed/pb/volume_server_pb/volume_server.pb.go
@@ -3328,6 +3328,7 @@ type DiskStatus struct {
 	Free        uint64  `protobuf:"varint,4,opt,name=free,proto3" json:"free,omitempty"`
 	PercentFree float32 `protobuf:"fixed32,5,opt,name=percent_free,json=percentFree,proto3" json:"percent_free,omitempty"`
 	PercentUsed float32 `protobuf:"fixed32,6,opt,name=percent_used,json=percentUsed,proto3" json:"percent_used,omitempty"`
+	DiskType    string  `protobuf:"bytes,7,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *DiskStatus) Reset() {
@@ -3404,6 +3405,13 @@ func (x *DiskStatus) GetPercentUsed() float32 {
 	return 0
 }
 
+func (x *DiskStatus) GetDiskType() string {
+	if x != nil {
+		return x.DiskType
+	}
+	return ""
+}
+
 type MemStatus struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -5176,7 +5184,7 @@ var file_volume_server_proto_rawDesc = []byte{
 	0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x08, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x63, 0x6f,
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@@ -5186,472 +5194,474 @@ var file_volume_server_proto_rawDesc = []byte{
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+	0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65,
+	0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x76, 0x6f, 0x6c, 0x75,
+	0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/weed/server/volume_server_handlers_admin.go b/weed/server/volume_server_handlers_admin.go
index 4d84c9c4d..29bd70d71 100644
--- a/weed/server/volume_server_handlers_admin.go
+++ b/weed/server/volume_server_handlers_admin.go
@@ -16,7 +16,9 @@ func (vs *VolumeServer) statusHandler(w http.ResponseWriter, r *http.Request) {
 	var ds []*volume_server_pb.DiskStatus
 	for _, loc := range vs.store.Locations {
 		if dir, e := filepath.Abs(loc.Directory); e == nil {
-			ds = append(ds, stats.NewDiskStatus(dir))
+			newDiskStatus := stats.NewDiskStatus(dir)
+			newDiskStatus.DiskType = loc.GetDiskType()
+			ds = append(ds, newDiskStatus)
 		}
 	}
 	m["DiskStatuses"] = ds
@@ -31,7 +33,9 @@ func (vs *VolumeServer) statsDiskHandler(w http.ResponseWriter, r *http.Request)
 	var ds []*volume_server_pb.DiskStatus
 	for _, loc := range vs.store.Locations {
 		if dir, e := filepath.Abs(loc.Directory); e == nil {
-			ds = append(ds, stats.NewDiskStatus(dir))
+			newDiskStatus := stats.NewDiskStatus(dir)
+			newDiskStatus.DiskType = loc.GetDiskType()
+			ds = append(ds, newDiskStatus)
 		}
 	}
 	m["DiskStatuses"] = ds
diff --git a/weed/server/volume_server_handlers_ui.go b/weed/server/volume_server_handlers_ui.go
index e535327e2..95c7549d2 100644
--- a/weed/server/volume_server_handlers_ui.go
+++ b/weed/server/volume_server_handlers_ui.go
@@ -19,7 +19,9 @@ func (vs *VolumeServer) uiStatusHandler(w http.ResponseWriter, r *http.Request)
 	var ds []*volume_server_pb.DiskStatus
 	for _, loc := range vs.store.Locations {
 		if dir, e := filepath.Abs(loc.Directory); e == nil {
-			ds = append(ds, stats.NewDiskStatus(dir))
+			newDiskStatus := stats.NewDiskStatus(dir)
+			newDiskStatus.DiskType = loc.GetDiskType()
+			ds = append(ds, newDiskStatus)
 		}
 	}
 	volumeInfos := vs.store.VolumeInfos()
diff --git a/weed/server/volume_server_ui/templates.go b/weed/server/volume_server_ui/templates.go
index 8705bc088..2a93c3441 100644
--- a/weed/server/volume_server_ui/templates.go
+++ b/weed/server/volume_server_ui/templates.go
@@ -69,6 +69,7 @@ var StatusTpl = template.Must(template.New("status").Funcs(funcMap).Parse(`<!DOC
             <thead>
               <tr>
               <th>Path</th>
+              <th>Type</th>
               <th>Total</th>
               <th>Free</th>
               <th>Usage</th>
@@ -78,6 +79,7 @@ var StatusTpl = template.Must(template.New("status").Funcs(funcMap).Parse(`<!DOC
           {{ range .DiskStatuses }}
             <tr>
               <td>{{ .Dir }}</td>
+              <td>{{ .DiskType }}</td>
               <td>{{ bytesToHumanReadable .All }}</td>
               <td>{{ bytesToHumanReadable .Free  }}</td>
               <td>{{ percentFrom .All .Used}}%</td>
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index 88a52ccd8..7030900dc 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -354,3 +354,10 @@ func (l *DiskLocation) CheckDiskSpace() {
 	}
 
 }
+
+func (l *DiskLocation) GetDiskType() string {
+	if l.DiskType == SsdType {
+		return "SSD"
+	}
+	return "HDD"
+}
\ No newline at end of file

From 1d88865869b554d72be8fe2629080bcd97cb8767 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 16 Dec 2020 09:10:14 -0800
Subject: [PATCH 016/140] passing disk type along

---
 weed/server/filer_server_handlers_write.go | 2 +-
 weed/storage/store.go                      | 4 ++++
 weed/storage/volume_info.go                | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index 5d3f2be62..6af06b90b 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -135,7 +135,7 @@ func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication
 		DataCenter:        util.Nvl(dataCenter, fs.option.DataCenter),
 		Rack:              util.Nvl(rack, fs.option.Rack),
 		TtlSeconds:        ttlSeconds,
-		DiskType:        diskType,
+		DiskType:          util.Nvl(diskType, rule.DiskType),
 		Fsync:             fsync || rule.Fsync,
 		VolumeGrowthCount: rule.VolumeGrowthCount,
 	}
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 8351ecf3b..699350392 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -133,6 +133,7 @@ func (s *Store) addVolume(vid needle.VolumeId, collection string, needleMapKind
 				ReplicaPlacement: uint32(replicaPlacement.Byte()),
 				Version:          uint32(volume.Version()),
 				Ttl:              ttl.ToUint32(),
+				DiskType:         string(diskType),
 			}
 			return nil
 		} else {
@@ -381,6 +382,7 @@ func (s *Store) MountVolume(i needle.VolumeId) error {
 				ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()),
 				Version:          uint32(v.Version()),
 				Ttl:              v.Ttl.ToUint32(),
+				DiskType:         string(v.location.DiskType),
 			}
 			return nil
 		}
@@ -400,6 +402,7 @@ func (s *Store) UnmountVolume(i needle.VolumeId) error {
 		ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()),
 		Version:          uint32(v.Version()),
 		Ttl:              v.Ttl.ToUint32(),
+		DiskType:         string(v.location.DiskType),
 	}
 
 	for _, location := range s.Locations {
@@ -424,6 +427,7 @@ func (s *Store) DeleteVolume(i needle.VolumeId) error {
 		ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()),
 		Version:          uint32(v.Version()),
 		Ttl:              v.Ttl.ToUint32(),
+		DiskType:         string(v.location.DiskType),
 	}
 	for _, location := range s.Locations {
 		if err := location.DeleteVolume(i); err == nil {
diff --git a/weed/storage/volume_info.go b/weed/storage/volume_info.go
index 24577618e..e9ecb500a 100644
--- a/weed/storage/volume_info.go
+++ b/weed/storage/volume_info.go
@@ -64,6 +64,7 @@ func NewVolumeInfoFromShort(m *master_pb.VolumeShortInformationMessage) (vi Volu
 	}
 	vi.ReplicaPlacement = rp
 	vi.Ttl = needle.LoadTTLFromUint32(m.Ttl)
+	vi.DiskType = m.DiskType
 	return vi, nil
 }
 

From 1bf22c0b5b1ecd99cb1631800e5a6818e8d8d1b1 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 16 Dec 2020 09:14:05 -0800
Subject: [PATCH 017/140] go fmt

---
 weed/command/benchmark.go                            |  4 ++--
 weed/command/filer_copy.go                           |  6 +++---
 weed/command/filer_sync.go                           |  4 ++--
 weed/command/mount.go                                |  2 +-
 weed/command/mount_std.go                            |  2 +-
 weed/command/upload.go                               |  2 +-
 weed/command/volume.go                               |  2 +-
 weed/filer/abstract_sql/abstract_sql_store_kv.go     |  2 +-
 weed/filer/entry.go                                  |  2 +-
 weed/filer/entry_codec.go                            |  2 +-
 weed/filer/filer_deletion.go                         |  1 -
 weed/filer/read_write.go                             | 12 ++++++------
 weed/filesys/wfs.go                                  |  4 ++--
 weed/filesys/wfs_write.go                            |  2 +-
 weed/operation/assign_file_id.go                     | 10 +++++-----
 weed/operation/submit.go                             |  8 ++++----
 weed/replication/sink/filersink/fetch_write.go       |  2 +-
 weed/replication/sink/filersink/filer_sink.go        |  2 +-
 weed/s3api/auth_credentials.go                       |  1 -
 weed/s3api/s3_constants/s3_actions.go                |  1 -
 weed/server/common.go                                |  2 +-
 weed/server/filer_grpc_server.go                     |  2 +-
 weed/server/filer_server_handlers_write_autochunk.go |  2 +-
 weed/server/filer_server_handlers_write_cipher.go    |  2 +-
 weed/server/master_grpc_server_volume.go             |  2 +-
 weed/server/master_server_handlers_admin.go          |  2 +-
 weed/server/webdav_server.go                         |  4 ++--
 weed/shell/command_volume_server_evacuate.go         |  2 +-
 weed/storage/disk_location.go                        |  8 ++++----
 weed/storage/volume_info.go                          |  6 +++---
 weed/storage/volume_loading.go                       |  8 ++++----
 weed/storage/volume_type.go                          |  2 +-
 weed/topology/topology_test.go                       |  4 ++--
 weed/topology/volume_growth.go                       |  2 +-
 weed/topology/volume_layout.go                       |  4 ++--
 weed/util/config.go                                  | 10 +++++-----
 36 files changed, 65 insertions(+), 68 deletions(-)

diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 9a66083f1..351efd3dc 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -35,7 +35,7 @@ type BenchmarkOptions struct {
 	sequentialRead   *bool
 	collection       *string
 	replication      *string
-	diskType       *string
+	diskType         *string
 	cpuprofile       *string
 	maxCpu           *int
 	grpcDialOption   grpc.DialOption
@@ -236,7 +236,7 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
 			Count:       1,
 			Collection:  *b.collection,
 			Replication: *b.replication,
-			DiskType: *b.diskType,
+			DiskType:    *b.diskType,
 		}
 		if assignResult, err := operation.Assign(b.masterClient.GetMaster(), b.grpcDialOption, ar); err == nil {
 			fp.Server, fp.Fid, fp.Collection = assignResult.Url, assignResult.Fid, *b.collection
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 1b5f4c849..9b4c02904 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -37,7 +37,7 @@ type CopyOptions struct {
 	replication       *string
 	collection        *string
 	ttl               *string
-	diskType        *string
+	diskType          *string
 	maxMB             *int
 	masterClient      *wdclient.MasterClient
 	concurrenctFiles  *int
@@ -313,7 +313,7 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 				Replication: *worker.options.replication,
 				Collection:  *worker.options.collection,
 				TtlSec:      worker.options.ttlSec,
-				DiskType:  *worker.options.diskType,
+				DiskType:    *worker.options.diskType,
 				Path:        task.destinationUrlPath,
 			}
 
@@ -408,7 +408,7 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 					Replication: *worker.options.replication,
 					Collection:  *worker.options.collection,
 					TtlSec:      worker.options.ttlSec,
-					DiskType:  *worker.options.diskType,
+					DiskType:    *worker.options.diskType,
 					Path:        task.destinationUrlPath + fileName,
 				}
 
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index 07a4f8ffb..050fef7d4 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -31,8 +31,8 @@ type SyncOptions struct {
 	bCollection     *string
 	aTtlSec         *int
 	bTtlSec         *int
-	aDiskType     *string
-	bDiskType     *string
+	aDiskType       *string
+	bDiskType       *string
 	aDebug          *bool
 	bDebug          *bool
 }
diff --git a/weed/command/mount.go b/weed/command/mount.go
index dc0bb5488..e380ff57c 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -12,7 +12,7 @@ type MountOptions struct {
 	dirAutoCreate               *bool
 	collection                  *string
 	replication                 *string
-	diskType                  *string
+	diskType                    *string
 	ttlSec                      *int
 	chunkSizeLimitMB            *int
 	concurrentWriters           *int
diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index e3bfba9fb..0798d18af 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -181,7 +181,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		Collection:                  *option.collection,
 		Replication:                 *option.replication,
 		TtlSec:                      int32(*option.ttlSec),
-		DiskType:                  diskType,
+		DiskType:                    diskType,
 		ChunkSizeLimit:              int64(chunkSizeLimitMB) * 1024 * 1024,
 		ConcurrentWriters:           *option.concurrentWriters,
 		CacheDir:                    *option.cacheDir,
diff --git a/weed/command/upload.go b/weed/command/upload.go
index 8ffc0c2b8..592f71610 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -23,7 +23,7 @@ type UploadOptions struct {
 	collection   *string
 	dataCenter   *string
 	ttl          *string
-	diskType   *string
+	diskType     *string
 	maxMB        *int
 	usePublicUrl *bool
 }
diff --git a/weed/command/volume.go b/weed/command/volume.go
index b90dc5967..fa7dcaa06 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -49,7 +49,7 @@ type VolumeServerOptions struct {
 	rack                  *string
 	whiteList             []string
 	indexType             *string
-	diskType            *string
+	diskType              *string
 	fixJpgOrientation     *bool
 	readRedirect          *bool
 	cpuProfile            *string
diff --git a/weed/filer/abstract_sql/abstract_sql_store_kv.go b/weed/filer/abstract_sql/abstract_sql_store_kv.go
index 81d105134..792a45ff4 100644
--- a/weed/filer/abstract_sql/abstract_sql_store_kv.go
+++ b/weed/filer/abstract_sql/abstract_sql_store_kv.go
@@ -34,7 +34,7 @@ func (store *AbstractSqlStore) KvPut(ctx context.Context, key []byte, value []by
 	}
 
 	_, err = res.RowsAffected()
-	if err != nil  {
+	if err != nil {
 		return fmt.Errorf("kv upsert no rows affected: %s", err)
 	}
 	return nil
diff --git a/weed/filer/entry.go b/weed/filer/entry.go
index 987ea8cca..b7c8370e6 100644
--- a/weed/filer/entry.go
+++ b/weed/filer/entry.go
@@ -18,7 +18,7 @@ type Attr struct {
 	Replication   string      // replication
 	Collection    string      // collection name
 	TtlSec        int32       // ttl in seconds
-	DiskType    string
+	DiskType      string
 	UserName      string
 	GroupNames    []string
 	SymlinkTarget string
diff --git a/weed/filer/entry_codec.go b/weed/filer/entry_codec.go
index cc7353974..4c613f068 100644
--- a/weed/filer/entry_codec.go
+++ b/weed/filer/entry_codec.go
@@ -56,7 +56,7 @@ func EntryAttributeToPb(entry *Entry) *filer_pb.FuseAttributes {
 		Collection:    entry.Attr.Collection,
 		Replication:   entry.Attr.Replication,
 		TtlSec:        entry.Attr.TtlSec,
-		DiskType:    entry.Attr.DiskType,
+		DiskType:      entry.Attr.DiskType,
 		UserName:      entry.Attr.UserName,
 		GroupName:     entry.Attr.GroupNames,
 		SymlinkTarget: entry.Attr.SymlinkTarget,
diff --git a/weed/filer/filer_deletion.go b/weed/filer/filer_deletion.go
index 09af80b42..9eee38277 100644
--- a/weed/filer/filer_deletion.go
+++ b/weed/filer/filer_deletion.go
@@ -151,4 +151,3 @@ func (f *Filer) deleteChunksIfNotNew(oldEntry, newEntry *Entry) {
 	}
 	f.DeleteChunks(toDelete)
 }
-
diff --git a/weed/filer/read_write.go b/weed/filer/read_write.go
index 548473116..1f78057ef 100644
--- a/weed/filer/read_write.go
+++ b/weed/filer/read_write.go
@@ -82,8 +82,8 @@ func SaveInsideFiler(client filer_pb.SeaweedFilerClient, dir, name string, conte
 
 	if err == filer_pb.ErrNotFound {
 		err = filer_pb.CreateEntry(client, &filer_pb.CreateEntryRequest{
-			Directory:          dir,
-			Entry:              &filer_pb.Entry{
+			Directory: dir,
+			Entry: &filer_pb.Entry{
 				Name:        name,
 				IsDirectory: false,
 				Attributes: &filer_pb.FuseAttributes{
@@ -92,7 +92,7 @@ func SaveInsideFiler(client filer_pb.SeaweedFilerClient, dir, name string, conte
 					FileMode:    uint32(0644),
 					Collection:  "",
 					Replication: "",
-					FileSize: uint64(len(content)),
+					FileSize:    uint64(len(content)),
 				},
 				Content: content,
 			},
@@ -103,10 +103,10 @@ func SaveInsideFiler(client filer_pb.SeaweedFilerClient, dir, name string, conte
 		entry.Attributes.Mtime = time.Now().Unix()
 		entry.Attributes.FileSize = uint64(len(content))
 		err = filer_pb.UpdateEntry(client, &filer_pb.UpdateEntryRequest{
-			Directory:          dir,
-			Entry:              entry,
+			Directory: dir,
+			Entry:     entry,
 		})
 	}
 
 	return err
-}
\ No newline at end of file
+}
diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index 48893f80a..d8f865be7 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -31,7 +31,7 @@ type Option struct {
 	Collection         string
 	Replication        string
 	TtlSec             int32
-	DiskType         storage.DiskType
+	DiskType           storage.DiskType
 	ChunkSizeLimit     int64
 	ConcurrentWriters  int
 	CacheDir           string
@@ -178,7 +178,7 @@ func (wfs *WFS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.
 				Collection:  wfs.option.Collection,
 				Replication: wfs.option.Replication,
 				Ttl:         fmt.Sprintf("%ds", wfs.option.TtlSec),
-				DiskType:  string(wfs.option.DiskType),
+				DiskType:    string(wfs.option.DiskType),
 			}
 
 			glog.V(4).Infof("reading filer stats: %+v", request)
diff --git a/weed/filesys/wfs_write.go b/weed/filesys/wfs_write.go
index 903fed810..92ff5c8da 100644
--- a/weed/filesys/wfs_write.go
+++ b/weed/filesys/wfs_write.go
@@ -26,7 +26,7 @@ func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath) filer.SaveDataAsChunkFun
 				Replication: wfs.option.Replication,
 				Collection:  wfs.option.Collection,
 				TtlSec:      wfs.option.TtlSec,
-				DiskType:  string(wfs.option.DiskType),
+				DiskType:    string(wfs.option.DiskType),
 				DataCenter:  wfs.option.DataCenter,
 				Path:        string(fullPath),
 			}
diff --git a/weed/operation/assign_file_id.go b/weed/operation/assign_file_id.go
index bb0b8e6df..b2fcf0c96 100644
--- a/weed/operation/assign_file_id.go
+++ b/weed/operation/assign_file_id.go
@@ -18,7 +18,7 @@ type VolumeAssignRequest struct {
 	Replication         string
 	Collection          string
 	Ttl                 string
-	DiskType          string
+	DiskType            string
 	DataCenter          string
 	Rack                string
 	DataNode            string
@@ -55,7 +55,7 @@ func Assign(server string, grpcDialOption grpc.DialOption, primaryRequest *Volum
 				Replication:         request.Replication,
 				Collection:          request.Collection,
 				Ttl:                 request.Ttl,
-				DiskType:          request.DiskType,
+				DiskType:            request.DiskType,
 				DataCenter:          request.DataCenter,
 				Rack:                request.Rack,
 				DataNode:            request.DataNode,
@@ -107,7 +107,7 @@ func LookupJwt(master string, fileId string) security.EncodedJwt {
 
 type StorageOption struct {
 	Replication       string
-	DiskType        string
+	DiskType          string
 	Collection        string
 	DataCenter        string
 	Rack              string
@@ -126,7 +126,7 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 		Replication:         so.Replication,
 		Collection:          so.Collection,
 		Ttl:                 so.TtlString(),
-		DiskType:          so.DiskType,
+		DiskType:            so.DiskType,
 		DataCenter:          so.DataCenter,
 		Rack:                so.Rack,
 		WritableVolumeCount: so.VolumeGrowthCount,
@@ -137,7 +137,7 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 			Replication:         so.Replication,
 			Collection:          so.Collection,
 			Ttl:                 so.TtlString(),
-			DiskType:          so.DiskType,
+			DiskType:            so.DiskType,
 			DataCenter:          "",
 			Rack:                "",
 			WritableVolumeCount: so.VolumeGrowthCount,
diff --git a/weed/operation/submit.go b/weed/operation/submit.go
index bcdf9ddce..907825311 100644
--- a/weed/operation/submit.go
+++ b/weed/operation/submit.go
@@ -25,7 +25,7 @@ type FilePart struct {
 	Collection  string
 	DataCenter  string
 	Ttl         string
-	DiskType  string
+	DiskType    string
 	Server      string //this comes from assign result
 	Fid         string //this comes from assign result, but customizable
 	Fsync       bool
@@ -50,7 +50,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		Collection:  collection,
 		DataCenter:  dataCenter,
 		Ttl:         ttl,
-		DiskType:  diskType,
+		DiskType:    diskType,
 	}
 	ret, err := Assign(master, grpcDialOption, ar)
 	if err != nil {
@@ -146,7 +146,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 				Replication: fi.Replication,
 				Collection:  fi.Collection,
 				Ttl:         fi.Ttl,
-				DiskType:  fi.DiskType,
+				DiskType:    fi.DiskType,
 			}
 			ret, err = Assign(master, grpcDialOption, ar)
 			if err != nil {
@@ -160,7 +160,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 					Replication: fi.Replication,
 					Collection:  fi.Collection,
 					Ttl:         fi.Ttl,
-					DiskType:  fi.DiskType,
+					DiskType:    fi.DiskType,
 				}
 				ret, err = Assign(master, grpcDialOption, ar)
 				if err != nil {
diff --git a/weed/replication/sink/filersink/fetch_write.go b/weed/replication/sink/filersink/fetch_write.go
index bdd2ba585..6b51a7966 100644
--- a/weed/replication/sink/filersink/fetch_write.go
+++ b/weed/replication/sink/filersink/fetch_write.go
@@ -77,7 +77,7 @@ func (fs *FilerSink) fetchAndWrite(sourceChunk *filer_pb.FileChunk, path string)
 			Collection:  fs.collection,
 			TtlSec:      fs.ttlSec,
 			DataCenter:  fs.dataCenter,
-			DiskType:  fs.diskType,
+			DiskType:    fs.diskType,
 			Path:        path,
 		}
 
diff --git a/weed/replication/sink/filersink/filer_sink.go b/weed/replication/sink/filersink/filer_sink.go
index 579883d62..a69c9dc8e 100644
--- a/weed/replication/sink/filersink/filer_sink.go
+++ b/weed/replication/sink/filersink/filer_sink.go
@@ -23,7 +23,7 @@ type FilerSink struct {
 	replication    string
 	collection     string
 	ttlSec         int32
-	diskType     string
+	diskType       string
 	dataCenter     string
 	grpcDialOption grpc.DialOption
 }
diff --git a/weed/s3api/auth_credentials.go b/weed/s3api/auth_credentials.go
index da0a38dbf..93544b75e 100644
--- a/weed/s3api/auth_credentials.go
+++ b/weed/s3api/auth_credentials.go
@@ -79,7 +79,6 @@ func (iam *IdentityAccessManagement) loadS3ApiConfigurationFromBytes(content []b
 	return nil
 }
 
-
 func (iam *IdentityAccessManagement) loadS3ApiConfiguration(config *iam_pb.S3ApiConfiguration) error {
 	var identities []*Identity
 	for _, ident := range config.Identities {
diff --git a/weed/s3api/s3_constants/s3_actions.go b/weed/s3api/s3_constants/s3_actions.go
index f6056ef78..4e484ac98 100644
--- a/weed/s3api/s3_constants/s3_actions.go
+++ b/weed/s3api/s3_constants/s3_actions.go
@@ -7,4 +7,3 @@ const (
 	ACTION_TAGGING = "Tagging"
 	ACTION_LIST    = "List"
 )
-
diff --git a/weed/server/common.go b/weed/server/common.go
index 545703095..0ce846ed7 100644
--- a/weed/server/common.go
+++ b/weed/server/common.go
@@ -131,7 +131,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
 		Replication: r.FormValue("replication"),
 		Collection:  r.FormValue("collection"),
 		Ttl:         r.FormValue("ttl"),
-		DiskType:  r.FormValue("disk"),
+		DiskType:    r.FormValue("disk"),
 	}
 	assignResult, ae := operation.Assign(masterUrl, grpcDialOption, ar)
 	if ae != nil {
diff --git a/weed/server/filer_grpc_server.go b/weed/server/filer_grpc_server.go
index e8a57261d..7f3012e96 100644
--- a/weed/server/filer_grpc_server.go
+++ b/weed/server/filer_grpc_server.go
@@ -405,7 +405,7 @@ func (fs *FilerServer) Statistics(ctx context.Context, req *filer_pb.StatisticsR
 			Replication: req.Replication,
 			Collection:  req.Collection,
 			Ttl:         req.Ttl,
-			DiskType:  req.DiskType,
+			DiskType:    req.DiskType,
 		})
 		if grpcErr != nil {
 			return grpcErr
diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
index 0cfbeba47..963f1cd11 100644
--- a/weed/server/filer_server_handlers_write_autochunk.go
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -163,7 +163,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 			Replication: so.Replication,
 			Collection:  so.Collection,
 			TtlSec:      so.TtlSeconds,
-			DiskType:  so.DiskType,
+			DiskType:    so.DiskType,
 			Mime:        contentType,
 			Md5:         md5bytes,
 			FileSize:    uint64(chunkOffset),
diff --git a/weed/server/filer_server_handlers_write_cipher.go b/weed/server/filer_server_handlers_write_cipher.go
index f9310bdd2..8334d1618 100644
--- a/weed/server/filer_server_handlers_write_cipher.go
+++ b/weed/server/filer_server_handlers_write_cipher.go
@@ -68,7 +68,7 @@ func (fs *FilerServer) encrypt(ctx context.Context, w http.ResponseWriter, r *ht
 			Replication: so.Replication,
 			Collection:  so.Collection,
 			TtlSec:      so.TtlSeconds,
-			DiskType:  so.DiskType,
+			DiskType:    so.DiskType,
 			Mime:        pu.MimeType,
 			Md5:         util.Base64Md5ToBytes(pu.ContentMd5),
 		},
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index debb21b94..f1d65896a 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -70,7 +70,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 		Collection:         req.Collection,
 		ReplicaPlacement:   replicaPlacement,
 		Ttl:                ttl,
-		DiskType:         diskType,
+		DiskType:           diskType,
 		Prealloacte:        ms.preallocateSize,
 		DataCenter:         req.DataCenter,
 		Rack:               req.Rack,
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 1f340cb11..5b0fe26de 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -174,7 +174,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 		Collection:         r.FormValue("collection"),
 		ReplicaPlacement:   replicaPlacement,
 		Ttl:                ttl,
-		DiskType:         diskType,
+		DiskType:           diskType,
 		Prealloacte:        preallocate,
 		DataCenter:         r.FormValue("dataCenter"),
 		Rack:               r.FormValue("rack"),
diff --git a/weed/server/webdav_server.go b/weed/server/webdav_server.go
index 04b7e0519..6694086af 100644
--- a/weed/server/webdav_server.go
+++ b/weed/server/webdav_server.go
@@ -33,7 +33,7 @@ type WebDavOption struct {
 	BucketsPath      string
 	GrpcDialOption   grpc.DialOption
 	Collection       string
-	DiskType       string
+	DiskType         string
 	Uid              uint32
 	Gid              uint32
 	Cipher           bool
@@ -379,7 +379,7 @@ func (f *WebDavFile) saveDataAsChunk(reader io.Reader, name string, offset int64
 			Count:       1,
 			Replication: "",
 			Collection:  f.fs.option.Collection,
-			DiskType:  f.fs.option.DiskType,
+			DiskType:    f.fs.option.DiskType,
 			Path:        name,
 		}
 
diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index 59303ec55..1539ccb19 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -175,7 +175,7 @@ func moveAwayOneEcVolume(commandEnv *CommandEnv, ecShardInfo *master_pb.VolumeEc
 
 func moveAwayOneNormalVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, vol *master_pb.VolumeInformationMessage, thisNode *Node, otherNodes []*Node, applyChange bool) (hasMoved bool, err error) {
 	sort.Slice(otherNodes, func(i, j int) bool {
-		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount) + otherNodes[i].localVolumeRatio(capacityByMaxSsdVolumeCount) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount) + otherNodes[j].localVolumeRatio(capacityByMaxSsdVolumeCount)
+		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount)+otherNodes[i].localVolumeRatio(capacityByMaxSsdVolumeCount) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount)+otherNodes[j].localVolumeRatio(capacityByMaxSsdVolumeCount)
 	})
 
 	for i := 0; i < len(otherNodes); i++ {
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index c6619b260..271a36ef7 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -19,7 +19,7 @@ import (
 type DiskLocation struct {
 	Directory              string
 	IdxDirectory           string
-	DiskType             DiskType
+	DiskType               DiskType
 	MaxVolumeCount         int
 	OriginalMaxVolumeCount int
 	MinFreeSpacePercent    float32
@@ -43,7 +43,7 @@ func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32
 	location := &DiskLocation{
 		Directory:              dir,
 		IdxDirectory:           idxDir,
-		DiskType:             diskType,
+		DiskType:               diskType,
 		MaxVolumeCount:         maxVolumeCount,
 		OriginalMaxVolumeCount: maxVolumeCount,
 		MinFreeSpacePercent:    minFreeSpacePercent,
@@ -117,7 +117,7 @@ func (l *DiskLocation) loadExistingVolume(fileInfo os.FileInfo, needleMapKind Ne
 		glog.V(0).Infof("new volume %s error %s", volumeName, e)
 		return false
 	}
-	
+
 	l.SetVolume(vid, v)
 
 	size, _, _ := v.FileStat()
@@ -362,4 +362,4 @@ func (l *DiskLocation) GetDiskType() string {
 		return "SSD"
 	}
 	return "HDD"
-}
\ No newline at end of file
+}
diff --git a/weed/storage/volume_info.go b/weed/storage/volume_info.go
index e9ecb500a..9c64c9682 100644
--- a/weed/storage/volume_info.go
+++ b/weed/storage/volume_info.go
@@ -14,7 +14,7 @@ type VolumeInfo struct {
 	Size              uint64
 	ReplicaPlacement  *super_block.ReplicaPlacement
 	Ttl               *needle.TTL
-	DiskType        string
+	DiskType          string
 	Collection        string
 	Version           needle.Version
 	FileCount         int
@@ -41,7 +41,7 @@ func NewVolumeInfo(m *master_pb.VolumeInformationMessage) (vi VolumeInfo, err er
 		ModifiedAtSecond:  m.ModifiedAtSecond,
 		RemoteStorageName: m.RemoteStorageName,
 		RemoteStorageKey:  m.RemoteStorageKey,
-		DiskType:        m.DiskType,
+		DiskType:          m.DiskType,
 	}
 	rp, e := super_block.NewReplicaPlacementFromByte(byte(m.ReplicaPlacement))
 	if e != nil {
@@ -93,7 +93,7 @@ func (vi VolumeInfo) ToVolumeInformationMessage() *master_pb.VolumeInformationMe
 		ModifiedAtSecond:  vi.ModifiedAtSecond,
 		RemoteStorageName: vi.RemoteStorageName,
 		RemoteStorageKey:  vi.RemoteStorageKey,
-		DiskType:        vi.DiskType,
+		DiskType:          vi.DiskType,
 	}
 }
 
diff --git a/weed/storage/volume_loading.go b/weed/storage/volume_loading.go
index 34eee876d..a6efc630d 100644
--- a/weed/storage/volume_loading.go
+++ b/weed/storage/volume_loading.go
@@ -92,7 +92,7 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
 	if err == nil && alsoLoadIndex {
 		// adjust for existing volumes with .idx together with .dat files
 		if v.dirIdx != v.dir {
-			if util.FileExists(v.DataFileName()+".idx") {
+			if util.FileExists(v.DataFileName() + ".idx") {
 				v.dirIdx = v.dir
 			}
 		}
@@ -100,12 +100,12 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
 		if v.noWriteOrDelete {
 			glog.V(0).Infoln("open to read file", v.FileName(".idx"))
 			if indexFile, err = os.OpenFile(v.FileName(".idx"), os.O_RDONLY, 0644); err != nil {
-				return fmt.Errorf("cannot read Volume Index %s: %v",  v.FileName(".idx"), err)
+				return fmt.Errorf("cannot read Volume Index %s: %v", v.FileName(".idx"), err)
 			}
 		} else {
 			glog.V(1).Infoln("open to write file", v.FileName(".idx"))
 			if indexFile, err = os.OpenFile(v.FileName(".idx"), os.O_RDWR|os.O_CREATE, 0644); err != nil {
-				return fmt.Errorf("cannot write Volume Index %s: %v",  v.FileName(".idx"), err)
+				return fmt.Errorf("cannot write Volume Index %s: %v", v.FileName(".idx"), err)
 			}
 		}
 		if v.lastAppendAtNs, err = CheckAndFixVolumeDataIntegrity(v, indexFile); err != nil {
@@ -115,7 +115,7 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
 
 		if v.noWriteOrDelete || v.noWriteCanDelete {
 			if v.nm, err = NewSortedFileNeedleMap(v.IndexFileName(), indexFile); err != nil {
-				glog.V(0).Infof("loading sorted db %s error: %v",  v.FileName(".sdx"), err)
+				glog.V(0).Infof("loading sorted db %s error: %v", v.FileName(".sdx"), err)
 			}
 		} else {
 			switch needleMapKind {
diff --git a/weed/storage/volume_type.go b/weed/storage/volume_type.go
index 05cd6b2c3..3e8d5ffb5 100644
--- a/weed/storage/volume_type.go
+++ b/weed/storage/volume_type.go
@@ -6,7 +6,7 @@ type DiskType string
 
 const (
 	HardDriveType DiskType = ""
-	SsdType                  = "ssd"
+	SsdType                = "ssd"
 )
 
 func ToDiskType(vt string) (diskType DiskType, err error) {
diff --git a/weed/topology/topology_test.go b/weed/topology/topology_test.go
index 92dcb9a22..b7088947c 100644
--- a/weed/topology/topology_test.go
+++ b/weed/topology/topology_test.go
@@ -60,7 +60,7 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 				ReplicaPlacement: uint32(0),
 				Version:          uint32(needle.CurrentVersion),
 				Ttl:              0,
-				DiskType:       "ssd",
+				DiskType:         "ssd",
 			}
 			volumeMessages = append(volumeMessages, volumeMessage)
 		}
@@ -168,7 +168,7 @@ func TestAddRemoveVolume(t *testing.T) {
 		Id:               needle.VolumeId(1),
 		Size:             100,
 		Collection:       "xcollection",
-		DiskType:       "ssd",
+		DiskType:         "ssd",
 		FileCount:        123,
 		DeleteCount:      23,
 		DeletedByteCount: 45,
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index b2f1fe3d5..260013c38 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -27,7 +27,7 @@ type VolumeGrowOption struct {
 	Collection         string
 	ReplicaPlacement   *super_block.ReplicaPlacement
 	Ttl                *needle.TTL
-	DiskType         storage.DiskType
+	DiskType           storage.DiskType
 	Prealloacte        int64
 	DataCenter         string
 	Rack               string
diff --git a/weed/topology/volume_layout.go b/weed/topology/volume_layout.go
index ba30eca49..3b1feefa4 100644
--- a/weed/topology/volume_layout.go
+++ b/weed/topology/volume_layout.go
@@ -103,7 +103,7 @@ func (v *volumesBinaryState) copyState(list *VolumeLocationList) copyState {
 type VolumeLayout struct {
 	rp               *super_block.ReplicaPlacement
 	ttl              *needle.TTL
-	diskType       storage.DiskType
+	diskType         storage.DiskType
 	vid2location     map[needle.VolumeId]*VolumeLocationList
 	writables        []needle.VolumeId   // transient array of writable volume id
 	readonlyVolumes  *volumesBinaryState // readonly volumes
@@ -123,7 +123,7 @@ func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType
 	return &VolumeLayout{
 		rp:               rp,
 		ttl:              ttl,
-		diskType:       diskType,
+		diskType:         diskType,
 		vid2location:     make(map[needle.VolumeId]*VolumeLocationList),
 		writables:        *new([]needle.VolumeId),
 		readonlyVolumes:  NewVolumesBinaryState(readOnlyState, rp, ExistCopies()),
diff --git a/weed/util/config.go b/weed/util/config.go
index 47f433028..94e621e34 100644
--- a/weed/util/config.go
+++ b/weed/util/config.go
@@ -19,11 +19,11 @@ type Configuration interface {
 func LoadConfiguration(configFileName string, required bool) (loaded bool) {
 
 	// find a filer store
-	viper.SetConfigName(configFileName)     // name of config file (without extension)
-	viper.AddConfigPath(".")                // optionally look for config in the working directory
-	viper.AddConfigPath("$HOME/.seaweedfs") // call multiple times to add many search paths
-	viper.AddConfigPath("/usr/local/etc/seaweedfs/")  // search path for bsd-style config directory in
-	viper.AddConfigPath("/etc/seaweedfs/")  // path to look for the config file in
+	viper.SetConfigName(configFileName)              // name of config file (without extension)
+	viper.AddConfigPath(".")                         // optionally look for config in the working directory
+	viper.AddConfigPath("$HOME/.seaweedfs")          // call multiple times to add many search paths
+	viper.AddConfigPath("/usr/local/etc/seaweedfs/") // search path for bsd-style config directory in
+	viper.AddConfigPath("/etc/seaweedfs/")           // path to look for the config file in
 
 	glog.V(1).Infof("Reading %s.toml from %s", configFileName, viper.ConfigFileUsed())
 

From f56e6d231e86ff1ca5fefcda220012ee121c88a5 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 17 Dec 2020 12:46:20 -0800
Subject: [PATCH 018/140] Revert "Merge pull request #1683 from
 qieqieplus/master"

This reverts commit 8cb67952db822ef232dd2701ce78a5486d54b4ea, reversing
changes made to 200e56215a4fdc4ec424f05fb975cdc876d7a2b4.
---
 weed/storage/disk_location.go | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index 271a36ef7..6623c0111 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -101,14 +101,12 @@ func (l *DiskLocation) loadExistingVolume(fileInfo os.FileInfo, needleMapKind Ne
 	}
 
 	// avoid loading one volume more than once
-	l.volumesLock.Lock()
-	if _, found := l.volumes[vid]; found {
-		l.volumesLock.Unlock()
+	l.volumesLock.RLock()
+	_, found := l.volumes[vid]
+	l.volumesLock.RUnlock()
+	if found {
 		glog.V(1).Infof("loaded volume, %v", vid)
 		return true
-	} else {
-		l.volumes[vid] = nil
-		l.volumesLock.Unlock()
 	}
 
 	// load the volume

From f696a2b2a7c7ad519a98295b71b9ed7ae0cfcd20 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 17 Dec 2020 13:25:05 -0800
Subject: [PATCH 019/140] assign volumes based on disk type

---
 weed/server/master_server_handlers_admin.go |  2 +-
 weed/topology/node.go                       | 19 ++++++-------
 weed/topology/volume_growth.go              | 30 ++++++++++-----------
 3 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 5b0fe26de..7b1ec1f87 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -77,7 +77,7 @@ func (ms *MasterServer) volumeGrowHandler(w http.ResponseWriter, r *http.Request
 
 	if count, err = strconv.Atoi(r.FormValue("count")); err == nil {
 		if ms.Topo.AvailableSpaceFor(option) < int64(count*option.ReplicaPlacement.GetCopyCount()) {
-			err = fmt.Errorf("only %d volumes left, not enough for %d", ms.Topo.FreeSpace(), count*option.ReplicaPlacement.GetCopyCount())
+			err = fmt.Errorf("only %d volumes left, not enough for %d", ms.Topo.AvailableSpaceFor(option), count*option.ReplicaPlacement.GetCopyCount())
 		} else {
 			count, err = ms.vg.GrowByCountAndType(ms.grpcDialOption, count, option, ms.Topo)
 		}
diff --git a/weed/topology/node.go b/weed/topology/node.go
index 8f525021f..b5c2680dd 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -18,7 +18,8 @@ type Node interface {
 	Id() NodeId
 	String() string
 	FreeSpace() int64
-	ReserveOneVolume(r int64) (*DataNode, error)
+	AvailableSpaceFor(option *VolumeGrowOption) int64
+	ReserveOneVolume(r int64, option *VolumeGrowOption) (*DataNode, error)
 	UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta int64)
 	UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta int64)
 	UpAdjustVolumeCountDelta(volumeCountDelta int64)
@@ -69,7 +70,7 @@ type NodeImpl struct {
 }
 
 // the first node must satisfy filterFirstNodeFn(), the rest nodes must have one free slot
-func (n *NodeImpl) PickNodesByWeight(numberOfNodes int, filterFirstNodeFn func(dn Node) error) (firstNode Node, restNodes []Node, err error) {
+func (n *NodeImpl) PickNodesByWeight(numberOfNodes int, option *VolumeGrowOption, filterFirstNodeFn func(dn Node) error) (firstNode Node, restNodes []Node, err error) {
 	var totalWeights int64
 	var errs []string
 	n.RLock()
@@ -77,12 +78,12 @@ func (n *NodeImpl) PickNodesByWeight(numberOfNodes int, filterFirstNodeFn func(d
 	candidatesWeights := make([]int64, 0, len(n.children))
 	//pick nodes which has enough free volumes as candidates, and use free volumes number as node weight.
 	for _, node := range n.children {
-		if node.FreeSpace() <= 0 {
+		if node.AvailableSpaceFor(option) <= 0 {
 			continue
 		}
-		totalWeights += node.FreeSpace()
+		totalWeights += node.AvailableSpaceFor(option)
 		candidates = append(candidates, node)
-		candidatesWeights = append(candidatesWeights, node.FreeSpace())
+		candidatesWeights = append(candidatesWeights, node.AvailableSpaceFor(option))
 	}
 	n.RUnlock()
 	if len(candidates) < numberOfNodes {
@@ -183,11 +184,11 @@ func (n *NodeImpl) Parent() Node {
 func (n *NodeImpl) GetValue() interface{} {
 	return n.value
 }
-func (n *NodeImpl) ReserveOneVolume(r int64) (assignedNode *DataNode, err error) {
+func (n *NodeImpl) ReserveOneVolume(r int64, option *VolumeGrowOption) (assignedNode *DataNode, err error) {
 	n.RLock()
 	defer n.RUnlock()
 	for _, node := range n.children {
-		freeSpace := node.FreeSpace()
+		freeSpace := node.AvailableSpaceFor(option)
 		// fmt.Println("r =", r, ", node =", node, ", freeSpace =", freeSpace)
 		if freeSpace <= 0 {
 			continue
@@ -195,11 +196,11 @@ func (n *NodeImpl) ReserveOneVolume(r int64) (assignedNode *DataNode, err error)
 		if r >= freeSpace {
 			r -= freeSpace
 		} else {
-			if node.IsDataNode() && node.FreeSpace() > 0 {
+			if node.IsDataNode() && node.AvailableSpaceFor(option) > 0 {
 				// fmt.Println("vid =", vid, " assigned to node =", node, ", freeSpace =", node.FreeSpace())
 				return node.(*DataNode), nil
 			}
-			assignedNode, err = node.ReserveOneVolume(r)
+			assignedNode, err = node.ReserveOneVolume(r, option)
 			if err == nil {
 				return
 			}
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index 260013c38..1ceca06a5 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -114,21 +114,21 @@ func (vg *VolumeGrowth) findAndGrow(grpcDialOption grpc.DialOption, topo *Topolo
 func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *VolumeGrowOption) (servers []*DataNode, err error) {
 	//find main datacenter and other data centers
 	rp := option.ReplicaPlacement
-	mainDataCenter, otherDataCenters, dc_err := topo.PickNodesByWeight(rp.DiffDataCenterCount+1, func(node Node) error {
+	mainDataCenter, otherDataCenters, dc_err := topo.PickNodesByWeight(rp.DiffDataCenterCount+1, option, func(node Node) error {
 		if option.DataCenter != "" && node.IsDataCenter() && node.Id() != NodeId(option.DataCenter) {
 			return fmt.Errorf("Not matching preferred data center:%s", option.DataCenter)
 		}
 		if len(node.Children()) < rp.DiffRackCount+1 {
 			return fmt.Errorf("Only has %d racks, not enough for %d.", len(node.Children()), rp.DiffRackCount+1)
 		}
-		if node.FreeSpace() < int64(rp.DiffRackCount+rp.SameRackCount+1) {
-			return fmt.Errorf("Free:%d < Expected:%d", node.FreeSpace(), rp.DiffRackCount+rp.SameRackCount+1)
+		if node.AvailableSpaceFor(option) < int64(rp.DiffRackCount+rp.SameRackCount+1) {
+			return fmt.Errorf("Free:%d < Expected:%d", node.AvailableSpaceFor(option), rp.DiffRackCount+rp.SameRackCount+1)
 		}
 		possibleRacksCount := 0
 		for _, rack := range node.Children() {
 			possibleDataNodesCount := 0
 			for _, n := range rack.Children() {
-				if n.FreeSpace() >= 1 {
+				if n.AvailableSpaceFor(option) >= 1 {
 					possibleDataNodesCount++
 				}
 			}
@@ -146,12 +146,12 @@ func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *Volum
 	}
 
 	//find main rack and other racks
-	mainRack, otherRacks, rackErr := mainDataCenter.(*DataCenter).PickNodesByWeight(rp.DiffRackCount+1, func(node Node) error {
+	mainRack, otherRacks, rackErr := mainDataCenter.(*DataCenter).PickNodesByWeight(rp.DiffRackCount+1, option, func(node Node) error {
 		if option.Rack != "" && node.IsRack() && node.Id() != NodeId(option.Rack) {
 			return fmt.Errorf("Not matching preferred rack:%s", option.Rack)
 		}
-		if node.FreeSpace() < int64(rp.SameRackCount+1) {
-			return fmt.Errorf("Free:%d < Expected:%d", node.FreeSpace(), rp.SameRackCount+1)
+		if node.AvailableSpaceFor(option) < int64(rp.SameRackCount+1) {
+			return fmt.Errorf("Free:%d < Expected:%d", node.AvailableSpaceFor(option), rp.SameRackCount+1)
 		}
 		if len(node.Children()) < rp.SameRackCount+1 {
 			// a bit faster way to test free racks
@@ -159,7 +159,7 @@ func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *Volum
 		}
 		possibleDataNodesCount := 0
 		for _, n := range node.Children() {
-			if n.FreeSpace() >= 1 {
+			if n.AvailableSpaceFor(option) >= 1 {
 				possibleDataNodesCount++
 			}
 		}
@@ -173,12 +173,12 @@ func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *Volum
 	}
 
 	//find main rack and other racks
-	mainServer, otherServers, serverErr := mainRack.(*Rack).PickNodesByWeight(rp.SameRackCount+1, func(node Node) error {
+	mainServer, otherServers, serverErr := mainRack.(*Rack).PickNodesByWeight(rp.SameRackCount+1, option, func(node Node) error {
 		if option.DataNode != "" && node.IsDataNode() && node.Id() != NodeId(option.DataNode) {
 			return fmt.Errorf("Not matching preferred data node:%s", option.DataNode)
 		}
-		if node.FreeSpace() < 1 {
-			return fmt.Errorf("Free:%d < Expected:%d", node.FreeSpace(), 1)
+		if node.AvailableSpaceFor(option) < 1 {
+			return fmt.Errorf("Free:%d < Expected:%d", node.AvailableSpaceFor(option), 1)
 		}
 		return nil
 	})
@@ -191,16 +191,16 @@ func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *Volum
 		servers = append(servers, server.(*DataNode))
 	}
 	for _, rack := range otherRacks {
-		r := rand.Int63n(rack.FreeSpace())
-		if server, e := rack.ReserveOneVolume(r); e == nil {
+		r := rand.Int63n(rack.AvailableSpaceFor(option))
+		if server, e := rack.ReserveOneVolume(r, option); e == nil {
 			servers = append(servers, server)
 		} else {
 			return servers, e
 		}
 	}
 	for _, datacenter := range otherDataCenters {
-		r := rand.Int63n(datacenter.FreeSpace())
-		if server, e := datacenter.ReserveOneVolume(r); e == nil {
+		r := rand.Int63n(datacenter.AvailableSpaceFor(option))
+		if server, e := datacenter.ReserveOneVolume(r, option); e == nil {
 			servers = append(servers, server)
 		} else {
 			return servers, e

From 3cdf5945a265ba22ba6f72f8e25b56c0d70f561b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 17 Dec 2020 13:37:00 -0800
Subject: [PATCH 020/140] adjust UI

---
 weed/topology/data_node.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 400e91455..05842f33e 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -190,7 +190,7 @@ func (dn *DataNode) Url() string {
 func (dn *DataNode) ToMap() interface{} {
 	ret := make(map[string]interface{})
 	ret["Url"] = dn.Url()
-	ret["Volumes"] = dn.GetVolumeCount()
+	ret["Volumes"] = dn.GetVolumeCount() + dn.GetSsdVolumeCount()
 	ret["VolumeIds"] = dn.GetVolumeIds()
 	ret["EcShards"] = dn.GetEcShardCount()
 	ret["Max"] = dn.GetMaxVolumeCount()

From d9e8479c06bdcc1819f5d67e11fbef9a3b5741f8 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 17 Dec 2020 13:47:51 -0800
Subject: [PATCH 021/140] adjust UI max count

---
 weed/topology/data_node.go    | 3 +--
 weed/topology/topology_map.go | 6 ++----
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 05842f33e..bf9557ca0 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -193,8 +193,7 @@ func (dn *DataNode) ToMap() interface{} {
 	ret["Volumes"] = dn.GetVolumeCount() + dn.GetSsdVolumeCount()
 	ret["VolumeIds"] = dn.GetVolumeIds()
 	ret["EcShards"] = dn.GetEcShardCount()
-	ret["Max"] = dn.GetMaxVolumeCount()
-	ret["MaxSsd"] = dn.GetMaxSsdVolumeCount()
+	ret["Max"] = dn.GetMaxVolumeCount() + dn.GetMaxSsdVolumeCount()
 	ret["Free"] = dn.FreeSpace()
 	ret["PublicUrl"] = dn.PublicUrl
 	return ret
diff --git a/weed/topology/topology_map.go b/weed/topology/topology_map.go
index eb8990ab2..566fa418f 100644
--- a/weed/topology/topology_map.go
+++ b/weed/topology/topology_map.go
@@ -4,8 +4,7 @@ import "github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 
 func (t *Topology) ToMap() interface{} {
 	m := make(map[string]interface{})
-	m["Max"] = t.GetMaxVolumeCount()
-	m["MaxSsd"] = t.GetMaxSsdVolumeCount()
+	m["Max"] = t.GetMaxVolumeCount() + t.GetMaxSsdVolumeCount()
 	m["Free"] = t.FreeSpace()
 	var dcs []interface{}
 	for _, c := range t.Children() {
@@ -30,8 +29,7 @@ func (t *Topology) ToMap() interface{} {
 
 func (t *Topology) ToVolumeMap() interface{} {
 	m := make(map[string]interface{})
-	m["Max"] = t.GetMaxVolumeCount()
-	m["MaxSsd"] = t.GetMaxSsdVolumeCount()
+	m["Max"] = t.GetMaxVolumeCount() + t.GetMaxSsdVolumeCount()
 	m["Free"] = t.FreeSpace()
 	dcs := make(map[NodeId]interface{})
 	for _, c := range t.Children() {

From b7fef8f6933d80e71867d8642fba7b393061e385 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 18 Dec 2020 10:34:16 -0800
Subject: [PATCH 022/140] fix when a volume server has only hdd volumes

---
 weed/shell/command_volume_balance.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index cebe494e7..9faa71cae 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -270,6 +270,9 @@ func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*
 
 		for i := 0; i < len(nodes)-1; i++ {
 			emptyNode := nodes[i]
+			if capacityFunc(emptyNode.info) == 0 {
+				continue
+			}
 			if !(fullNode.localVolumeRatio(capacityFunc) > idealVolumeRatio && emptyNode.localVolumeNextRatio(capacityFunc) <= idealVolumeRatio) {
 				// no more volume servers with empty slots
 				break

From 2260864b458d33c03376eb789af8053712ae31c8 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 18 Dec 2020 10:39:30 -0800
Subject: [PATCH 023/140] a cleaner fix

---
 weed/shell/command_volume_balance.go | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index 9faa71cae..a57e07827 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -244,9 +244,14 @@ func sortReadOnlyVolumes(volumes []*master_pb.VolumeInformationMessage) {
 
 func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, capacityFunc CapacityFunc, sortCandidatesFn func(volumes []*master_pb.VolumeInformationMessage), applyBalancing bool) (err error) {
 	selectedVolumeCount, volumeMaxCount := 0, 0
+	var nodesWithCapacity []*Node
 	for _, dn := range nodes {
 		selectedVolumeCount += len(dn.selectedVolumes)
-		volumeMaxCount += capacityFunc(dn.info)
+		capacity := capacityFunc(dn.info)
+		if capacity > 0 {
+			nodesWithCapacity = append(nodesWithCapacity, dn)
+		}
+		volumeMaxCount += capacity
 	}
 
 	idealVolumeRatio := divide(selectedVolumeCount, volumeMaxCount)
@@ -257,22 +262,19 @@ func balanceSelectedVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*
 
 	for hasMoved {
 		hasMoved = false
-		sort.Slice(nodes, func(i, j int) bool {
-			return nodes[i].localVolumeRatio(capacityFunc) < nodes[j].localVolumeRatio(capacityFunc)
+		sort.Slice(nodesWithCapacity, func(i, j int) bool {
+			return nodesWithCapacity[i].localVolumeRatio(capacityFunc) < nodesWithCapacity[j].localVolumeRatio(capacityFunc)
 		})
 
-		fullNode := nodes[len(nodes)-1]
+		fullNode := nodesWithCapacity[len(nodesWithCapacity)-1]
 		var candidateVolumes []*master_pb.VolumeInformationMessage
 		for _, v := range fullNode.selectedVolumes {
 			candidateVolumes = append(candidateVolumes, v)
 		}
 		sortCandidatesFn(candidateVolumes)
 
-		for i := 0; i < len(nodes)-1; i++ {
-			emptyNode := nodes[i]
-			if capacityFunc(emptyNode.info) == 0 {
-				continue
-			}
+		for i := 0; i < len(nodesWithCapacity)-1; i++ {
+			emptyNode := nodesWithCapacity[i]
 			if !(fullNode.localVolumeRatio(capacityFunc) > idealVolumeRatio && emptyNode.localVolumeNextRatio(capacityFunc) <= idealVolumeRatio) {
 				// no more volume servers with empty slots
 				break

From db62090f88b6af9d44c7a92f8ccb075e93b3d9a3 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 23 Dec 2020 12:14:51 -0800
Subject: [PATCH 024/140] s3: break loop if error

fix https://github.com/chrislusf/seaweedfs/issues/1701
---
 weed/s3api/s3api_objects_list_handlers.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/s3api/s3api_objects_list_handlers.go b/weed/s3api/s3api_objects_list_handlers.go
index dce2fd6b0..b674f87cd 100644
--- a/weed/s3api/s3api_objects_list_handlers.go
+++ b/weed/s3api/s3api_objects_list_handlers.go
@@ -315,7 +315,7 @@ func (s3a *S3ApiServer) isDirectoryAllEmpty(filerClient filer_pb.SeaweedFilerCli
 	currentDir := parentDir + "/" + name
 	var startFrom string
 	var isExhausted bool
-	for fileCounter == 0 && !isExhausted {
+	for fileCounter == 0 && !isExhausted && err == nil {
 		err = filer_pb.SeaweedList(filerClient, currentDir, "", func(entry *filer_pb.Entry, isLast bool) error {
 			if entry.IsDirectory {
 				subDirs = append(subDirs, entry.Name)

From 132f275d04df3efa925c0d3d071bc927d669f489 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 23 Dec 2020 12:21:21 -0800
Subject: [PATCH 025/140] s3: log errors instead of stopping when checking
 isDirectoryAllEmpty has error

---
 weed/s3api/s3api_objects_list_handlers.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/s3api/s3api_objects_list_handlers.go b/weed/s3api/s3api_objects_list_handlers.go
index b674f87cd..0af099967 100644
--- a/weed/s3api/s3api_objects_list_handlers.go
+++ b/weed/s3api/s3api_objects_list_handlers.go
@@ -265,7 +265,7 @@ func (s3a *S3ApiServer) doListFilerEntries(client filer_pb.SeaweedFilerClient, d
 				} else {
 					var isEmpty bool
 					if isEmpty, err = s3a.isDirectoryAllEmpty(client, dir, entry.Name); err != nil {
-						return
+						glog.Errorf("check empty folder %s: %v", dir, err)
 					}
 					if !isEmpty {
 						eachEntryFn(dir, entry)

From 5138d3954fea88cc2131f0d86b14e3a777de29d7 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 6 Feb 2021 00:09:12 -0800
Subject: [PATCH 026/140] Java 1.6.0 fix filerProxy mode

---
 other/java/client/pom.xml                   | 2 +-
 other/java/client/pom.xml.deploy            | 2 +-
 other/java/client/pom_debug.xml             | 2 +-
 other/java/examples/pom.xml                 | 4 ++--
 other/java/hdfs2/dependency-reduced-pom.xml | 2 +-
 other/java/hdfs2/pom.xml                    | 2 +-
 other/java/hdfs3/dependency-reduced-pom.xml | 2 +-
 other/java/hdfs3/pom.xml                    | 2 +-
 8 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/other/java/client/pom.xml b/other/java/client/pom.xml
index 4606ef5d9..aaffe0aa8 100644
--- a/other/java/client/pom.xml
+++ b/other/java/client/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>com.github.chrislusf</groupId>
     <artifactId>seaweedfs-client</artifactId>
-    <version>1.5.9</version>
+    <version>1.6.0</version>
 
     <parent>
         <groupId>org.sonatype.oss</groupId>
diff --git a/other/java/client/pom.xml.deploy b/other/java/client/pom.xml.deploy
index bc55291fb..f32cdc427 100644
--- a/other/java/client/pom.xml.deploy
+++ b/other/java/client/pom.xml.deploy
@@ -5,7 +5,7 @@
 
     <groupId>com.github.chrislusf</groupId>
     <artifactId>seaweedfs-client</artifactId>
-    <version>1.5.9</version>
+    <version>1.6.0</version>
 
     <parent>
         <groupId>org.sonatype.oss</groupId>
diff --git a/other/java/client/pom_debug.xml b/other/java/client/pom_debug.xml
index 7a9019176..06b8e0ed5 100644
--- a/other/java/client/pom_debug.xml
+++ b/other/java/client/pom_debug.xml
@@ -5,7 +5,7 @@
 
     <groupId>com.github.chrislusf</groupId>
     <artifactId>seaweedfs-client</artifactId>
-    <version>1.5.9</version>
+    <version>1.6.0</version>
 
     <parent>
         <groupId>org.sonatype.oss</groupId>
diff --git a/other/java/examples/pom.xml b/other/java/examples/pom.xml
index 22159f114..eb1e73a92 100644
--- a/other/java/examples/pom.xml
+++ b/other/java/examples/pom.xml
@@ -11,13 +11,13 @@
         <dependency>
             <groupId>com.github.chrislusf</groupId>
             <artifactId>seaweedfs-client</artifactId>
-            <version>1.5.9</version>
+            <version>1.6.0</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>com.github.chrislusf</groupId>
             <artifactId>seaweedfs-hadoop2-client</artifactId>
-            <version>1.5.9</version>
+            <version>1.6.0</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
diff --git a/other/java/hdfs2/dependency-reduced-pom.xml b/other/java/hdfs2/dependency-reduced-pom.xml
index 699a2c241..10b95db45 100644
--- a/other/java/hdfs2/dependency-reduced-pom.xml
+++ b/other/java/hdfs2/dependency-reduced-pom.xml
@@ -301,7 +301,7 @@
     </snapshotRepository>
   </distributionManagement>
   <properties>
-    <seaweedfs.client.version>1.5.9</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
     <hadoop.version>2.9.2</hadoop.version>
   </properties>
 </project>
diff --git a/other/java/hdfs2/pom.xml b/other/java/hdfs2/pom.xml
index d31b5aa5b..48b7750f4 100644
--- a/other/java/hdfs2/pom.xml
+++ b/other/java/hdfs2/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <seaweedfs.client.version>1.5.9</seaweedfs.client.version>
+        <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
         <hadoop.version>2.9.2</hadoop.version>
     </properties>
 
diff --git a/other/java/hdfs3/dependency-reduced-pom.xml b/other/java/hdfs3/dependency-reduced-pom.xml
index 162b1f64d..71a2f739d 100644
--- a/other/java/hdfs3/dependency-reduced-pom.xml
+++ b/other/java/hdfs3/dependency-reduced-pom.xml
@@ -309,7 +309,7 @@
     </snapshotRepository>
   </distributionManagement>
   <properties>
-    <seaweedfs.client.version>1.5.9</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
     <hadoop.version>3.1.1</hadoop.version>
   </properties>
 </project>
diff --git a/other/java/hdfs3/pom.xml b/other/java/hdfs3/pom.xml
index 0a39185fe..ffe2d319a 100644
--- a/other/java/hdfs3/pom.xml
+++ b/other/java/hdfs3/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <seaweedfs.client.version>1.5.9</seaweedfs.client.version>
+        <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
         <hadoop.version>3.1.1</hadoop.version>
     </properties>
 

From 94ea3bd3a56dd16583c33a3baec17a952b58c6bb Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Sun, 7 Feb 2021 09:00:03 +0800
Subject: [PATCH 027/140] renaming NeedleMapType to NeedleMapKind

---
 weed/server/volume_server.go      |  4 ++--
 weed/storage/disk_location.go     |  8 ++++----
 weed/storage/needle_map.go        |  4 ++--
 weed/storage/store.go             | 12 ++++++------
 weed/storage/volume.go            |  4 ++--
 weed/storage/volume_loading.go    |  4 ++--
 weed/storage/volume_read_write.go |  2 +-
 7 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index 468f75890..0443309fb 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -24,7 +24,7 @@ type VolumeServer struct {
 	guard           *security.Guard
 	grpcDialOption  grpc.DialOption
 
-	needleMapKind           storage.NeedleMapType
+	needleMapKind           storage.NeedleMapKind
 	FixJpgOrientation       bool
 	ReadRedirect            bool
 	compactionBytePerSecond int64
@@ -39,7 +39,7 @@ func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	port int, publicUrl string,
 	folders []string, maxCounts []int, minFreeSpacePercents []float32,
 	idxFolder string,
-	needleMapKind storage.NeedleMapType,
+	needleMapKind storage.NeedleMapKind,
 	masterNodes []string, pulseSeconds int,
 	dataCenter string, rack string,
 	whiteList []string,
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index 9b2ab69fe..76eab64a3 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -82,7 +82,7 @@ func getValidVolumeName(basename string) string {
 	return ""
 }
 
-func (l *DiskLocation) loadExistingVolume(fileInfo os.FileInfo, needleMapKind NeedleMapType) bool {
+func (l *DiskLocation) loadExistingVolume(fileInfo os.FileInfo, needleMapKind NeedleMapKind) bool {
 	basename := fileInfo.Name()
 	if fileInfo.IsDir() {
 		return false
@@ -133,7 +133,7 @@ func (l *DiskLocation) loadExistingVolume(fileInfo os.FileInfo, needleMapKind Ne
 	return true
 }
 
-func (l *DiskLocation) concurrentLoadingVolumes(needleMapKind NeedleMapType, concurrency int) {
+func (l *DiskLocation) concurrentLoadingVolumes(needleMapKind NeedleMapKind, concurrency int) {
 
 	task_queue := make(chan os.FileInfo, 10*concurrency)
 	go func() {
@@ -167,7 +167,7 @@ func (l *DiskLocation) concurrentLoadingVolumes(needleMapKind NeedleMapType, con
 
 }
 
-func (l *DiskLocation) loadExistingVolumes(needleMapKind NeedleMapType) {
+func (l *DiskLocation) loadExistingVolumes(needleMapKind NeedleMapKind) {
 
 	l.concurrentLoadingVolumes(needleMapKind, 10)
 	glog.V(0).Infof("Store started on dir: %s with %d volumes max %d", l.Directory, len(l.volumes), l.MaxVolumeCount)
@@ -237,7 +237,7 @@ func (l *DiskLocation) deleteVolumeById(vid needle.VolumeId) (found bool, e erro
 	return
 }
 
-func (l *DiskLocation) LoadVolume(vid needle.VolumeId, needleMapKind NeedleMapType) bool {
+func (l *DiskLocation) LoadVolume(vid needle.VolumeId, needleMapKind NeedleMapKind) bool {
 	if fileInfo, found := l.LocateVolume(vid); found {
 		return l.loadExistingVolume(fileInfo, needleMapKind)
 	}
diff --git a/weed/storage/needle_map.go b/weed/storage/needle_map.go
index 9f331267d..5b41286ea 100644
--- a/weed/storage/needle_map.go
+++ b/weed/storage/needle_map.go
@@ -11,10 +11,10 @@ import (
 	. "github.com/chrislusf/seaweedfs/weed/storage/types"
 )
 
-type NeedleMapType int
+type NeedleMapKind int
 
 const (
-	NeedleMapInMemory      NeedleMapType = iota
+	NeedleMapInMemory      NeedleMapKind = iota
 	NeedleMapLevelDb                     // small memory footprint, 4MB total, 1 write buffer, 3 block buffer
 	NeedleMapLevelDbMedium               // medium memory footprint, 8MB total, 3 write buffer, 5 block buffer
 	NeedleMapLevelDbLarge                // large memory footprint, 12MB total, 4write buffer, 8 block buffer
diff --git a/weed/storage/store.go b/weed/storage/store.go
index ff28be47c..bd66e23f4 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -40,7 +40,7 @@ type Store struct {
 	dataCenter          string // optional informaton, overwriting master setting if exists
 	rack                string // optional information, overwriting master setting if exists
 	connected           bool
-	NeedleMapType       NeedleMapType
+	NeedleMapKind       NeedleMapKind
 	NewVolumesChan      chan master_pb.VolumeShortInformationMessage
 	DeletedVolumesChan  chan master_pb.VolumeShortInformationMessage
 	NewEcShardsChan     chan master_pb.VolumeEcShardInformationMessage
@@ -52,8 +52,8 @@ func (s *Store) String() (str string) {
 	return
 }
 
-func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapType) (s *Store) {
-	s = &Store{grpcDialOption: grpcDialOption, Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapType: needleMapKind}
+func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, minFreeSpacePercents []float32, idxFolder string, needleMapKind NeedleMapKind) (s *Store) {
+	s = &Store{grpcDialOption: grpcDialOption, Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapKind: needleMapKind}
 	s.Locations = make([]*DiskLocation, 0)
 	for i := 0; i < len(dirnames); i++ {
 		location := NewDiskLocation(dirnames[i], maxVolumeCounts[i], minFreeSpacePercents[i], idxFolder)
@@ -69,7 +69,7 @@ func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, di
 
 	return
 }
-func (s *Store) AddVolume(volumeId needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement string, ttlString string, preallocate int64, MemoryMapMaxSizeMb uint32) error {
+func (s *Store) AddVolume(volumeId needle.VolumeId, collection string, needleMapKind NeedleMapKind, replicaPlacement string, ttlString string, preallocate int64, MemoryMapMaxSizeMb uint32) error {
 	rt, e := super_block.NewReplicaPlacementFromString(replicaPlacement)
 	if e != nil {
 		return e
@@ -114,7 +114,7 @@ func (s *Store) FindFreeLocation() (ret *DiskLocation) {
 	}
 	return ret
 }
-func (s *Store) addVolume(vid needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) error {
+func (s *Store) addVolume(vid needle.VolumeId, collection string, needleMapKind NeedleMapKind, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) error {
 	if s.findVolume(vid) != nil {
 		return fmt.Errorf("Volume Id %d already exists!", vid)
 	}
@@ -362,7 +362,7 @@ func (s *Store) MarkVolumeWritable(i needle.VolumeId) error {
 
 func (s *Store) MountVolume(i needle.VolumeId) error {
 	for _, location := range s.Locations {
-		if found := location.LoadVolume(i, s.NeedleMapType); found == true {
+		if found := location.LoadVolume(i, s.NeedleMapKind); found == true {
 			glog.V(0).Infof("mount volume %d", i)
 			v := s.findVolume(i)
 			s.NewVolumesChan <- master_pb.VolumeShortInformationMessage{
diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index 80a74c3e3..d86e25885 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -25,7 +25,7 @@ type Volume struct {
 	Collection         string
 	DataBackend        backend.BackendStorageFile
 	nm                 NeedleMapper
-	needleMapKind      NeedleMapType
+	needleMapKind      NeedleMapKind
 	noWriteOrDelete    bool // if readonly, either noWriteOrDelete or noWriteCanDelete
 	noWriteCanDelete   bool // if readonly, either noWriteOrDelete or noWriteCanDelete
 	noWriteLock        sync.RWMutex
@@ -50,7 +50,7 @@ type Volume struct {
 	lastIoError error
 }
 
-func NewVolume(dirname string, dirIdx string, collection string, id needle.VolumeId, needleMapKind NeedleMapType, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) (v *Volume, e error) {
+func NewVolume(dirname string, dirIdx string, collection string, id needle.VolumeId, needleMapKind NeedleMapKind, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) (v *Volume, e error) {
 	// if replicaPlacement is nil, the superblock will be loaded from disk
 	v = &Volume{dir: dirname, dirIdx: dirIdx, Collection: collection, Id: id, MemoryMapMaxSizeMb: memoryMapMaxSizeMb,
 		asyncRequestsChan: make(chan *needle.AsyncRequest, 128)}
diff --git a/weed/storage/volume_loading.go b/weed/storage/volume_loading.go
index a6efc630d..52a50a98c 100644
--- a/weed/storage/volume_loading.go
+++ b/weed/storage/volume_loading.go
@@ -14,7 +14,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
-func loadVolumeWithoutIndex(dirname string, collection string, id needle.VolumeId, needleMapKind NeedleMapType) (v *Volume, err error) {
+func loadVolumeWithoutIndex(dirname string, collection string, id needle.VolumeId, needleMapKind NeedleMapKind) (v *Volume, err error) {
 	v = &Volume{dir: dirname, Collection: collection, Id: id}
 	v.SuperBlock = super_block.SuperBlock{}
 	v.needleMapKind = needleMapKind
@@ -22,7 +22,7 @@ func loadVolumeWithoutIndex(dirname string, collection string, id needle.VolumeI
 	return
 }
 
-func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind NeedleMapType, preallocate int64) (err error) {
+func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind NeedleMapKind, preallocate int64) (err error) {
 	alreadyHasSuperBlock := false
 
 	hasLoadedVolume := false
diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index f28ee50e6..b40414ad4 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -410,7 +410,7 @@ type VolumeFileScanner interface {
 }
 
 func ScanVolumeFile(dirname string, collection string, id needle.VolumeId,
-	needleMapKind NeedleMapType,
+	needleMapKind NeedleMapKind,
 	volumeFileScanner VolumeFileScanner) (err error) {
 	var v *Volume
 	if v, err = loadVolumeWithoutIndex(dirname, collection, id, needleMapKind); err != nil {

From 7256902fb0c3ac637d40d8ee91508216b42a6d60 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Sun, 7 Feb 2021 12:11:51 +0800
Subject: [PATCH 028/140] fix typo offset.ToAcutalOffset to
 offset.ToActualOffset

---
 .../diff_volume_servers/diff_volume_servers.go   |  2 +-
 weed/command/export.go                           |  2 +-
 weed/server/volume_grpc_copy_incremental.go      |  2 +-
 weed/server/volume_grpc_tail.go                  |  2 +-
 weed/storage/erasure_coding/ec_decoder.go        |  2 +-
 weed/storage/erasure_coding/ec_test.go           |  4 ++--
 weed/storage/erasure_coding/ec_volume.go         |  2 +-
 weed/storage/erasure_coding/ec_volume_test.go    |  6 +++---
 weed/storage/store_ec.go                         |  4 ++--
 weed/storage/types/offset_4bytes.go              |  2 +-
 weed/storage/volume_backup.go                    |  8 ++++----
 weed/storage/volume_checking.go                  |  2 +-
 weed/storage/volume_read_write.go                | 16 ++++++++--------
 weed/storage/volume_vacuum.go                    | 10 +++++-----
 weed/util/chunk_cache/chunk_cache_on_disk.go     |  4 ++--
 15 files changed, 34 insertions(+), 34 deletions(-)

diff --git a/unmaintained/diff_volume_servers/diff_volume_servers.go b/unmaintained/diff_volume_servers/diff_volume_servers.go
index 6107f3d48..27a537617 100644
--- a/unmaintained/diff_volume_servers/diff_volume_servers.go
+++ b/unmaintained/diff_volume_servers/diff_volume_servers.go
@@ -168,7 +168,7 @@ func getVolumeFiles(v uint32, addr string) (map[types.NeedleId]needleState, int6
 				size:  size,
 			}
 		}
-		if actual := offset.ToAcutalOffset(); actual > maxOffset {
+		if actual := offset.ToActualOffset(); actual > maxOffset {
 			maxOffset = actual
 		}
 		return nil
diff --git a/weed/command/export.go b/weed/command/export.go
index 78d75ef52..f100f3af5 100644
--- a/weed/command/export.go
+++ b/weed/command/export.go
@@ -113,7 +113,7 @@ func (scanner *VolumeFileScanner4Export) VisitNeedle(n *needle.Needle, offset in
 	nv, ok := needleMap.Get(n.Id)
 	glog.V(3).Infof("key %d offset %d size %d disk_size %d compressed %v ok %v nv %+v",
 		n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsCompressed(), ok, nv)
-	if *showDeleted && n.Size > 0 || ok && nv.Size.IsValid() && nv.Offset.ToAcutalOffset() == offset {
+	if *showDeleted && n.Size > 0 || ok && nv.Size.IsValid() && nv.Offset.ToActualOffset() == offset {
 		if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
 			glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
 				n.LastModified, newerThanUnix)
diff --git a/weed/server/volume_grpc_copy_incremental.go b/weed/server/volume_grpc_copy_incremental.go
index 6d6c3daa3..82b143c3d 100644
--- a/weed/server/volume_grpc_copy_incremental.go
+++ b/weed/server/volume_grpc_copy_incremental.go
@@ -27,7 +27,7 @@ func (vs *VolumeServer) VolumeIncrementalCopy(req *volume_server_pb.VolumeIncrem
 		return nil
 	}
 
-	startOffset := foundOffset.ToAcutalOffset()
+	startOffset := foundOffset.ToActualOffset()
 
 	buf := make([]byte, 1024*1024*2)
 	return sendFileContent(v.DataBackend, buf, startOffset, int64(stopOffset), stream)
diff --git a/weed/server/volume_grpc_tail.go b/weed/server/volume_grpc_tail.go
index 2dde5b69c..6c039ebf5 100644
--- a/weed/server/volume_grpc_tail.go
+++ b/weed/server/volume_grpc_tail.go
@@ -72,7 +72,7 @@ func sendNeedlesSince(stream volume_server_pb.VolumeServer_VolumeTailSenderServe
 		stream: stream,
 	}
 
-	err = storage.ScanVolumeFileFrom(v.Version(), v.DataBackend, foundOffset.ToAcutalOffset(), scanner)
+	err = storage.ScanVolumeFileFrom(v.Version(), v.DataBackend, foundOffset.ToActualOffset(), scanner)
 
 	return scanner.lastProcessedTimestampNs, err
 
diff --git a/weed/storage/erasure_coding/ec_decoder.go b/weed/storage/erasure_coding/ec_decoder.go
index bc86d9c04..47d3c6550 100644
--- a/weed/storage/erasure_coding/ec_decoder.go
+++ b/weed/storage/erasure_coding/ec_decoder.go
@@ -58,7 +58,7 @@ func FindDatFileSize(dataBaseFileName, indexBaseFileName string) (datSize int64,
 			return nil
 		}
 
-		entryStopOffset := offset.ToAcutalOffset() + needle.GetActualSize(size, version)
+		entryStopOffset := offset.ToActualOffset() + needle.GetActualSize(size, version)
 		if datSize < entryStopOffset {
 			datSize = entryStopOffset
 		}
diff --git a/weed/storage/erasure_coding/ec_test.go b/weed/storage/erasure_coding/ec_test.go
index 63cc2c352..0d48bec02 100644
--- a/weed/storage/erasure_coding/ec_test.go
+++ b/weed/storage/erasure_coding/ec_test.go
@@ -93,7 +93,7 @@ func assertSame(datFile *os.File, datSize int64, ecFiles []*os.File, offset type
 func readDatFile(datFile *os.File, offset types.Offset, size types.Size) ([]byte, error) {
 
 	data := make([]byte, size)
-	n, err := datFile.ReadAt(data, offset.ToAcutalOffset())
+	n, err := datFile.ReadAt(data, offset.ToActualOffset())
 	if err != nil {
 		return nil, fmt.Errorf("failed to ReadAt dat file: %v", err)
 	}
@@ -105,7 +105,7 @@ func readDatFile(datFile *os.File, offset types.Offset, size types.Size) ([]byte
 
 func readEcFile(datSize int64, ecFiles []*os.File, offset types.Offset, size types.Size) (data []byte, err error) {
 
-	intervals := LocateData(largeBlockSize, smallBlockSize, datSize, offset.ToAcutalOffset(), size)
+	intervals := LocateData(largeBlockSize, smallBlockSize, datSize, offset.ToActualOffset(), size)
 
 	for i, interval := range intervals {
 		if d, e := readOneInterval(interval, ecFiles); e != nil {
diff --git a/weed/storage/erasure_coding/ec_volume.go b/weed/storage/erasure_coding/ec_volume.go
index 2183e43d6..a9d08ed0e 100644
--- a/weed/storage/erasure_coding/ec_volume.go
+++ b/weed/storage/erasure_coding/ec_volume.go
@@ -211,7 +211,7 @@ func (ev *EcVolume) LocateEcShardNeedle(needleId types.NeedleId, version needle.
 	shard := ev.Shards[0]
 
 	// calculate the locations in the ec shards
-	intervals = LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, DataShardsCount*shard.ecdFileSize, offset.ToAcutalOffset(), types.Size(needle.GetActualSize(size, version)))
+	intervals = LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, DataShardsCount*shard.ecdFileSize, offset.ToActualOffset(), types.Size(needle.GetActualSize(size, version)))
 
 	return
 }
diff --git a/weed/storage/erasure_coding/ec_volume_test.go b/weed/storage/erasure_coding/ec_volume_test.go
index fe45bf722..747ef4aab 100644
--- a/weed/storage/erasure_coding/ec_volume_test.go
+++ b/weed/storage/erasure_coding/ec_volume_test.go
@@ -35,16 +35,16 @@ func TestPositioning(t *testing.T) {
 		needleId, _ := types.ParseNeedleId(test.needleId)
 		offset, size, err := SearchNeedleFromSortedIndex(ecxFile, fileSize, needleId, nil)
 		assert.Equal(t, nil, err, "SearchNeedleFromSortedIndex")
-		fmt.Printf("offset: %d size: %d\n", offset.ToAcutalOffset(), size)
+		fmt.Printf("offset: %d size: %d\n", offset.ToActualOffset(), size)
 	}
 
 	needleId, _ := types.ParseNeedleId("0f087622")
 	offset, size, err := SearchNeedleFromSortedIndex(ecxFile, fileSize, needleId, nil)
 	assert.Equal(t, nil, err, "SearchNeedleFromSortedIndex")
-	fmt.Printf("offset: %d size: %d\n", offset.ToAcutalOffset(), size)
+	fmt.Printf("offset: %d size: %d\n", offset.ToActualOffset(), size)
 
 	var shardEcdFileSize int64 = 1118830592 // 1024*1024*1024*3
-	intervals := LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, DataShardsCount*shardEcdFileSize, offset.ToAcutalOffset(), types.Size(needle.GetActualSize(size, needle.CurrentVersion)))
+	intervals := LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, DataShardsCount*shardEcdFileSize, offset.ToActualOffset(), types.Size(needle.GetActualSize(size, needle.CurrentVersion)))
 
 	for _, interval := range intervals {
 		shardId, shardOffset := interval.ToShardIdAndOffset(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize)
diff --git a/weed/storage/store_ec.go b/weed/storage/store_ec.go
index 853757ce3..ab4e96634 100644
--- a/weed/storage/store_ec.go
+++ b/weed/storage/store_ec.go
@@ -131,7 +131,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, ErrorDeleted
 			}
 
-			glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToAcutalOffset(), size, intervals)
+			glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToActualOffset(), size, intervals)
 
 			if len(intervals) > 1 {
 				glog.V(3).Infof("ReadEcShardNeedle needle id %s intervals:%+v", n.String(), intervals)
@@ -144,7 +144,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, ErrorDeleted
 			}
 
-			err = n.ReadBytes(bytes, offset.ToAcutalOffset(), size, localEcVolume.Version)
+			err = n.ReadBytes(bytes, offset.ToActualOffset(), size, localEcVolume.Version)
 			if err != nil {
 				return 0, fmt.Errorf("readbytes: %v", err)
 			}
diff --git a/weed/storage/types/offset_4bytes.go b/weed/storage/types/offset_4bytes.go
index d53147e21..5348d5b36 100644
--- a/weed/storage/types/offset_4bytes.go
+++ b/weed/storage/types/offset_4bytes.go
@@ -54,7 +54,7 @@ func ToOffset(offset int64) Offset {
 	return Uint32ToOffset(smaller)
 }
 
-func (offset Offset) ToAcutalOffset() (actualOffset int64) {
+func (offset Offset) ToActualOffset() (actualOffset int64) {
 	return (int64(offset.b0) + int64(offset.b1)<<8 + int64(offset.b2)<<16 + int64(offset.b3)<<24) * int64(NeedlePaddingSize)
 }
 
diff --git a/weed/storage/volume_backup.go b/weed/storage/volume_backup.go
index 9aeb10f69..82ea12a89 100644
--- a/weed/storage/volume_backup.go
+++ b/weed/storage/volume_backup.go
@@ -154,13 +154,13 @@ func (v *Volume) locateLastAppendEntry() (Offset, error) {
 
 func (v *Volume) readAppendAtNs(offset Offset) (uint64, error) {
 
-	n, _, bodyLength, err := needle.ReadNeedleHeader(v.DataBackend, v.SuperBlock.Version, offset.ToAcutalOffset())
+	n, _, bodyLength, err := needle.ReadNeedleHeader(v.DataBackend, v.SuperBlock.Version, offset.ToActualOffset())
 	if err != nil {
-		return 0, fmt.Errorf("ReadNeedleHeader %s [%d,%d): %v", v.DataBackend.Name(), offset.ToAcutalOffset(), offset.ToAcutalOffset()+NeedleHeaderSize, err)
+		return 0, fmt.Errorf("ReadNeedleHeader %s [%d,%d): %v", v.DataBackend.Name(), offset.ToActualOffset(), offset.ToActualOffset()+NeedleHeaderSize, err)
 	}
-	_, err = n.ReadNeedleBody(v.DataBackend, v.SuperBlock.Version, offset.ToAcutalOffset()+NeedleHeaderSize, bodyLength)
+	_, err = n.ReadNeedleBody(v.DataBackend, v.SuperBlock.Version, offset.ToActualOffset()+NeedleHeaderSize, bodyLength)
 	if err != nil {
-		return 0, fmt.Errorf("ReadNeedleBody offset %d, bodyLength %d: %v", offset.ToAcutalOffset(), bodyLength, err)
+		return 0, fmt.Errorf("ReadNeedleBody offset %d, bodyLength %d: %v", offset.ToActualOffset(), bodyLength, err)
 	}
 	return n.AppendAtNs, nil
 
diff --git a/weed/storage/volume_checking.go b/weed/storage/volume_checking.go
index 00e04047f..8d63c39c1 100644
--- a/weed/storage/volume_checking.go
+++ b/weed/storage/volume_checking.go
@@ -58,7 +58,7 @@ func doCheckAndFixVolumeData(v *Volume, indexFile *os.File, indexOffset int64) (
 			return lastAppendAtNs, fmt.Errorf("verifyNeedleIntegrity %s failed: %v", indexFile.Name(), err)
 		}
 	} else {
-		if lastAppendAtNs, err = verifyNeedleIntegrity(v.DataBackend, v.Version(), offset.ToAcutalOffset(), key, size); err != nil {
+		if lastAppendAtNs, err = verifyNeedleIntegrity(v.DataBackend, v.Version(), offset.ToActualOffset(), key, size); err != nil {
 			return lastAppendAtNs, err
 		}
 	}
diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index b40414ad4..07376bc88 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -41,9 +41,9 @@ func (v *Volume) isFileUnchanged(n *needle.Needle) bool {
 	nv, ok := v.nm.Get(n.Id)
 	if ok && !nv.Offset.IsZero() && nv.Size.IsValid() {
 		oldNeedle := new(needle.Needle)
-		err := oldNeedle.ReadData(v.DataBackend, nv.Offset.ToAcutalOffset(), nv.Size, v.Version())
+		err := oldNeedle.ReadData(v.DataBackend, nv.Offset.ToActualOffset(), nv.Size, v.Version())
 		if err != nil {
-			glog.V(0).Infof("Failed to check updated file at offset %d size %d: %v", nv.Offset.ToAcutalOffset(), nv.Size, err)
+			glog.V(0).Infof("Failed to check updated file at offset %d size %d: %v", nv.Offset.ToActualOffset(), nv.Size, err)
 			return false
 		}
 		if oldNeedle.Cookie == n.Cookie && oldNeedle.Checksum == n.Checksum && bytes.Equal(oldNeedle.Data, n.Data) {
@@ -113,7 +113,7 @@ func (v *Volume) syncWrite(n *needle.Needle) (offset uint64, size Size, isUnchan
 	// check whether existing needle cookie matches
 	nv, ok := v.nm.Get(n.Id)
 	if ok {
-		existingNeedle, _, _, existingNeedleReadErr := needle.ReadNeedleHeader(v.DataBackend, v.Version(), nv.Offset.ToAcutalOffset())
+		existingNeedle, _, _, existingNeedleReadErr := needle.ReadNeedleHeader(v.DataBackend, v.Version(), nv.Offset.ToActualOffset())
 		if existingNeedleReadErr != nil {
 			err = fmt.Errorf("reading existing needle: %v", existingNeedleReadErr)
 			return
@@ -136,7 +136,7 @@ func (v *Volume) syncWrite(n *needle.Needle) (offset uint64, size Size, isUnchan
 	v.lastAppendAtNs = n.AppendAtNs
 
 	// add to needle map
-	if !ok || uint64(nv.Offset.ToAcutalOffset()) < offset {
+	if !ok || uint64(nv.Offset.ToActualOffset()) < offset {
 		if err = v.nm.Put(n.Id, ToOffset(int64(offset)), n.Size); err != nil {
 			glog.V(4).Infof("failed to save in needle map %d: %v", n.Id, err)
 		}
@@ -179,7 +179,7 @@ func (v *Volume) doWriteRequest(n *needle.Needle) (offset uint64, size Size, isU
 	// check whether existing needle cookie matches
 	nv, ok := v.nm.Get(n.Id)
 	if ok {
-		existingNeedle, _, _, existingNeedleReadErr := needle.ReadNeedleHeader(v.DataBackend, v.Version(), nv.Offset.ToAcutalOffset())
+		existingNeedle, _, _, existingNeedleReadErr := needle.ReadNeedleHeader(v.DataBackend, v.Version(), nv.Offset.ToActualOffset())
 		if existingNeedleReadErr != nil {
 			err = fmt.Errorf("reading existing needle: %v", existingNeedleReadErr)
 			return
@@ -201,7 +201,7 @@ func (v *Volume) doWriteRequest(n *needle.Needle) (offset uint64, size Size, isU
 	v.lastAppendAtNs = n.AppendAtNs
 
 	// add to needle map
-	if !ok || uint64(nv.Offset.ToAcutalOffset()) < offset {
+	if !ok || uint64(nv.Offset.ToActualOffset()) < offset {
 		if err = v.nm.Put(n.Id, ToOffset(int64(offset)), n.Size); err != nil {
 			glog.V(4).Infof("failed to save in needle map %d: %v", n.Id, err)
 		}
@@ -303,9 +303,9 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 	if readSize == 0 {
 		return 0, nil
 	}
-	err := n.ReadData(v.DataBackend, nv.Offset.ToAcutalOffset(), readSize, v.Version())
+	err := n.ReadData(v.DataBackend, nv.Offset.ToActualOffset(), readSize, v.Version())
 	if err == needle.ErrorSizeMismatch && OffsetSize == 4 {
-		err = n.ReadData(v.DataBackend, nv.Offset.ToAcutalOffset()+int64(MaxPossibleVolumeSize), readSize, v.Version())
+		err = n.ReadData(v.DataBackend, nv.Offset.ToActualOffset()+int64(MaxPossibleVolumeSize), readSize, v.Version())
 	}
 	v.checkReadWriteError(err)
 	if err != nil {
diff --git a/weed/storage/volume_vacuum.go b/weed/storage/volume_vacuum.go
index 5884eca87..c17c9c937 100644
--- a/weed/storage/volume_vacuum.go
+++ b/weed/storage/volume_vacuum.go
@@ -280,11 +280,11 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
 		//updated needle
 		if !increIdxEntry.offset.IsZero() && increIdxEntry.size != 0 && increIdxEntry.size.IsValid() {
 			//even the needle cache in memory is hit, the need_bytes is correct
-			glog.V(4).Infof("file %d offset %d size %d", key, increIdxEntry.offset.ToAcutalOffset(), increIdxEntry.size)
+			glog.V(4).Infof("file %d offset %d size %d", key, increIdxEntry.offset.ToActualOffset(), increIdxEntry.size)
 			var needleBytes []byte
-			needleBytes, err = needle.ReadNeedleBlob(oldDatBackend, increIdxEntry.offset.ToAcutalOffset(), increIdxEntry.size, v.Version())
+			needleBytes, err = needle.ReadNeedleBlob(oldDatBackend, increIdxEntry.offset.ToActualOffset(), increIdxEntry.size, v.Version())
 			if err != nil {
-				return fmt.Errorf("ReadNeedleBlob %s key %d offset %d size %d failed: %v", oldDatFile.Name(), key, increIdxEntry.offset.ToAcutalOffset(), increIdxEntry.size, err)
+				return fmt.Errorf("ReadNeedleBlob %s key %d offset %d size %d failed: %v", oldDatFile.Name(), key, increIdxEntry.offset.ToActualOffset(), increIdxEntry.size, err)
 			}
 			dst.Write(needleBytes)
 			util.Uint32toBytes(idxEntryBytes[8:12], uint32(offset/NeedlePaddingSize))
@@ -339,7 +339,7 @@ func (scanner *VolumeFileScanner4Vacuum) VisitNeedle(n *needle.Needle, offset in
 	}
 	nv, ok := scanner.v.nm.Get(n.Id)
 	glog.V(4).Infoln("needle expected offset ", offset, "ok", ok, "nv", nv)
-	if ok && nv.Offset.ToAcutalOffset() == offset && nv.Size > 0 && nv.Size.IsValid() {
+	if ok && nv.Offset.ToActualOffset() == offset && nv.Size > 0 && nv.Size.IsValid() {
 		if err := scanner.nm.Set(n.Id, ToOffset(scanner.newOffset), n.Size); err != nil {
 			return fmt.Errorf("cannot put needle: %s", err)
 		}
@@ -422,7 +422,7 @@ func copyDataBasedOnIndexFile(srcDatName, srcIdxName, dstDatName, datIdxName str
 		}
 
 		n := new(needle.Needle)
-		err := n.ReadData(srcDatBackend, offset.ToAcutalOffset(), size, version)
+		err := n.ReadData(srcDatBackend, offset.ToActualOffset(), size, version)
 		if err != nil {
 			return nil
 		}
diff --git a/weed/util/chunk_cache/chunk_cache_on_disk.go b/weed/util/chunk_cache/chunk_cache_on_disk.go
index 356dfe188..d724e925e 100644
--- a/weed/util/chunk_cache/chunk_cache_on_disk.go
+++ b/weed/util/chunk_cache/chunk_cache_on_disk.go
@@ -107,9 +107,9 @@ func (v *ChunkCacheVolume) GetNeedle(key types.NeedleId) ([]byte, error) {
 		return nil, storage.ErrorNotFound
 	}
 	data := make([]byte, nv.Size)
-	if readSize, readErr := v.DataBackend.ReadAt(data, nv.Offset.ToAcutalOffset()); readErr != nil {
+	if readSize, readErr := v.DataBackend.ReadAt(data, nv.Offset.ToActualOffset()); readErr != nil {
 		return nil, fmt.Errorf("read %s.dat [%d,%d): %v",
-			v.fileName, nv.Offset.ToAcutalOffset(), nv.Offset.ToAcutalOffset()+int64(nv.Size), readErr)
+			v.fileName, nv.Offset.ToActualOffset(), nv.Offset.ToActualOffset()+int64(nv.Size), readErr)
 	} else {
 		if readSize != int(nv.Size) {
 			return nil, fmt.Errorf("read %d, expected %d", readSize, nv.Size)

From 15c60cbb2660d60d2714d3386731044fcfeac473 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 7 Feb 2021 03:50:01 -0800
Subject: [PATCH 029/140] close the grpc connection after 10 hours

related to https://github.com/chrislusf/seaweedfs/issues/1782
---
 weed/pb/grpc_client_server.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/weed/pb/grpc_client_server.go b/weed/pb/grpc_client_server.go
index 4d78d769f..9ffda9b04 100644
--- a/weed/pb/grpc_client_server.go
+++ b/weed/pb/grpc_client_server.go
@@ -35,8 +35,9 @@ func NewGrpcServer(opts ...grpc.ServerOption) *grpc.Server {
 	var options []grpc.ServerOption
 	options = append(options,
 		grpc.KeepaliveParams(keepalive.ServerParameters{
-			Time:    10 * time.Second, // wait time before ping if no activity
-			Timeout: 20 * time.Second, // ping timeout
+			Time:             10 * time.Second, // wait time before ping if no activity
+			Timeout:          20 * time.Second, // ping timeout
+			MaxConnectionAge: 10 * time.Hour,
 		}),
 		grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
 			MinTime:             60 * time.Second, // min time a client should wait before sending a ping

From 5e4b5109ddaff1fc7c09cc107081c04aaf0056f6 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 7 Feb 2021 22:29:43 -0800
Subject: [PATCH 030/140] 2.24

---
 k8s/seaweedfs/Chart.yaml  | 4 ++--
 k8s/seaweedfs/values.yaml | 2 +-
 weed/util/constants.go    | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/k8s/seaweedfs/Chart.yaml b/k8s/seaweedfs/Chart.yaml
index 4febe5129..b890cc666 100644
--- a/k8s/seaweedfs/Chart.yaml
+++ b/k8s/seaweedfs/Chart.yaml
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.23"
-version: 2.23
+appVersion: "2.24"
+version: 2.24
diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index 168c0dbcd..2b33a6149 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -4,7 +4,7 @@ global:
   registry: ""
   repository: ""
   imageName: chrislusf/seaweedfs
-  # imageTag: "2.23" - started using {.Chart.appVersion}
+  # imageTag: "2.24" - started using {.Chart.appVersion}
   imagePullPolicy: IfNotPresent
   imagePullSecrets: imagepullsecret
   restartPolicy: Always
diff --git a/weed/util/constants.go b/weed/util/constants.go
index ccc0ef1fb..6001ae78e 100644
--- a/weed/util/constants.go
+++ b/weed/util/constants.go
@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 23)
+	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 24)
 	COMMIT  = ""
 )
 

From a83302113214748fe3600510c8835b6d88f3496c Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 7 Feb 2021 23:03:03 -0800
Subject: [PATCH 031/140] fix refactoring left over

---
 weed/storage/types/offset_5bytes.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/storage/types/offset_5bytes.go b/weed/storage/types/offset_5bytes.go
index 05c6d2f39..b6181fc11 100644
--- a/weed/storage/types/offset_5bytes.go
+++ b/weed/storage/types/offset_5bytes.go
@@ -71,7 +71,7 @@ func ToOffset(offset int64) Offset {
 	}
 }
 
-func (offset Offset) ToAcutalOffset() (actualOffset int64) {
+func (offset Offset) ToActualOffset() (actualOffset int64) {
 	return (int64(offset.b0) + int64(offset.b1)<<8 + int64(offset.b2)<<16 + int64(offset.b3)<<24 + int64(offset.b4)<<32) * int64(NeedlePaddingSize)
 }
 

From ad36c7b0d76f870a5cb0c7c68f5c81ec5340a79e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 8 Feb 2021 02:28:45 -0800
Subject: [PATCH 032/140] refactoring: only expose FilerClient class

---
 .../seaweedfs/client/FileChunkManifest.java   | 26 +++++++++----------
 .../java/seaweedfs/client/FilerClient.java    | 24 +++++++----------
 .../seaweedfs/client/SeaweedInputStream.java  | 17 ++++++------
 .../seaweedfs/client/SeaweedOutputStream.java | 18 ++++++-------
 .../java/seaweedfs/client/SeaweedRead.java    | 18 ++++++-------
 .../java/seaweedfs/client/SeaweedWrite.java   | 22 ++++++++--------
 .../seaweedfs/examples/ExampleReadFile.java   |  6 ++---
 .../seaweedfs/examples/ExampleWriteFile.java  | 13 +++++-----
 .../seaweed/hdfs/SeaweedFileSystemStore.java  | 16 +++++-------
 .../hdfs/SeaweedHadoopInputStream.java        |  6 ++---
 .../hdfs/SeaweedHadoopOutputStream.java       |  6 ++---
 .../seaweed/hdfs/SeaweedFileSystemStore.java  | 16 +++++-------
 .../hdfs/SeaweedHadoopInputStream.java        |  6 ++---
 .../hdfs/SeaweedHadoopOutputStream.java       |  6 ++---
 14 files changed, 94 insertions(+), 106 deletions(-)

diff --git a/other/java/client/src/main/java/seaweedfs/client/FileChunkManifest.java b/other/java/client/src/main/java/seaweedfs/client/FileChunkManifest.java
index 3d7da91d5..9b6ba5dfc 100644
--- a/other/java/client/src/main/java/seaweedfs/client/FileChunkManifest.java
+++ b/other/java/client/src/main/java/seaweedfs/client/FileChunkManifest.java
@@ -23,7 +23,7 @@ public class FileChunkManifest {
     }
 
     public static List<FilerProto.FileChunk> resolveChunkManifest(
-            final FilerGrpcClient filerGrpcClient, List<FilerProto.FileChunk> chunks) throws IOException {
+            final FilerClient filerClient, List<FilerProto.FileChunk> chunks) throws IOException {
 
         List<FilerProto.FileChunk> dataChunks = new ArrayList<>();
 
@@ -35,30 +35,30 @@ public class FileChunkManifest {
 
             // IsChunkManifest
             LOG.debug("fetching chunk manifest:{}", chunk);
-            byte[] data = fetchChunk(filerGrpcClient, chunk);
+            byte[] data = fetchChunk(filerClient, chunk);
             FilerProto.FileChunkManifest m = FilerProto.FileChunkManifest.newBuilder().mergeFrom(data).build();
             List<FilerProto.FileChunk> resolvedChunks = new ArrayList<>();
             for (FilerProto.FileChunk t : m.getChunksList()) {
                 // avoid deprecated chunk.getFileId()
                 resolvedChunks.add(t.toBuilder().setFileId(FilerClient.toFileId(t.getFid())).build());
             }
-            dataChunks.addAll(resolveChunkManifest(filerGrpcClient, resolvedChunks));
+            dataChunks.addAll(resolveChunkManifest(filerClient, resolvedChunks));
         }
 
         return dataChunks;
     }
 
-    private static byte[] fetchChunk(final FilerGrpcClient filerGrpcClient, FilerProto.FileChunk chunk) throws IOException {
+    private static byte[] fetchChunk(final FilerClient filerClient, FilerProto.FileChunk chunk) throws IOException {
 
         String vid = "" + chunk.getFid().getVolumeId();
-        FilerProto.Locations locations = filerGrpcClient.vidLocations.get(vid);
+        FilerProto.Locations locations = filerClient.vidLocations.get(vid);
         if (locations == null) {
             FilerProto.LookupVolumeRequest.Builder lookupRequest = FilerProto.LookupVolumeRequest.newBuilder();
             lookupRequest.addVolumeIds(vid);
-            FilerProto.LookupVolumeResponse lookupResponse = filerGrpcClient
+            FilerProto.LookupVolumeResponse lookupResponse = filerClient
                     .getBlockingStub().lookupVolume(lookupRequest.build());
             locations = lookupResponse.getLocationsMapMap().get(vid);
-            filerGrpcClient.vidLocations.put(vid, locations);
+            filerClient.vidLocations.put(vid, locations);
             LOG.debug("fetchChunk vid:{} locations:{}", vid, locations);
         }
 
@@ -74,7 +74,7 @@ public class FileChunkManifest {
         byte[] chunkData = SeaweedRead.chunkCache.getChunk(chunkView.fileId);
         if (chunkData == null) {
             LOG.debug("doFetchFullChunkData:{}", chunkView);
-            chunkData = SeaweedRead.doFetchFullChunkData(filerGrpcClient, chunkView, locations);
+            chunkData = SeaweedRead.doFetchFullChunkData(filerClient, chunkView, locations);
         }
         if (chunk.getIsChunkManifest()){
             LOG.debug("chunk {} size {}", chunkView.fileId, chunkData.length);
@@ -86,7 +86,7 @@ public class FileChunkManifest {
     }
 
     public static List<FilerProto.FileChunk> maybeManifestize(
-            final FilerGrpcClient filerGrpcClient, List<FilerProto.FileChunk> inputChunks, String parentDirectory) throws IOException {
+            final FilerClient filerClient, List<FilerProto.FileChunk> inputChunks, String parentDirectory) throws IOException {
         // the return variable
         List<FilerProto.FileChunk> chunks = new ArrayList<>();
 
@@ -101,7 +101,7 @@ public class FileChunkManifest {
 
         int remaining = dataChunks.size();
         for (int i = 0; i + mergeFactor < dataChunks.size(); i += mergeFactor) {
-            FilerProto.FileChunk chunk = mergeIntoManifest(filerGrpcClient, dataChunks.subList(i, i + mergeFactor), parentDirectory);
+            FilerProto.FileChunk chunk = mergeIntoManifest(filerClient, dataChunks.subList(i, i + mergeFactor), parentDirectory);
             chunks.add(chunk);
             remaining -= mergeFactor;
         }
@@ -113,7 +113,7 @@ public class FileChunkManifest {
         return chunks;
     }
 
-    private static FilerProto.FileChunk mergeIntoManifest(final FilerGrpcClient filerGrpcClient, List<FilerProto.FileChunk> dataChunks, String parentDirectory) throws IOException {
+    private static FilerProto.FileChunk mergeIntoManifest(final FilerClient filerClient, List<FilerProto.FileChunk> dataChunks, String parentDirectory) throws IOException {
         // create and serialize the manifest
         dataChunks = FilerClient.beforeEntrySerialization(dataChunks);
         FilerProto.FileChunkManifest.Builder m = FilerProto.FileChunkManifest.newBuilder().addAllChunks(dataChunks);
@@ -127,8 +127,8 @@ public class FileChunkManifest {
         }
 
         FilerProto.FileChunk.Builder manifestChunk = SeaweedWrite.writeChunk(
-                filerGrpcClient.getReplication(),
-                filerGrpcClient,
+                filerClient.getReplication(),
+                filerClient,
                 minOffset,
                 data, 0, data.length, parentDirectory);
         manifestChunk.setIsChunkManifest(true);
diff --git a/other/java/client/src/main/java/seaweedfs/client/FilerClient.java b/other/java/client/src/main/java/seaweedfs/client/FilerClient.java
index 7338d5bee..58269d41f 100644
--- a/other/java/client/src/main/java/seaweedfs/client/FilerClient.java
+++ b/other/java/client/src/main/java/seaweedfs/client/FilerClient.java
@@ -11,18 +11,12 @@ import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 
-public class FilerClient {
+public class FilerClient extends FilerGrpcClient {
 
     private static final Logger LOG = LoggerFactory.getLogger(FilerClient.class);
 
-    private final FilerGrpcClient filerGrpcClient;
-
     public FilerClient(String host, int grpcPort) {
-        filerGrpcClient = new FilerGrpcClient(host, grpcPort);
-    }
-
-    public FilerClient(FilerGrpcClient filerGrpcClient) {
-        this.filerGrpcClient = filerGrpcClient;
+        super(host, grpcPort);
     }
 
     public static String toFileId(FilerProto.FileId fid) {
@@ -236,7 +230,7 @@ public class FilerClient {
     }
 
     public List<FilerProto.Entry> listEntries(String path, String entryPrefix, String lastEntryName, int limit, boolean includeLastEntry) {
-        Iterator<FilerProto.ListEntriesResponse> iter = filerGrpcClient.getBlockingStub().listEntries(FilerProto.ListEntriesRequest.newBuilder()
+        Iterator<FilerProto.ListEntriesResponse> iter = this.getBlockingStub().listEntries(FilerProto.ListEntriesRequest.newBuilder()
                 .setDirectory(path)
                 .setPrefix(entryPrefix)
                 .setStartFromFileName(lastEntryName)
@@ -253,7 +247,7 @@ public class FilerClient {
 
     public FilerProto.Entry lookupEntry(String directory, String entryName) {
         try {
-            FilerProto.Entry entry = filerGrpcClient.getBlockingStub().lookupDirectoryEntry(
+            FilerProto.Entry entry = this.getBlockingStub().lookupDirectoryEntry(
                     FilerProto.LookupDirectoryEntryRequest.newBuilder()
                             .setDirectory(directory)
                             .setName(entryName)
@@ -274,7 +268,7 @@ public class FilerClient {
     public boolean createEntry(String parent, FilerProto.Entry entry) {
         try {
             FilerProto.CreateEntryResponse createEntryResponse =
-                    filerGrpcClient.getBlockingStub().createEntry(FilerProto.CreateEntryRequest.newBuilder()
+                    this.getBlockingStub().createEntry(FilerProto.CreateEntryRequest.newBuilder()
                             .setDirectory(parent)
                             .setEntry(entry)
                             .build());
@@ -291,7 +285,7 @@ public class FilerClient {
 
     public boolean updateEntry(String parent, FilerProto.Entry entry) {
         try {
-            filerGrpcClient.getBlockingStub().updateEntry(FilerProto.UpdateEntryRequest.newBuilder()
+            this.getBlockingStub().updateEntry(FilerProto.UpdateEntryRequest.newBuilder()
                     .setDirectory(parent)
                     .setEntry(entry)
                     .build());
@@ -304,7 +298,7 @@ public class FilerClient {
 
     public boolean deleteEntry(String parent, String entryName, boolean isDeleteFileChunk, boolean isRecursive, boolean ignoreRecusiveError) {
         try {
-            filerGrpcClient.getBlockingStub().deleteEntry(FilerProto.DeleteEntryRequest.newBuilder()
+            this.getBlockingStub().deleteEntry(FilerProto.DeleteEntryRequest.newBuilder()
                     .setDirectory(parent)
                     .setName(entryName)
                     .setIsDeleteData(isDeleteFileChunk)
@@ -320,7 +314,7 @@ public class FilerClient {
 
     public boolean atomicRenameEntry(String oldParent, String oldName, String newParent, String newName) {
         try {
-            filerGrpcClient.getBlockingStub().atomicRenameEntry(FilerProto.AtomicRenameEntryRequest.newBuilder()
+            this.getBlockingStub().atomicRenameEntry(FilerProto.AtomicRenameEntryRequest.newBuilder()
                     .setOldDirectory(oldParent)
                     .setOldName(oldName)
                     .setNewDirectory(newParent)
@@ -334,7 +328,7 @@ public class FilerClient {
     }
 
     public Iterator<FilerProto.SubscribeMetadataResponse> watch(String prefix, String clientName, long sinceNs) {
-        return filerGrpcClient.getBlockingStub().subscribeMetadata(FilerProto.SubscribeMetadataRequest.newBuilder()
+        return this.getBlockingStub().subscribeMetadata(FilerProto.SubscribeMetadataRequest.newBuilder()
                 .setPathPrefix(prefix)
                 .setClientName(clientName)
                 .setSinceNs(sinceNs)
diff --git a/other/java/client/src/main/java/seaweedfs/client/SeaweedInputStream.java b/other/java/client/src/main/java/seaweedfs/client/SeaweedInputStream.java
index 8b26c242c..4e40ce1b6 100644
--- a/other/java/client/src/main/java/seaweedfs/client/SeaweedInputStream.java
+++ b/other/java/client/src/main/java/seaweedfs/client/SeaweedInputStream.java
@@ -16,7 +16,7 @@ public class SeaweedInputStream extends InputStream {
     private static final Logger LOG = LoggerFactory.getLogger(SeaweedInputStream.class);
     private static final IOException EXCEPTION_STREAM_IS_CLOSED = new IOException("Stream is closed!");
 
-    private final FilerGrpcClient filerGrpcClient;
+    private final FilerClient filerClient;
     private final String path;
     private final FilerProto.Entry entry;
     private final List<SeaweedRead.VisibleInterval> visibleIntervalList;
@@ -27,32 +27,31 @@ public class SeaweedInputStream extends InputStream {
     private boolean closed = false;
 
     public SeaweedInputStream(
-            final FilerGrpcClient filerGrpcClient,
+            final FilerClient filerClient,
             final String fullpath) throws IOException {
-        this.filerGrpcClient = filerGrpcClient;
         this.path = fullpath;
-        FilerClient filerClient = new FilerClient(filerGrpcClient);
+        this.filerClient = filerClient;
         this.entry = filerClient.lookupEntry(
                 SeaweedOutputStream.getParentDirectory(fullpath),
                 SeaweedOutputStream.getFileName(fullpath));
         this.contentLength = SeaweedRead.fileSize(entry);
 
-        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerGrpcClient, entry.getChunksList());
+        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerClient, entry.getChunksList());
 
         LOG.debug("new path:{} entry:{} visibleIntervalList:{}", path, entry, visibleIntervalList);
 
     }
 
     public SeaweedInputStream(
-            final FilerGrpcClient filerGrpcClient,
+            final FilerClient filerClient,
             final String path,
             final FilerProto.Entry entry) throws IOException {
-        this.filerGrpcClient = filerGrpcClient;
+        this.filerClient = filerClient;
         this.path = path;
         this.entry = entry;
         this.contentLength = SeaweedRead.fileSize(entry);
 
-        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerGrpcClient, entry.getChunksList());
+        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerClient, entry.getChunksList());
 
         LOG.debug("new path:{} entry:{} visibleIntervalList:{}", path, entry, visibleIntervalList);
 
@@ -110,7 +109,7 @@ public class SeaweedInputStream extends InputStream {
         if (start+len <= entry.getContent().size()) {
             entry.getContent().substring(start, start+len).copyTo(buf);
         } else {
-            bytesRead = SeaweedRead.read(this.filerGrpcClient, this.visibleIntervalList, this.position, buf, SeaweedRead.fileSize(entry));
+            bytesRead = SeaweedRead.read(this.filerClient, this.visibleIntervalList, this.position, buf, SeaweedRead.fileSize(entry));
         }
 
         if (bytesRead > Integer.MAX_VALUE) {
diff --git a/other/java/client/src/main/java/seaweedfs/client/SeaweedOutputStream.java b/other/java/client/src/main/java/seaweedfs/client/SeaweedOutputStream.java
index 92dc59f61..b73e99e69 100644
--- a/other/java/client/src/main/java/seaweedfs/client/SeaweedOutputStream.java
+++ b/other/java/client/src/main/java/seaweedfs/client/SeaweedOutputStream.java
@@ -15,7 +15,7 @@ public class SeaweedOutputStream extends OutputStream {
 
     private static final Logger LOG = LoggerFactory.getLogger(SeaweedOutputStream.class);
     protected final boolean supportFlush = true;
-    private final FilerGrpcClient filerGrpcClient;
+    private final FilerClient filerClient;
     private final String path;
     private final int bufferSize;
     private final int maxConcurrentRequestCount;
@@ -33,17 +33,17 @@ public class SeaweedOutputStream extends OutputStream {
     private long outputIndex;
     private String replication = "000";
 
-    public SeaweedOutputStream(FilerGrpcClient filerGrpcClient, final String fullpath) {
-        this(filerGrpcClient, fullpath, "000");
+    public SeaweedOutputStream(FilerClient filerClient, final String fullpath) {
+        this(filerClient, fullpath, "000");
     }
 
-    public SeaweedOutputStream(FilerGrpcClient filerGrpcClient, final String fullpath, final String replication) {
-        this(filerGrpcClient, fullpath, null, 0, 8 * 1024 * 1024, "000");
+    public SeaweedOutputStream(FilerClient filerClient, final String fullpath, final String replication) {
+        this(filerClient, fullpath, null, 0, 8 * 1024 * 1024, "000");
     }
 
-    public SeaweedOutputStream(FilerGrpcClient filerGrpcClient, final String path, FilerProto.Entry.Builder entry,
+    public SeaweedOutputStream(FilerClient filerClient, final String path, FilerProto.Entry.Builder entry,
                                final long position, final int bufferSize, final String replication) {
-        this.filerGrpcClient = filerGrpcClient;
+        this.filerClient = filerClient;
         this.replication = replication;
         this.path = path;
         this.position = position;
@@ -109,7 +109,7 @@ public class SeaweedOutputStream extends OutputStream {
 
     private synchronized void flushWrittenBytesToServiceInternal(final long offset) throws IOException {
         try {
-            SeaweedWrite.writeMeta(filerGrpcClient, getParentDirectory(path), entry);
+            SeaweedWrite.writeMeta(filerClient, getParentDirectory(path), entry);
         } catch (Exception ex) {
             throw new IOException(ex);
         }
@@ -225,7 +225,7 @@ public class SeaweedOutputStream extends OutputStream {
         }
         final Future<Void> job = completionService.submit(() -> {
             // System.out.println(path + " is going to save [" + (writePosition) + "," + ((writePosition) + bytesLength) + ")");
-            SeaweedWrite.writeData(entry, replication, filerGrpcClient, writePosition, bufferToWrite.array(), bufferToWrite.position(), bufferToWrite.limit(), path);
+            SeaweedWrite.writeData(entry, replication, filerClient, writePosition, bufferToWrite.array(), bufferToWrite.position(), bufferToWrite.limit(), path);
             // System.out.println(path + " saved [" + (writePosition) + "," + ((writePosition) + bytesLength) + ")");
             ByteBufferPool.release(bufferToWrite);
             return null;
diff --git a/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java b/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java
index e55c5b7aa..384636601 100644
--- a/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java
+++ b/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java
@@ -23,7 +23,7 @@ public class SeaweedRead {
     static VolumeIdCache volumeIdCache = new VolumeIdCache(4 * 1024);
 
     // returns bytesRead
-    public static long read(FilerGrpcClient filerGrpcClient, List<VisibleInterval> visibleIntervals,
+    public static long read(FilerClient filerClient, List<VisibleInterval> visibleIntervals,
                             final long position, final ByteBuffer buf, final long fileSize) throws IOException {
 
         List<ChunkView> chunkViews = viewFromVisibles(visibleIntervals, position, buf.remaining());
@@ -42,7 +42,7 @@ public class SeaweedRead {
         }
 
         if (lookupRequest.getVolumeIdsCount() > 0) {
-            FilerProto.LookupVolumeResponse lookupResponse = filerGrpcClient
+            FilerProto.LookupVolumeResponse lookupResponse = filerClient
                     .getBlockingStub().lookupVolume(lookupRequest.build());
             Map<String, FilerProto.Locations> vid2Locations = lookupResponse.getLocationsMapMap();
             for (Map.Entry<String, FilerProto.Locations> entry : vid2Locations.entrySet()) {
@@ -71,7 +71,7 @@ public class SeaweedRead {
                 return 0;
             }
 
-            int len = readChunkView(filerGrpcClient, startOffset, buf, chunkView, locations);
+            int len = readChunkView(filerClient, startOffset, buf, chunkView, locations);
 
             LOG.debug("read [{},{}) {} size {}", startOffset, startOffset + len, chunkView.fileId, chunkView.size);
 
@@ -93,12 +93,12 @@ public class SeaweedRead {
         return readCount;
     }
 
-    private static int readChunkView(FilerGrpcClient filerGrpcClient, long startOffset, ByteBuffer buf, ChunkView chunkView, FilerProto.Locations locations) throws IOException {
+    private static int readChunkView(FilerClient filerClient, long startOffset, ByteBuffer buf, ChunkView chunkView, FilerProto.Locations locations) throws IOException {
 
         byte[] chunkData = chunkCache.getChunk(chunkView.fileId);
 
         if (chunkData == null) {
-            chunkData = doFetchFullChunkData(filerGrpcClient, chunkView, locations);
+            chunkData = doFetchFullChunkData(filerClient, chunkView, locations);
             chunkCache.setChunk(chunkView.fileId, chunkData);
         }
 
@@ -110,13 +110,13 @@ public class SeaweedRead {
         return len;
     }
 
-    public static byte[] doFetchFullChunkData(FilerGrpcClient filerGrpcClient, ChunkView chunkView, FilerProto.Locations locations) throws IOException {
+    public static byte[] doFetchFullChunkData(FilerClient filerClient, ChunkView chunkView, FilerProto.Locations locations) throws IOException {
 
         byte[] data = null;
         IOException lastException = null;
         for (long waitTime = 1000L; waitTime < 10 * 1000; waitTime += waitTime / 2) {
             for (FilerProto.Location location : locations.getLocationsList()) {
-                String url = filerGrpcClient.getChunkUrl(chunkView.fileId, location.getUrl(), location.getPublicUrl());
+                String url = filerClient.getChunkUrl(chunkView.fileId, location.getUrl(), location.getPublicUrl());
                 try {
                     data = doFetchOneFullChunkData(chunkView, url);
                     lastException = null;
@@ -221,9 +221,9 @@ public class SeaweedRead {
     }
 
     public static List<VisibleInterval> nonOverlappingVisibleIntervals(
-            final FilerGrpcClient filerGrpcClient, List<FilerProto.FileChunk> chunkList) throws IOException {
+            final FilerClient filerClient, List<FilerProto.FileChunk> chunkList) throws IOException {
 
-        chunkList = FileChunkManifest.resolveChunkManifest(filerGrpcClient, chunkList);
+        chunkList = FileChunkManifest.resolveChunkManifest(filerClient, chunkList);
 
         FilerProto.FileChunk[] chunks = chunkList.toArray(new FilerProto.FileChunk[0]);
         Arrays.sort(chunks, new Comparator<FilerProto.FileChunk>() {
diff --git a/other/java/client/src/main/java/seaweedfs/client/SeaweedWrite.java b/other/java/client/src/main/java/seaweedfs/client/SeaweedWrite.java
index db3cc3931..f8c0c76b6 100644
--- a/other/java/client/src/main/java/seaweedfs/client/SeaweedWrite.java
+++ b/other/java/client/src/main/java/seaweedfs/client/SeaweedWrite.java
@@ -23,29 +23,29 @@ public class SeaweedWrite {
 
     public static void writeData(FilerProto.Entry.Builder entry,
                                  final String replication,
-                                 final FilerGrpcClient filerGrpcClient,
+                                 final FilerClient filerClient,
                                  final long offset,
                                  final byte[] bytes,
                                  final long bytesOffset, final long bytesLength,
                                  final String path) throws IOException {
         FilerProto.FileChunk.Builder chunkBuilder = writeChunk(
-                replication, filerGrpcClient, offset, bytes, bytesOffset, bytesLength, path);
+                replication, filerClient, offset, bytes, bytesOffset, bytesLength, path);
         synchronized (entry) {
             entry.addChunks(chunkBuilder);
         }
     }
 
     public static FilerProto.FileChunk.Builder writeChunk(final String replication,
-                                                          final FilerGrpcClient filerGrpcClient,
+                                                          final FilerClient filerClient,
                                                           final long offset,
                                                           final byte[] bytes,
                                                           final long bytesOffset,
                                                           final long bytesLength,
                                                           final String path) throws IOException {
-        FilerProto.AssignVolumeResponse response = filerGrpcClient.getBlockingStub().assignVolume(
+        FilerProto.AssignVolumeResponse response = filerClient.getBlockingStub().assignVolume(
                 FilerProto.AssignVolumeRequest.newBuilder()
-                        .setCollection(filerGrpcClient.getCollection())
-                        .setReplication(replication == null ? filerGrpcClient.getReplication() : replication)
+                        .setCollection(filerClient.getCollection())
+                        .setReplication(replication == null ? filerClient.getReplication() : replication)
                         .setDataCenter("")
                         .setTtlSec(0)
                         .setPath(path)
@@ -53,11 +53,11 @@ public class SeaweedWrite {
         String fileId = response.getFileId();
         String auth = response.getAuth();
 
-        String targetUrl = filerGrpcClient.getChunkUrl(fileId, response.getUrl(), response.getPublicUrl());
+        String targetUrl = filerClient.getChunkUrl(fileId, response.getUrl(), response.getPublicUrl());
 
         ByteString cipherKeyString = com.google.protobuf.ByteString.EMPTY;
         byte[] cipherKey = null;
-        if (filerGrpcClient.isCipher()) {
+        if (filerClient.isCipher()) {
             cipherKey = genCipherKey();
             cipherKeyString = ByteString.copyFrom(cipherKey);
         }
@@ -75,15 +75,15 @@ public class SeaweedWrite {
                 .setCipherKey(cipherKeyString);
     }
 
-    public static void writeMeta(final FilerGrpcClient filerGrpcClient,
+    public static void writeMeta(final FilerClient filerClient,
                                  final String parentDirectory,
                                  final FilerProto.Entry.Builder entry) throws IOException {
 
         synchronized (entry) {
-            List<FilerProto.FileChunk> chunks = FileChunkManifest.maybeManifestize(filerGrpcClient, entry.getChunksList(), parentDirectory);
+            List<FilerProto.FileChunk> chunks = FileChunkManifest.maybeManifestize(filerClient, entry.getChunksList(), parentDirectory);
             entry.clearChunks();
             entry.addAllChunks(chunks);
-            filerGrpcClient.getBlockingStub().createEntry(
+            filerClient.getBlockingStub().createEntry(
                     FilerProto.CreateEntryRequest.newBuilder()
                             .setDirectory(parentDirectory)
                             .setEntry(entry)
diff --git a/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleReadFile.java b/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleReadFile.java
index bd73df802..d2eb94135 100644
--- a/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleReadFile.java
+++ b/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleReadFile.java
@@ -1,6 +1,6 @@
 package com.seaweedfs.examples;
 
-import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.FilerClient;
 import seaweedfs.client.SeaweedInputStream;
 
 import java.io.FileInputStream;
@@ -13,7 +13,7 @@ public class ExampleReadFile {
 
     public static void main(String[] args) throws IOException {
 
-        FilerGrpcClient filerGrpcClient = new FilerGrpcClient("localhost", 18888);
+        FilerClient filerClient = new FilerClient("localhost", 18888);
 
         long startTime = System.currentTimeMillis();
         parseZip("/Users/chris/tmp/test.zip");
@@ -23,7 +23,7 @@ public class ExampleReadFile {
         long localProcessTime = startTime2 - startTime;
 
         SeaweedInputStream seaweedInputStream = new SeaweedInputStream(
-                filerGrpcClient, "/test.zip");
+                filerClient, "/test.zip");
         parseZip(seaweedInputStream);
 
         long swProcessTime = System.currentTimeMillis() - startTime2;
diff --git a/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleWriteFile.java b/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleWriteFile.java
index 228a3c0b7..26b74028f 100644
--- a/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleWriteFile.java
+++ b/other/java/examples/src/main/java/com/seaweedfs/examples/ExampleWriteFile.java
@@ -1,6 +1,6 @@
 package com.seaweedfs.examples;
 
-import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.FilerClient;
 import seaweedfs.client.SeaweedInputStream;
 import seaweedfs.client.SeaweedOutputStream;
 
@@ -13,15 +13,14 @@ public class ExampleWriteFile {
 
     public static void main(String[] args) throws IOException {
 
-        FilerGrpcClient filerGrpcClient = new FilerGrpcClient("localhost", 18888);
+        FilerClient filerClient = new FilerClient("localhost", 18888);
 
-        SeaweedInputStream seaweedInputStream = new SeaweedInputStream(
-                filerGrpcClient, "/test.zip");
-        unZipFiles(filerGrpcClient, seaweedInputStream);
+        SeaweedInputStream seaweedInputStream = new SeaweedInputStream(filerClient, "/test.zip");
+        unZipFiles(filerClient, seaweedInputStream);
 
     }
 
-    public static void unZipFiles(FilerGrpcClient filerGrpcClient, InputStream is) throws IOException {
+    public static void unZipFiles(FilerClient filerClient, InputStream is) throws IOException {
         ZipInputStream zin = new ZipInputStream(is);
         ZipEntry ze;
         while ((ze = zin.getNextEntry()) != null) {
@@ -34,7 +33,7 @@ public class ExampleWriteFile {
                 continue;
             }
 
-            SeaweedOutputStream seaweedOutputStream = new SeaweedOutputStream(filerGrpcClient, "/test/"+filename);
+            SeaweedOutputStream seaweedOutputStream = new SeaweedOutputStream(filerClient, "/test/"+filename);
             byte[] bytesIn = new byte[16 * 1024];
             int read = 0;
             while ((read = zin.read(bytesIn))!=-1) {
diff --git a/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java b/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
index 8147f3efe..f4e8c9349 100644
--- a/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
+++ b/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
@@ -24,27 +24,25 @@ public class SeaweedFileSystemStore {
 
     private static final Logger LOG = LoggerFactory.getLogger(SeaweedFileSystemStore.class);
 
-    private FilerGrpcClient filerGrpcClient;
     private FilerClient filerClient;
     private Configuration conf;
 
     public SeaweedFileSystemStore(String host, int port, Configuration conf) {
         int grpcPort = 10000 + port;
-        filerGrpcClient = new FilerGrpcClient(host, grpcPort);
-        filerClient = new FilerClient(filerGrpcClient);
+        filerClient = new FilerClient(host, grpcPort);
         this.conf = conf;
         String volumeServerAccessMode = this.conf.get(FS_SEAWEED_VOLUME_SERVER_ACCESS, "direct");
         if (volumeServerAccessMode.equals("publicUrl")) {
-            filerGrpcClient.setAccessVolumeServerByPublicUrl();
+            filerClient.setAccessVolumeServerByPublicUrl();
         } else if (volumeServerAccessMode.equals("filerProxy")) {
-            filerGrpcClient.setAccessVolumeServerByFilerProxy();
+            filerClient.setAccessVolumeServerByFilerProxy();
         }
 
     }
 
     public void close() {
         try {
-            this.filerGrpcClient.shutdown();
+            this.filerClient.shutdown();
         } catch (InterruptedException e) {
             e.printStackTrace();
         }
@@ -219,10 +217,10 @@ public class SeaweedFileSystemStore {
                     .clearGroupName()
                     .addAllGroupName(Arrays.asList(userGroupInformation.getGroupNames()))
                 );
-            SeaweedWrite.writeMeta(filerGrpcClient, getParentDirectory(path), entry);
+            SeaweedWrite.writeMeta(filerClient, getParentDirectory(path), entry);
         }
 
-        return new SeaweedHadoopOutputStream(filerGrpcClient, path.toString(), entry, writePosition, bufferSize, replication);
+        return new SeaweedHadoopOutputStream(filerClient, path.toString(), entry, writePosition, bufferSize, replication);
 
     }
 
@@ -236,7 +234,7 @@ public class SeaweedFileSystemStore {
             throw new FileNotFoundException("read non-exist file " + path);
         }
 
-        return new SeaweedHadoopInputStream(filerGrpcClient,
+        return new SeaweedHadoopInputStream(filerClient,
             statistics,
             path.toUri().getPath(),
             entry);
diff --git a/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java b/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java
index dd9bf4032..f26eae597 100644
--- a/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java
+++ b/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java
@@ -5,7 +5,7 @@ package seaweed.hdfs;
 import org.apache.hadoop.fs.ByteBufferReadable;
 import org.apache.hadoop.fs.FSInputStream;
 import org.apache.hadoop.fs.FileSystem.Statistics;
-import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.FilerClient;
 import seaweedfs.client.FilerProto;
 import seaweedfs.client.SeaweedInputStream;
 
@@ -19,11 +19,11 @@ public class SeaweedHadoopInputStream extends FSInputStream implements ByteBuffe
     private final Statistics statistics;
 
     public SeaweedHadoopInputStream(
-            final FilerGrpcClient filerGrpcClient,
+            final FilerClient filerClient,
             final Statistics statistics,
             final String path,
             final FilerProto.Entry entry) throws IOException {
-        this.seaweedInputStream = new SeaweedInputStream(filerGrpcClient, path, entry);
+        this.seaweedInputStream = new SeaweedInputStream(filerClient, path, entry);
         this.statistics = statistics;
     }
 
diff --git a/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java b/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java
index f7a6225d8..da5b56bbc 100644
--- a/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java
+++ b/other/java/hdfs2/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java
@@ -2,15 +2,15 @@ package seaweed.hdfs;
 
 // adapted from org.apache.hadoop.fs.azurebfs.services.AbfsOutputStream
 
-import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.FilerClient;
 import seaweedfs.client.FilerProto;
 import seaweedfs.client.SeaweedOutputStream;
 
 public class SeaweedHadoopOutputStream extends SeaweedOutputStream {
 
-    public SeaweedHadoopOutputStream(FilerGrpcClient filerGrpcClient, final String path, FilerProto.Entry.Builder entry,
+    public SeaweedHadoopOutputStream(FilerClient filerClient, final String path, FilerProto.Entry.Builder entry,
                                      final long position, final int bufferSize, final String replication) {
-        super(filerGrpcClient, path.toString(), entry, position, bufferSize, replication);
+        super(filerClient, path, entry, position, bufferSize, replication);
     }
 
 }
diff --git a/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java b/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
index 8147f3efe..f4e8c9349 100644
--- a/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
+++ b/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedFileSystemStore.java
@@ -24,27 +24,25 @@ public class SeaweedFileSystemStore {
 
     private static final Logger LOG = LoggerFactory.getLogger(SeaweedFileSystemStore.class);
 
-    private FilerGrpcClient filerGrpcClient;
     private FilerClient filerClient;
     private Configuration conf;
 
     public SeaweedFileSystemStore(String host, int port, Configuration conf) {
         int grpcPort = 10000 + port;
-        filerGrpcClient = new FilerGrpcClient(host, grpcPort);
-        filerClient = new FilerClient(filerGrpcClient);
+        filerClient = new FilerClient(host, grpcPort);
         this.conf = conf;
         String volumeServerAccessMode = this.conf.get(FS_SEAWEED_VOLUME_SERVER_ACCESS, "direct");
         if (volumeServerAccessMode.equals("publicUrl")) {
-            filerGrpcClient.setAccessVolumeServerByPublicUrl();
+            filerClient.setAccessVolumeServerByPublicUrl();
         } else if (volumeServerAccessMode.equals("filerProxy")) {
-            filerGrpcClient.setAccessVolumeServerByFilerProxy();
+            filerClient.setAccessVolumeServerByFilerProxy();
         }
 
     }
 
     public void close() {
         try {
-            this.filerGrpcClient.shutdown();
+            this.filerClient.shutdown();
         } catch (InterruptedException e) {
             e.printStackTrace();
         }
@@ -219,10 +217,10 @@ public class SeaweedFileSystemStore {
                     .clearGroupName()
                     .addAllGroupName(Arrays.asList(userGroupInformation.getGroupNames()))
                 );
-            SeaweedWrite.writeMeta(filerGrpcClient, getParentDirectory(path), entry);
+            SeaweedWrite.writeMeta(filerClient, getParentDirectory(path), entry);
         }
 
-        return new SeaweedHadoopOutputStream(filerGrpcClient, path.toString(), entry, writePosition, bufferSize, replication);
+        return new SeaweedHadoopOutputStream(filerClient, path.toString(), entry, writePosition, bufferSize, replication);
 
     }
 
@@ -236,7 +234,7 @@ public class SeaweedFileSystemStore {
             throw new FileNotFoundException("read non-exist file " + path);
         }
 
-        return new SeaweedHadoopInputStream(filerGrpcClient,
+        return new SeaweedHadoopInputStream(filerClient,
             statistics,
             path.toUri().getPath(),
             entry);
diff --git a/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java b/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java
index dd9bf4032..f26eae597 100644
--- a/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java
+++ b/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopInputStream.java
@@ -5,7 +5,7 @@ package seaweed.hdfs;
 import org.apache.hadoop.fs.ByteBufferReadable;
 import org.apache.hadoop.fs.FSInputStream;
 import org.apache.hadoop.fs.FileSystem.Statistics;
-import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.FilerClient;
 import seaweedfs.client.FilerProto;
 import seaweedfs.client.SeaweedInputStream;
 
@@ -19,11 +19,11 @@ public class SeaweedHadoopInputStream extends FSInputStream implements ByteBuffe
     private final Statistics statistics;
 
     public SeaweedHadoopInputStream(
-            final FilerGrpcClient filerGrpcClient,
+            final FilerClient filerClient,
             final Statistics statistics,
             final String path,
             final FilerProto.Entry entry) throws IOException {
-        this.seaweedInputStream = new SeaweedInputStream(filerGrpcClient, path, entry);
+        this.seaweedInputStream = new SeaweedInputStream(filerClient, path, entry);
         this.statistics = statistics;
     }
 
diff --git a/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java b/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java
index f65aef619..1740312fe 100644
--- a/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java
+++ b/other/java/hdfs3/src/main/java/seaweed/hdfs/SeaweedHadoopOutputStream.java
@@ -4,7 +4,7 @@ package seaweed.hdfs;
 
 import org.apache.hadoop.fs.StreamCapabilities;
 import org.apache.hadoop.fs.Syncable;
-import seaweedfs.client.FilerGrpcClient;
+import seaweedfs.client.FilerClient;
 import seaweedfs.client.FilerProto;
 import seaweedfs.client.SeaweedOutputStream;
 
@@ -13,9 +13,9 @@ import java.util.Locale;
 
 public class SeaweedHadoopOutputStream extends SeaweedOutputStream implements Syncable, StreamCapabilities {
 
-    public SeaweedHadoopOutputStream(FilerGrpcClient filerGrpcClient, final String path, FilerProto.Entry.Builder entry,
+    public SeaweedHadoopOutputStream(FilerClient filerClient, final String path, FilerProto.Entry.Builder entry,
                                      final long position, final int bufferSize, final String replication) {
-        super(filerGrpcClient, path, entry, position, bufferSize, replication);
+        super(filerClient, path, entry, position, bufferSize, replication);
     }
 
     /**

From 5b1def9080b44913280af52821798a9850b42eff Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 8 Feb 2021 02:42:01 -0800
Subject: [PATCH 033/140] Java: 1.6.1 refacoring API

---
 other/java/client/pom.xml                   | 2 +-
 other/java/client/pom.xml.deploy            | 2 +-
 other/java/client/pom_debug.xml             | 2 +-
 other/java/examples/pom.xml                 | 4 ++--
 other/java/hdfs2/dependency-reduced-pom.xml | 2 +-
 other/java/hdfs2/pom.xml                    | 2 +-
 other/java/hdfs3/dependency-reduced-pom.xml | 2 +-
 other/java/hdfs3/pom.xml                    | 2 +-
 8 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/other/java/client/pom.xml b/other/java/client/pom.xml
index aaffe0aa8..056904ebe 100644
--- a/other/java/client/pom.xml
+++ b/other/java/client/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>com.github.chrislusf</groupId>
     <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.0</version>
+    <version>1.6.1</version>
 
     <parent>
         <groupId>org.sonatype.oss</groupId>
diff --git a/other/java/client/pom.xml.deploy b/other/java/client/pom.xml.deploy
index f32cdc427..69b900017 100644
--- a/other/java/client/pom.xml.deploy
+++ b/other/java/client/pom.xml.deploy
@@ -5,7 +5,7 @@
 
     <groupId>com.github.chrislusf</groupId>
     <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.0</version>
+    <version>1.6.1</version>
 
     <parent>
         <groupId>org.sonatype.oss</groupId>
diff --git a/other/java/client/pom_debug.xml b/other/java/client/pom_debug.xml
index 06b8e0ed5..1447401b7 100644
--- a/other/java/client/pom_debug.xml
+++ b/other/java/client/pom_debug.xml
@@ -5,7 +5,7 @@
 
     <groupId>com.github.chrislusf</groupId>
     <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.0</version>
+    <version>1.6.1</version>
 
     <parent>
         <groupId>org.sonatype.oss</groupId>
diff --git a/other/java/examples/pom.xml b/other/java/examples/pom.xml
index eb1e73a92..2456113d0 100644
--- a/other/java/examples/pom.xml
+++ b/other/java/examples/pom.xml
@@ -11,13 +11,13 @@
         <dependency>
             <groupId>com.github.chrislusf</groupId>
             <artifactId>seaweedfs-client</artifactId>
-            <version>1.6.0</version>
+            <version>1.6.1</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>com.github.chrislusf</groupId>
             <artifactId>seaweedfs-hadoop2-client</artifactId>
-            <version>1.6.0</version>
+            <version>1.6.1</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
diff --git a/other/java/hdfs2/dependency-reduced-pom.xml b/other/java/hdfs2/dependency-reduced-pom.xml
index 10b95db45..0680d86bb 100644
--- a/other/java/hdfs2/dependency-reduced-pom.xml
+++ b/other/java/hdfs2/dependency-reduced-pom.xml
@@ -301,7 +301,7 @@
     </snapshotRepository>
   </distributionManagement>
   <properties>
-    <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.1</seaweedfs.client.version>
     <hadoop.version>2.9.2</hadoop.version>
   </properties>
 </project>
diff --git a/other/java/hdfs2/pom.xml b/other/java/hdfs2/pom.xml
index 48b7750f4..897477066 100644
--- a/other/java/hdfs2/pom.xml
+++ b/other/java/hdfs2/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
+        <seaweedfs.client.version>1.6.1</seaweedfs.client.version>
         <hadoop.version>2.9.2</hadoop.version>
     </properties>
 
diff --git a/other/java/hdfs3/dependency-reduced-pom.xml b/other/java/hdfs3/dependency-reduced-pom.xml
index 71a2f739d..2b4a1a494 100644
--- a/other/java/hdfs3/dependency-reduced-pom.xml
+++ b/other/java/hdfs3/dependency-reduced-pom.xml
@@ -309,7 +309,7 @@
     </snapshotRepository>
   </distributionManagement>
   <properties>
-    <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.1</seaweedfs.client.version>
     <hadoop.version>3.1.1</hadoop.version>
   </properties>
 </project>
diff --git a/other/java/hdfs3/pom.xml b/other/java/hdfs3/pom.xml
index ffe2d319a..49ff8f926 100644
--- a/other/java/hdfs3/pom.xml
+++ b/other/java/hdfs3/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <seaweedfs.client.version>1.6.0</seaweedfs.client.version>
+        <seaweedfs.client.version>1.6.1</seaweedfs.client.version>
         <hadoop.version>3.1.1</hadoop.version>
     </properties>
 

From 9e06ef66b9bcca1c2cefc5cd38c34a20cb912c41 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Tue, 9 Feb 2021 09:44:28 +0800
Subject: [PATCH 034/140] fix renaming for 5bytes

---
 weed/storage/types/offset_5bytes.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/storage/types/offset_5bytes.go b/weed/storage/types/offset_5bytes.go
index 05c6d2f39..b6181fc11 100644
--- a/weed/storage/types/offset_5bytes.go
+++ b/weed/storage/types/offset_5bytes.go
@@ -71,7 +71,7 @@ func ToOffset(offset int64) Offset {
 	}
 }
 
-func (offset Offset) ToAcutalOffset() (actualOffset int64) {
+func (offset Offset) ToActualOffset() (actualOffset int64) {
 	return (int64(offset.b0) + int64(offset.b1)<<8 + int64(offset.b2)<<16 + int64(offset.b3)<<24 + int64(offset.b4)<<32) * int64(NeedlePaddingSize)
 }
 

From b6fba0c03feeb39c7db36c05da70280f1ca270fb Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 09:43:55 +0200
Subject: [PATCH 035/140] filer: make k8s service ClusterIP type

easier to patch/expose ( probably LoadBalancer will be better, but that also works)
---
 k8s/seaweedfs/templates/filer-service-client.yaml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/k8s/seaweedfs/templates/filer-service-client.yaml b/k8s/seaweedfs/templates/filer-service-client.yaml
index 65568418f..f509086e3 100644
--- a/k8s/seaweedfs/templates/filer-service-client.yaml
+++ b/k8s/seaweedfs/templates/filer-service-client.yaml
@@ -10,7 +10,6 @@ metadata:
     monitoring: "true"
 {{- end }}
 spec:
-  clusterIP: None
   ports:
   - name: "swfs-filer"
     port: {{ .Values.filer.port }}
@@ -28,4 +27,4 @@ spec:
 {{- end }}
   selector:
     app: {{ template "seaweedfs.name" . }}
-    component: filer
\ No newline at end of file
+    component: filer

From 2646f5a7847ffc2117861eaaab749a63f5c471e5 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 09:46:21 +0200
Subject: [PATCH 036/140] cronjob: fix and update

enable/disable fix.replication & support for CollectionPrefix filtering
fix toleration and nodeSelector helm templating issues
---
 k8s/seaweedfs/templates/cronjob.yaml | 15 +++++++++------
 k8s/seaweedfs/values.yaml            | 16 ++++++++++------
 2 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/k8s/seaweedfs/templates/cronjob.yaml b/k8s/seaweedfs/templates/cronjob.yaml
index 6f4ed8c70..4caf4bad1 100644
--- a/k8s/seaweedfs/templates/cronjob.yaml
+++ b/k8s/seaweedfs/templates/cronjob.yaml
@@ -15,13 +15,13 @@ spec:
       backoffLimit: 2
       template:
         spec:
-          {{- with .Values.cronjob.nodeSelector }}
+          {{- if .Values.cronjob.nodeSelector }}
           nodeSelector:
-          {{- toYaml . | nindent 12 }}
+            {{ tpl .Values.cronjob.nodeSelector . | indent 12 | trim }}
           {{- end }}
-          {{- with .Values.cronjob.tolerations }}
+          {{- if .Values.cronjob.tolerations }}
           tolerations:
-          {{- toYaml . | nindent 12 }}
+            {{ tpl .Values.cronjob.tolerations . | nindent 12 | trim }}
           {{- end }}
           restartPolicy: OnFailure
           containers:
@@ -36,10 +36,13 @@ spec:
                 - |
                   set -ex
                   echo -e "lock\n\
-                  volume.balance -force\
+                  volume.balance -force \
                   {{ if .Values.volume.dataCenter }} -dataCenter {{ .Values.volume.dataCenter }}{{ end }}\
                   {{ if .Values.cronjob.collection }} -collection {{ .Values.cronjob.collection }}{{ end }}\n\
-                  volume.fix.replication\nunlock\n" | \
+                  {{- if .Values.cronjob.enableFixReplication }}
+                  volume.fix.replication -collectionPattern={{ .Values.cronjob.collectionPattern }} \n\
+                  {{- end }}
+                  unlock\n" | \
                   /usr/bin/weed shell \
                   {{- if .Values.cronjob.master }}
                   -master {{ .Values.cronjob.master }} \
diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index 2b33a6149..301c9f236 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -359,17 +359,21 @@ s3:
     storageClass: ""
 
 cronjob:
-  enabled: false
+  enabled: true
+  master: "seaweedfs-master:9333"
+  filer: "seaweedfs-filer-client:8888"
+  tolerations: ""
+  nodeSelector: |
+    sw-backend: "true"
+  replication:
+    enable: true
+    collectionPattern: ""
   schedule: "*/7 * * * *"
   resources: null
   # balance all volumes among volume servers
   # ALL|EACH_COLLECTION|<collection_name>
   collection: ""
-  master: ""
-  filer: ""
-  tolerations: ""
-  nodeSelector: |
-    sw-backend: "true"
+
 
 certificates:
   commonName: "SeaweedFS CA"

From 91a3314d36445c84d337963147d0ed30bde21599 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 09:55:58 +0200
Subject: [PATCH 037/140] filer/s3: enable/disable s3 and peers

enable/disable s3 pods
launch s3 in filer pod, to reduce network/latency between pods when using s3
disable/enable the peers option (with external backend DB is not needed)
added option to create s3 admin+read users
---
 .../templates/filer-statefulset.yaml          | 29 +++++++++++++++++++
 k8s/seaweedfs/templates/s3-deployment.yaml    | 10 +++++++
 k8s/seaweedfs/templates/s3-service.yaml       | 10 +++----
 k8s/seaweedfs/values.yaml                     | 18 +++++++++++-
 4 files changed, 61 insertions(+), 6 deletions(-)

diff --git a/k8s/seaweedfs/templates/filer-statefulset.yaml b/k8s/seaweedfs/templates/filer-statefulset.yaml
index d284e9992..fc1253479 100644
--- a/k8s/seaweedfs/templates/filer-statefulset.yaml
+++ b/k8s/seaweedfs/templates/filer-statefulset.yaml
@@ -133,14 +133,36 @@ spec:
               -encryptVolumeData \
               {{- end }}
               -ip=${POD_IP} \
+              {{- if .Values.filer.enable_peers }}
               {{- if gt (.Values.filer.replicas | int) 1 }}
               -peers=$(echo -n "{{ range $index := until (.Values.filer.replicas | int) }}${SEAWEEDFS_FULLNAME}-filer-{{ $index }}.${SEAWEEDFS_FULLNAME}-filer:{{ $.Values.filer.port }}{{ if lt $index (sub ($.Values.filer.replicas | int) 1) }},{{ end }}{{ end }}" | sed "s/$HOSTNAME.${SEAWEEDFS_FULLNAME}-filer:{{ $.Values.filer.port }}//" | sed 's/,$//; 's/^,//'; s/,,/,/;' )  \
               {{- end }}
+              {{- end }}
+              {{- if .Values.filer.s3.enabled }}
+              -s3 \
+              -s3.port={{ .Values.filer.s3.port }} \
+              {{- if .Values.filer.s3.domainName }}
+              -s3.domainName={{ .Values.filer.s3.domainName }} \
+              {{- end }}
+              {{- if .Values.global.enableSecurity }}
+              -s3.cert.file=/usr/local/share/ca-certificates/client/tls.crt \
+              -s3.key.file=/usr/local/share/ca-certificates/client/tls.key \
+              {{- end }}
+              {{- if .Values.filer.s3.allowEmptyFolder }}
+              -s3.allowEmptyFolder={{ .Values.filer.s3.allowEmptyFolder }} \
+              {{- end }}
+              {{- if .Values.filer.s3.enableAuth }}
+              -s3.config=/etc/sw/seaweedfs_s3_config \
+              {{- end }}
+              {{- end }}
               -master={{ range $index := until (.Values.master.replicas | int) }}${SEAWEEDFS_FULLNAME}-master-{{ $index }}.${SEAWEEDFS_FULLNAME}-master:{{ $.Values.master.port }}{{ if lt $index (sub ($.Values.master.replicas | int) 1) }},{{ end }}{{ end }}
           {{- if or (.Values.global.enableSecurity) (.Values.filer.extraVolumeMounts) }}    
           volumeMounts:
             - name: seaweedfs-filer-log-volume
               mountPath: "/logs/"
+            - mountPath: /etc/sw
+              name: config-users
+              readOnly: true
             {{- if .Values.global.enableSecurity }}
             - name: security-config
               readOnly: true
@@ -198,6 +220,13 @@ spec:
           hostPath:
             path: /storage/logs/seaweedfs/filer
             type: DirectoryOrCreate
+        - name: db-schema-config-volume
+          configMap:
+            name: seaweedfs-db-init-config
+        - name: config-users
+          secret:
+            defaultMode: 420
+            secretName: seaweedfs-s3-secret
         {{- if .Values.global.enableSecurity }}
         - name: security-config
           configMap:
diff --git a/k8s/seaweedfs/templates/s3-deployment.yaml b/k8s/seaweedfs/templates/s3-deployment.yaml
index ed01758b8..b513e937b 100644
--- a/k8s/seaweedfs/templates/s3-deployment.yaml
+++ b/k8s/seaweedfs/templates/s3-deployment.yaml
@@ -90,10 +90,16 @@ spec:
               {{- if .Values.s3.allowEmptyFolder }}
               -allowEmptyFolder={{ .Values.s3.allowEmptyFolder }} \
               {{- end }}
+              {{- if .Values.s3.enableAuth }}
+              -config=/etc/sw/seaweedfs_s3_config \
+              {{- end }}
               -filer={{ template "seaweedfs.name" . }}-filer-client:{{ .Values.filer.port }}
           volumeMounts:
             - name: logs
               mountPath: "/logs/"
+            - mountPath: /etc/sw
+              name: config-users
+              readOnly: true
             {{- if .Values.global.enableSecurity }}
             - name: security-config
               readOnly: true
@@ -144,6 +150,10 @@ spec:
             {{ tpl .Values.s3.resources . | nindent 12 | trim }}
           {{- end }}
       volumes:
+        - name: config-users
+          secret:
+            defaultMode: 420
+            secretName: seaweedfs-s3-secret
         {{- if eq .Values.s3.logs.type "hostPath" }}
         - name: logs
           hostPath:
diff --git a/k8s/seaweedfs/templates/s3-service.yaml b/k8s/seaweedfs/templates/s3-service.yaml
index 4a68c7976..122b33298 100644
--- a/k8s/seaweedfs/templates/s3-service.yaml
+++ b/k8s/seaweedfs/templates/s3-service.yaml
@@ -9,15 +9,15 @@ metadata:
 spec:
   ports:
   - name: "swfs-s3"
-    port: {{ .Values.s3.port }}
-    targetPort: {{ .Values.s3.port }}
+    port: {{ if .Values.s3.enabled }}{{ .Values.s3.port }}{{ else }}{{ .Values.filer.s3.port }}{{ end }}
+    targetPort: {{ if .Values.s3.enabled }}{{ .Values.s3.port }}{{ else }}{{ .Values.filer.s3.port }}{{ end }}
     protocol: TCP
-{{- if .Values.s3.metricsPort }}
-  - name: "swfs-s3-metrics"
+{{- if and .Values.s3.enabled .Values.s3.metricsPort }}
+  - name: "metrics"
     port: {{ .Values.s3.metricsPort }}
     targetPort: {{ .Values.s3.metricsPort }}
     protocol: TCP
 {{- end }}
   selector:
     app: {{ template "seaweedfs.name" . }}
-    component: s3
\ No newline at end of file
+    component: {{ if .Values.s3.enabled }}s3{{ else }}filer{{ end }}
diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index 301c9f236..43783d3b7 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -229,6 +229,8 @@ filer:
   maxMB: null
   # encrypt data on volume servers
   encryptVolumeData: false
+  # enable peers sync metadata, for leveldb (localdb for filer but with sync across)
+  enable_peers: false
 
   # Whether proxy or redirect to volume server during file GET request
   redirectOnRead: false
@@ -311,8 +313,19 @@ filer:
     # directories under this folder will be automatically creating a separate bucket
     WEED_FILER_BUCKETS_FOLDER: "/buckets"
 
+  s3:
+    enabled: true
+    port: 8333
+    #allow empty folders
+    allowEmptyFolder: false
+    # Suffix of the host name, {bucket}.{domainName}
+    domainName: ""
+    # enable user & permission to s3 (need to inject to all services)
+    enableAuth: false
+    skipAuthSecretCreation: false
+
 s3:
-  enabled: true
+  enabled: false
   repository: null
   imageName: null
   imageTag: null
@@ -323,6 +336,9 @@ s3:
   loggingOverrideLevel: null
   #allow empty folders
   allowEmptyFolder: true
+  # enable user & permission to s3 (need to inject to all services)
+  enableAuth: false
+  skipAuthSecretCreation: false
 
   # Suffix of the host name, {bucket}.{domainName}
   domainName: ""

From 259c66d978f7d296325fcc20ab7eceb127c377c8 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 09:57:09 +0200
Subject: [PATCH 038/140] volume: set minFreeSpacePercent to 7%

when k8s node have less than 5% free space, the k8s will start killing pods...
---
 k8s/seaweedfs/values.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index 43783d3b7..273ab21ad 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -136,7 +136,7 @@ volume:
   # limit file size to avoid out of memory, default 256mb
   fileSizeLimitMB: null
   # minimum free disk space(in percents). If free disk space lower this value - all volumes marks as ReadOnly
-  minFreeSpacePercent: 1
+  minFreeSpacePercent: 7
 
 
   # limit background compaction or copying speed in mega bytes per second

From b373c1de93ab172ca8f0c3b15329ccea74f5b3c9 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 10:07:25 +0200
Subject: [PATCH 039/140] remove collectionPattern if is empty string / null

---
 k8s/seaweedfs/templates/cronjob.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/k8s/seaweedfs/templates/cronjob.yaml b/k8s/seaweedfs/templates/cronjob.yaml
index 4caf4bad1..c7dcd52b1 100644
--- a/k8s/seaweedfs/templates/cronjob.yaml
+++ b/k8s/seaweedfs/templates/cronjob.yaml
@@ -40,7 +40,7 @@ spec:
                   {{ if .Values.volume.dataCenter }} -dataCenter {{ .Values.volume.dataCenter }}{{ end }}\
                   {{ if .Values.cronjob.collection }} -collection {{ .Values.cronjob.collection }}{{ end }}\n\
                   {{- if .Values.cronjob.enableFixReplication }}
-                  volume.fix.replication -collectionPattern={{ .Values.cronjob.collectionPattern }} \n\
+                  volume.fix.replication {{ if .Values.cronjob.collectionPattern }} -collectionPattern={{ .Values.cronjob.collectionPattern }} {{ end }} \n\
                   {{- end }}
                   unlock\n" | \
                   /usr/bin/weed shell \

From a6e8d606b47e5f3e8cd8a57d2769d6f1404fbc8f Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 9 Feb 2021 00:30:16 -0800
Subject: [PATCH 040/140] Update README.md

---
 k8s/README.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/k8s/README.md b/k8s/README.md
index 5ec3ab407..6a1eb7a05 100644
--- a/k8s/README.md
+++ b/k8s/README.md
@@ -12,9 +12,12 @@ with ENV.
 ### current instances config (AIO):
 1 instance for each type (master/filer/volume/s3)
 
-instances need node labels:
+To avoid multiple volume servers on the same node, apply these node labels:
 * sw-volume: true  (for volume instance, specific tag)
 * sw-backend: true (for all others, as they less resource demanding)
+```
+kubectl label node YOUR_NODE_NAME sw-volume=true,sw-backend=true
+```
 
 you can update the replicas count for each node type in values.yaml,
 need to add more nodes with the corresponding label.

From 73a31789b4c44dd22f24190c8c8fa5179c66bc5e Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 12:03:44 +0200
Subject: [PATCH 041/140] forgot to upload (git add) the s3 secret for auth
 (previous pr)

---
 .../templates/seaweedfs-s3-secret.yaml        | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 k8s/seaweedfs/templates/seaweedfs-s3-secret.yaml

diff --git a/k8s/seaweedfs/templates/seaweedfs-s3-secret.yaml b/k8s/seaweedfs/templates/seaweedfs-s3-secret.yaml
new file mode 100644
index 000000000..66fd5f28e
--- /dev/null
+++ b/k8s/seaweedfs/templates/seaweedfs-s3-secret.yaml
@@ -0,0 +1,21 @@
+{{- if not (or .Values.filer.s3.skipAuthSecretCreation .Values.s3.skipAuthSecretCreation) }}
+{{- $access_key_admin := randAlphaNum 16 -}}
+{{- $secret_key_admin := randAlphaNum 32 -}}
+{{- $access_key_read := randAlphaNum 16 -}}
+{{- $secret_key_read := randAlphaNum 32 -}}
+apiVersion: v1
+kind: Secret
+type: Opaque
+metadata:
+  name: seaweedfs-s3-secret
+  namespace: {{ .Release.Namespace }}
+  annotations:
+    "helm.sh/resource-policy": keep
+    "helm.sh/hook": "pre-install"
+stringData:
+  admin_access_key_id: {{ $access_key_admin }}
+  admin_secret_access_key: {{ $secret_key_admin }}
+  read_access_key_id: {{ $access_key_read }}
+  read_secret_access_key: {{ $secret_key_read }}
+  seaweedfs_s3_config: '{"identities":[{"name":"anvAdmin","credentials":[{"accessKey":"{{ $access_key_admin }}","secretKey":"{{ $secret_key_admin }}"}],"actions":["Admin","Read","Write"]},{"name":"anvReadOnly","credentials":[{"accessKey":"{{ $access_key_read }}","secretKey":"{{ $secret_key_read }}"}],"actions":["Read"]}]}'
+{{- end }}
\ No newline at end of file

From 1a11967fd9a07fc6b64f7098896331afedbf1405 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Tue, 9 Feb 2021 12:04:19 +0200
Subject: [PATCH 042/140] update README to be more k8s newbie friendly :)

---
 k8s/README.md | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/k8s/README.md b/k8s/README.md
index 6a1eb7a05..36230f7b2 100644
--- a/k8s/README.md
+++ b/k8s/README.md
@@ -9,18 +9,32 @@ and backup/HA memsql can provide.
 with ENV.
 * cert config exists and can be enabled, but not been tested.
 
-### current instances config (AIO):
-1 instance for each type (master/filer/volume/s3)
+### prerequisites
+kubernetes node have labels which help to define which node(Host) will run which pod.
 
-To avoid multiple volume servers on the same node, apply these node labels:
-* sw-volume: true  (for volume instance, specific tag)
-* sw-backend: true (for all others, as they less resource demanding)
+s3/filer/master needs the label **sw-backend=true**
+
+volume need the label **sw-volume=true**
+
+to label a node to be able to run all pod types in k8s:
 ```
 kubectl label node YOUR_NODE_NAME sw-volume=true,sw-backend=true
 ```
 
+on production k8s deployment you will want each pod to have a different host,
+especially the volume server & the masters, currently all pods (master/volume/filer)
+have anti-affinity rule to disallow running multiple pod type on the same host.
+if you still want to run multiple pods of the same type (master/volume/filer) on the same host
+please set/update the corresponding affinity rule in values.yaml to an empty one:
+
+```affinity: ""```
+
+
+### current instances config (AIO):
+1 instance for each type (master/filer+s3/volume)
+
 you can update the replicas count for each node type in values.yaml,
-need to add more nodes with the corresponding label.
+need to add more nodes with the corresponding labels.
 
 most of the configuration are available through values.yaml
 

From 770393a48c7c70084ae2f1bc510b8504d3b14aa4 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 9 Feb 2021 23:58:08 -0800
Subject: [PATCH 043/140] volume: add capability to change disk type when
 moving a volume

---
 weed/pb/volume_server.proto                  |    1 +
 weed/pb/volume_server_pb/volume_server.pb.go | 1252 +++++++++---------
 weed/server/volume_grpc_copy.go              |    6 +-
 weed/shell/command_volume_balance.go         |    2 +-
 weed/shell/command_volume_copy.go            |    2 +-
 weed/shell/command_volume_move.go            |   13 +-
 6 files changed, 648 insertions(+), 628 deletions(-)

diff --git a/weed/pb/volume_server.proto b/weed/pb/volume_server.proto
index e4af81054..7faf5d4f5 100644
--- a/weed/pb/volume_server.proto
+++ b/weed/pb/volume_server.proto
@@ -234,6 +234,7 @@ message VolumeCopyRequest {
     string replication = 3;
     string ttl = 4;
     string source_data_node = 5;
+    string disk_type = 6;
 }
 message VolumeCopyResponse {
     uint64 last_append_at_ns = 1;
diff --git a/weed/pb/volume_server_pb/volume_server.pb.go b/weed/pb/volume_server_pb/volume_server.pb.go
index 753b2af69..dbcc738e5 100644
--- a/weed/pb/volume_server_pb/volume_server.pb.go
+++ b/weed/pb/volume_server_pb/volume_server.pb.go
@@ -1707,6 +1707,7 @@ type VolumeCopyRequest struct {
 	Replication    string `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
 	Ttl            string `protobuf:"bytes,4,opt,name=ttl,proto3" json:"ttl,omitempty"`
 	SourceDataNode string `protobuf:"bytes,5,opt,name=source_data_node,json=sourceDataNode,proto3" json:"source_data_node,omitempty"`
+	DiskType       string `protobuf:"bytes,6,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *VolumeCopyRequest) Reset() {
@@ -1776,6 +1777,13 @@ func (x *VolumeCopyRequest) GetSourceDataNode() string {
 	return ""
 }
 
+func (x *VolumeCopyRequest) GetDiskType() string {
+	if x != nil {
+		return x.DiskType
+	}
+	return ""
+}
+
 type VolumeCopyResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -4991,7 +4999,7 @@ var file_volume_server_proto_rawDesc = []byte{
 	0x49, 0x64, 0x22, 0x38, 0x0a, 0x14, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x53, 0x74, 0x61, 0x74,
 	0x75, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x20, 0x0a, 0x0c, 0x69, 0x73,
 	0x5f, 0x72, 0x65, 0x61, 0x64, 0x5f, 0x6f, 0x6e, 0x6c, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08,
-	0x52, 0x0a, 0x69, 0x73, 0x52, 0x65, 0x61, 0x64, 0x4f, 0x6e, 0x6c, 0x79, 0x22, 0xae, 0x01, 0x0a,
+	0x52, 0x0a, 0x69, 0x73, 0x52, 0x65, 0x61, 0x64, 0x4f, 0x6e, 0x6c, 0x79, 0x22, 0xcb, 0x01, 0x0a,
 	0x11, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x43, 0x6f, 0x70, 0x79, 0x52, 0x65, 0x71, 0x75, 0x65,
 	0x73, 0x74, 0x12, 0x1b, 0x0a, 0x09, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x69, 0x64, 0x18,
 	0x01, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x08, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x49, 0x64, 0x12,
@@ -5002,666 +5010,668 @@ var file_volume_server_proto_rawDesc = []byte{
 	0x6e, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x74, 0x6c, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03,
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+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1f, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f,
+	0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x51, 0x75, 0x65, 0x72, 0x69, 0x65,
+	0x64, 0x53, 0x74, 0x72, 0x69, 0x70, 0x65, 0x22, 0x00, 0x30, 0x01, 0x12, 0x71, 0x0a, 0x12, 0x56,
+	0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c, 0x65, 0x53, 0x74, 0x61, 0x74, 0x75,
+	0x73, 0x12, 0x2b, 0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65,
 	0x72, 0x5f, 0x70, 0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c,
-	0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22,
-	0x00, 0x42, 0x39, 0x5a, 0x37, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f,
-	0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65,
-	0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x76, 0x6f, 0x6c, 0x75,
-	0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x33,
+	0x65, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x2c,
+	0x2e, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70,
+	0x62, 0x2e, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x4e, 0x65, 0x65, 0x64, 0x6c, 0x65, 0x53, 0x74,
+	0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x39,
+	0x5a, 0x37, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72,
+	0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73,
+	0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f,
+	0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
diff --git a/weed/server/volume_grpc_copy.go b/weed/server/volume_grpc_copy.go
index 26c6b28e7..8fe71bd2e 100644
--- a/weed/server/volume_grpc_copy.go
+++ b/weed/server/volume_grpc_copy.go
@@ -54,7 +54,11 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
 			return fmt.Errorf("read volume file status failed, %v", err)
 		}
 
-		location := vs.store.FindFreeLocation(storage.DiskType(volFileInfoResp.DiskType))
+		diskType := volFileInfoResp.DiskType
+		if req.DiskType != "" {
+			diskType = req.DiskType
+		}
+		location := vs.store.FindFreeLocation(storage.DiskType(diskType))
 		if location == nil {
 			return fmt.Errorf("no space left")
 		}
diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index a57e07827..00308ebe8 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -332,7 +332,7 @@ func moveVolume(commandEnv *CommandEnv, v *master_pb.VolumeInformationMessage, f
 	}
 	fmt.Fprintf(os.Stdout, "  moving %s volume %s%d %s => %s\n", v.DiskType, collectionPrefix, v.Id, fullNode.info.Id, emptyNode.info.Id)
 	if applyChange {
-		return LiveMoveVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second)
+		return LiveMoveVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second, "")
 	}
 	return nil
 }
diff --git a/weed/shell/command_volume_copy.go b/weed/shell/command_volume_copy.go
index f9edf9431..85b4bb095 100644
--- a/weed/shell/command_volume_copy.go
+++ b/weed/shell/command_volume_copy.go
@@ -52,6 +52,6 @@ func (c *commandVolumeCopy) Do(args []string, commandEnv *CommandEnv, writer io.
 		return fmt.Errorf("source and target volume servers are the same!")
 	}
 
-	_, err = copyVolume(commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer)
+	_, err = copyVolume(commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, "")
 	return
 }
diff --git a/weed/shell/command_volume_move.go b/weed/shell/command_volume_move.go
index 2bc8dfad8..73490f4de 100644
--- a/weed/shell/command_volume_move.go
+++ b/weed/shell/command_volume_move.go
@@ -29,6 +29,7 @@ func (c *commandVolumeMove) Help() string {
 	return `move a live volume from one volume server to another volume server
 
 	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id>
+	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [ssd|hdd]
 
 	This command move a live volume from one volume server to another volume server. Here are the steps:
 
@@ -40,6 +41,8 @@ func (c *commandVolumeMove) Help() string {
 		Now the master will mark this volume id as writable.
 	5. This command asks the source volume server to delete the source volume
 
+	The option "-disk [ssd|hdd]" can be used to change the volume disk type.
+
 `
 }
 
@@ -53,6 +56,7 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *CommandEnv, writer io.
 	volumeIdInt := volMoveCommand.Int("volumeId", 0, "the volume id")
 	sourceNodeStr := volMoveCommand.String("source", "", "the source volume server <host>:<port>")
 	targetNodeStr := volMoveCommand.String("target", "", "the target volume server <host>:<port>")
+	diskTypeStr := volMoveCommand.String("disk", "", "[ssd|hdd] overwrite the original disk type")
 	if err = volMoveCommand.Parse(args); err != nil {
 		return nil
 	}
@@ -65,14 +69,14 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *CommandEnv, writer io.
 		return fmt.Errorf("source and target volume servers are the same!")
 	}
 
-	return LiveMoveVolume(commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, 5*time.Second)
+	return LiveMoveVolume(commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, 5*time.Second, *diskTypeStr)
 }
 
 // LiveMoveVolume moves one volume from one source volume server to one target volume server, with idleTimeout to drain the incoming requests.
-func LiveMoveVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, idleTimeout time.Duration) (err error) {
+func LiveMoveVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, idleTimeout time.Duration, diskType string) (err error) {
 
 	log.Printf("copying volume %d from %s to %s", volumeId, sourceVolumeServer, targetVolumeServer)
-	lastAppendAtNs, err := copyVolume(grpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer)
+	lastAppendAtNs, err := copyVolume(grpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, diskType)
 	if err != nil {
 		return fmt.Errorf("copy volume %d from %s to %s: %v", volumeId, sourceVolumeServer, targetVolumeServer, err)
 	}
@@ -91,7 +95,7 @@ func LiveMoveVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, so
 	return nil
 }
 
-func copyVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string) (lastAppendAtNs uint64, err error) {
+func copyVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, diskType string) (lastAppendAtNs uint64, err error) {
 
 	// check to see if the volume is already read-only and if its not then we need
 	// to mark it as read-only and then before we return we need to undo what we
@@ -134,6 +138,7 @@ func copyVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, source
 		resp, replicateErr := volumeServerClient.VolumeCopy(context.Background(), &volume_server_pb.VolumeCopyRequest{
 			VolumeId:       uint32(volumeId),
 			SourceDataNode: sourceVolumeServer,
+			DiskType:       diskType,
 		})
 		if replicateErr == nil {
 			lastAppendAtNs = resp.LastAppendAtNs

From 0cfed8c3cb8cd4e9e35310a0ce7621945e10ef70 Mon Sep 17 00:00:00 2001
From: Konstantin Lebedev <lebedev_k@tochka.com>
Date: Wed, 10 Feb 2021 15:29:05 +0500
Subject: [PATCH 044/140] restart replication if RabbitMQ connection closed
 https://github.com/google/go-cloud/issues/2958

---
 docker/{ => compose}/notification.toml             | 0
 docker/{ => compose}/replication.toml              | 0
 weed/replication/sub/notification_gocdk_pub_sub.go | 4 ++++
 3 files changed, 4 insertions(+)
 rename docker/{ => compose}/notification.toml (100%)
 rename docker/{ => compose}/replication.toml (100%)

diff --git a/docker/notification.toml b/docker/compose/notification.toml
similarity index 100%
rename from docker/notification.toml
rename to docker/compose/notification.toml
diff --git a/docker/replication.toml b/docker/compose/replication.toml
similarity index 100%
rename from docker/replication.toml
rename to docker/compose/replication.toml
diff --git a/weed/replication/sub/notification_gocdk_pub_sub.go b/weed/replication/sub/notification_gocdk_pub_sub.go
index 413c0e3cf..1d7fe520b 100644
--- a/weed/replication/sub/notification_gocdk_pub_sub.go
+++ b/weed/replication/sub/notification_gocdk_pub_sub.go
@@ -113,6 +113,10 @@ func (k *GoCDKPubSubInput) Initialize(configuration util.Configuration, prefix s
 func (k *GoCDKPubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
 	msg, err := k.sub.Receive(context.Background())
 	if err != nil {
+		var conn *amqp.Connection
+		if k.sub.As(&conn) && conn.IsClosed() {
+			glog.Fatalln(err)
+		}
 		return
 	}
 	onFailureFn = func() {

From c959aaa19bdf76b90f884eb63707772902adfebe Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 10 Feb 2021 23:13:14 -0800
Subject: [PATCH 045/140] mount: load directory based on correct filer path

fix https://github.com/chrislusf/seaweedfs/issues/1799
---
 weed/util/bounded_tree/bounded_tree.go | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/weed/util/bounded_tree/bounded_tree.go b/weed/util/bounded_tree/bounded_tree.go
index 0e8af2520..e49c1e50a 100644
--- a/weed/util/bounded_tree/bounded_tree.go
+++ b/weed/util/bounded_tree/bounded_tree.go
@@ -70,12 +70,8 @@ func (t *BoundedTree) ensureVisited(n *Node, currentPath util.FullPath, componen
 	} else {
 		// fmt.Printf("ensure %v\n", currentPath)
 
-		filerPath := currentPath
-		if t.baseDir != "/" {
-			filerPath = t.baseDir + filerPath
-		}
 
-		children, err := visitFn(filerPath)
+		children, err := visitFn(currentPath)
 		if err != nil {
 			glog.V(0).Infof("failed to visit %s: %v", currentPath, err)
 			return false, err

From a0e84c4fbcda5893c5414fe14866f1140f003d7a Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 10 Feb 2021 23:41:05 -0800
Subject: [PATCH 046/140] go fmt

---
 weed/filesys/wfs.go                           | 2 +-
 weed/replication/sink/filersink/filer_sink.go | 2 +-
 weed/s3api/s3api_object_handlers.go           | 2 +-
 weed/util/bounded_tree/bounded_tree.go        | 1 -
 4 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index 9443bc0bf..b41d76cd6 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -3,8 +3,8 @@ package filesys
 import (
 	"context"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"math"
 	"os"
diff --git a/weed/replication/sink/filersink/filer_sink.go b/weed/replication/sink/filersink/filer_sink.go
index 9960634f6..509f75116 100644
--- a/weed/replication/sink/filersink/filer_sink.go
+++ b/weed/replication/sink/filersink/filer_sink.go
@@ -25,7 +25,7 @@ type FilerSink struct {
 	replication       string
 	collection        string
 	ttlSec            int32
-	diskType       string
+	diskType          string
 	dataCenter        string
 	grpcDialOption    grpc.DialOption
 	address           string
diff --git a/weed/s3api/s3api_object_handlers.go b/weed/s3api/s3api_object_handlers.go
index c9e124328..4c408110a 100644
--- a/weed/s3api/s3api_object_handlers.go
+++ b/weed/s3api/s3api_object_handlers.go
@@ -223,7 +223,7 @@ func (s3a *S3ApiServer) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *h
 
 }
 
-func doDeleteEmptyDirectories(client filer_pb.SeaweedFilerClient, directoriesWithDeletion map[string]int) (newDirectoriesWithDeletion map[string]int){
+func doDeleteEmptyDirectories(client filer_pb.SeaweedFilerClient, directoriesWithDeletion map[string]int) (newDirectoriesWithDeletion map[string]int) {
 	var allDirs []string
 	for dir, _ := range directoriesWithDeletion {
 		allDirs = append(allDirs, dir)
diff --git a/weed/util/bounded_tree/bounded_tree.go b/weed/util/bounded_tree/bounded_tree.go
index e49c1e50a..3a8a22a9c 100644
--- a/weed/util/bounded_tree/bounded_tree.go
+++ b/weed/util/bounded_tree/bounded_tree.go
@@ -70,7 +70,6 @@ func (t *BoundedTree) ensureVisited(n *Node, currentPath util.FullPath, componen
 	} else {
 		// fmt.Printf("ensure %v\n", currentPath)
 
-
 		children, err := visitFn(currentPath)
 		if err != nil {
 			glog.V(0).Infof("failed to visit %s: %v", currentPath, err)

From 885ca34748926b5ffb6fe6ef4cfc5e225bdaa98c Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 11 Feb 2021 00:44:40 -0800
Subject: [PATCH 047/140] volume: fail fast if idx files are missing

fix https://github.com/chrislusf/seaweedfs/issues/1796
---
 weed/storage/volume_checking.go | 16 ++++++++++++++++
 weed/storage/volume_loading.go  |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/weed/storage/volume_checking.go b/weed/storage/volume_checking.go
index 8d63c39c1..b76933083 100644
--- a/weed/storage/volume_checking.go
+++ b/weed/storage/volume_checking.go
@@ -2,6 +2,7 @@ package storage
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
 	"io"
 	"os"
 
@@ -148,3 +149,18 @@ func verifyDeletedNeedleIntegrity(datFile backend.BackendStorageFile, v needle.V
 	}
 	return n.AppendAtNs, err
 }
+
+func (v *Volume) checkIdxFile() error {
+	datFileSize, _, err := v.DataBackend.GetStat()
+	if err != nil {
+		return fmt.Errorf("get stat %s: %v", v.FileName(".dat"), err)
+	}
+	if datFileSize <= super_block.SuperBlockSize {
+		return nil
+	}
+	indexFileName := v.FileName(".idx")
+	if util.FileExists(indexFileName) {
+		return nil
+	}
+	return fmt.Errorf("idx file %s does not exists", indexFileName)
+}
diff --git a/weed/storage/volume_loading.go b/weed/storage/volume_loading.go
index 52a50a98c..bff1055bb 100644
--- a/weed/storage/volume_loading.go
+++ b/weed/storage/volume_loading.go
@@ -96,6 +96,10 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
 				v.dirIdx = v.dir
 			}
 		}
+		// check volume idx files
+		if err := v.checkIdxFile(); err != nil {
+			glog.Fatalf("check volume idx file %s: %v", v.FileName(".idx"), err)
+		}
 		var indexFile *os.File
 		if v.noWriteOrDelete {
 			glog.V(0).Infoln("open to read file", v.FileName(".idx"))

From 94eac4f00eb5fc364614b53718a4243141572215 Mon Sep 17 00:00:00 2001
From: Konstantin Lebedev <lebedev_k@tochka.com>
Date: Thu, 11 Feb 2021 13:59:36 +0500
Subject: [PATCH 048/140] Do reconnect to RabbitMQ

https://github.com/google/go-cloud/issues/2958
https://github.com/chrislusf/seaweedfs/issues/1773
---
 weed/filer/filer_notify.go                    |  5 ++-
 .../gocdk_pub_sub/gocdk_pub_sub.go            | 35 ++++++++++++++++++-
 .../sub/notification_gocdk_pub_sub.go         | 33 ++++++++++++-----
 3 files changed, 62 insertions(+), 11 deletions(-)

diff --git a/weed/filer/filer_notify.go b/weed/filer/filer_notify.go
index f3a795ad0..c461a82b8 100644
--- a/weed/filer/filer_notify.go
+++ b/weed/filer/filer_notify.go
@@ -55,7 +55,10 @@ func (f *Filer) NotifyUpdateEvent(ctx context.Context, oldEntry, newEntry *Entry
 
 	if notification.Queue != nil {
 		glog.V(3).Infof("notifying entry update %v", fullpath)
-		notification.Queue.SendMessage(fullpath, eventNotification)
+		if err := notification.Queue.SendMessage(fullpath, eventNotification); err != nil {
+			// throw message
+			glog.Error(err)
+		}
 	}
 
 	f.logMetaEvent(ctx, fullpath, eventNotification)
diff --git a/weed/notification/gocdk_pub_sub/gocdk_pub_sub.go b/weed/notification/gocdk_pub_sub/gocdk_pub_sub.go
index 1ae102509..01c4d901f 100644
--- a/weed/notification/gocdk_pub_sub/gocdk_pub_sub.go
+++ b/weed/notification/gocdk_pub_sub/gocdk_pub_sub.go
@@ -17,10 +17,14 @@ package gocdk_pub_sub
 import (
 	"context"
 	"fmt"
-
 	"github.com/golang/protobuf/proto"
+	"github.com/streadway/amqp"
 	"gocloud.dev/pubsub"
 	_ "gocloud.dev/pubsub/awssnssqs"
+	"gocloud.dev/pubsub/rabbitpubsub"
+	"net/url"
+	"path"
+	"time"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/notification"
@@ -29,12 +33,18 @@ import (
 	_ "gocloud.dev/pubsub/gcppubsub"
 	_ "gocloud.dev/pubsub/natspubsub"
 	_ "gocloud.dev/pubsub/rabbitpubsub"
+	"os"
 )
 
 func init() {
 	notification.MessageQueues = append(notification.MessageQueues, &GoCDKPubSub{})
 }
 
+func getPath(rawUrl string) string {
+	parsedUrl, _ := url.Parse(rawUrl)
+	return path.Join(parsedUrl.Host, parsedUrl.Path)
+}
+
 type GoCDKPubSub struct {
 	topicURL string
 	topic    *pubsub.Topic
@@ -44,6 +54,28 @@ func (k *GoCDKPubSub) GetName() string {
 	return "gocdk_pub_sub"
 }
 
+func (k *GoCDKPubSub) doReconnect() {
+	var conn *amqp.Connection
+	if k.topic.As(&conn) {
+		go func() {
+			<-conn.NotifyClose(make(chan *amqp.Error))
+			conn.Close()
+			k.topic.Shutdown(context.Background())
+			for {
+				glog.Info("Try reconnect")
+				conn, err := amqp.Dial(os.Getenv("RABBIT_SERVER_URL"))
+				if err == nil {
+					k.topic = rabbitpubsub.OpenTopic(conn, getPath(k.topicURL), nil)
+					k.doReconnect()
+					break
+				}
+				glog.Error(err)
+				time.Sleep(time.Second)
+			}
+		}()
+	}
+}
+
 func (k *GoCDKPubSub) Initialize(configuration util.Configuration, prefix string) error {
 	k.topicURL = configuration.GetString(prefix + "topic_url")
 	glog.V(0).Infof("notification.gocdk_pub_sub.topic_url: %v", k.topicURL)
@@ -52,6 +84,7 @@ func (k *GoCDKPubSub) Initialize(configuration util.Configuration, prefix string
 		glog.Fatalf("Failed to open topic: %v", err)
 	}
 	k.topic = topic
+	k.doReconnect()
 	return nil
 }
 
diff --git a/weed/replication/sub/notification_gocdk_pub_sub.go b/weed/replication/sub/notification_gocdk_pub_sub.go
index 1d7fe520b..b16eec2e1 100644
--- a/weed/replication/sub/notification_gocdk_pub_sub.go
+++ b/weed/replication/sub/notification_gocdk_pub_sub.go
@@ -9,9 +9,12 @@ import (
 	"github.com/streadway/amqp"
 	"gocloud.dev/pubsub"
 	_ "gocloud.dev/pubsub/awssnssqs"
+	"gocloud.dev/pubsub/rabbitpubsub"
 	"net/url"
+	"os"
 	"path"
 	"strings"
+	"time"
 
 	// _ "gocloud.dev/pubsub/azuresb"
 	_ "gocloud.dev/pubsub/gcppubsub"
@@ -73,7 +76,8 @@ func QueueDeclareAndBind(conn *amqp.Connection, exchangeUrl string, queueUrl str
 }
 
 type GoCDKPubSubInput struct {
-	sub *pubsub.Subscription
+	sub    *pubsub.Subscription
+	subURL string
 }
 
 func (k *GoCDKPubSubInput) GetName() string {
@@ -82,9 +86,9 @@ func (k *GoCDKPubSubInput) GetName() string {
 
 func (k *GoCDKPubSubInput) Initialize(configuration util.Configuration, prefix string) error {
 	topicUrl := configuration.GetString(prefix + "topic_url")
-	subURL := configuration.GetString(prefix + "sub_url")
-	glog.V(0).Infof("notification.gocdk_pub_sub.sub_url: %v", subURL)
-	sub, err := pubsub.OpenSubscription(context.Background(), subURL)
+	k.subURL = configuration.GetString(prefix + "sub_url")
+	glog.V(0).Infof("notification.gocdk_pub_sub.sub_url: %v", k.subURL)
+	sub, err := pubsub.OpenSubscription(context.Background(), k.subURL)
 	if err != nil {
 		return err
 	}
@@ -95,10 +99,10 @@ func (k *GoCDKPubSubInput) Initialize(configuration util.Configuration, prefix s
 			return err
 		}
 		defer ch.Close()
-		_, err = ch.QueueInspect(getPath(subURL))
+		_, err = ch.QueueInspect(getPath(k.subURL))
 		if err != nil {
 			if strings.HasPrefix(err.Error(), "Exception (404) Reason") {
-				if err := QueueDeclareAndBind(conn, topicUrl, subURL); err != nil {
+				if err := QueueDeclareAndBind(conn, topicUrl, k.subURL); err != nil {
 					return err
 				}
 			} else {
@@ -111,13 +115,24 @@ func (k *GoCDKPubSubInput) Initialize(configuration util.Configuration, prefix s
 }
 
 func (k *GoCDKPubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
-	msg, err := k.sub.Receive(context.Background())
+	ctx := context.Background()
+	msg, err := k.sub.Receive(ctx)
 	if err != nil {
 		var conn *amqp.Connection
 		if k.sub.As(&conn) && conn.IsClosed() {
-			glog.Fatalln(err)
+			conn.Close()
+			k.sub.Shutdown(ctx)
+			conn, err = amqp.Dial(os.Getenv("RABBIT_SERVER_URL"))
+			if err != nil {
+				glog.Error(err)
+				time.Sleep(time.Second)
+				return
+			}
+			k.sub = rabbitpubsub.OpenSubscription(conn, getPath(k.subURL), nil)
+			return
 		}
-		return
+		// This is permanent cached sub err
+		glog.Fatal(err)
 	}
 	onFailureFn = func() {
 		if msg.Nackable() {

From 487e435679d6c8cc153b8ef048b8957478cd3d0c Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 12 Feb 2021 03:47:15 -0800
Subject: [PATCH 049/140] adjust http max idle connections per host

related to https://github.com/chrislusf/seaweedfs/issues/1802
---
 .../bench_filer_upload/bench_filer_upload.go                    | 2 +-
 weed/operation/upload_content.go                                | 1 +
 weed/pb/grpc_client_server.go                                   | 1 +
 weed/s3api/s3api_object_handlers.go                             | 1 +
 weed/server/filer_server_handlers_proxy.go                      | 1 +
 weed/util/http_util.go                                          | 1 +
 6 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/unmaintained/stress_filer_upload/bench_filer_upload/bench_filer_upload.go b/unmaintained/stress_filer_upload/bench_filer_upload/bench_filer_upload.go
index b2e4b28c6..2ee8028f2 100644
--- a/unmaintained/stress_filer_upload/bench_filer_upload/bench_filer_upload.go
+++ b/unmaintained/stress_filer_upload/bench_filer_upload/bench_filer_upload.go
@@ -45,7 +45,7 @@ func main() {
 			defer wg.Done()
 
 			client := &http.Client{Transport: &http.Transport{
-				MaxConnsPerHost:     1024,
+				MaxIdleConns:     1024,
 				MaxIdleConnsPerHost: 1024,
 			}}
 			r := rand.New(rand.NewSource(time.Now().UnixNano() + int64(x)))
diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index fccc24b16..7e2a6dcd2 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -58,6 +58,7 @@ var (
 
 func init() {
 	HttpClient = &http.Client{Transport: &http.Transport{
+		MaxIdleConns:        1024,
 		MaxIdleConnsPerHost: 1024,
 	}}
 }
diff --git a/weed/pb/grpc_client_server.go b/weed/pb/grpc_client_server.go
index 9ffda9b04..ec49d177b 100644
--- a/weed/pb/grpc_client_server.go
+++ b/weed/pb/grpc_client_server.go
@@ -29,6 +29,7 @@ var (
 
 func init() {
 	http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = 1024
+	http.DefaultTransport.(*http.Transport).MaxIdleConns = 1024
 }
 
 func NewGrpcServer(opts ...grpc.ServerOption) *grpc.Server {
diff --git a/weed/s3api/s3api_object_handlers.go b/weed/s3api/s3api_object_handlers.go
index 4c408110a..82f0de6b2 100644
--- a/weed/s3api/s3api_object_handlers.go
+++ b/weed/s3api/s3api_object_handlers.go
@@ -27,6 +27,7 @@ var (
 
 func init() {
 	client = &http.Client{Transport: &http.Transport{
+		MaxIdleConns:        1024,
 		MaxIdleConnsPerHost: 1024,
 	}}
 }
diff --git a/weed/server/filer_server_handlers_proxy.go b/weed/server/filer_server_handlers_proxy.go
index 8d73bc960..b8b28790b 100644
--- a/weed/server/filer_server_handlers_proxy.go
+++ b/weed/server/filer_server_handlers_proxy.go
@@ -14,6 +14,7 @@ var (
 
 func init() {
 	client = &http.Client{Transport: &http.Transport{
+		MaxIdleConns:        1024,
 		MaxIdleConnsPerHost: 1024,
 	}}
 }
diff --git a/weed/util/http_util.go b/weed/util/http_util.go
index 2cd69b01b..135d10c45 100644
--- a/weed/util/http_util.go
+++ b/weed/util/http_util.go
@@ -21,6 +21,7 @@ var (
 
 func init() {
 	Transport = &http.Transport{
+		MaxIdleConns:        1024,
 		MaxIdleConnsPerHost: 1024,
 	}
 	client = &http.Client{

From 7d9dc3c6a273e21d719605a650504a30e545b078 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 12 Feb 2021 05:59:52 -0800
Subject: [PATCH 050/140] use fasthttp lib to read

---
 go.mod                                        |   5 +-
 go.sum                                        |  18 +++
 weed/command/benchmark.go                     |   2 +-
 weed/filer/filechunk_manifest.go              |   2 +-
 weed/filer/read_write.go                      |   2 +-
 weed/filer/stream.go                          |   2 +-
 .../replication/repl_util/replication_utli.go |   2 +-
 weed/util/fasthttp_util.go                    | 115 ++++++++++++++++++
 weed/util/http_util.go                        |   2 +-
 9 files changed, 142 insertions(+), 8 deletions(-)
 create mode 100644 weed/util/fasthttp_util.go

diff --git a/go.mod b/go.mod
index e689ed4a5..a200370fd 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/chrislusf/seaweedfs
 go 1.12
 
 require (
-	cloud.google.com/go v0.58.0
+	cloud.google.com/go v0.58.0 // indirect
 	cloud.google.com/go/pubsub v1.3.1
 	cloud.google.com/go/storage v1.9.0
 	github.com/Azure/azure-amqp-common-go/v2 v2.1.0 // indirect
@@ -41,7 +41,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway v1.11.0 // indirect
 	github.com/jcmturner/gofork v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.10
-	github.com/karlseguin/ccache v2.0.3+incompatible
+	github.com/karlseguin/ccache v2.0.3+incompatible // indirect
 	github.com/karlseguin/ccache/v2 v2.0.7
 	github.com/klauspost/compress v1.10.9 // indirect
 	github.com/klauspost/cpuid v1.2.1 // indirect
@@ -73,6 +73,7 @@ require (
 	github.com/tidwall/match v1.0.1
 	github.com/tsuna/gohbase v0.0.0-20201125011725-348991136365
 	github.com/valyala/bytebufferpool v1.0.0
+	github.com/valyala/fasthttp v1.20.0
 	github.com/viant/assertly v0.5.4 // indirect
 	github.com/viant/ptrie v0.3.0
 	github.com/viant/toolbox v0.33.2 // indirect
diff --git a/go.sum b/go.sum
index 27fbf029a..cf4ef4f98 100644
--- a/go.sum
+++ b/go.sum
@@ -23,8 +23,10 @@ cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNF
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
 cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
 cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0 h1:PQcPefKFdaIzjQFbiyOgAqyx8q5djaE7x9Sqe712DPA=
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/datastore v1.1.0 h1:/May9ojXjRkPBNVrq+oWLqmWCkr4OU5uRY29bu0mRyQ=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
 cloud.google.com/go/firestore v1.2.0/go.mod h1:iISCjWnTpnoJT1R287xRdjvQHJrxQOpeah4phb5D3h0=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
@@ -68,10 +70,12 @@ github.com/Azure/go-amqp v0.12.7/go.mod h1:qApuH6OFTSKZFmCOxccvAv5rLizBQf4v8pRmG
 github.com/Azure/go-autorest v12.0.0+incompatible h1:N+VqClcomLGD/sHb3smbSYYtNMgKpVV3Cd5r5i8z6bQ=
 github.com/Azure/go-autorest v12.0.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
 github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
+github.com/Azure/go-autorest/autorest v0.9.3 h1:OZEIaBbMdUE/Js+BQKlpO81XlISgipr6yDJ+PSwsgi4=
 github.com/Azure/go-autorest/autorest v0.9.3/go.mod h1:GsRuLYvwzLjjjRoWEIyMUaYq8GNUx2nRB378IPt/1p0=
 github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
 github.com/Azure/go-autorest/autorest/adal v0.8.0/go.mod h1:Z6vX6WXXuyieHAXwMj0S6HY6e6wcHn37qQMBQlvY3lc=
 github.com/Azure/go-autorest/autorest/adal v0.8.1/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
+github.com/Azure/go-autorest/autorest/adal v0.8.3 h1:O1AGG9Xig71FxdX9HO5pGNyZ7TbSyHaVg+5eJO/jSGw=
 github.com/Azure/go-autorest/autorest/adal v0.8.3/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
 github.com/Azure/go-autorest/autorest/azure/auth v0.4.2/go.mod h1:90gmfKdlmKgfjUpnCEpOJzsUEjrWDSLwHIG73tSXddM=
 github.com/Azure/go-autorest/autorest/azure/cli v0.3.1/go.mod h1:ZG5p860J94/0kI9mNJVoIoLgXcirM2gF5i2kWloofxw=
@@ -105,6 +109,8 @@ github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuy
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/andybalholm/brotli v1.0.0 h1:7UCwP93aiSfvWpapti8g88vVVGp2qqtGyePsSuDafo4=
+github.com/andybalholm/brotli v1.0.0/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
@@ -446,6 +452,7 @@ github.com/json-iterator/go v1.1.8/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/u
 github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr68=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
+github.com/jstemmer/go-junit-report v0.9.1 h1:6QPYqodiu3GuPL+7mfx+NwDdp2eTkp9IfEUpgAwUN0o=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
@@ -455,6 +462,7 @@ github.com/karlseguin/ccache/v2 v2.0.7 h1:y5Pfi4eiyYCOD6LS/Kj+o6Nb4M5Ngpw9qFQs+v
 github.com/karlseguin/ccache/v2 v2.0.7/go.mod h1:2BDThcfQMf/c0jnZowt16eW405XIqZPavt+HoYEtcxQ=
 github.com/karlseguin/expect v1.0.1 h1:z4wy4npwwHSWKjGWH85WNJO42VQhovxTCZDSzhjo8hY=
 github.com/karlseguin/expect v1.0.1/go.mod h1:zNBxMY8P21owkeogJELCLeHIt+voOSduHYTFUbwRAV8=
+github.com/karlseguin/expect v1.0.2-0.20190806010014-778a5f0c6003 h1:vJ0Snvo+SLMY72r5J4sEfkuE7AFbixEP2qRbEcum/wA=
 github.com/karlseguin/expect v1.0.2-0.20190806010014-778a5f0c6003/go.mod h1:zNBxMY8P21owkeogJELCLeHIt+voOSduHYTFUbwRAV8=
 github.com/karrick/godirwalk v1.8.0/go.mod h1:H5KPZjojv4lE+QYImBI8xVtrBRgYrIVsaRPx4tDPEn4=
 github.com/karrick/godirwalk v1.10.3/go.mod h1:RoGL9dQei4vP9ilrpETWE8CLOZ1kiN0LhBygSwrAsHA=
@@ -463,6 +471,7 @@ github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQL
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/compress v1.9.5 h1:U+CaK85mrNNb4k8BNOfgJtJ/gr6kswUCFj6miSzVC6M=
 github.com/klauspost/compress v1.9.5/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
+github.com/klauspost/compress v1.10.7/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
 github.com/klauspost/compress v1.10.9 h1:pPRt1Z78crspaHISkpSSHjDlx+Tt9suHe519dsI0vF4=
 github.com/klauspost/compress v1.10.9/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
 github.com/klauspost/cpuid v1.2.1 h1:vJi+O/nMdFt0vqm8NZBI6wzALWdA2X+egi0ogNyrC/w=
@@ -756,6 +765,9 @@ github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijb
 github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
+github.com/valyala/fasthttp v1.20.0 h1:olTmcnLQeZrkBc4TVgE/BatTo1NE/IvW050AuD8SW+U=
+github.com/valyala/fasthttp v1.20.0/go.mod h1:jjraHZVbKOXftJfsOYoAjaeygpj5hr8ermTRJNroD7A=
+github.com/valyala/tcplisten v0.0.0-20161114210144-ceec8f93295a/go.mod h1:v3UYOV9WzVtRmSR+PDvWpU/qWl4Wa5LApYYX4ZtKbio=
 github.com/viant/assertly v0.5.4 h1:5Hh4U3pLZa6uhCFAGpYOxck/8l9TZczEzoHNfJAhHEQ=
 github.com/viant/assertly v0.5.4/go.mod h1:aGifi++jvCrUaklKEKT0BU95igDNaqkvz+49uaYMPRU=
 github.com/viant/ptrie v0.3.0 h1:SDaRd7Gqr1+ItCNz0GpTxRdK21nOfqjV6YtBm9jGlMY=
@@ -874,6 +886,7 @@ golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
+golang.org/x/lint v0.0.0-20200302205851-738671d3881b h1:Wh+f8QHJXR411sJR8/vRBTZ7YapZaRvUcLFFJhusH0k=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
@@ -882,6 +895,7 @@ golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -919,6 +933,7 @@ golang.org/x/net v0.0.0-20200513185701-a91f0712d120/go.mod h1:qpuaurCH72eLCgpAm/
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200602114024-627f9648deb9/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
+golang.org/x/net v0.0.0-20201016165138-7b1cca2348c0/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
 golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -1058,6 +1073,7 @@ golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20200515010526-7d3b6ebf133d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200601175630-2caf76543d99/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200606014950-c42cb6316fb6/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200608174601-1b747fd94509 h1:MI14dOfl3OG6Zd32w3ugsrvcUO810fDZdWakTq39dH4=
 golang.org/x/tools v0.0.0-20200608174601-1b747fd94509/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 h1:9zdDQZ7Thm29KFXgAX/+yaf3eVbP7djjWp/dXAppNCc=
@@ -1094,6 +1110,7 @@ google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww
 google.golang.org/appengine v1.6.2 h1:j8RI1yW0SkI+paT6uGwMlrMI/6zwYA6/CFil8rxOzGI=
 google.golang.org/appengine v1.6.2/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/appengine v1.6.6 h1:lMO5rYAqUxkmaj76jAkRUvt5JZgFymx/+Q5Mzfivuhc=
 google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
@@ -1211,6 +1228,7 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 modernc.org/b v1.0.0 h1:vpvqeyp17ddcQWF29Czawql4lDdABCDRbXRAS4+aF2o=
 modernc.org/b v1.0.0/go.mod h1:uZWcZfRj1BpYzfN9JTerzlNUnnPsV9O2ZA8JsRcubNg=
diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 351efd3dc..c3ca6370a 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -293,7 +293,7 @@ func readFiles(fileIdLineChan chan string, s *stat) {
 		}
 		var bytes []byte
 		for _, url := range urls {
-			bytes, _, err = util.Get(url)
+			bytes, _, err = util.FastGet(url)
 			if err == nil {
 				break
 			}
diff --git a/weed/filer/filechunk_manifest.go b/weed/filer/filechunk_manifest.go
index 845bfaec1..99a62c90c 100644
--- a/weed/filer/filechunk_manifest.go
+++ b/weed/filer/filechunk_manifest.go
@@ -102,7 +102,7 @@ func retriedFetchChunkData(urlStrings []string, cipherKey []byte, isGzipped bool
 
 	for waitTime := time.Second; waitTime < util.RetryWaitTime; waitTime += waitTime / 2 {
 		for _, urlString := range urlStrings {
-			shouldRetry, err = util.ReadUrlAsStream(urlString+"?readDeleted=true", cipherKey, isGzipped, isFullChunk, offset, size, func(data []byte) {
+			shouldRetry, err = util.FastReadUrlAsStream(urlString+"?readDeleted=true", cipherKey, isGzipped, isFullChunk, offset, size, func(data []byte) {
 				buffer.Write(data)
 			})
 			if !shouldRetry {
diff --git a/weed/filer/read_write.go b/weed/filer/read_write.go
index 1f78057ef..7a6da3beb 100644
--- a/weed/filer/read_write.go
+++ b/weed/filer/read_write.go
@@ -35,7 +35,7 @@ func ReadContent(filerAddress string, dir, name string) ([]byte, error) {
 
 	target := fmt.Sprintf("http://%s%s/%s", filerAddress, dir, name)
 
-	data, _, err := util.Get(target)
+	data, _, err := util.FastGet(target)
 
 	return data, err
 }
diff --git a/weed/filer/stream.go b/weed/filer/stream.go
index f0042a0ff..075204b79 100644
--- a/weed/filer/stream.go
+++ b/weed/filer/stream.go
@@ -181,7 +181,7 @@ func (c *ChunkStreamReader) fetchChunkToBuffer(chunkView *ChunkView) error {
 	var buffer bytes.Buffer
 	var shouldRetry bool
 	for _, urlString := range urlStrings {
-		shouldRetry, err = util.ReadUrlAsStream(urlString+"?readDeleted=true", chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size), func(data []byte) {
+		shouldRetry, err = util.FastReadUrlAsStream(urlString+"?readDeleted=true", chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size), func(data []byte) {
 			buffer.Write(data)
 		})
 		if !shouldRetry {
diff --git a/weed/replication/repl_util/replication_utli.go b/weed/replication/repl_util/replication_utli.go
index c5b8ab4e1..3514c6977 100644
--- a/weed/replication/repl_util/replication_utli.go
+++ b/weed/replication/repl_util/replication_utli.go
@@ -20,7 +20,7 @@ func CopyFromChunkViews(chunkViews []*filer.ChunkView, filerSource *source.Filer
 		var shouldRetry bool
 
 		for _, fileUrl := range fileUrls {
-			shouldRetry, err = util.ReadUrlAsStream(fileUrl+"?readDeleted=true", nil, false, chunk.IsFullChunk(), chunk.Offset, int(chunk.Size), func(data []byte) {
+			shouldRetry, err = util.FastReadUrlAsStream(fileUrl+"?readDeleted=true", nil, false, chunk.IsFullChunk(), chunk.Offset, int(chunk.Size), func(data []byte) {
 				writeErr = writeFunc(data)
 			})
 			if err != nil {
diff --git a/weed/util/fasthttp_util.go b/weed/util/fasthttp_util.go
new file mode 100644
index 000000000..59fde37d0
--- /dev/null
+++ b/weed/util/fasthttp_util.go
@@ -0,0 +1,115 @@
+package util
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/valyala/fasthttp"
+	"sync"
+	"time"
+)
+
+var (
+	fastClient = &fasthttp.Client{
+		NoDefaultUserAgentHeader:      true, // Don't send: User-Agent: fasthttp
+		MaxConnsPerHost:               1024,
+		ReadBufferSize:                4096,      // Make sure to set this big enough that your whole request can be read at once.
+		WriteBufferSize:               64 * 1024, // Same but for your response.
+		ReadTimeout:                   time.Second,
+		WriteTimeout:                  time.Second,
+		MaxIdleConnDuration:           time.Minute,
+		DisableHeaderNamesNormalizing: true, // If you set the case on your headers correctly you can enable this.
+	}
+
+	// Put everything in pools to prevent garbage.
+	bytesPool = sync.Pool{
+		New: func() interface{} {
+			b := make([]byte, 0)
+			return &b
+		},
+	}
+
+	responsePool = sync.Pool{
+		New: func() interface{} {
+			return make(chan *fasthttp.Response)
+		},
+	}
+)
+
+func FastGet(url string) ([]byte, bool, error) {
+
+	req := fasthttp.AcquireRequest()
+	res := fasthttp.AcquireResponse()
+	defer fasthttp.ReleaseRequest(req)
+	defer fasthttp.ReleaseResponse(res)
+
+	req.SetRequestURIBytes([]byte(url))
+	req.Header.Add("Accept-Encoding", "gzip")
+
+	err := fastClient.Do(req, res)
+	if err != nil {
+		return nil, true, err
+	}
+
+	var data []byte
+	contentEncoding := res.Header.Peek("Content-Encoding")
+	if bytes.Compare(contentEncoding, []byte("gzip")) == 0 {
+		data, err = res.BodyGunzip()
+	} else {
+		data = res.Body()
+	}
+
+	out := make([]byte, len(data))
+	copy(out, data)
+
+	if res.StatusCode() >= 400 {
+		retryable := res.StatusCode() >= 500
+		return nil, retryable, fmt.Errorf("%s: %s", url, res.StatusCode())
+	}
+	if err != nil {
+		return nil, false, err
+	}
+	return out, false, nil
+}
+
+func FastReadUrlAsStream(fileUrl string, cipherKey []byte, isContentGzipped bool, isFullChunk bool, offset int64, size int, fn func(data []byte)) (retryable bool, err error) {
+
+	if cipherKey != nil {
+		return readEncryptedUrl(fileUrl, cipherKey, isContentGzipped, isFullChunk, offset, size, fn)
+	}
+
+	req := fasthttp.AcquireRequest()
+	res := fasthttp.AcquireResponse()
+	defer fasthttp.ReleaseRequest(req)
+	defer fasthttp.ReleaseResponse(res)
+
+	req.SetRequestURIBytes([]byte(fileUrl))
+
+	if isFullChunk {
+		req.Header.Add("Accept-Encoding", "gzip")
+	} else {
+		req.Header.Add("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+int64(size)-1))
+	}
+
+	if err = fastClient.Do(req, res); err != nil {
+		return true, err
+	}
+
+	if res.StatusCode() >= 400 {
+		retryable = res.StatusCode() >= 500
+		return retryable, fmt.Errorf("%s: %s", fileUrl, res.StatusCode())
+	}
+
+	contentEncoding := res.Header.Peek("Content-Encoding")
+	if bytes.Compare(contentEncoding, []byte("gzip")) == 0 {
+		bodyData, err := res.BodyGunzip()
+		if err != nil {
+			return false, err
+		}
+		fn(bodyData)
+	} else {
+		fn(res.Body())
+	}
+
+	return false, nil
+
+}
diff --git a/weed/util/http_util.go b/weed/util/http_util.go
index 135d10c45..eff282bab 100644
--- a/weed/util/http_util.go
+++ b/weed/util/http_util.go
@@ -313,7 +313,7 @@ func ReadUrlAsStream(fileUrl string, cipherKey []byte, isContentGzipped bool, is
 }
 
 func readEncryptedUrl(fileUrl string, cipherKey []byte, isContentCompressed bool, isFullChunk bool, offset int64, size int, fn func(data []byte)) (bool, error) {
-	encryptedData, retryable, err := Get(fileUrl)
+	encryptedData, retryable, err := FastGet(fileUrl)
 	if err != nil {
 		return retryable, fmt.Errorf("fetch %s: %v", fileUrl, err)
 	}

From 0604afcda795b6a071895ea44f5b22675b578966 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 12 Feb 2021 06:01:04 -0800
Subject: [PATCH 051/140] mount: remove unnecessary flush on release

---
 weed/filesys/filehandle.go | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index 85f64d292..4ed0e6c2b 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -192,11 +192,6 @@ func (fh *FileHandle) Release(ctx context.Context, req *fuse.ReleaseRequest) err
 
 	if fh.f.isOpen == 1 {
 
-		if err := fh.doFlush(ctx, req.Header); err != nil {
-			glog.Errorf("Release doFlush %s: %v", fh.f.Name, err)
-			return err
-		}
-
 		fh.f.isOpen--
 
 		fh.f.wfs.ReleaseHandle(fh.f.fullpath(), fuse.HandleID(fh.handle))

From 4ce56bac0849a6ecfc76bc26b68f0b99339b5d50 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 12 Feb 2021 06:44:26 -0800
Subject: [PATCH 052/140] fix format error

---
 weed/util/fasthttp_util.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/weed/util/fasthttp_util.go b/weed/util/fasthttp_util.go
index 59fde37d0..82575af98 100644
--- a/weed/util/fasthttp_util.go
+++ b/weed/util/fasthttp_util.go
@@ -63,7 +63,7 @@ func FastGet(url string) ([]byte, bool, error) {
 
 	if res.StatusCode() >= 400 {
 		retryable := res.StatusCode() >= 500
-		return nil, retryable, fmt.Errorf("%s: %s", url, res.StatusCode())
+		return nil, retryable, fmt.Errorf("%s: %d", url, res.StatusCode())
 	}
 	if err != nil {
 		return nil, false, err
@@ -96,7 +96,7 @@ func FastReadUrlAsStream(fileUrl string, cipherKey []byte, isContentGzipped bool
 
 	if res.StatusCode() >= 400 {
 		retryable = res.StatusCode() >= 500
-		return retryable, fmt.Errorf("%s: %s", fileUrl, res.StatusCode())
+		return retryable, fmt.Errorf("%s: %d", fileUrl, res.StatusCode())
 	}
 
 	contentEncoding := res.Header.Peek("Content-Encoding")

From 712b3e9e53e116f58399fe30cd7038b234a5832b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 13:39:37 -0800
Subject: [PATCH 053/140] mount: release need to avoid nil reader

fix https://github.com/chrislusf/seaweedfs/issues/1803
---
 weed/filesys/filehandle.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index 4ed0e6c2b..fb073c9cd 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -196,7 +196,9 @@ func (fh *FileHandle) Release(ctx context.Context, req *fuse.ReleaseRequest) err
 
 		fh.f.wfs.ReleaseHandle(fh.f.fullpath(), fuse.HandleID(fh.handle))
 		if closer, ok := fh.f.reader.(io.Closer); ok {
-			closer.Close()
+			if closer != nil {
+				closer.Close()
+			}
 		}
 		fh.f.reader = nil
 	}

From 4bd8a692d80801f3864cf9ce4325908529a0f6ef Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 13:50:14 -0800
Subject: [PATCH 054/140] disk type can be generic tags

---
 weed/command/mount_std.go                            | 6 +-----
 weed/command/volume.go                               | 6 +-----
 weed/server/master_grpc_server_volume.go             | 5 +----
 weed/server/master_server_handlers_admin.go          | 5 +----
 weed/storage/{volume_type.go => volume_disk_type.go} | 9 ++++++---
 weed/topology/topology.go                            | 6 +++---
 weed/topology/topology_event_handling.go             | 4 ++--
 7 files changed, 15 insertions(+), 26 deletions(-)
 rename weed/storage/{volume_type.go => volume_disk_type.go} (64%)

diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index e2aa7e7d4..56338e327 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -169,11 +169,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		mountRoot = mountRoot[0 : len(mountRoot)-1]
 	}
 
-	diskType, err := storage.ToDiskType(*option.diskType)
-	if err != nil {
-		fmt.Printf("failed to parse volume type: %v\n", err)
-		return false
-	}
+	diskType := storage.ToDiskType(*option.diskType)
 
 	seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
 		MountDirectory:     dir,
diff --git a/weed/command/volume.go b/weed/command/volume.go
index fa7dcaa06..9fadcf7df 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -173,11 +173,7 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 	var diskTypes []storage.DiskType
 	diskTypeStrings := strings.Split(*v.diskType, ",")
 	for _, diskTypeString := range diskTypeStrings {
-		if diskType, err := storage.ToDiskType(diskTypeString); err == nil {
-			diskTypes = append(diskTypes, diskType)
-		} else {
-			glog.Fatalf("failed to parse volume type: %v", err)
-		}
+		diskTypes = append(diskTypes, storage.ToDiskType(diskTypeString))
 	}
 	if len(diskTypes) == 1 && len(v.folders) > 1 {
 		for i := 0; i < len(v.folders)-1; i++ {
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index f1d65896a..deac3027c 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -61,10 +61,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 	if err != nil {
 		return nil, err
 	}
-	diskType, err := storage.ToDiskType(req.DiskType)
-	if err != nil {
-		return nil, err
-	}
+	diskType := storage.ToDiskType(req.DiskType)
 
 	option := &topology.VolumeGrowOption{
 		Collection:         req.Collection,
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 7b1ec1f87..28737324c 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -158,10 +158,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 	if err != nil {
 		return nil, err
 	}
-	diskType, err := storage.ToDiskType(r.FormValue("disk"))
-	if err != nil {
-		return nil, err
-	}
+	diskType := storage.ToDiskType(r.FormValue("disk"))
 
 	preallocate := ms.preallocateSize
 	if r.FormValue("preallocate") != "" {
diff --git a/weed/storage/volume_type.go b/weed/storage/volume_disk_type.go
similarity index 64%
rename from weed/storage/volume_type.go
rename to weed/storage/volume_disk_type.go
index 3e8d5ffb5..e97002120 100644
--- a/weed/storage/volume_type.go
+++ b/weed/storage/volume_disk_type.go
@@ -1,6 +1,8 @@
 package storage
 
-import "fmt"
+import (
+	"strings"
+)
 
 type DiskType string
 
@@ -9,7 +11,8 @@ const (
 	SsdType                = "ssd"
 )
 
-func ToDiskType(vt string) (diskType DiskType, err error) {
+func ToDiskType(vt string) (diskType DiskType) {
+	vt = strings.ToLower(vt)
 	diskType = HardDriveType
 	switch vt {
 	case "", "hdd":
@@ -17,7 +20,7 @@ func ToDiskType(vt string) (diskType DiskType, err error) {
 	case "ssd":
 		diskType = SsdType
 	default:
-		err = fmt.Errorf("parse DiskType %s: expecting hdd or ssd\n", vt)
+		diskType = DiskType(vt)
 	}
 	return
 }
diff --git a/weed/topology/topology.go b/weed/topology/topology.go
index 486394f7a..220be4e88 100644
--- a/weed/topology/topology.go
+++ b/weed/topology/topology.go
@@ -188,14 +188,14 @@ func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPl
 }
 
 func (t *Topology) RegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
-	diskType, _ := storage.ToDiskType(v.DiskType)
+	diskType := storage.ToDiskType(v.DiskType)
 	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	vl.RegisterVolume(&v, dn)
 	vl.EnsureCorrectWritables(&v)
 }
 func (t *Topology) UnRegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
 	glog.Infof("removing volume info: %+v", v)
-	diskType, _ := storage.ToDiskType(v.DiskType)
+	diskType := storage.ToDiskType(v.DiskType)
 	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	volumeLayout.UnRegisterVolume(&v, dn)
 	if volumeLayout.isEmpty() {
@@ -235,7 +235,7 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 		t.UnRegisterVolumeLayout(v, dn)
 	}
 	for _, v := range changedVolumes {
-		diskType, _ := storage.ToDiskType(v.DiskType)
+		diskType := storage.ToDiskType(v.DiskType)
 		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 		vl.EnsureCorrectWritables(&v)
 	}
diff --git a/weed/topology/topology_event_handling.go b/weed/topology/topology_event_handling.go
index 5b9facc14..d4076af5d 100644
--- a/weed/topology/topology_event_handling.go
+++ b/weed/topology/topology_event_handling.go
@@ -37,7 +37,7 @@ func (t *Topology) StartRefreshWritableVolumes(grpcDialOption grpc.DialOption, g
 	}()
 }
 func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
-	diskType, _ := storage.ToDiskType(volumeInfo.DiskType)
+	diskType := storage.ToDiskType(volumeInfo.DiskType)
 	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, diskType)
 	if !vl.SetVolumeCapacityFull(volumeInfo.Id) {
 		return false
@@ -56,7 +56,7 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 	for _, v := range dn.GetVolumes() {
 		glog.V(0).Infoln("Removing Volume", v.Id, "from the dead volume server", dn.Id())
-		diskType, _ := storage.ToDiskType(v.DiskType)
+		diskType := storage.ToDiskType(v.DiskType)
 		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 		vl.SetVolumeUnavailable(dn, v.Id)
 	}

From 7ce647f27e756b8f09c0dc0c7ca687e243d91ae0 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 15:42:42 -0800
Subject: [PATCH 055/140] support customizable disk type

---
 docker/compose/local-cluster-compose.yml    | 6 +++---
 weed/server/volume_server_handlers_admin.go | 4 ++--
 weed/server/volume_server_handlers_ui.go    | 2 +-
 weed/server/volume_server_ui/templates.go   | 4 +++-
 weed/storage/disk_location.go               | 7 -------
 weed/storage/store.go                       | 1 +
 weed/storage/volume_disk_type.go            | 7 +++++++
 7 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/docker/compose/local-cluster-compose.yml b/docker/compose/local-cluster-compose.yml
index 89a1ed0cb..82095ae18 100644
--- a/docker/compose/local-cluster-compose.yml
+++ b/docker/compose/local-cluster-compose.yml
@@ -24,7 +24,7 @@ services:
     ports:
       - 8080:8080
       - 18080:18080
-    command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8080 -ip=volume1 -publicUrl=localhost:8080'
+    command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8080 -ip=volume1 -publicUrl=localhost:8080 -preStopSeconds=1 -disk=ssd1'
     depends_on:
       - master0
       - master1
@@ -34,7 +34,7 @@ services:
     ports:
       - 8082:8082
       - 18082:18082
-    command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8082 -ip=volume2 -publicUrl=localhost:8082'
+    command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8082 -ip=volume2 -publicUrl=localhost:8082 -preStopSeconds=1 -disk=ssd1'
     depends_on:
       - master0
       - master1
@@ -44,7 +44,7 @@ services:
     ports:
       - 8083:8083
       - 18083:18083
-    command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8083 -ip=volume3 -publicUrl=localhost:8083'
+    command: 'volume -mserver="master0:9333,master1:9334,master2:9335" -port=8083 -ip=volume3 -publicUrl=localhost:8083 -preStopSeconds=1'
     depends_on:
       - master0
       - master1
diff --git a/weed/server/volume_server_handlers_admin.go b/weed/server/volume_server_handlers_admin.go
index 29bd70d71..7e6c06871 100644
--- a/weed/server/volume_server_handlers_admin.go
+++ b/weed/server/volume_server_handlers_admin.go
@@ -17,7 +17,7 @@ func (vs *VolumeServer) statusHandler(w http.ResponseWriter, r *http.Request) {
 	for _, loc := range vs.store.Locations {
 		if dir, e := filepath.Abs(loc.Directory); e == nil {
 			newDiskStatus := stats.NewDiskStatus(dir)
-			newDiskStatus.DiskType = loc.GetDiskType()
+			newDiskStatus.DiskType = loc.DiskType.String()
 			ds = append(ds, newDiskStatus)
 		}
 	}
@@ -34,7 +34,7 @@ func (vs *VolumeServer) statsDiskHandler(w http.ResponseWriter, r *http.Request)
 	for _, loc := range vs.store.Locations {
 		if dir, e := filepath.Abs(loc.Directory); e == nil {
 			newDiskStatus := stats.NewDiskStatus(dir)
-			newDiskStatus.DiskType = loc.GetDiskType()
+			newDiskStatus.DiskType = loc.DiskType.String()
 			ds = append(ds, newDiskStatus)
 		}
 	}
diff --git a/weed/server/volume_server_handlers_ui.go b/weed/server/volume_server_handlers_ui.go
index 95c7549d2..437e5c45d 100644
--- a/weed/server/volume_server_handlers_ui.go
+++ b/weed/server/volume_server_handlers_ui.go
@@ -20,7 +20,7 @@ func (vs *VolumeServer) uiStatusHandler(w http.ResponseWriter, r *http.Request)
 	for _, loc := range vs.store.Locations {
 		if dir, e := filepath.Abs(loc.Directory); e == nil {
 			newDiskStatus := stats.NewDiskStatus(dir)
-			newDiskStatus.DiskType = loc.GetDiskType()
+			newDiskStatus.DiskType = loc.DiskType.String()
 			ds = append(ds, newDiskStatus)
 		}
 	}
diff --git a/weed/server/volume_server_ui/templates.go b/weed/server/volume_server_ui/templates.go
index 2a93c3441..6a8bb6f55 100644
--- a/weed/server/volume_server_ui/templates.go
+++ b/weed/server/volume_server_ui/templates.go
@@ -69,7 +69,7 @@ var StatusTpl = template.Must(template.New("status").Funcs(funcMap).Parse(`<!DOC
             <thead>
               <tr>
               <th>Path</th>
-              <th>Type</th>
+              <th>Disk</th>
               <th>Total</th>
               <th>Free</th>
               <th>Usage</th>
@@ -129,6 +129,7 @@ var StatusTpl = template.Must(template.New("status").Funcs(funcMap).Parse(`<!DOC
             <tr>
               <th>Id</th>
               <th>Collection</th>
+              <th>Disk</th>
               <th>Data Size</th>
               <th>Files</th>
               <th>Trash</th>
@@ -141,6 +142,7 @@ var StatusTpl = template.Must(template.New("status").Funcs(funcMap).Parse(`<!DOC
             <tr>
               <td><code>{{ .Id }}</code></td>
               <td>{{ .Collection }}</td>
+              <td>{{ .DiskType }}</td>
               <td>{{ bytesToHumanReadable .Size }}</td>
               <td>{{ .FileCount }}</td>
               <td>{{ .DeleteCount }} / {{bytesToHumanReadable .DeletedByteCount}}</td>
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index a7be3a559..7292c23f6 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -373,10 +373,3 @@ func (l *DiskLocation) CheckDiskSpace() {
 	}
 
 }
-
-func (l *DiskLocation) GetDiskType() string {
-	if l.DiskType == SsdType {
-		return "SSD"
-	}
-	return "HDD"
-}
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 482e8998c..4bb05649c 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -173,6 +173,7 @@ func collectStatForOneVolume(vid needle.VolumeId, v *Volume) (s *VolumeInfo) {
 		ReadOnly:         v.IsReadOnly(),
 		Ttl:              v.Ttl,
 		CompactRevision:  uint32(v.CompactionRevision),
+		DiskType:         v.DiskType().String(),
 	}
 	s.RemoteStorageName, s.RemoteStorageKey = v.RemoteStorageNameKey()
 
diff --git a/weed/storage/volume_disk_type.go b/weed/storage/volume_disk_type.go
index e97002120..4d14ada63 100644
--- a/weed/storage/volume_disk_type.go
+++ b/weed/storage/volume_disk_type.go
@@ -24,3 +24,10 @@ func ToDiskType(vt string) (diskType DiskType) {
 	}
 	return
 }
+
+func (diskType DiskType) String() string{
+	if diskType == "" {
+		return "hdd"
+	}
+	return string(diskType)
+}

From ef76365ec211e1af5b8085a2496c8d9941316e9e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 15:47:08 -0800
Subject: [PATCH 056/140] adjust help message

---
 weed/command/benchmark.go          | 2 +-
 weed/command/filer_copy.go         | 2 +-
 weed/command/filer_sync.go         | 4 ++--
 weed/command/mount.go              | 2 +-
 weed/command/server.go             | 2 +-
 weed/command/upload.go             | 2 +-
 weed/command/volume.go             | 2 +-
 weed/shell/command_fs_configure.go | 2 +-
 weed/shell/command_volume_move.go  | 2 +-
 9 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index c3ca6370a..0c8c3b1c0 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -63,7 +63,7 @@ func init() {
 	b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
 	b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
 	b.replication = cmdBenchmark.Flag.String("replication", "000", "replication type")
-	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
 	b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	b.fsync = cmdBenchmark.Flag.Bool("fsync", false, "flush data to disk after write")
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 6b8902ca6..8be1b09ba 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -55,7 +55,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index fce048bde..f8beb6fda 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -58,8 +58,8 @@ func init() {
 	syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
 	syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
 	syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
-	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd] choose between hard drive or solid state drive on filer A")
-	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd] choose between hard drive or solid state drive on filer B")
+	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer A")
+	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer B")
 	syncOptions.aProxyByFiler = cmdFilerSynchronize.Flag.Bool("a.filerProxy", false, "read and write file chunks by filer A instead of volume servers")
 	syncOptions.bProxyByFiler = cmdFilerSynchronize.Flag.Bool("b.filerProxy", false, "read and write file chunks by filer B instead of volume servers")
 	syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
diff --git a/weed/command/mount.go b/weed/command/mount.go
index a99ee5027..ea439af7c 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -42,7 +42,7 @@ func init() {
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
 	mountOptions.collection = cmdMount.Flag.String("collection", "", "collection to create the files")
 	mountOptions.replication = cmdMount.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
-	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	mountOptions.ttlSec = cmdMount.Flag.Int("ttl", 0, "file ttl in seconds")
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
 	mountOptions.concurrentWriters = cmdMount.Flag.Int("concurrentWriters", 128, "limit concurrent goroutine writers if not 0")
diff --git a/weed/command/server.go b/weed/command/server.go
index 3f1ca321e..f89230738 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -102,7 +102,7 @@ func init() {
 	serverOptions.v.port = cmdServer.Flag.Int("volume.port", 8080, "volume server http listen port")
 	serverOptions.v.publicPort = cmdServer.Flag.Int("volume.port.public", 0, "volume server public port")
 	serverOptions.v.indexType = cmdServer.Flag.String("volume.index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	serverOptions.v.fixJpgOrientation = cmdServer.Flag.Bool("volume.images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	serverOptions.v.readRedirect = cmdServer.Flag.Bool("volume.read.redirect", true, "Redirect moved or non-local volumes.")
 	serverOptions.v.compactionMBPerSecond = cmdServer.Flag.Int("volume.compactionMBps", 0, "limit compaction speed in mega bytes per second")
diff --git a/weed/command/upload.go b/weed/command/upload.go
index 002c3032f..fba8e85a1 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -41,7 +41,7 @@ func init() {
 	upload.replication = cmdUpload.Flag.String("replication", "", "replication type")
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
-	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
 	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 	upload.usePublicUrl = cmdUpload.Flag.Bool("usePublicUrl", false, "upload to public url from volume server")
diff --git a/weed/command/volume.go b/weed/command/volume.go
index 9fadcf7df..9f1951206 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -77,7 +77,7 @@ func init() {
 	v.dataCenter = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
diff --git a/weed/shell/command_fs_configure.go b/weed/shell/command_fs_configure.go
index a891c1b47..02cd7ac69 100644
--- a/weed/shell/command_fs_configure.go
+++ b/weed/shell/command_fs_configure.go
@@ -52,7 +52,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 	collection := fsConfigureCommand.String("collection", "", "assign writes to this collection")
 	replication := fsConfigureCommand.String("replication", "", "assign writes with this replication")
 	ttl := fsConfigureCommand.String("ttl", "", "assign writes with this ttl")
-	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd] choose between hard drive or solid state drive")
+	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
 	volumeGrowthCount := fsConfigureCommand.Int("volumeGrowthCount", 0, "the number of physical volumes to add if no writable volumes")
 	isDelete := fsConfigureCommand.Bool("delete", false, "delete the configuration by locationPrefix")
diff --git a/weed/shell/command_volume_move.go b/weed/shell/command_volume_move.go
index 73490f4de..a1b2d8495 100644
--- a/weed/shell/command_volume_move.go
+++ b/weed/shell/command_volume_move.go
@@ -56,7 +56,7 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *CommandEnv, writer io.
 	volumeIdInt := volMoveCommand.Int("volumeId", 0, "the volume id")
 	sourceNodeStr := volMoveCommand.String("source", "", "the source volume server <host>:<port>")
 	targetNodeStr := volMoveCommand.String("target", "", "the target volume server <host>:<port>")
-	diskTypeStr := volMoveCommand.String("disk", "", "[ssd|hdd] overwrite the original disk type")
+	diskTypeStr := volMoveCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	if err = volMoveCommand.Parse(args); err != nil {
 		return nil
 	}

From 881f05f5a002818589af25ed0c479dbcbf65becc Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 16:13:52 -0800
Subject: [PATCH 057/140] adjust help message

---
 weed/shell/command_volume_move.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/weed/shell/command_volume_move.go b/weed/shell/command_volume_move.go
index a1b2d8495..84f33db34 100644
--- a/weed/shell/command_volume_move.go
+++ b/weed/shell/command_volume_move.go
@@ -29,7 +29,7 @@ func (c *commandVolumeMove) Help() string {
 	return `move a live volume from one volume server to another volume server
 
 	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id>
-	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [ssd|hdd]
+	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [hdd|ssd|<tag>]
 
 	This command move a live volume from one volume server to another volume server. Here are the steps:
 
@@ -41,7 +41,7 @@ func (c *commandVolumeMove) Help() string {
 		Now the master will mark this volume id as writable.
 	5. This command asks the source volume server to delete the source volume
 
-	The option "-disk [ssd|hdd]" can be used to change the volume disk type.
+	The option "-disk [hdd|ssd|<tag>]" can be used to change the volume disk type.
 
 `
 }

From 861f8fab9b38af4ddc2fcc0830e49ef91d795452 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 22:34:12 -0800
Subject: [PATCH 058/140] refactoring

---
 weed/shell/command_volume_balance.go | 47 ++++++++--------------------
 1 file changed, 13 insertions(+), 34 deletions(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index 00308ebe8..c2c668c90 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -112,6 +112,17 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 
 func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
+	for _, diskType := range []storage.DiskType{storage.HardDriveType, storage.SsdType} {
+		if err := balanceVolumeServersByDiskType(commandEnv, diskType, volumeReplicas, nodes, volumeSizeLimit, collection, applyBalancing); err != nil {
+			return err
+		}
+	}
+	return nil
+
+}
+
+func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType storage.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
+
 	// balance writable hdd volumes
 	// fmt.Fprintf(os.Stdout, "\nbalance collection %s writable hdd volumes\n", collection)
 	for _, n := range nodes {
@@ -121,7 +132,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.DiskType == string(storage.HardDriveType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
+			return v.DiskType == string(diskType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
 		})
 	}
 	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
@@ -137,45 +148,13 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 					return false
 				}
 			}
-			return v.DiskType == string(storage.HardDriveType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
+			return v.DiskType == string(diskType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
 		})
 	}
 	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
 		return err
 	}
 
-	// balance writable ssd volumes
-	// fmt.Fprintf(os.Stdout, "\nbalance collection %s writable ssd volumes\n", collection)
-	for _, n := range nodes {
-		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
-			if collection != "ALL_COLLECTIONS" {
-				if v.Collection != collection {
-					return false
-				}
-			}
-			return v.DiskType == string(storage.SsdType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
-		})
-	}
-	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxSsdVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
-		return err
-	}
-
-	// balance readable ssd volumes
-	// fmt.Fprintf(os.Stdout, "\nbalance collection %s readable ssd volumes\n", collection)
-	for _, n := range nodes {
-		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
-			if collection != "ALL_COLLECTIONS" {
-				if v.Collection != collection {
-					return false
-				}
-			}
-			return v.DiskType == string(storage.SsdType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
-		})
-	}
-	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxSsdVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
-		return err
-	}
-
 	return nil
 }
 

From 876dbe3d26138c26e0e9869874c0d0b18aec7d1e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 13 Feb 2021 23:25:16 -0800
Subject: [PATCH 059/140] collect disk types

---
 weed/shell/command_volume_balance.go | 36 +++++++++++++++++++++-------
 1 file changed, 27 insertions(+), 9 deletions(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index c2c668c90..6dd248844 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -86,6 +86,7 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 
 	volumeServers := collectVolumeServersByDc(resp.TopologyInfo, *dc)
 	volumeReplicas, _ := collectVolumeReplicaLocations(resp)
+	diskTypes := collectVolumeDiskTypes(resp.TopologyInfo)
 
 	if *collection == "EACH_COLLECTION" {
 		collections, err := ListCollectionNames(commandEnv, true, false)
@@ -93,16 +94,16 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 			return err
 		}
 		for _, c := range collections {
-			if err = balanceVolumeServers(commandEnv, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, c, *applyBalancing); err != nil {
+			if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, c, *applyBalancing); err != nil {
 				return err
 			}
 		}
 	} else if *collection == "ALL_COLLECTIONS" {
-		if err = balanceVolumeServers(commandEnv, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, "ALL_COLLECTIONS", *applyBalancing); err != nil {
+		if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, "ALL_COLLECTIONS", *applyBalancing); err != nil {
 			return err
 		}
 	} else {
-		if err = balanceVolumeServers(commandEnv, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, *collection, *applyBalancing); err != nil {
+		if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, *collection, *applyBalancing); err != nil {
 			return err
 		}
 	}
@@ -110,9 +111,9 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 	return nil
 }
 
-func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
+func balanceVolumeServers(commandEnv *CommandEnv, diskTypes []storage.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
-	for _, diskType := range []storage.DiskType{storage.HardDriveType, storage.SsdType} {
+	for _, diskType := range diskTypes {
 		if err := balanceVolumeServersByDiskType(commandEnv, diskType, volumeReplicas, nodes, volumeSizeLimit, collection, applyBalancing); err != nil {
 			return err
 		}
@@ -123,8 +124,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, volumeReplicas map[uint32][]*V
 
 func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType storage.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
-	// balance writable hdd volumes
-	// fmt.Fprintf(os.Stdout, "\nbalance collection %s writable hdd volumes\n", collection)
+	// balance writable volumes
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -139,8 +139,7 @@ func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType storage.Dis
 		return err
 	}
 
-	// balance readable hdd volumes
-	// fmt.Fprintf(os.Stdout, "\nbalance collection %s readable hdd volumes\n", collection)
+	// balance readable volumes
 	for _, n := range nodes {
 		n.selectVolumes(func(v *master_pb.VolumeInformationMessage) bool {
 			if collection != "ALL_COLLECTIONS" {
@@ -176,6 +175,25 @@ func collectVolumeServersByDc(t *master_pb.TopologyInfo, selectedDataCenter stri
 	return
 }
 
+func collectVolumeDiskTypes(t *master_pb.TopologyInfo) (diskTypes []storage.DiskType) {
+	knownTypes := make(map[string]bool)
+	for _, dc := range t.DataCenterInfos {
+		for _, r := range dc.RackInfos {
+			for _, dn := range r.DataNodeInfos {
+				for _, vi := range dn.VolumeInfos {
+					if _, found := knownTypes[vi.DiskType]; !found {
+						knownTypes[vi.DiskType] = true
+					}
+				}
+			}
+		}
+	}
+	for diskType, _ := range knownTypes {
+		diskTypes = append(diskTypes, storage.ToDiskType(diskType))
+	}
+	return
+}
+
 type Node struct {
 	info            *master_pb.DataNodeInfo
 	selectedVolumes map[uint32]*master_pb.VolumeInformationMessage

From 51b4963e2eaa6caff8ed4702453b9af371cf6914 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Sun, 14 Feb 2021 13:14:36 +0200
Subject: [PATCH 060/140] postgres2 & memsql2

add escape (quote identifiers) for the dynamic sql
so tables (collections) with special characters will work.
---
 weed/command/scaffold.go                | 12 ++++++------
 weed/filer/mysql/mysql_sql_gen.go       | 14 +++++++-------
 weed/filer/mysql/mysql_store.go         |  2 +-
 weed/filer/mysql2/mysql2_store.go       |  2 +-
 weed/filer/postgres/postgres_sql_gen.go | 20 ++++++++++----------
 weed/filer/postgres/postgres_store.go   |  2 +-
 weed/filer/postgres2/postgres2_store.go |  2 +-
 7 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/weed/command/scaffold.go b/weed/command/scaffold.go
index 58143a0ad..f838f7791 100644
--- a/weed/command/scaffold.go
+++ b/weed/command/scaffold.go
@@ -124,11 +124,11 @@ interpolateParams = false
 [mysql2]  # or memsql, tidb
 enabled = false
 createTable = """
-  CREATE TABLE IF NOT EXISTS %s (
-    dirhash BIGINT, 
-    name VARCHAR(1000), 
-    directory TEXT, 
-    meta LONGBLOB, 
+  CREATE TABLE IF NOT EXISTS ` + "`%s`" + ` (
+    dirhash BIGINT,
+    name VARCHAR(1000),
+    directory TEXT,
+    meta LONGBLOB,
     PRIMARY KEY (dirhash, name)
   ) DEFAULT CHARSET=utf8;
 """
@@ -164,7 +164,7 @@ connection_max_open = 100
 [postgres2]
 enabled = false
 createTable = """
-  CREATE TABLE IF NOT EXISTS %s (
+  CREATE TABLE IF NOT EXISTS "%s" (
     dirhash   BIGINT, 
     name      VARCHAR(65535), 
     directory VARCHAR(65535), 
diff --git a/weed/filer/mysql/mysql_sql_gen.go b/weed/filer/mysql/mysql_sql_gen.go
index 057484c37..4213cf965 100644
--- a/weed/filer/mysql/mysql_sql_gen.go
+++ b/weed/filer/mysql/mysql_sql_gen.go
@@ -16,31 +16,31 @@ var (
 )
 
 func (gen *SqlGenMysql) GetSqlInsert(bucket string) string {
-	return fmt.Sprintf("INSERT INTO %s (dirhash,name,directory,meta) VALUES(?,?,?,?)", bucket)
+	return fmt.Sprintf("INSERT INTO `%s` (dirhash,name,directory,meta) VALUES(?,?,?,?)", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlUpdate(bucket string) string {
-	return fmt.Sprintf("UPDATE %s SET meta=? WHERE dirhash=? AND name=? AND directory=?", bucket)
+	return fmt.Sprintf("UPDATE `%s` SET meta=? WHERE dirhash=? AND name=? AND directory=?", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlFind(bucket string) string {
-	return fmt.Sprintf("SELECT meta FROM %s WHERE dirhash=? AND name=? AND directory=?", bucket)
+	return fmt.Sprintf("SELECT meta FROM `%s` WHERE dirhash=? AND name=? AND directory=?", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlDelete(bucket string) string {
-	return fmt.Sprintf("DELETE FROM %s WHERE dirhash=? AND name=? AND directory=?", bucket)
+	return fmt.Sprintf("DELETE FROM `%s` WHERE dirhash=? AND name=? AND directory=?", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlDeleteFolderChildren(bucket string) string {
-	return fmt.Sprintf("DELETE FROM %s WHERE dirhash=? AND directory=?", bucket)
+	return fmt.Sprintf("DELETE FROM `%s` WHERE dirhash=? AND directory=?", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlListExclusive(bucket string) string {
-	return fmt.Sprintf("SELECT NAME, meta FROM %s WHERE dirhash=? AND name>? AND directory=? AND name like ? ORDER BY NAME ASC LIMIT ?", bucket)
+	return fmt.Sprintf("SELECT NAME, meta FROM `%s` WHERE dirhash=? AND name>? AND directory=? AND name like ? ORDER BY NAME ASC LIMIT ?", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlListInclusive(bucket string) string {
-	return fmt.Sprintf("SELECT NAME, meta FROM %s WHERE dirhash=? AND name>=? AND directory=? AND name like ? ORDER BY NAME ASC LIMIT ?", bucket)
+	return fmt.Sprintf("SELECT NAME, meta FROM `%s` WHERE dirhash=? AND name>=? AND directory=? AND name like ? ORDER BY NAME ASC LIMIT ?", bucket)
 }
 
 func (gen *SqlGenMysql) GetSqlCreateTable(bucket string) string {
diff --git a/weed/filer/mysql/mysql_store.go b/weed/filer/mysql/mysql_store.go
index 686628740..23b3bef11 100644
--- a/weed/filer/mysql/mysql_store.go
+++ b/weed/filer/mysql/mysql_store.go
@@ -47,7 +47,7 @@ func (store *MysqlStore) initialize(user, password, hostname string, port int, d
 	store.SupportBucketTable = false
 	store.SqlGenerator = &SqlGenMysql{
 		CreateTableSqlTemplate: "",
-		DropTableSqlTemplate:   "drop table %s",
+		DropTableSqlTemplate: "drop table `%s`",
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
diff --git a/weed/filer/mysql2/mysql2_store.go b/weed/filer/mysql2/mysql2_store.go
index 15216b651..2db7a820d 100644
--- a/weed/filer/mysql2/mysql2_store.go
+++ b/weed/filer/mysql2/mysql2_store.go
@@ -50,7 +50,7 @@ func (store *MysqlStore2) initialize(createTable, user, password, hostname strin
 	store.SupportBucketTable = true
 	store.SqlGenerator = &mysql.SqlGenMysql{
 		CreateTableSqlTemplate: createTable,
-		DropTableSqlTemplate:   "drop table %s",
+		DropTableSqlTemplate:   "drop table `%s`",
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
diff --git a/weed/filer/postgres/postgres_sql_gen.go b/weed/filer/postgres/postgres_sql_gen.go
index 284cf254b..480f433ef 100644
--- a/weed/filer/postgres/postgres_sql_gen.go
+++ b/weed/filer/postgres/postgres_sql_gen.go
@@ -1,10 +1,10 @@
 package postgres
 
 import (
-	"fmt"
+	`fmt`
 
-	"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
-	_ "github.com/lib/pq"
+	`github.com/chrislusf/seaweedfs/weed/filer/abstract_sql`
+	_ `github.com/lib/pq`
 )
 
 type SqlGenPostgres struct {
@@ -17,31 +17,31 @@ var (
 )
 
 func (gen *SqlGenPostgres) GetSqlInsert(bucket string) string {
-	return fmt.Sprintf("INSERT INTO %s (dirhash,name,directory,meta) VALUES($1,$2,$3,$4)", bucket)
+	return fmt.Sprintf(`INSERT INTO "%s" (dirhash,name,directory,meta) VALUES($1,$2,$3,$4)`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlUpdate(bucket string) string {
-	return fmt.Sprintf("UPDATE %s SET meta=$1 WHERE dirhash=$2 AND name=$3 AND directory=$4", bucket)
+	return fmt.Sprintf(`UPDATE "%s" SET meta=$1 WHERE dirhash=$2 AND name=$3 AND directory=$4`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlFind(bucket string) string {
-	return fmt.Sprintf("SELECT meta FROM %s WHERE dirhash=$1 AND name=$2 AND directory=$3", bucket)
+	return fmt.Sprintf(`SELECT meta FROM "%s" WHERE dirhash=$1 AND name=$2 AND directory=$3`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlDelete(bucket string) string {
-	return fmt.Sprintf("DELETE FROM %s WHERE dirhash=$1 AND name=$2 AND directory=$3", bucket)
+	return fmt.Sprintf(`DELETE FROM "%s" WHERE dirhash=$1 AND name=$2 AND directory=$3`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlDeleteFolderChildren(bucket string) string {
-	return fmt.Sprintf("DELETE FROM %s WHERE dirhash=$1 AND directory=$2", bucket)
+	return fmt.Sprintf(`DELETE FROM "%s" WHERE dirhash=$1 AND directory=$2`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlListExclusive(bucket string) string {
-	return fmt.Sprintf("SELECT NAME, meta FROM %s WHERE dirhash=$1 AND name>$2 AND directory=$3 AND name like $4 ORDER BY NAME ASC LIMIT $5", bucket)
+	return fmt.Sprintf(`SELECT NAME, meta FROM "%s" WHERE dirhash=$1 AND name>$2 AND directory=$3 AND name like $4 ORDER BY NAME ASC LIMIT $5`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlListInclusive(bucket string) string {
-	return fmt.Sprintf("SELECT NAME, meta FROM %s WHERE dirhash=$1 AND name>=$2 AND directory=$3 AND name like $4 ORDER BY NAME ASC LIMIT $5", bucket)
+	return fmt.Sprintf(`SELECT NAME, meta FROM "%s" WHERE dirhash=$1 AND name>=$2 AND directory=$3 AND name like $4 ORDER BY NAME ASC LIMIT $5`, bucket)
 }
 
 func (gen *SqlGenPostgres) GetSqlCreateTable(bucket string) string {
diff --git a/weed/filer/postgres/postgres_store.go b/weed/filer/postgres/postgres_store.go
index 27c6278c7..6e0d05315 100644
--- a/weed/filer/postgres/postgres_store.go
+++ b/weed/filer/postgres/postgres_store.go
@@ -45,7 +45,7 @@ func (store *PostgresStore) initialize(user, password, hostname string, port int
 	store.SupportBucketTable = false
 	store.SqlGenerator = &SqlGenPostgres{
 		CreateTableSqlTemplate: "",
-		DropTableSqlTemplate:   "drop table %s",
+		DropTableSqlTemplate: `drop table "%s"`,
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, sslmode)
diff --git a/weed/filer/postgres2/postgres2_store.go b/weed/filer/postgres2/postgres2_store.go
index 82552376f..94c760401 100644
--- a/weed/filer/postgres2/postgres2_store.go
+++ b/weed/filer/postgres2/postgres2_store.go
@@ -48,7 +48,7 @@ func (store *PostgresStore2) initialize(createTable, user, password, hostname st
 	store.SupportBucketTable = true
 	store.SqlGenerator = &postgres.SqlGenPostgres{
 		CreateTableSqlTemplate: createTable,
-		DropTableSqlTemplate:   "drop table %s",
+		DropTableSqlTemplate: `drop table "%s"`,
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, sslmode)

From 0bc3a1f9e88baca5f592d50ca028d169c86f0dc8 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 14 Feb 2021 11:38:32 -0800
Subject: [PATCH 061/140] disk type only supports hdd and ssd, not ready for
 random tags yet

---
 weed/command/benchmark.go          | 2 +-
 weed/command/filer_copy.go         | 2 +-
 weed/command/filer_sync.go         | 4 ++--
 weed/command/mount.go              | 2 +-
 weed/command/server.go             | 2 +-
 weed/command/upload.go             | 2 +-
 weed/command/volume.go             | 2 +-
 weed/shell/command_fs_configure.go | 2 +-
 weed/shell/command_volume_move.go  | 6 +++---
 9 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 0c8c3b1c0..370ec9eaf 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -63,7 +63,7 @@ func init() {
 	b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
 	b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
 	b.replication = cmdBenchmark.Flag.String("replication", "000", "replication type")
-	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
 	b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	b.fsync = cmdBenchmark.Flag.Bool("fsync", false, "flush data to disk after write")
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 8be1b09ba..20f00a3eb 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -55,7 +55,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index f8beb6fda..725f7d485 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -58,8 +58,8 @@ func init() {
 	syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
 	syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
 	syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
-	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer A")
-	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer B")
+	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd] hard drive or solid state drive on filer A")
+	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd] hard drive or solid state drive on filer B")
 	syncOptions.aProxyByFiler = cmdFilerSynchronize.Flag.Bool("a.filerProxy", false, "read and write file chunks by filer A instead of volume servers")
 	syncOptions.bProxyByFiler = cmdFilerSynchronize.Flag.Bool("b.filerProxy", false, "read and write file chunks by filer B instead of volume servers")
 	syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
diff --git a/weed/command/mount.go b/weed/command/mount.go
index ea439af7c..aa6d91740 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -42,7 +42,7 @@ func init() {
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
 	mountOptions.collection = cmdMount.Flag.String("collection", "", "collection to create the files")
 	mountOptions.replication = cmdMount.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
-	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	mountOptions.ttlSec = cmdMount.Flag.Int("ttl", 0, "file ttl in seconds")
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
 	mountOptions.concurrentWriters = cmdMount.Flag.Int("concurrentWriters", 128, "limit concurrent goroutine writers if not 0")
diff --git a/weed/command/server.go b/weed/command/server.go
index f89230738..61cac2cc7 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -102,7 +102,7 @@ func init() {
 	serverOptions.v.port = cmdServer.Flag.Int("volume.port", 8080, "volume server http listen port")
 	serverOptions.v.publicPort = cmdServer.Flag.Int("volume.port.public", 0, "volume server public port")
 	serverOptions.v.indexType = cmdServer.Flag.String("volume.index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd] hard drive or solid state drive")
 	serverOptions.v.fixJpgOrientation = cmdServer.Flag.Bool("volume.images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	serverOptions.v.readRedirect = cmdServer.Flag.Bool("volume.read.redirect", true, "Redirect moved or non-local volumes.")
 	serverOptions.v.compactionMBPerSecond = cmdServer.Flag.Int("volume.compactionMBps", 0, "limit compaction speed in mega bytes per second")
diff --git a/weed/command/upload.go b/weed/command/upload.go
index fba8e85a1..85d6e5c09 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -41,7 +41,7 @@ func init() {
 	upload.replication = cmdUpload.Flag.String("replication", "", "replication type")
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
-	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
 	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 	upload.usePublicUrl = cmdUpload.Flag.Bool("usePublicUrl", false, "upload to public url from volume server")
diff --git a/weed/command/volume.go b/weed/command/volume.go
index 9f1951206..a85f9b6be 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -77,7 +77,7 @@ func init() {
 	v.dataCenter = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
diff --git a/weed/shell/command_fs_configure.go b/weed/shell/command_fs_configure.go
index 02cd7ac69..d0db3722a 100644
--- a/weed/shell/command_fs_configure.go
+++ b/weed/shell/command_fs_configure.go
@@ -52,7 +52,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 	collection := fsConfigureCommand.String("collection", "", "assign writes to this collection")
 	replication := fsConfigureCommand.String("replication", "", "assign writes with this replication")
 	ttl := fsConfigureCommand.String("ttl", "", "assign writes with this ttl")
-	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
 	volumeGrowthCount := fsConfigureCommand.Int("volumeGrowthCount", 0, "the number of physical volumes to add if no writable volumes")
 	isDelete := fsConfigureCommand.Bool("delete", false, "delete the configuration by locationPrefix")
diff --git a/weed/shell/command_volume_move.go b/weed/shell/command_volume_move.go
index 84f33db34..f9462beee 100644
--- a/weed/shell/command_volume_move.go
+++ b/weed/shell/command_volume_move.go
@@ -29,7 +29,7 @@ func (c *commandVolumeMove) Help() string {
 	return `move a live volume from one volume server to another volume server
 
 	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id>
-	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [hdd|ssd|<tag>]
+	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [hdd|ssd]
 
 	This command move a live volume from one volume server to another volume server. Here are the steps:
 
@@ -41,7 +41,7 @@ func (c *commandVolumeMove) Help() string {
 		Now the master will mark this volume id as writable.
 	5. This command asks the source volume server to delete the source volume
 
-	The option "-disk [hdd|ssd|<tag>]" can be used to change the volume disk type.
+	The option "-disk [hdd|ssd]" can be used to change the volume disk type.
 
 `
 }
@@ -56,7 +56,7 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *CommandEnv, writer io.
 	volumeIdInt := volMoveCommand.Int("volumeId", 0, "the volume id")
 	sourceNodeStr := volMoveCommand.String("source", "", "the source volume server <host>:<port>")
 	targetNodeStr := volMoveCommand.String("target", "", "the target volume server <host>:<port>")
-	diskTypeStr := volMoveCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	diskTypeStr := volMoveCommand.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	if err = volMoveCommand.Parse(args); err != nil {
 		return nil
 	}

From 7f458d5e78e380890771d925fee3df4f5f692e78 Mon Sep 17 00:00:00 2001
From: LazyDBA247-Anyvision <yonin@anyvision.co>
Date: Mon, 15 Feb 2021 07:45:09 +0200
Subject: [PATCH 062/140] better postgres connection pool management

adding SetConnMaxLifetime configuration (https://golang.org/pkg/database/sql/#DB.SetConnMaxLifetime)
to enable refresh of stale connections.
---
 weed/command/scaffold.go                | 2 ++
 weed/filer/postgres/postgres_store.go   | 5 ++++-
 weed/filer/postgres2/postgres2_store.go | 5 ++++-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/weed/command/scaffold.go b/weed/command/scaffold.go
index f838f7791..993391a42 100644
--- a/weed/command/scaffold.go
+++ b/weed/command/scaffold.go
@@ -160,6 +160,7 @@ schema = ""
 sslmode = "disable"
 connection_max_idle = 100
 connection_max_open = 100
+connection_max_lifetime_seconds = 0
 
 [postgres2]
 enabled = false
@@ -181,6 +182,7 @@ schema = ""
 sslmode = "disable"
 connection_max_idle = 100
 connection_max_open = 100
+connection_max_lifetime_seconds = 0
 
 [cassandra]
 # CREATE TABLE filemeta (
diff --git a/weed/filer/postgres/postgres_store.go b/weed/filer/postgres/postgres_store.go
index 6e0d05315..75d80e44a 100644
--- a/weed/filer/postgres/postgres_store.go
+++ b/weed/filer/postgres/postgres_store.go
@@ -3,6 +3,7 @@ package postgres
 import (
 	"database/sql"
 	"fmt"
+	"time"
 
 	"github.com/chrislusf/seaweedfs/weed/filer"
 	"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
@@ -37,10 +38,11 @@ func (store *PostgresStore) Initialize(configuration util.Configuration, prefix
 		configuration.GetString(prefix+"sslmode"),
 		configuration.GetInt(prefix+"connection_max_idle"),
 		configuration.GetInt(prefix+"connection_max_open"),
+		configuration.GetInt(prefix+"connection_max_lifetime_seconds"),
 	)
 }
 
-func (store *PostgresStore) initialize(user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen int) (err error) {
+func (store *PostgresStore) initialize(user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen, maxLifetimeSeconds int) (err error) {
 
 	store.SupportBucketTable = false
 	store.SqlGenerator = &SqlGenPostgres{
@@ -71,6 +73,7 @@ func (store *PostgresStore) initialize(user, password, hostname string, port int
 
 	store.DB.SetMaxIdleConns(maxIdle)
 	store.DB.SetMaxOpenConns(maxOpen)
+	store.DB.SetConnMaxLifetime(time.Duration(maxLifetimeSeconds) * time.Second)
 
 	if err = store.DB.Ping(); err != nil {
 		return fmt.Errorf("connect to %s error:%v", sqlUrl, err)
diff --git a/weed/filer/postgres2/postgres2_store.go b/weed/filer/postgres2/postgres2_store.go
index 94c760401..44487fd0e 100644
--- a/weed/filer/postgres2/postgres2_store.go
+++ b/weed/filer/postgres2/postgres2_store.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"time"
 
 	"github.com/chrislusf/seaweedfs/weed/filer"
 	"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
@@ -40,10 +41,11 @@ func (store *PostgresStore2) Initialize(configuration util.Configuration, prefix
 		configuration.GetString(prefix+"sslmode"),
 		configuration.GetInt(prefix+"connection_max_idle"),
 		configuration.GetInt(prefix+"connection_max_open"),
+		configuration.GetInt(prefix+"connection_max_lifetime_seconds"),
 	)
 }
 
-func (store *PostgresStore2) initialize(createTable, user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen int) (err error) {
+func (store *PostgresStore2) initialize(createTable, user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen, maxLifetimeSeconds int) (err error) {
 
 	store.SupportBucketTable = true
 	store.SqlGenerator = &postgres.SqlGenPostgres{
@@ -74,6 +76,7 @@ func (store *PostgresStore2) initialize(createTable, user, password, hostname st
 
 	store.DB.SetMaxIdleConns(maxIdle)
 	store.DB.SetMaxOpenConns(maxOpen)
+	store.DB.SetConnMaxLifetime(time.Duration(maxLifetimeSeconds) * time.Second)
 
 	if err = store.DB.Ping(); err != nil {
 		return fmt.Errorf("connect to %s error:%v", sqlUrl, err)

From 8726ef34c1081d62bb0fa7348d56986a81acf9a0 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 14 Feb 2021 22:23:43 -0800
Subject: [PATCH 063/140] 2.25

---
 k8s/seaweedfs/Chart.yaml  | 4 ++--
 k8s/seaweedfs/values.yaml | 2 +-
 weed/util/constants.go    | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/k8s/seaweedfs/Chart.yaml b/k8s/seaweedfs/Chart.yaml
index b890cc666..165fab9bd 100644
--- a/k8s/seaweedfs/Chart.yaml
+++ b/k8s/seaweedfs/Chart.yaml
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.24"
-version: 2.24
+appVersion: "2.25"
+version: 2.25
diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index 273ab21ad..c6b9fc57d 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -4,7 +4,7 @@ global:
   registry: ""
   repository: ""
   imageName: chrislusf/seaweedfs
-  # imageTag: "2.24" - started using {.Chart.appVersion}
+  # imageTag: "2.25" - started using {.Chart.appVersion}
   imagePullPolicy: IfNotPresent
   imagePullSecrets: imagepullsecret
   restartPolicy: Always
diff --git a/weed/util/constants.go b/weed/util/constants.go
index 6001ae78e..3ab70240a 100644
--- a/weed/util/constants.go
+++ b/weed/util/constants.go
@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 24)
+	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 25)
 	COMMIT  = ""
 )
 

From 8b169aa47cc3759d029b1e5f69a2f32690dab13e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 15 Feb 2021 13:38:29 -0800
Subject: [PATCH 064/140] s3: Critical - S3 Delete Multiple Objects, delete the
 bucket

fix https://github.com/chrislusf/seaweedfs/issues/1806
---
 weed/s3api/s3api_object_handlers.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/weed/s3api/s3api_object_handlers.go b/weed/s3api/s3api_object_handlers.go
index 82f0de6b2..19d85c495 100644
--- a/weed/s3api/s3api_object_handlers.go
+++ b/weed/s3api/s3api_object_handlers.go
@@ -185,7 +185,7 @@ func (s3a *S3ApiServer) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *h
 		for _, object := range deleteObjects.Objects {
 
 			lastSeparator := strings.LastIndex(object.ObjectName, "/")
-			parentDirectoryPath, entryName, isDeleteData, isRecursive := "/", object.ObjectName, true, false
+			parentDirectoryPath, entryName, isDeleteData, isRecursive := "", object.ObjectName, true, false
 			if lastSeparator > 0 && lastSeparator+1 < len(object.ObjectName) {
 				entryName = object.ObjectName[lastSeparator+1:]
 				parentDirectoryPath = "/" + object.ObjectName[:lastSeparator]
@@ -208,7 +208,7 @@ func (s3a *S3ApiServer) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *h
 
 		// purge empty folders, only checking folders with deletions
 		for len(directoriesWithDeletion) > 0 {
-			directoriesWithDeletion = doDeleteEmptyDirectories(client, directoriesWithDeletion)
+			directoriesWithDeletion = s3a.doDeleteEmptyDirectories(client, directoriesWithDeletion)
 		}
 
 		return nil
@@ -224,7 +224,7 @@ func (s3a *S3ApiServer) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *h
 
 }
 
-func doDeleteEmptyDirectories(client filer_pb.SeaweedFilerClient, directoriesWithDeletion map[string]int) (newDirectoriesWithDeletion map[string]int) {
+func (s3a *S3ApiServer) doDeleteEmptyDirectories(client filer_pb.SeaweedFilerClient, directoriesWithDeletion map[string]int) (newDirectoriesWithDeletion map[string]int) {
 	var allDirs []string
 	for dir, _ := range directoriesWithDeletion {
 		allDirs = append(allDirs, dir)
@@ -235,6 +235,9 @@ func doDeleteEmptyDirectories(client filer_pb.SeaweedFilerClient, directoriesWit
 	newDirectoriesWithDeletion = make(map[string]int)
 	for _, dir := range allDirs {
 		parentDir, dirName := util.FullPath(dir).DirAndName()
+		if parentDir == s3a.option.BucketsPath {
+			continue
+		}
 		if err := doDeleteEntry(client, parentDir, dirName, false, false); err != nil {
 			glog.V(4).Infof("directory %s has %d deletion but still not empty: %v", dir, directoriesWithDeletion[dir], err)
 		} else {

From 71f0c195157b79223a3c8e35a57da10b7ff0720d Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 15 Feb 2021 13:38:38 -0800
Subject: [PATCH 065/140] 2.26

---
 k8s/seaweedfs/Chart.yaml  |  4 ++--
 k8s/seaweedfs/values.yaml |  2 +-
 weed/filer.toml           | 11 +++++++++++
 weed/util/constants.go    |  2 +-
 4 files changed, 15 insertions(+), 4 deletions(-)
 create mode 100644 weed/filer.toml

diff --git a/k8s/seaweedfs/Chart.yaml b/k8s/seaweedfs/Chart.yaml
index 165fab9bd..a16bb0133 100644
--- a/k8s/seaweedfs/Chart.yaml
+++ b/k8s/seaweedfs/Chart.yaml
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.25"
-version: 2.25
+appVersion: "2.26"
+version: 2.26
diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index c6b9fc57d..6dc182b29 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -4,7 +4,7 @@ global:
   registry: ""
   repository: ""
   imageName: chrislusf/seaweedfs
-  # imageTag: "2.25" - started using {.Chart.appVersion}
+  # imageTag: "2.26" - started using {.Chart.appVersion}
   imagePullPolicy: IfNotPresent
   imagePullSecrets: imagepullsecret
   restartPolicy: Always
diff --git a/weed/filer.toml b/weed/filer.toml
new file mode 100644
index 000000000..c0530b3f1
--- /dev/null
+++ b/weed/filer.toml
@@ -0,0 +1,11 @@
+[elastic7]
+enabled = true
+servers = [
+    "http://localhost:9200",
+]
+username = ""
+password = ""
+sniff_enabled = false
+healthcheck_enabled = false
+# increase the value is recommend, be sure the value in Elastic is greater or equal here
+index.max_result_window = 10000
diff --git a/weed/util/constants.go b/weed/util/constants.go
index 3ab70240a..1900d3d42 100644
--- a/weed/util/constants.go
+++ b/weed/util/constants.go
@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 25)
+	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 26)
 	COMMIT  = ""
 )
 

From b9b5b932c5892f14da6b489a6907ffd8649a3eb5 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 15 Feb 2021 16:19:24 -0800
Subject: [PATCH 066/140] filer: postgres2 mysql2 avoid repeatedly creating
 tables

---
 weed/filer/abstract_sql/abstract_sql_store.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/filer/abstract_sql/abstract_sql_store.go b/weed/filer/abstract_sql/abstract_sql_store.go
index 91b0bc98f..07ce56145 100644
--- a/weed/filer/abstract_sql/abstract_sql_store.go
+++ b/weed/filer/abstract_sql/abstract_sql_store.go
@@ -107,7 +107,7 @@ func (store *AbstractSqlStore) getTxOrDB(ctx context.Context, fullpath util.Full
 		}
 
 		if _, found := store.dbs[bucket]; !found {
-			if err = store.CreateTable(ctx, bucket); err != nil {
+			if err = store.CreateTable(ctx, bucket); err == nil {
 				store.dbs[bucket] = true
 			}
 		}

From f8446b42abd7f3c6c0a298dbbb8641e466891561 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 02:47:02 -0800
Subject: [PATCH 067/140] this can compile now!!!

---
 weed/command/mount_std.go                     |    4 +-
 weed/command/volume.go                        |    5 +-
 weed/filesys/wfs.go                           |    4 +-
 weed/pb/master.proto                          |   44 +-
 weed/pb/master_pb/master.pb.go                | 1566 ++++++++---------
 weed/server/master_grpc_server.go             |   11 +-
 weed/server/master_grpc_server_volume.go      |    8 +-
 weed/server/master_server_handlers_admin.go   |    4 +-
 weed/server/volume_grpc_admin.go              |    3 +-
 weed/server/volume_grpc_client_to_master.go   |    1 -
 weed/server/volume_grpc_copy.go               |    3 +-
 weed/server/volume_grpc_erasure_coding.go     |    2 +-
 weed/server/volume_server.go                  |    3 +-
 weed/shell/command_ec_balance.go              |   17 +-
 weed/shell/command_ec_common.go               |   36 +-
 weed/shell/command_ec_decode.go               |   10 +-
 weed/shell/command_ec_encode.go               |   10 +-
 weed/shell/command_ec_rebuild.go              |   30 +-
 weed/shell/command_volume_balance.go          |   40 +-
 .../command_volume_configure_replication.go   |   10 +-
 weed/shell/command_volume_fix_replication.go  |   26 +-
 weed/shell/command_volume_fsck.go             |   24 +-
 weed/shell/command_volume_list.go             |   36 +-
 weed/shell/command_volume_server_evacuate.go  |   49 +-
 weed/shell/command_volume_tier_download.go    |    8 +-
 weed/shell/command_volume_tier_move.go        |  108 ++
 weed/storage/disk_location.go                 |    5 +-
 weed/storage/disk_location_ec.go              |    4 +-
 weed/storage/erasure_coding/ec_shard.go       |    6 +-
 weed/storage/erasure_coding/ec_volume.go      |    6 +-
 weed/storage/erasure_coding/ec_volume_info.go |    6 +-
 weed/storage/store.go                         |   13 +-
 weed/storage/store_ec.go                      |    2 +
 weed/storage/{ => types}/volume_disk_type.go  |    2 +-
 weed/storage/volume.go                        |    2 +-
 weed/topology/collection.go                   |   10 +-
 weed/topology/data_center.go                  |   15 +-
 weed/topology/data_node.go                    |  161 +-
 weed/topology/data_node_ec.go                 |  128 +-
 weed/topology/disk.go                         |  275 +++
 weed/topology/disk_ec.go                      |   84 +
 weed/topology/node.go                         |  182 +-
 weed/topology/rack.go                         |   21 +-
 weed/topology/topology.go                     |   12 +-
 weed/topology/topology_ec.go                  |    3 +
 weed/topology/topology_event_handling.go      |   23 +-
 weed/topology/topology_map.go                 |   15 +-
 weed/topology/topology_test.go                |    3 +-
 weed/topology/volume_growth.go                |    4 +-
 weed/topology/volume_layout.go                |    5 +-
 50 files changed, 1686 insertions(+), 1363 deletions(-)
 create mode 100644 weed/shell/command_volume_tier_move.go
 rename weed/storage/{ => types}/volume_disk_type.go (96%)
 create mode 100644 weed/topology/disk.go
 create mode 100644 weed/topology/disk_ec.go

diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index 56338e327..a6d562d40 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -5,7 +5,7 @@ package command
 import (
 	"context"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"os"
 	"os/user"
 	"path"
@@ -169,7 +169,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		mountRoot = mountRoot[0 : len(mountRoot)-1]
 	}
 
-	diskType := storage.ToDiskType(*option.diskType)
+	diskType := types.ToDiskType(*option.diskType)
 
 	seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
 		MountDirectory:     dir,
diff --git a/weed/command/volume.go b/weed/command/volume.go
index a85f9b6be..ff951afdc 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -2,6 +2,7 @@ package command
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"net/http"
 	httppprof "net/http/pprof"
 	"os"
@@ -170,10 +171,10 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 	}
 
 	// set disk types
-	var diskTypes []storage.DiskType
+	var diskTypes []types.DiskType
 	diskTypeStrings := strings.Split(*v.diskType, ",")
 	for _, diskTypeString := range diskTypeStrings {
-		diskTypes = append(diskTypes, storage.ToDiskType(diskTypeString))
+		diskTypes = append(diskTypes, types.ToDiskType(diskTypeString))
 	}
 	if len(diskTypes) == 1 && len(v.folders) > 1 {
 		for i := 0; i < len(v.folders)-1; i++ {
diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index b41d76cd6..c6d9080a1 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer"
-	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"math"
 	"os"
@@ -35,7 +35,7 @@ type Option struct {
 	Collection         string
 	Replication        string
 	TtlSec             int32
-	DiskType           storage.DiskType
+	DiskType           types.DiskType
 	ChunkSizeLimit     int64
 	ConcurrentWriters  int
 	CacheDir           string
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 613b794df..6a1758ccc 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -61,8 +61,7 @@ message Heartbeat {
     repeated VolumeEcShardInformationMessage deleted_ec_shards = 18;
     bool has_no_ec_shards = 19;
 
-    uint32 max_volume_count = 4;
-    uint32 max_ssd_volume_count = 20;
+    map<string, uint32> max_volume_counts = 4;
 
 }
 
@@ -105,6 +104,7 @@ message VolumeEcShardInformationMessage {
     uint32 id = 1;
     string collection = 2;
     uint32 ec_index_bits = 3;
+    string disk_type = 4;
 }
 
 message StorageBackend {
@@ -213,8 +213,8 @@ message CollectionDeleteResponse {
 //
 // volume related
 //
-message DataNodeInfo {
-    string id = 1;
+message DiskInfo {
+    string type = 1;
     uint64 volume_count = 2;
     uint64 max_volume_count = 3;
     uint64 free_volume_count = 4;
@@ -222,41 +222,25 @@ message DataNodeInfo {
     repeated VolumeInformationMessage volume_infos = 6;
     repeated VolumeEcShardInformationMessage ec_shard_infos = 7;
     uint64 remote_volume_count = 8;
-    uint64 max_ssd_volume_count = 9;
-    uint64 ssd_volume_count = 10;
+}
+message DataNodeInfo {
+    string id = 1;
+    map<string, DiskInfo> diskInfos = 2;
 }
 message RackInfo {
     string id = 1;
-    uint64 volume_count = 2;
-    uint64 max_volume_count = 3;
-    uint64 free_volume_count = 4;
-    uint64 active_volume_count = 5;
-    repeated DataNodeInfo data_node_infos = 6;
-    uint64 remote_volume_count = 7;
-    uint64 max_ssd_volume_count = 8;
-    uint64 ssd_volume_count = 9;
+    repeated DataNodeInfo data_node_infos = 2;
+    map<string, DiskInfo> diskInfos = 3;
 }
 message DataCenterInfo {
     string id = 1;
-    uint64 volume_count = 2;
-    uint64 max_volume_count = 3;
-    uint64 free_volume_count = 4;
-    uint64 active_volume_count = 5;
-    repeated RackInfo rack_infos = 6;
-    uint64 remote_volume_count = 7;
-    uint64 max_ssd_volume_count = 8;
-    uint64 ssd_volume_count = 9;
+    repeated RackInfo rack_infos = 2;
+    map<string, DiskInfo> diskInfos = 3;
 }
 message TopologyInfo {
     string id = 1;
-    uint64 volume_count = 2;
-    uint64 max_volume_count = 3;
-    uint64 free_volume_count = 4;
-    uint64 active_volume_count = 5;
-    repeated DataCenterInfo data_center_infos = 6;
-    uint64 remote_volume_count = 7;
-    uint64 max_ssd_volume_count = 8;
-    uint64 ssd_volume_count = 9;
+    repeated DataCenterInfo data_center_infos = 2;
+    map<string, DiskInfo> diskInfos = 3;
 }
 message VolumeListRequest {
 }
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 9f59f5c86..9b49d2df5 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -49,11 +49,10 @@ type Heartbeat struct {
 	// erasure coding
 	EcShards []*VolumeEcShardInformationMessage `protobuf:"bytes,16,rep,name=ec_shards,json=ecShards,proto3" json:"ec_shards,omitempty"`
 	// delta erasure coding shards
-	NewEcShards       []*VolumeEcShardInformationMessage `protobuf:"bytes,17,rep,name=new_ec_shards,json=newEcShards,proto3" json:"new_ec_shards,omitempty"`
-	DeletedEcShards   []*VolumeEcShardInformationMessage `protobuf:"bytes,18,rep,name=deleted_ec_shards,json=deletedEcShards,proto3" json:"deleted_ec_shards,omitempty"`
-	HasNoEcShards     bool                               `protobuf:"varint,19,opt,name=has_no_ec_shards,json=hasNoEcShards,proto3" json:"has_no_ec_shards,omitempty"`
-	MaxVolumeCount    uint32                             `protobuf:"varint,4,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
-	MaxSsdVolumeCount uint32                             `protobuf:"varint,20,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
+	NewEcShards     []*VolumeEcShardInformationMessage `protobuf:"bytes,17,rep,name=new_ec_shards,json=newEcShards,proto3" json:"new_ec_shards,omitempty"`
+	DeletedEcShards []*VolumeEcShardInformationMessage `protobuf:"bytes,18,rep,name=deleted_ec_shards,json=deletedEcShards,proto3" json:"deleted_ec_shards,omitempty"`
+	HasNoEcShards   bool                               `protobuf:"varint,19,opt,name=has_no_ec_shards,json=hasNoEcShards,proto3" json:"has_no_ec_shards,omitempty"`
+	MaxVolumeCounts map[string]uint32                  `protobuf:"bytes,4,rep,name=max_volume_counts,json=maxVolumeCounts,proto3" json:"max_volume_counts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
 }
 
 func (x *Heartbeat) Reset() {
@@ -193,18 +192,11 @@ func (x *Heartbeat) GetHasNoEcShards() bool {
 	return false
 }
 
-func (x *Heartbeat) GetMaxVolumeCount() uint32 {
+func (x *Heartbeat) GetMaxVolumeCounts() map[string]uint32 {
 	if x != nil {
-		return x.MaxVolumeCount
+		return x.MaxVolumeCounts
 	}
-	return 0
-}
-
-func (x *Heartbeat) GetMaxSsdVolumeCount() uint32 {
-	if x != nil {
-		return x.MaxSsdVolumeCount
-	}
-	return 0
+	return nil
 }
 
 type HeartbeatResponse struct {
@@ -540,6 +532,7 @@ type VolumeEcShardInformationMessage struct {
 	Id          uint32 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
 	EcIndexBits uint32 `protobuf:"varint,3,opt,name=ec_index_bits,json=ecIndexBits,proto3" json:"ec_index_bits,omitempty"`
+	DiskType    string `protobuf:"bytes,4,opt,name=disk_type,json=diskType,proto3" json:"disk_type,omitempty"`
 }
 
 func (x *VolumeEcShardInformationMessage) Reset() {
@@ -595,6 +588,13 @@ func (x *VolumeEcShardInformationMessage) GetEcIndexBits() uint32 {
 	return 0
 }
 
+func (x *VolumeEcShardInformationMessage) GetDiskType() string {
+	if x != nil {
+		return x.DiskType
+	}
+	return ""
+}
+
 type StorageBackend struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1622,12 +1622,12 @@ func (*CollectionDeleteResponse) Descriptor() ([]byte, []int) {
 //
 // volume related
 //
-type DataNodeInfo struct {
+type DiskInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                string                             `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Type              string                             `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
 	VolumeCount       uint64                             `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
 	MaxVolumeCount    uint64                             `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
 	FreeVolumeCount   uint64                             `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
@@ -1635,14 +1635,109 @@ type DataNodeInfo struct {
 	VolumeInfos       []*VolumeInformationMessage        `protobuf:"bytes,6,rep,name=volume_infos,json=volumeInfos,proto3" json:"volume_infos,omitempty"`
 	EcShardInfos      []*VolumeEcShardInformationMessage `protobuf:"bytes,7,rep,name=ec_shard_infos,json=ecShardInfos,proto3" json:"ec_shard_infos,omitempty"`
 	RemoteVolumeCount uint64                             `protobuf:"varint,8,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
-	MaxSsdVolumeCount uint64                             `protobuf:"varint,9,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
-	SsdVolumeCount    uint64                             `protobuf:"varint,10,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
+}
+
+func (x *DiskInfo) Reset() {
+	*x = DiskInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[22]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DiskInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DiskInfo) ProtoMessage() {}
+
+func (x *DiskInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[22]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DiskInfo.ProtoReflect.Descriptor instead.
+func (*DiskInfo) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{22}
+}
+
+func (x *DiskInfo) GetType() string {
+	if x != nil {
+		return x.Type
+	}
+	return ""
+}
+
+func (x *DiskInfo) GetVolumeCount() uint64 {
+	if x != nil {
+		return x.VolumeCount
+	}
+	return 0
+}
+
+func (x *DiskInfo) GetMaxVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxVolumeCount
+	}
+	return 0
+}
+
+func (x *DiskInfo) GetFreeVolumeCount() uint64 {
+	if x != nil {
+		return x.FreeVolumeCount
+	}
+	return 0
+}
+
+func (x *DiskInfo) GetActiveVolumeCount() uint64 {
+	if x != nil {
+		return x.ActiveVolumeCount
+	}
+	return 0
+}
+
+func (x *DiskInfo) GetVolumeInfos() []*VolumeInformationMessage {
+	if x != nil {
+		return x.VolumeInfos
+	}
+	return nil
+}
+
+func (x *DiskInfo) GetEcShardInfos() []*VolumeEcShardInformationMessage {
+	if x != nil {
+		return x.EcShardInfos
+	}
+	return nil
+}
+
+func (x *DiskInfo) GetRemoteVolumeCount() uint64 {
+	if x != nil {
+		return x.RemoteVolumeCount
+	}
+	return 0
+}
+
+type DataNodeInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id        string               `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	DiskInfos map[string]*DiskInfo `protobuf:"bytes,2,rep,name=diskInfos,proto3" json:"diskInfos,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (x *DataNodeInfo) Reset() {
 	*x = DataNodeInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[22]
+		mi := &file_master_proto_msgTypes[23]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1655,7 +1750,7 @@ func (x *DataNodeInfo) String() string {
 func (*DataNodeInfo) ProtoMessage() {}
 
 func (x *DataNodeInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[22]
+	mi := &file_master_proto_msgTypes[23]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1668,7 +1763,7 @@ func (x *DataNodeInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DataNodeInfo.ProtoReflect.Descriptor instead.
 func (*DataNodeInfo) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{22}
+	return file_master_proto_rawDescGZIP(), []int{23}
 }
 
 func (x *DataNodeInfo) GetId() string {
@@ -1678,89 +1773,27 @@ func (x *DataNodeInfo) GetId() string {
 	return ""
 }
 
-func (x *DataNodeInfo) GetVolumeCount() uint64 {
+func (x *DataNodeInfo) GetDiskInfos() map[string]*DiskInfo {
 	if x != nil {
-		return x.VolumeCount
-	}
-	return 0
-}
-
-func (x *DataNodeInfo) GetMaxVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxVolumeCount
-	}
-	return 0
-}
-
-func (x *DataNodeInfo) GetFreeVolumeCount() uint64 {
-	if x != nil {
-		return x.FreeVolumeCount
-	}
-	return 0
-}
-
-func (x *DataNodeInfo) GetActiveVolumeCount() uint64 {
-	if x != nil {
-		return x.ActiveVolumeCount
-	}
-	return 0
-}
-
-func (x *DataNodeInfo) GetVolumeInfos() []*VolumeInformationMessage {
-	if x != nil {
-		return x.VolumeInfos
+		return x.DiskInfos
 	}
 	return nil
 }
 
-func (x *DataNodeInfo) GetEcShardInfos() []*VolumeEcShardInformationMessage {
-	if x != nil {
-		return x.EcShardInfos
-	}
-	return nil
-}
-
-func (x *DataNodeInfo) GetRemoteVolumeCount() uint64 {
-	if x != nil {
-		return x.RemoteVolumeCount
-	}
-	return 0
-}
-
-func (x *DataNodeInfo) GetMaxSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxSsdVolumeCount
-	}
-	return 0
-}
-
-func (x *DataNodeInfo) GetSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.SsdVolumeCount
-	}
-	return 0
-}
-
 type RackInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                string          `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	VolumeCount       uint64          `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
-	MaxVolumeCount    uint64          `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
-	FreeVolumeCount   uint64          `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
-	ActiveVolumeCount uint64          `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
-	DataNodeInfos     []*DataNodeInfo `protobuf:"bytes,6,rep,name=data_node_infos,json=dataNodeInfos,proto3" json:"data_node_infos,omitempty"`
-	RemoteVolumeCount uint64          `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
-	MaxSsdVolumeCount uint64          `protobuf:"varint,8,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
-	SsdVolumeCount    uint64          `protobuf:"varint,9,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
+	Id            string               `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	DataNodeInfos []*DataNodeInfo      `protobuf:"bytes,2,rep,name=data_node_infos,json=dataNodeInfos,proto3" json:"data_node_infos,omitempty"`
+	DiskInfos     map[string]*DiskInfo `protobuf:"bytes,3,rep,name=diskInfos,proto3" json:"diskInfos,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (x *RackInfo) Reset() {
 	*x = RackInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[23]
+		mi := &file_master_proto_msgTypes[24]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1773,7 +1806,7 @@ func (x *RackInfo) String() string {
 func (*RackInfo) ProtoMessage() {}
 
 func (x *RackInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[23]
+	mi := &file_master_proto_msgTypes[24]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1786,7 +1819,7 @@ func (x *RackInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RackInfo.ProtoReflect.Descriptor instead.
 func (*RackInfo) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{23}
+	return file_master_proto_rawDescGZIP(), []int{24}
 }
 
 func (x *RackInfo) GetId() string {
@@ -1796,34 +1829,6 @@ func (x *RackInfo) GetId() string {
 	return ""
 }
 
-func (x *RackInfo) GetVolumeCount() uint64 {
-	if x != nil {
-		return x.VolumeCount
-	}
-	return 0
-}
-
-func (x *RackInfo) GetMaxVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxVolumeCount
-	}
-	return 0
-}
-
-func (x *RackInfo) GetFreeVolumeCount() uint64 {
-	if x != nil {
-		return x.FreeVolumeCount
-	}
-	return 0
-}
-
-func (x *RackInfo) GetActiveVolumeCount() uint64 {
-	if x != nil {
-		return x.ActiveVolumeCount
-	}
-	return 0
-}
-
 func (x *RackInfo) GetDataNodeInfos() []*DataNodeInfo {
 	if x != nil {
 		return x.DataNodeInfos
@@ -1831,25 +1836,11 @@ func (x *RackInfo) GetDataNodeInfos() []*DataNodeInfo {
 	return nil
 }
 
-func (x *RackInfo) GetRemoteVolumeCount() uint64 {
+func (x *RackInfo) GetDiskInfos() map[string]*DiskInfo {
 	if x != nil {
-		return x.RemoteVolumeCount
+		return x.DiskInfos
 	}
-	return 0
-}
-
-func (x *RackInfo) GetMaxSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxSsdVolumeCount
-	}
-	return 0
-}
-
-func (x *RackInfo) GetSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.SsdVolumeCount
-	}
-	return 0
+	return nil
 }
 
 type DataCenterInfo struct {
@@ -1857,21 +1848,15 @@ type DataCenterInfo struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                string      `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	VolumeCount       uint64      `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
-	MaxVolumeCount    uint64      `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
-	FreeVolumeCount   uint64      `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
-	ActiveVolumeCount uint64      `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
-	RackInfos         []*RackInfo `protobuf:"bytes,6,rep,name=rack_infos,json=rackInfos,proto3" json:"rack_infos,omitempty"`
-	RemoteVolumeCount uint64      `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
-	MaxSsdVolumeCount uint64      `protobuf:"varint,8,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
-	SsdVolumeCount    uint64      `protobuf:"varint,9,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
+	Id        string               `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	RackInfos []*RackInfo          `protobuf:"bytes,2,rep,name=rack_infos,json=rackInfos,proto3" json:"rack_infos,omitempty"`
+	DiskInfos map[string]*DiskInfo `protobuf:"bytes,3,rep,name=diskInfos,proto3" json:"diskInfos,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (x *DataCenterInfo) Reset() {
 	*x = DataCenterInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[24]
+		mi := &file_master_proto_msgTypes[25]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1884,7 +1869,7 @@ func (x *DataCenterInfo) String() string {
 func (*DataCenterInfo) ProtoMessage() {}
 
 func (x *DataCenterInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[24]
+	mi := &file_master_proto_msgTypes[25]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1897,7 +1882,7 @@ func (x *DataCenterInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DataCenterInfo.ProtoReflect.Descriptor instead.
 func (*DataCenterInfo) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{24}
+	return file_master_proto_rawDescGZIP(), []int{25}
 }
 
 func (x *DataCenterInfo) GetId() string {
@@ -1907,34 +1892,6 @@ func (x *DataCenterInfo) GetId() string {
 	return ""
 }
 
-func (x *DataCenterInfo) GetVolumeCount() uint64 {
-	if x != nil {
-		return x.VolumeCount
-	}
-	return 0
-}
-
-func (x *DataCenterInfo) GetMaxVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxVolumeCount
-	}
-	return 0
-}
-
-func (x *DataCenterInfo) GetFreeVolumeCount() uint64 {
-	if x != nil {
-		return x.FreeVolumeCount
-	}
-	return 0
-}
-
-func (x *DataCenterInfo) GetActiveVolumeCount() uint64 {
-	if x != nil {
-		return x.ActiveVolumeCount
-	}
-	return 0
-}
-
 func (x *DataCenterInfo) GetRackInfos() []*RackInfo {
 	if x != nil {
 		return x.RackInfos
@@ -1942,25 +1899,11 @@ func (x *DataCenterInfo) GetRackInfos() []*RackInfo {
 	return nil
 }
 
-func (x *DataCenterInfo) GetRemoteVolumeCount() uint64 {
+func (x *DataCenterInfo) GetDiskInfos() map[string]*DiskInfo {
 	if x != nil {
-		return x.RemoteVolumeCount
+		return x.DiskInfos
 	}
-	return 0
-}
-
-func (x *DataCenterInfo) GetMaxSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxSsdVolumeCount
-	}
-	return 0
-}
-
-func (x *DataCenterInfo) GetSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.SsdVolumeCount
-	}
-	return 0
+	return nil
 }
 
 type TopologyInfo struct {
@@ -1968,21 +1911,15 @@ type TopologyInfo struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	VolumeCount       uint64            `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
-	MaxVolumeCount    uint64            `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
-	FreeVolumeCount   uint64            `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
-	ActiveVolumeCount uint64            `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
-	DataCenterInfos   []*DataCenterInfo `protobuf:"bytes,6,rep,name=data_center_infos,json=dataCenterInfos,proto3" json:"data_center_infos,omitempty"`
-	RemoteVolumeCount uint64            `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
-	MaxSsdVolumeCount uint64            `protobuf:"varint,8,opt,name=max_ssd_volume_count,json=maxSsdVolumeCount,proto3" json:"max_ssd_volume_count,omitempty"`
-	SsdVolumeCount    uint64            `protobuf:"varint,9,opt,name=ssd_volume_count,json=ssdVolumeCount,proto3" json:"ssd_volume_count,omitempty"`
+	Id              string               `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	DataCenterInfos []*DataCenterInfo    `protobuf:"bytes,2,rep,name=data_center_infos,json=dataCenterInfos,proto3" json:"data_center_infos,omitempty"`
+	DiskInfos       map[string]*DiskInfo `protobuf:"bytes,3,rep,name=diskInfos,proto3" json:"diskInfos,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (x *TopologyInfo) Reset() {
 	*x = TopologyInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[25]
+		mi := &file_master_proto_msgTypes[26]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1995,7 +1932,7 @@ func (x *TopologyInfo) String() string {
 func (*TopologyInfo) ProtoMessage() {}
 
 func (x *TopologyInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[25]
+	mi := &file_master_proto_msgTypes[26]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2008,7 +1945,7 @@ func (x *TopologyInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TopologyInfo.ProtoReflect.Descriptor instead.
 func (*TopologyInfo) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{25}
+	return file_master_proto_rawDescGZIP(), []int{26}
 }
 
 func (x *TopologyInfo) GetId() string {
@@ -2018,34 +1955,6 @@ func (x *TopologyInfo) GetId() string {
 	return ""
 }
 
-func (x *TopologyInfo) GetVolumeCount() uint64 {
-	if x != nil {
-		return x.VolumeCount
-	}
-	return 0
-}
-
-func (x *TopologyInfo) GetMaxVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxVolumeCount
-	}
-	return 0
-}
-
-func (x *TopologyInfo) GetFreeVolumeCount() uint64 {
-	if x != nil {
-		return x.FreeVolumeCount
-	}
-	return 0
-}
-
-func (x *TopologyInfo) GetActiveVolumeCount() uint64 {
-	if x != nil {
-		return x.ActiveVolumeCount
-	}
-	return 0
-}
-
 func (x *TopologyInfo) GetDataCenterInfos() []*DataCenterInfo {
 	if x != nil {
 		return x.DataCenterInfos
@@ -2053,25 +1962,11 @@ func (x *TopologyInfo) GetDataCenterInfos() []*DataCenterInfo {
 	return nil
 }
 
-func (x *TopologyInfo) GetRemoteVolumeCount() uint64 {
+func (x *TopologyInfo) GetDiskInfos() map[string]*DiskInfo {
 	if x != nil {
-		return x.RemoteVolumeCount
+		return x.DiskInfos
 	}
-	return 0
-}
-
-func (x *TopologyInfo) GetMaxSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.MaxSsdVolumeCount
-	}
-	return 0
-}
-
-func (x *TopologyInfo) GetSsdVolumeCount() uint64 {
-	if x != nil {
-		return x.SsdVolumeCount
-	}
-	return 0
+	return nil
 }
 
 type VolumeListRequest struct {
@@ -2083,7 +1978,7 @@ type VolumeListRequest struct {
 func (x *VolumeListRequest) Reset() {
 	*x = VolumeListRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[26]
+		mi := &file_master_proto_msgTypes[27]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2096,7 +1991,7 @@ func (x *VolumeListRequest) String() string {
 func (*VolumeListRequest) ProtoMessage() {}
 
 func (x *VolumeListRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[26]
+	mi := &file_master_proto_msgTypes[27]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2109,7 +2004,7 @@ func (x *VolumeListRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use VolumeListRequest.ProtoReflect.Descriptor instead.
 func (*VolumeListRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{26}
+	return file_master_proto_rawDescGZIP(), []int{27}
 }
 
 type VolumeListResponse struct {
@@ -2124,7 +2019,7 @@ type VolumeListResponse struct {
 func (x *VolumeListResponse) Reset() {
 	*x = VolumeListResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[27]
+		mi := &file_master_proto_msgTypes[28]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2137,7 +2032,7 @@ func (x *VolumeListResponse) String() string {
 func (*VolumeListResponse) ProtoMessage() {}
 
 func (x *VolumeListResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[27]
+	mi := &file_master_proto_msgTypes[28]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2150,7 +2045,7 @@ func (x *VolumeListResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use VolumeListResponse.ProtoReflect.Descriptor instead.
 func (*VolumeListResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{27}
+	return file_master_proto_rawDescGZIP(), []int{28}
 }
 
 func (x *VolumeListResponse) GetTopologyInfo() *TopologyInfo {
@@ -2178,7 +2073,7 @@ type LookupEcVolumeRequest struct {
 func (x *LookupEcVolumeRequest) Reset() {
 	*x = LookupEcVolumeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[28]
+		mi := &file_master_proto_msgTypes[29]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2191,7 +2086,7 @@ func (x *LookupEcVolumeRequest) String() string {
 func (*LookupEcVolumeRequest) ProtoMessage() {}
 
 func (x *LookupEcVolumeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[28]
+	mi := &file_master_proto_msgTypes[29]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2204,7 +2099,7 @@ func (x *LookupEcVolumeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LookupEcVolumeRequest.ProtoReflect.Descriptor instead.
 func (*LookupEcVolumeRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{28}
+	return file_master_proto_rawDescGZIP(), []int{29}
 }
 
 func (x *LookupEcVolumeRequest) GetVolumeId() uint32 {
@@ -2226,7 +2121,7 @@ type LookupEcVolumeResponse struct {
 func (x *LookupEcVolumeResponse) Reset() {
 	*x = LookupEcVolumeResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[29]
+		mi := &file_master_proto_msgTypes[30]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2239,7 +2134,7 @@ func (x *LookupEcVolumeResponse) String() string {
 func (*LookupEcVolumeResponse) ProtoMessage() {}
 
 func (x *LookupEcVolumeResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[29]
+	mi := &file_master_proto_msgTypes[30]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2252,7 +2147,7 @@ func (x *LookupEcVolumeResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LookupEcVolumeResponse.ProtoReflect.Descriptor instead.
 func (*LookupEcVolumeResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{29}
+	return file_master_proto_rawDescGZIP(), []int{30}
 }
 
 func (x *LookupEcVolumeResponse) GetVolumeId() uint32 {
@@ -2280,7 +2175,7 @@ type VacuumVolumeRequest struct {
 func (x *VacuumVolumeRequest) Reset() {
 	*x = VacuumVolumeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[30]
+		mi := &file_master_proto_msgTypes[31]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2293,7 +2188,7 @@ func (x *VacuumVolumeRequest) String() string {
 func (*VacuumVolumeRequest) ProtoMessage() {}
 
 func (x *VacuumVolumeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[30]
+	mi := &file_master_proto_msgTypes[31]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2306,7 +2201,7 @@ func (x *VacuumVolumeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use VacuumVolumeRequest.ProtoReflect.Descriptor instead.
 func (*VacuumVolumeRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{30}
+	return file_master_proto_rawDescGZIP(), []int{31}
 }
 
 func (x *VacuumVolumeRequest) GetGarbageThreshold() float32 {
@@ -2325,7 +2220,7 @@ type VacuumVolumeResponse struct {
 func (x *VacuumVolumeResponse) Reset() {
 	*x = VacuumVolumeResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[31]
+		mi := &file_master_proto_msgTypes[32]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2338,7 +2233,7 @@ func (x *VacuumVolumeResponse) String() string {
 func (*VacuumVolumeResponse) ProtoMessage() {}
 
 func (x *VacuumVolumeResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[31]
+	mi := &file_master_proto_msgTypes[32]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2351,7 +2246,7 @@ func (x *VacuumVolumeResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use VacuumVolumeResponse.ProtoReflect.Descriptor instead.
 func (*VacuumVolumeResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{31}
+	return file_master_proto_rawDescGZIP(), []int{32}
 }
 
 type GetMasterConfigurationRequest struct {
@@ -2363,7 +2258,7 @@ type GetMasterConfigurationRequest struct {
 func (x *GetMasterConfigurationRequest) Reset() {
 	*x = GetMasterConfigurationRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[32]
+		mi := &file_master_proto_msgTypes[33]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2376,7 +2271,7 @@ func (x *GetMasterConfigurationRequest) String() string {
 func (*GetMasterConfigurationRequest) ProtoMessage() {}
 
 func (x *GetMasterConfigurationRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[32]
+	mi := &file_master_proto_msgTypes[33]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2389,7 +2284,7 @@ func (x *GetMasterConfigurationRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetMasterConfigurationRequest.ProtoReflect.Descriptor instead.
 func (*GetMasterConfigurationRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{32}
+	return file_master_proto_rawDescGZIP(), []int{33}
 }
 
 type GetMasterConfigurationResponse struct {
@@ -2407,7 +2302,7 @@ type GetMasterConfigurationResponse struct {
 func (x *GetMasterConfigurationResponse) Reset() {
 	*x = GetMasterConfigurationResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[33]
+		mi := &file_master_proto_msgTypes[34]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2420,7 +2315,7 @@ func (x *GetMasterConfigurationResponse) String() string {
 func (*GetMasterConfigurationResponse) ProtoMessage() {}
 
 func (x *GetMasterConfigurationResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[33]
+	mi := &file_master_proto_msgTypes[34]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2433,7 +2328,7 @@ func (x *GetMasterConfigurationResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetMasterConfigurationResponse.ProtoReflect.Descriptor instead.
 func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{33}
+	return file_master_proto_rawDescGZIP(), []int{34}
 }
 
 func (x *GetMasterConfigurationResponse) GetMetricsAddress() string {
@@ -2482,7 +2377,7 @@ type ListMasterClientsRequest struct {
 func (x *ListMasterClientsRequest) Reset() {
 	*x = ListMasterClientsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[34]
+		mi := &file_master_proto_msgTypes[35]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2495,7 +2390,7 @@ func (x *ListMasterClientsRequest) String() string {
 func (*ListMasterClientsRequest) ProtoMessage() {}
 
 func (x *ListMasterClientsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[34]
+	mi := &file_master_proto_msgTypes[35]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2508,7 +2403,7 @@ func (x *ListMasterClientsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMasterClientsRequest.ProtoReflect.Descriptor instead.
 func (*ListMasterClientsRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{34}
+	return file_master_proto_rawDescGZIP(), []int{35}
 }
 
 func (x *ListMasterClientsRequest) GetClientType() string {
@@ -2529,7 +2424,7 @@ type ListMasterClientsResponse struct {
 func (x *ListMasterClientsResponse) Reset() {
 	*x = ListMasterClientsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[35]
+		mi := &file_master_proto_msgTypes[36]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2542,7 +2437,7 @@ func (x *ListMasterClientsResponse) String() string {
 func (*ListMasterClientsResponse) ProtoMessage() {}
 
 func (x *ListMasterClientsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[35]
+	mi := &file_master_proto_msgTypes[36]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2555,7 +2450,7 @@ func (x *ListMasterClientsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMasterClientsResponse.ProtoReflect.Descriptor instead.
 func (*ListMasterClientsResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{35}
+	return file_master_proto_rawDescGZIP(), []int{36}
 }
 
 func (x *ListMasterClientsResponse) GetGrpcAddresses() []string {
@@ -2578,7 +2473,7 @@ type LeaseAdminTokenRequest struct {
 func (x *LeaseAdminTokenRequest) Reset() {
 	*x = LeaseAdminTokenRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[36]
+		mi := &file_master_proto_msgTypes[37]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2591,7 +2486,7 @@ func (x *LeaseAdminTokenRequest) String() string {
 func (*LeaseAdminTokenRequest) ProtoMessage() {}
 
 func (x *LeaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[36]
+	mi := &file_master_proto_msgTypes[37]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2604,7 +2499,7 @@ func (x *LeaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LeaseAdminTokenRequest.ProtoReflect.Descriptor instead.
 func (*LeaseAdminTokenRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{36}
+	return file_master_proto_rawDescGZIP(), []int{37}
 }
 
 func (x *LeaseAdminTokenRequest) GetPreviousToken() int64 {
@@ -2640,7 +2535,7 @@ type LeaseAdminTokenResponse struct {
 func (x *LeaseAdminTokenResponse) Reset() {
 	*x = LeaseAdminTokenResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[37]
+		mi := &file_master_proto_msgTypes[38]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2653,7 +2548,7 @@ func (x *LeaseAdminTokenResponse) String() string {
 func (*LeaseAdminTokenResponse) ProtoMessage() {}
 
 func (x *LeaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[37]
+	mi := &file_master_proto_msgTypes[38]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2666,7 +2561,7 @@ func (x *LeaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LeaseAdminTokenResponse.ProtoReflect.Descriptor instead.
 func (*LeaseAdminTokenResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{37}
+	return file_master_proto_rawDescGZIP(), []int{38}
 }
 
 func (x *LeaseAdminTokenResponse) GetToken() int64 {
@@ -2696,7 +2591,7 @@ type ReleaseAdminTokenRequest struct {
 func (x *ReleaseAdminTokenRequest) Reset() {
 	*x = ReleaseAdminTokenRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[38]
+		mi := &file_master_proto_msgTypes[39]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2709,7 +2604,7 @@ func (x *ReleaseAdminTokenRequest) String() string {
 func (*ReleaseAdminTokenRequest) ProtoMessage() {}
 
 func (x *ReleaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[38]
+	mi := &file_master_proto_msgTypes[39]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2722,7 +2617,7 @@ func (x *ReleaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReleaseAdminTokenRequest.ProtoReflect.Descriptor instead.
 func (*ReleaseAdminTokenRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{38}
+	return file_master_proto_rawDescGZIP(), []int{39}
 }
 
 func (x *ReleaseAdminTokenRequest) GetPreviousToken() int64 {
@@ -2755,7 +2650,7 @@ type ReleaseAdminTokenResponse struct {
 func (x *ReleaseAdminTokenResponse) Reset() {
 	*x = ReleaseAdminTokenResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[39]
+		mi := &file_master_proto_msgTypes[40]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2768,7 +2663,7 @@ func (x *ReleaseAdminTokenResponse) String() string {
 func (*ReleaseAdminTokenResponse) ProtoMessage() {}
 
 func (x *ReleaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[39]
+	mi := &file_master_proto_msgTypes[40]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2781,7 +2676,7 @@ func (x *ReleaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReleaseAdminTokenResponse.ProtoReflect.Descriptor instead.
 func (*ReleaseAdminTokenResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{39}
+	return file_master_proto_rawDescGZIP(), []int{40}
 }
 
 type SuperBlockExtra_ErasureCoding struct {
@@ -2797,7 +2692,7 @@ type SuperBlockExtra_ErasureCoding struct {
 func (x *SuperBlockExtra_ErasureCoding) Reset() {
 	*x = SuperBlockExtra_ErasureCoding{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[41]
+		mi := &file_master_proto_msgTypes[43]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2810,7 +2705,7 @@ func (x *SuperBlockExtra_ErasureCoding) String() string {
 func (*SuperBlockExtra_ErasureCoding) ProtoMessage() {}
 
 func (x *SuperBlockExtra_ErasureCoding) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[41]
+	mi := &file_master_proto_msgTypes[43]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2860,7 +2755,7 @@ type LookupVolumeResponse_VolumeIdLocation struct {
 func (x *LookupVolumeResponse_VolumeIdLocation) Reset() {
 	*x = LookupVolumeResponse_VolumeIdLocation{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[42]
+		mi := &file_master_proto_msgTypes[44]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2873,7 +2768,7 @@ func (x *LookupVolumeResponse_VolumeIdLocation) String() string {
 func (*LookupVolumeResponse_VolumeIdLocation) ProtoMessage() {}
 
 func (x *LookupVolumeResponse_VolumeIdLocation) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[42]
+	mi := &file_master_proto_msgTypes[44]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2922,7 +2817,7 @@ type LookupEcVolumeResponse_EcShardIdLocation struct {
 func (x *LookupEcVolumeResponse_EcShardIdLocation) Reset() {
 	*x = LookupEcVolumeResponse_EcShardIdLocation{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[43]
+		mi := &file_master_proto_msgTypes[49]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2935,7 +2830,7 @@ func (x *LookupEcVolumeResponse_EcShardIdLocation) String() string {
 func (*LookupEcVolumeResponse_EcShardIdLocation) ProtoMessage() {}
 
 func (x *LookupEcVolumeResponse_EcShardIdLocation) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[43]
+	mi := &file_master_proto_msgTypes[49]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2948,7 +2843,7 @@ func (x *LookupEcVolumeResponse_EcShardIdLocation) ProtoReflect() protoreflect.M
 
 // Deprecated: Use LookupEcVolumeResponse_EcShardIdLocation.ProtoReflect.Descriptor instead.
 func (*LookupEcVolumeResponse_EcShardIdLocation) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{29, 0}
+	return file_master_proto_rawDescGZIP(), []int{30, 0}
 }
 
 func (x *LookupEcVolumeResponse_EcShardIdLocation) GetShardId() uint32 {
@@ -2969,7 +2864,7 @@ var File_master_proto protoreflect.FileDescriptor
 
 var file_master_proto_rawDesc = []byte{
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 }
 
 var (
@@ -3511,52 +3388,58 @@ func file_master_proto_rawDescGZIP() []byte {
 	return file_master_proto_rawDescData
 }
 
-var file_master_proto_msgTypes = make([]protoimpl.MessageInfo, 44)
+var file_master_proto_msgTypes = make([]protoimpl.MessageInfo, 50)
 var file_master_proto_goTypes = []interface{}{
-	(*Heartbeat)(nil),                                // 0: master_pb.Heartbeat
-	(*HeartbeatResponse)(nil),                        // 1: master_pb.HeartbeatResponse
-	(*VolumeInformationMessage)(nil),                 // 2: master_pb.VolumeInformationMessage
-	(*VolumeShortInformationMessage)(nil),            // 3: master_pb.VolumeShortInformationMessage
-	(*VolumeEcShardInformationMessage)(nil),          // 4: master_pb.VolumeEcShardInformationMessage
-	(*StorageBackend)(nil),                           // 5: master_pb.StorageBackend
-	(*Empty)(nil),                                    // 6: master_pb.Empty
-	(*SuperBlockExtra)(nil),                          // 7: master_pb.SuperBlockExtra
-	(*KeepConnectedRequest)(nil),                     // 8: master_pb.KeepConnectedRequest
-	(*VolumeLocation)(nil),                           // 9: master_pb.VolumeLocation
-	(*LookupVolumeRequest)(nil),                      // 10: master_pb.LookupVolumeRequest
-	(*LookupVolumeResponse)(nil),                     // 11: master_pb.LookupVolumeResponse
-	(*Location)(nil),                                 // 12: master_pb.Location
-	(*AssignRequest)(nil),                            // 13: master_pb.AssignRequest
-	(*AssignResponse)(nil),                           // 14: master_pb.AssignResponse
-	(*StatisticsRequest)(nil),                        // 15: master_pb.StatisticsRequest
-	(*StatisticsResponse)(nil),                       // 16: master_pb.StatisticsResponse
-	(*Collection)(nil),                               // 17: master_pb.Collection
-	(*CollectionListRequest)(nil),                    // 18: master_pb.CollectionListRequest
-	(*CollectionListResponse)(nil),                   // 19: master_pb.CollectionListResponse
-	(*CollectionDeleteRequest)(nil),                  // 20: master_pb.CollectionDeleteRequest
-	(*CollectionDeleteResponse)(nil),                 // 21: master_pb.CollectionDeleteResponse
-	(*DataNodeInfo)(nil),                             // 22: master_pb.DataNodeInfo
-	(*RackInfo)(nil),                                 // 23: master_pb.RackInfo
-	(*DataCenterInfo)(nil),                           // 24: master_pb.DataCenterInfo
-	(*TopologyInfo)(nil),                             // 25: master_pb.TopologyInfo
-	(*VolumeListRequest)(nil),                        // 26: master_pb.VolumeListRequest
-	(*VolumeListResponse)(nil),                       // 27: master_pb.VolumeListResponse
-	(*LookupEcVolumeRequest)(nil),                    // 28: master_pb.LookupEcVolumeRequest
-	(*LookupEcVolumeResponse)(nil),                   // 29: master_pb.LookupEcVolumeResponse
-	(*VacuumVolumeRequest)(nil),                      // 30: master_pb.VacuumVolumeRequest
-	(*VacuumVolumeResponse)(nil),                     // 31: master_pb.VacuumVolumeResponse
-	(*GetMasterConfigurationRequest)(nil),            // 32: master_pb.GetMasterConfigurationRequest
-	(*GetMasterConfigurationResponse)(nil),           // 33: master_pb.GetMasterConfigurationResponse
-	(*ListMasterClientsRequest)(nil),                 // 34: master_pb.ListMasterClientsRequest
-	(*ListMasterClientsResponse)(nil),                // 35: master_pb.ListMasterClientsResponse
-	(*LeaseAdminTokenRequest)(nil),                   // 36: master_pb.LeaseAdminTokenRequest
-	(*LeaseAdminTokenResponse)(nil),                  // 37: master_pb.LeaseAdminTokenResponse
-	(*ReleaseAdminTokenRequest)(nil),                 // 38: master_pb.ReleaseAdminTokenRequest
-	(*ReleaseAdminTokenResponse)(nil),                // 39: master_pb.ReleaseAdminTokenResponse
-	nil,                                              // 40: master_pb.StorageBackend.PropertiesEntry
-	(*SuperBlockExtra_ErasureCoding)(nil),            // 41: master_pb.SuperBlockExtra.ErasureCoding
-	(*LookupVolumeResponse_VolumeIdLocation)(nil),    // 42: master_pb.LookupVolumeResponse.VolumeIdLocation
-	(*LookupEcVolumeResponse_EcShardIdLocation)(nil), // 43: master_pb.LookupEcVolumeResponse.EcShardIdLocation
+	(*Heartbeat)(nil),                             // 0: master_pb.Heartbeat
+	(*HeartbeatResponse)(nil),                     // 1: master_pb.HeartbeatResponse
+	(*VolumeInformationMessage)(nil),              // 2: master_pb.VolumeInformationMessage
+	(*VolumeShortInformationMessage)(nil),         // 3: master_pb.VolumeShortInformationMessage
+	(*VolumeEcShardInformationMessage)(nil),       // 4: master_pb.VolumeEcShardInformationMessage
+	(*StorageBackend)(nil),                        // 5: master_pb.StorageBackend
+	(*Empty)(nil),                                 // 6: master_pb.Empty
+	(*SuperBlockExtra)(nil),                       // 7: master_pb.SuperBlockExtra
+	(*KeepConnectedRequest)(nil),                  // 8: master_pb.KeepConnectedRequest
+	(*VolumeLocation)(nil),                        // 9: master_pb.VolumeLocation
+	(*LookupVolumeRequest)(nil),                   // 10: master_pb.LookupVolumeRequest
+	(*LookupVolumeResponse)(nil),                  // 11: master_pb.LookupVolumeResponse
+	(*Location)(nil),                              // 12: master_pb.Location
+	(*AssignRequest)(nil),                         // 13: master_pb.AssignRequest
+	(*AssignResponse)(nil),                        // 14: master_pb.AssignResponse
+	(*StatisticsRequest)(nil),                     // 15: master_pb.StatisticsRequest
+	(*StatisticsResponse)(nil),                    // 16: master_pb.StatisticsResponse
+	(*Collection)(nil),                            // 17: master_pb.Collection
+	(*CollectionListRequest)(nil),                 // 18: master_pb.CollectionListRequest
+	(*CollectionListResponse)(nil),                // 19: master_pb.CollectionListResponse
+	(*CollectionDeleteRequest)(nil),               // 20: master_pb.CollectionDeleteRequest
+	(*CollectionDeleteResponse)(nil),              // 21: master_pb.CollectionDeleteResponse
+	(*DiskInfo)(nil),                              // 22: master_pb.DiskInfo
+	(*DataNodeInfo)(nil),                          // 23: master_pb.DataNodeInfo
+	(*RackInfo)(nil),                              // 24: master_pb.RackInfo
+	(*DataCenterInfo)(nil),                        // 25: master_pb.DataCenterInfo
+	(*TopologyInfo)(nil),                          // 26: master_pb.TopologyInfo
+	(*VolumeListRequest)(nil),                     // 27: master_pb.VolumeListRequest
+	(*VolumeListResponse)(nil),                    // 28: master_pb.VolumeListResponse
+	(*LookupEcVolumeRequest)(nil),                 // 29: master_pb.LookupEcVolumeRequest
+	(*LookupEcVolumeResponse)(nil),                // 30: master_pb.LookupEcVolumeResponse
+	(*VacuumVolumeRequest)(nil),                   // 31: master_pb.VacuumVolumeRequest
+	(*VacuumVolumeResponse)(nil),                  // 32: master_pb.VacuumVolumeResponse
+	(*GetMasterConfigurationRequest)(nil),         // 33: master_pb.GetMasterConfigurationRequest
+	(*GetMasterConfigurationResponse)(nil),        // 34: master_pb.GetMasterConfigurationResponse
+	(*ListMasterClientsRequest)(nil),              // 35: master_pb.ListMasterClientsRequest
+	(*ListMasterClientsResponse)(nil),             // 36: master_pb.ListMasterClientsResponse
+	(*LeaseAdminTokenRequest)(nil),                // 37: master_pb.LeaseAdminTokenRequest
+	(*LeaseAdminTokenResponse)(nil),               // 38: master_pb.LeaseAdminTokenResponse
+	(*ReleaseAdminTokenRequest)(nil),              // 39: master_pb.ReleaseAdminTokenRequest
+	(*ReleaseAdminTokenResponse)(nil),             // 40: master_pb.ReleaseAdminTokenResponse
+	nil,                                           // 41: master_pb.Heartbeat.MaxVolumeCountsEntry
+	nil,                                           // 42: master_pb.StorageBackend.PropertiesEntry
+	(*SuperBlockExtra_ErasureCoding)(nil),         // 43: master_pb.SuperBlockExtra.ErasureCoding
+	(*LookupVolumeResponse_VolumeIdLocation)(nil), // 44: master_pb.LookupVolumeResponse.VolumeIdLocation
+	nil, // 45: master_pb.DataNodeInfo.DiskInfosEntry
+	nil, // 46: master_pb.RackInfo.DiskInfosEntry
+	nil, // 47: master_pb.DataCenterInfo.DiskInfosEntry
+	nil, // 48: master_pb.TopologyInfo.DiskInfosEntry
+	(*LookupEcVolumeResponse_EcShardIdLocation)(nil), // 49: master_pb.LookupEcVolumeResponse.EcShardIdLocation
 }
 var file_master_proto_depIdxs = []int32{
 	2,  // 0: master_pb.Heartbeat.volumes:type_name -> master_pb.VolumeInformationMessage
@@ -3565,54 +3448,63 @@ var file_master_proto_depIdxs = []int32{
 	4,  // 3: master_pb.Heartbeat.ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
 	4,  // 4: master_pb.Heartbeat.new_ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
 	4,  // 5: master_pb.Heartbeat.deleted_ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
-	5,  // 6: master_pb.HeartbeatResponse.storage_backends:type_name -> master_pb.StorageBackend
-	40, // 7: master_pb.StorageBackend.properties:type_name -> master_pb.StorageBackend.PropertiesEntry
-	41, // 8: master_pb.SuperBlockExtra.erasure_coding:type_name -> master_pb.SuperBlockExtra.ErasureCoding
-	42, // 9: master_pb.LookupVolumeResponse.volume_id_locations:type_name -> master_pb.LookupVolumeResponse.VolumeIdLocation
-	17, // 10: master_pb.CollectionListResponse.collections:type_name -> master_pb.Collection
-	2,  // 11: master_pb.DataNodeInfo.volume_infos:type_name -> master_pb.VolumeInformationMessage
-	4,  // 12: master_pb.DataNodeInfo.ec_shard_infos:type_name -> master_pb.VolumeEcShardInformationMessage
-	22, // 13: master_pb.RackInfo.data_node_infos:type_name -> master_pb.DataNodeInfo
-	23, // 14: master_pb.DataCenterInfo.rack_infos:type_name -> master_pb.RackInfo
-	24, // 15: master_pb.TopologyInfo.data_center_infos:type_name -> master_pb.DataCenterInfo
-	25, // 16: master_pb.VolumeListResponse.topology_info:type_name -> master_pb.TopologyInfo
-	43, // 17: master_pb.LookupEcVolumeResponse.shard_id_locations:type_name -> master_pb.LookupEcVolumeResponse.EcShardIdLocation
-	5,  // 18: master_pb.GetMasterConfigurationResponse.storage_backends:type_name -> master_pb.StorageBackend
-	12, // 19: master_pb.LookupVolumeResponse.VolumeIdLocation.locations:type_name -> master_pb.Location
-	12, // 20: master_pb.LookupEcVolumeResponse.EcShardIdLocation.locations:type_name -> master_pb.Location
-	0,  // 21: master_pb.Seaweed.SendHeartbeat:input_type -> master_pb.Heartbeat
-	8,  // 22: master_pb.Seaweed.KeepConnected:input_type -> master_pb.KeepConnectedRequest
-	10, // 23: master_pb.Seaweed.LookupVolume:input_type -> master_pb.LookupVolumeRequest
-	13, // 24: master_pb.Seaweed.Assign:input_type -> master_pb.AssignRequest
-	15, // 25: master_pb.Seaweed.Statistics:input_type -> master_pb.StatisticsRequest
-	18, // 26: master_pb.Seaweed.CollectionList:input_type -> master_pb.CollectionListRequest
-	20, // 27: master_pb.Seaweed.CollectionDelete:input_type -> master_pb.CollectionDeleteRequest
-	26, // 28: master_pb.Seaweed.VolumeList:input_type -> master_pb.VolumeListRequest
-	28, // 29: master_pb.Seaweed.LookupEcVolume:input_type -> master_pb.LookupEcVolumeRequest
-	30, // 30: master_pb.Seaweed.VacuumVolume:input_type -> master_pb.VacuumVolumeRequest
-	32, // 31: master_pb.Seaweed.GetMasterConfiguration:input_type -> master_pb.GetMasterConfigurationRequest
-	34, // 32: master_pb.Seaweed.ListMasterClients:input_type -> master_pb.ListMasterClientsRequest
-	36, // 33: master_pb.Seaweed.LeaseAdminToken:input_type -> master_pb.LeaseAdminTokenRequest
-	38, // 34: master_pb.Seaweed.ReleaseAdminToken:input_type -> master_pb.ReleaseAdminTokenRequest
-	1,  // 35: master_pb.Seaweed.SendHeartbeat:output_type -> master_pb.HeartbeatResponse
-	9,  // 36: master_pb.Seaweed.KeepConnected:output_type -> master_pb.VolumeLocation
-	11, // 37: master_pb.Seaweed.LookupVolume:output_type -> master_pb.LookupVolumeResponse
-	14, // 38: master_pb.Seaweed.Assign:output_type -> master_pb.AssignResponse
-	16, // 39: master_pb.Seaweed.Statistics:output_type -> master_pb.StatisticsResponse
-	19, // 40: master_pb.Seaweed.CollectionList:output_type -> master_pb.CollectionListResponse
-	21, // 41: master_pb.Seaweed.CollectionDelete:output_type -> master_pb.CollectionDeleteResponse
-	27, // 42: master_pb.Seaweed.VolumeList:output_type -> master_pb.VolumeListResponse
-	29, // 43: master_pb.Seaweed.LookupEcVolume:output_type -> master_pb.LookupEcVolumeResponse
-	31, // 44: master_pb.Seaweed.VacuumVolume:output_type -> master_pb.VacuumVolumeResponse
-	33, // 45: master_pb.Seaweed.GetMasterConfiguration:output_type -> master_pb.GetMasterConfigurationResponse
-	35, // 46: master_pb.Seaweed.ListMasterClients:output_type -> master_pb.ListMasterClientsResponse
-	37, // 47: master_pb.Seaweed.LeaseAdminToken:output_type -> master_pb.LeaseAdminTokenResponse
-	39, // 48: master_pb.Seaweed.ReleaseAdminToken:output_type -> master_pb.ReleaseAdminTokenResponse
-	35, // [35:49] is the sub-list for method output_type
-	21, // [21:35] is the sub-list for method input_type
-	21, // [21:21] is the sub-list for extension type_name
-	21, // [21:21] is the sub-list for extension extendee
-	0,  // [0:21] is the sub-list for field type_name
+	41, // 6: master_pb.Heartbeat.max_volume_counts:type_name -> master_pb.Heartbeat.MaxVolumeCountsEntry
+	5,  // 7: master_pb.HeartbeatResponse.storage_backends:type_name -> master_pb.StorageBackend
+	42, // 8: master_pb.StorageBackend.properties:type_name -> master_pb.StorageBackend.PropertiesEntry
+	43, // 9: master_pb.SuperBlockExtra.erasure_coding:type_name -> master_pb.SuperBlockExtra.ErasureCoding
+	44, // 10: master_pb.LookupVolumeResponse.volume_id_locations:type_name -> master_pb.LookupVolumeResponse.VolumeIdLocation
+	17, // 11: master_pb.CollectionListResponse.collections:type_name -> master_pb.Collection
+	2,  // 12: master_pb.DiskInfo.volume_infos:type_name -> master_pb.VolumeInformationMessage
+	4,  // 13: master_pb.DiskInfo.ec_shard_infos:type_name -> master_pb.VolumeEcShardInformationMessage
+	45, // 14: master_pb.DataNodeInfo.diskInfos:type_name -> master_pb.DataNodeInfo.DiskInfosEntry
+	23, // 15: master_pb.RackInfo.data_node_infos:type_name -> master_pb.DataNodeInfo
+	46, // 16: master_pb.RackInfo.diskInfos:type_name -> master_pb.RackInfo.DiskInfosEntry
+	24, // 17: master_pb.DataCenterInfo.rack_infos:type_name -> master_pb.RackInfo
+	47, // 18: master_pb.DataCenterInfo.diskInfos:type_name -> master_pb.DataCenterInfo.DiskInfosEntry
+	25, // 19: master_pb.TopologyInfo.data_center_infos:type_name -> master_pb.DataCenterInfo
+	48, // 20: master_pb.TopologyInfo.diskInfos:type_name -> master_pb.TopologyInfo.DiskInfosEntry
+	26, // 21: master_pb.VolumeListResponse.topology_info:type_name -> master_pb.TopologyInfo
+	49, // 22: master_pb.LookupEcVolumeResponse.shard_id_locations:type_name -> master_pb.LookupEcVolumeResponse.EcShardIdLocation
+	5,  // 23: master_pb.GetMasterConfigurationResponse.storage_backends:type_name -> master_pb.StorageBackend
+	12, // 24: master_pb.LookupVolumeResponse.VolumeIdLocation.locations:type_name -> master_pb.Location
+	22, // 25: master_pb.DataNodeInfo.DiskInfosEntry.value:type_name -> master_pb.DiskInfo
+	22, // 26: master_pb.RackInfo.DiskInfosEntry.value:type_name -> master_pb.DiskInfo
+	22, // 27: master_pb.DataCenterInfo.DiskInfosEntry.value:type_name -> master_pb.DiskInfo
+	22, // 28: master_pb.TopologyInfo.DiskInfosEntry.value:type_name -> master_pb.DiskInfo
+	12, // 29: master_pb.LookupEcVolumeResponse.EcShardIdLocation.locations:type_name -> master_pb.Location
+	0,  // 30: master_pb.Seaweed.SendHeartbeat:input_type -> master_pb.Heartbeat
+	8,  // 31: master_pb.Seaweed.KeepConnected:input_type -> master_pb.KeepConnectedRequest
+	10, // 32: master_pb.Seaweed.LookupVolume:input_type -> master_pb.LookupVolumeRequest
+	13, // 33: master_pb.Seaweed.Assign:input_type -> master_pb.AssignRequest
+	15, // 34: master_pb.Seaweed.Statistics:input_type -> master_pb.StatisticsRequest
+	18, // 35: master_pb.Seaweed.CollectionList:input_type -> master_pb.CollectionListRequest
+	20, // 36: master_pb.Seaweed.CollectionDelete:input_type -> master_pb.CollectionDeleteRequest
+	27, // 37: master_pb.Seaweed.VolumeList:input_type -> master_pb.VolumeListRequest
+	29, // 38: master_pb.Seaweed.LookupEcVolume:input_type -> master_pb.LookupEcVolumeRequest
+	31, // 39: master_pb.Seaweed.VacuumVolume:input_type -> master_pb.VacuumVolumeRequest
+	33, // 40: master_pb.Seaweed.GetMasterConfiguration:input_type -> master_pb.GetMasterConfigurationRequest
+	35, // 41: master_pb.Seaweed.ListMasterClients:input_type -> master_pb.ListMasterClientsRequest
+	37, // 42: master_pb.Seaweed.LeaseAdminToken:input_type -> master_pb.LeaseAdminTokenRequest
+	39, // 43: master_pb.Seaweed.ReleaseAdminToken:input_type -> master_pb.ReleaseAdminTokenRequest
+	1,  // 44: master_pb.Seaweed.SendHeartbeat:output_type -> master_pb.HeartbeatResponse
+	9,  // 45: master_pb.Seaweed.KeepConnected:output_type -> master_pb.VolumeLocation
+	11, // 46: master_pb.Seaweed.LookupVolume:output_type -> master_pb.LookupVolumeResponse
+	14, // 47: master_pb.Seaweed.Assign:output_type -> master_pb.AssignResponse
+	16, // 48: master_pb.Seaweed.Statistics:output_type -> master_pb.StatisticsResponse
+	19, // 49: master_pb.Seaweed.CollectionList:output_type -> master_pb.CollectionListResponse
+	21, // 50: master_pb.Seaweed.CollectionDelete:output_type -> master_pb.CollectionDeleteResponse
+	28, // 51: master_pb.Seaweed.VolumeList:output_type -> master_pb.VolumeListResponse
+	30, // 52: master_pb.Seaweed.LookupEcVolume:output_type -> master_pb.LookupEcVolumeResponse
+	32, // 53: master_pb.Seaweed.VacuumVolume:output_type -> master_pb.VacuumVolumeResponse
+	34, // 54: master_pb.Seaweed.GetMasterConfiguration:output_type -> master_pb.GetMasterConfigurationResponse
+	36, // 55: master_pb.Seaweed.ListMasterClients:output_type -> master_pb.ListMasterClientsResponse
+	38, // 56: master_pb.Seaweed.LeaseAdminToken:output_type -> master_pb.LeaseAdminTokenResponse
+	40, // 57: master_pb.Seaweed.ReleaseAdminToken:output_type -> master_pb.ReleaseAdminTokenResponse
+	44, // [44:58] is the sub-list for method output_type
+	30, // [30:44] is the sub-list for method input_type
+	30, // [30:30] is the sub-list for extension type_name
+	30, // [30:30] is the sub-list for extension extendee
+	0,  // [0:30] is the sub-list for field type_name
 }
 
 func init() { file_master_proto_init() }
@@ -3886,7 +3778,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DataNodeInfo); i {
+			switch v := v.(*DiskInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3898,7 +3790,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RackInfo); i {
+			switch v := v.(*DataNodeInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3910,7 +3802,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DataCenterInfo); i {
+			switch v := v.(*RackInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3922,7 +3814,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*TopologyInfo); i {
+			switch v := v.(*DataCenterInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3934,7 +3826,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*VolumeListRequest); i {
+			switch v := v.(*TopologyInfo); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3946,7 +3838,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*VolumeListResponse); i {
+			switch v := v.(*VolumeListRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3958,7 +3850,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LookupEcVolumeRequest); i {
+			switch v := v.(*VolumeListResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3970,7 +3862,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LookupEcVolumeResponse); i {
+			switch v := v.(*LookupEcVolumeRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3982,7 +3874,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[30].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*VacuumVolumeRequest); i {
+			switch v := v.(*LookupEcVolumeResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3994,7 +3886,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[31].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*VacuumVolumeResponse); i {
+			switch v := v.(*VacuumVolumeRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4006,7 +3898,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[32].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetMasterConfigurationRequest); i {
+			switch v := v.(*VacuumVolumeResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4018,7 +3910,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[33].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetMasterConfigurationResponse); i {
+			switch v := v.(*GetMasterConfigurationRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4030,7 +3922,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[34].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMasterClientsRequest); i {
+			switch v := v.(*GetMasterConfigurationResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4042,7 +3934,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMasterClientsResponse); i {
+			switch v := v.(*ListMasterClientsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4054,7 +3946,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LeaseAdminTokenRequest); i {
+			switch v := v.(*ListMasterClientsResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4066,7 +3958,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LeaseAdminTokenResponse); i {
+			switch v := v.(*LeaseAdminTokenRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4078,7 +3970,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReleaseAdminTokenRequest); i {
+			switch v := v.(*LeaseAdminTokenResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4090,6 +3982,18 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReleaseAdminTokenRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ReleaseAdminTokenResponse); i {
 			case 0:
 				return &v.state
@@ -4101,7 +4005,7 @@ func file_master_proto_init() {
 				return nil
 			}
 		}
-		file_master_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+		file_master_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SuperBlockExtra_ErasureCoding); i {
 			case 0:
 				return &v.state
@@ -4113,7 +4017,7 @@ func file_master_proto_init() {
 				return nil
 			}
 		}
-		file_master_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
+		file_master_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LookupVolumeResponse_VolumeIdLocation); i {
 			case 0:
 				return &v.state
@@ -4125,7 +4029,7 @@ func file_master_proto_init() {
 				return nil
 			}
 		}
-		file_master_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
+		file_master_proto_msgTypes[49].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LookupEcVolumeResponse_EcShardIdLocation); i {
 			case 0:
 				return &v.state
@@ -4144,7 +4048,7 @@ func file_master_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_master_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   44,
+			NumMessages:   50,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/weed/server/master_grpc_server.go b/weed/server/master_grpc_server.go
index 62b8cdf07..0f0b7f101 100644
--- a/weed/server/master_grpc_server.go
+++ b/weed/server/master_grpc_server.go
@@ -67,7 +67,7 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			dcName, rackName := ms.Topo.Configuration.Locate(heartbeat.Ip, heartbeat.DataCenter, heartbeat.Rack)
 			dc := ms.Topo.GetOrCreateDataCenter(dcName)
 			rack := dc.GetOrCreateRack(rackName)
-			dn = rack.GetOrCreateDataNode(heartbeat.Ip, int(heartbeat.Port), heartbeat.PublicUrl, int64(heartbeat.MaxVolumeCount), int64(heartbeat.MaxSsdVolumeCount))
+			dn = rack.GetOrCreateDataNode(heartbeat.Ip, int(heartbeat.Port), heartbeat.PublicUrl, heartbeat.MaxVolumeCounts)
 			glog.V(0).Infof("added volume server %v:%d", heartbeat.GetIp(), heartbeat.GetPort())
 			if err := stream.Send(&master_pb.HeartbeatResponse{
 				VolumeSizeLimit: uint64(ms.option.VolumeSizeLimitMB) * 1024 * 1024,
@@ -77,14 +77,7 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			}
 		}
 
-		if heartbeat.MaxVolumeCount != 0 && dn.GetMaxVolumeCount() != int64(heartbeat.MaxVolumeCount) {
-			delta := int64(heartbeat.MaxVolumeCount) - dn.GetMaxVolumeCount()
-			dn.UpAdjustMaxVolumeCountDelta(delta)
-		}
-		if heartbeat.MaxSsdVolumeCount != 0 && dn.GetMaxSsdVolumeCount() != int64(heartbeat.MaxSsdVolumeCount) {
-			delta := int64(heartbeat.MaxSsdVolumeCount) - dn.GetMaxSsdVolumeCount()
-			dn.UpAdjustMaxSsdVolumeCountDelta(delta)
-		}
+		dn.AdjustMaxVolumeCounts(heartbeat.MaxVolumeCounts)
 
 		glog.V(4).Infof("master received heartbeat %s", heartbeat.String())
 		message := &master_pb.VolumeLocation{
diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index deac3027c..d71e04c70 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"fmt"
 	"github.com/chrislusf/raft"
-	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 	"github.com/chrislusf/seaweedfs/weed/security"
@@ -61,7 +61,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 	if err != nil {
 		return nil, err
 	}
-	diskType := storage.ToDiskType(req.DiskType)
+	diskType := types.ToDiskType(req.DiskType)
 
 	option := &topology.VolumeGrowOption{
 		Collection:         req.Collection,
@@ -120,10 +120,10 @@ func (ms *MasterServer) Statistics(ctx context.Context, req *master_pb.Statistic
 		return nil, err
 	}
 
-	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, storage.DiskType(req.DiskType))
+	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, types.DiskType(req.DiskType))
 	stats := volumeLayout.Stats()
 
-	totalSize := (ms.Topo.GetMaxVolumeCount() + ms.Topo.GetMaxSsdVolumeCount()) * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
+	totalSize := ms.Topo.GetDiskUsages().GetMaxVolumeCount() * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
 
 	resp := &master_pb.StatisticsResponse{
 		TotalSize: uint64(totalSize),
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 28737324c..e68dafc5a 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -3,7 +3,7 @@ package weed_server
 import (
 	"context"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"math/rand"
 	"net/http"
 	"strconv"
@@ -158,7 +158,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 	if err != nil {
 		return nil, err
 	}
-	diskType := storage.ToDiskType(r.FormValue("disk"))
+	diskType := types.ToDiskType(r.FormValue("disk"))
 
 	preallocate := ms.preallocateSize
 	if r.FormValue("preallocate") != "" {
diff --git a/weed/server/volume_grpc_admin.go b/weed/server/volume_grpc_admin.go
index 55bb6573e..3b83853b9 100644
--- a/weed/server/volume_grpc_admin.go
+++ b/weed/server/volume_grpc_admin.go
@@ -3,7 +3,6 @@ package weed_server
 import (
 	"context"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/storage"
 	"path/filepath"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -42,7 +41,7 @@ func (vs *VolumeServer) AllocateVolume(ctx context.Context, req *volume_server_p
 		req.Ttl,
 		req.Preallocate,
 		req.MemoryMapMaxSizeMb,
-		storage.DiskType(req.DiskType),
+		types.DiskType(req.DiskType),
 	)
 
 	if err != nil {
diff --git a/weed/server/volume_grpc_client_to_master.go b/weed/server/volume_grpc_client_to_master.go
index 2f594fa2b..323667d2e 100644
--- a/weed/server/volume_grpc_client_to_master.go
+++ b/weed/server/volume_grpc_client_to_master.go
@@ -222,7 +222,6 @@ func (vs *VolumeServer) doHeartbeat(masterNode, masterGrpcAddress string, grpcDi
 				Ip:             vs.store.Ip,
 				Port:           uint32(vs.store.Port),
 				PublicUrl:      vs.store.PublicUrl,
-				MaxVolumeCount: uint32(0),
 				MaxFileKey:     uint64(0),
 				DataCenter:     vs.store.GetDataCenter(),
 				Rack:           vs.store.GetRack(),
diff --git a/weed/server/volume_grpc_copy.go b/weed/server/volume_grpc_copy.go
index 8fe71bd2e..8cdb9ec27 100644
--- a/weed/server/volume_grpc_copy.go
+++ b/weed/server/volume_grpc_copy.go
@@ -3,6 +3,7 @@ package weed_server
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
 	"io/ioutil"
 	"math"
@@ -58,7 +59,7 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
 		if req.DiskType != "" {
 			diskType = req.DiskType
 		}
-		location := vs.store.FindFreeLocation(storage.DiskType(diskType))
+		location := vs.store.FindFreeLocation(types.DiskType(diskType))
 		if location == nil {
 			return fmt.Errorf("no space left")
 		}
diff --git a/weed/server/volume_grpc_erasure_coding.go b/weed/server/volume_grpc_erasure_coding.go
index e13afdf55..452c2766e 100644
--- a/weed/server/volume_grpc_erasure_coding.go
+++ b/weed/server/volume_grpc_erasure_coding.go
@@ -105,7 +105,7 @@ func (vs *VolumeServer) VolumeEcShardsCopy(ctx context.Context, req *volume_serv
 
 	glog.V(0).Infof("VolumeEcShardsCopy: %v", req)
 
-	location := vs.store.FindFreeLocation(storage.HardDriveType)
+	location := vs.store.FindFreeLocation(types.HardDriveType)
 	if location == nil {
 		return nil, fmt.Errorf("no space left")
 	}
diff --git a/weed/server/volume_server.go b/weed/server/volume_server.go
index 4cdb1628b..e496b1ce2 100644
--- a/weed/server/volume_server.go
+++ b/weed/server/volume_server.go
@@ -2,6 +2,7 @@ package weed_server
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"net/http"
 
 	"google.golang.org/grpc"
@@ -37,7 +38,7 @@ type VolumeServer struct {
 
 func NewVolumeServer(adminMux, publicMux *http.ServeMux, ip string,
 	port int, publicUrl string,
-	folders []string, maxCounts []int, minFreeSpacePercents []float32, diskTypes []storage.DiskType,
+	folders []string, maxCounts []int, minFreeSpacePercents []float32, diskTypes []types.DiskType,
 	idxFolder string,
 	needleMapKind storage.NeedleMapKind,
 	masterNodes []string, pulseSeconds int,
diff --git a/weed/shell/command_ec_balance.go b/weed/shell/command_ec_balance.go
index 7117f52df..546a8340e 100644
--- a/weed/shell/command_ec_balance.go
+++ b/weed/shell/command_ec_balance.go
@@ -3,6 +3,7 @@ package shell
 import (
 	"flag"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
 	"sort"
 
@@ -386,11 +387,12 @@ func doBalanceEcRack(commandEnv *CommandEnv, ecRack *EcRack, applyBalancing bool
 		rackEcNodes = append(rackEcNodes, node)
 	}
 
-	ecNodeIdToShardCount := groupByCount(rackEcNodes, func(node *EcNode) (id string, count int) {
-		for _, ecShardInfo := range node.info.EcShardInfos {
+	ecNodeIdToShardCount := groupByCount(rackEcNodes, func(ecNode *EcNode) (id string, count int) {
+		diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+		for _, ecShardInfo := range diskInfo.EcShardInfos {
 			count += erasure_coding.ShardBits(ecShardInfo.EcIndexBits).ShardIdCount()
 		}
-		return node.info.Id, count
+		return ecNode.info.Id, count
 	})
 
 	var totalShardCount int
@@ -411,10 +413,12 @@ func doBalanceEcRack(commandEnv *CommandEnv, ecRack *EcRack, applyBalancing bool
 		if fullNodeShardCount > averageShardCount && emptyNodeShardCount+1 <= averageShardCount {
 
 			emptyNodeIds := make(map[uint32]bool)
-			for _, shards := range emptyNode.info.EcShardInfos {
+			emptyDiskInfo := emptyNode.info.DiskInfos[string(types.HardDriveType)]
+			for _, shards := range emptyDiskInfo.EcShardInfos {
 				emptyNodeIds[shards.Id] = true
 			}
-			for _, shards := range fullNode.info.EcShardInfos {
+			fullDiskInfo := fullNode.info.DiskInfos[string(types.HardDriveType)]
+			for _, shards := range fullDiskInfo.EcShardInfos {
 				if _, found := emptyNodeIds[shards.Id]; !found {
 					for _, shardId := range erasure_coding.ShardBits(shards.EcIndexBits).ShardIds() {
 
@@ -511,7 +515,8 @@ func pickNEcShardsToMoveFrom(ecNodes []*EcNode, vid needle.VolumeId, n int) map[
 func collectVolumeIdToEcNodes(allEcNodes []*EcNode) map[needle.VolumeId][]*EcNode {
 	vidLocations := make(map[needle.VolumeId][]*EcNode)
 	for _, ecNode := range allEcNodes {
-		for _, shardInfo := range ecNode.info.EcShardInfos {
+		diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+		for _, shardInfo := range diskInfo.EcShardInfos {
 			vidLocations[needle.VolumeId(shardInfo.Id)] = append(vidLocations[needle.VolumeId(shardInfo.Id)], ecNode)
 		}
 	}
diff --git a/weed/shell/command_ec_common.go b/weed/shell/command_ec_common.go
index a808335eb..7c23fda0e 100644
--- a/weed/shell/command_ec_common.go
+++ b/weed/shell/command_ec_common.go
@@ -3,6 +3,7 @@ package shell
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"math"
 	"sort"
 
@@ -159,8 +160,15 @@ func countShards(ecShardInfos []*master_pb.VolumeEcShardInformationMessage) (cou
 	return
 }
 
-func countFreeShardSlots(dn *master_pb.DataNodeInfo) (count int) {
-	return int(dn.MaxVolumeCount-dn.ActiveVolumeCount)*erasure_coding.DataShardsCount - countShards(dn.EcShardInfos)
+func countFreeShardSlots(dn *master_pb.DataNodeInfo, diskType types.DiskType) (count int) {
+	if dn.DiskInfos == nil {
+		return 0
+	}
+	diskInfo := dn.DiskInfos[string(diskType)]
+	if diskInfo == nil {
+		return 0
+	}
+	return int(diskInfo.MaxVolumeCount-diskInfo.ActiveVolumeCount)*erasure_coding.DataShardsCount - countShards(diskInfo.EcShardInfos)
 }
 
 type RackId string
@@ -174,10 +182,12 @@ type EcNode struct {
 }
 
 func (ecNode *EcNode) localShardIdCount(vid uint32) int {
-	for _, ecShardInfo := range ecNode.info.EcShardInfos {
-		if vid == ecShardInfo.Id {
-			shardBits := erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
-			return shardBits.ShardIdCount()
+	for _, diskInfo := range ecNode.info.DiskInfos {
+		for _, ecShardInfo := range diskInfo.EcShardInfos {
+			if vid == ecShardInfo.Id {
+				shardBits := erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
+				return shardBits.ShardIdCount()
+			}
 		}
 	}
 	return 0
@@ -214,7 +224,7 @@ func collectEcVolumeServersByDc(topo *master_pb.TopologyInfo, selectedDataCenter
 			return
 		}
 
-		freeEcSlots := countFreeShardSlots(dn)
+		freeEcSlots := countFreeShardSlots(dn, types.HardDriveType)
 		ecNodes = append(ecNodes, &EcNode{
 			info:       dn,
 			dc:         dc,
@@ -278,7 +288,8 @@ func ceilDivide(total, n int) int {
 
 func findEcVolumeShards(ecNode *EcNode, vid needle.VolumeId) erasure_coding.ShardBits {
 
-	for _, shardInfo := range ecNode.info.EcShardInfos {
+	diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+	for _, shardInfo := range diskInfo.EcShardInfos {
 		if needle.VolumeId(shardInfo.Id) == vid {
 			return erasure_coding.ShardBits(shardInfo.EcIndexBits)
 		}
@@ -290,7 +301,8 @@ func findEcVolumeShards(ecNode *EcNode, vid needle.VolumeId) erasure_coding.Shar
 func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string, shardIds []uint32) *EcNode {
 
 	foundVolume := false
-	for _, shardInfo := range ecNode.info.EcShardInfos {
+	diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+	for _, shardInfo := range diskInfo.EcShardInfos {
 		if needle.VolumeId(shardInfo.Id) == vid {
 			oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
 			newShardBits := oldShardBits
@@ -309,10 +321,11 @@ func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string,
 		for _, shardId := range shardIds {
 			newShardBits = newShardBits.AddShardId(erasure_coding.ShardId(shardId))
 		}
-		ecNode.info.EcShardInfos = append(ecNode.info.EcShardInfos, &master_pb.VolumeEcShardInformationMessage{
+		diskInfo.EcShardInfos = append(diskInfo.EcShardInfos, &master_pb.VolumeEcShardInformationMessage{
 			Id:          uint32(vid),
 			Collection:  collection,
 			EcIndexBits: uint32(newShardBits),
+			DiskType:    string(types.HardDriveType),
 		})
 		ecNode.freeEcSlot -= len(shardIds)
 	}
@@ -322,7 +335,8 @@ func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string,
 
 func (ecNode *EcNode) deleteEcVolumeShards(vid needle.VolumeId, shardIds []uint32) *EcNode {
 
-	for _, shardInfo := range ecNode.info.EcShardInfos {
+	diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+	for _, shardInfo := range diskInfo.EcShardInfos {
 		if needle.VolumeId(shardInfo.Id) == vid {
 			oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
 			newShardBits := oldShardBits
diff --git a/weed/shell/command_ec_decode.go b/weed/shell/command_ec_decode.go
index da7c8844f..61b810a8c 100644
--- a/weed/shell/command_ec_decode.go
+++ b/weed/shell/command_ec_decode.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
 
 	"google.golang.org/grpc"
@@ -225,7 +226,8 @@ func collectTopologyInfo(commandEnv *CommandEnv) (topoInfo *master_pb.TopologyIn
 func collectEcShardInfos(topoInfo *master_pb.TopologyInfo, selectedCollection string, vid needle.VolumeId) (ecShardInfos []*master_pb.VolumeEcShardInformationMessage) {
 
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		for _, v := range dn.EcShardInfos {
+		diskInfo := dn.DiskInfos[string(types.HardDriveType)]
+		for _, v := range diskInfo.EcShardInfos {
 			if v.Collection == selectedCollection && v.Id == uint32(vid) {
 				ecShardInfos = append(ecShardInfos, v)
 			}
@@ -239,7 +241,8 @@ func collectEcShardIds(topoInfo *master_pb.TopologyInfo, selectedCollection stri
 
 	vidMap := make(map[uint32]bool)
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		for _, v := range dn.EcShardInfos {
+		diskInfo := dn.DiskInfos[string(types.HardDriveType)]
+		for _, v := range diskInfo.EcShardInfos {
 			if v.Collection == selectedCollection {
 				vidMap[v.Id] = true
 			}
@@ -257,7 +260,8 @@ func collectEcNodeShardBits(topoInfo *master_pb.TopologyInfo, vid needle.VolumeI
 
 	nodeToEcIndexBits := make(map[string]erasure_coding.ShardBits)
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		for _, v := range dn.EcShardInfos {
+		diskInfo := dn.DiskInfos[string(types.HardDriveType)]
+		for _, v := range diskInfo.EcShardInfos {
 			if v.Id == uint32(vid) {
 				nodeToEcIndexBits[dn.Id] = erasure_coding.ShardBits(v.EcIndexBits)
 			}
diff --git a/weed/shell/command_ec_encode.go b/weed/shell/command_ec_encode.go
index b048b4cd3..e937f4490 100644
--- a/weed/shell/command_ec_encode.go
+++ b/weed/shell/command_ec_encode.go
@@ -281,10 +281,12 @@ func collectVolumeIdsForEcEncode(commandEnv *CommandEnv, selectedCollection stri
 
 	vidMap := make(map[uint32]bool)
 	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		for _, v := range dn.VolumeInfos {
-			if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds {
-				if float64(v.Size) > fullPercentage/100*float64(resp.VolumeSizeLimitMb)*1024*1024 {
-					vidMap[v.Id] = true
+		for _, diskInfo := range dn.DiskInfos {
+			for _, v := range diskInfo.VolumeInfos {
+				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds {
+					if float64(v.Size) > fullPercentage/100*float64(resp.VolumeSizeLimitMb)*1024*1024 {
+						vidMap[v.Id] = true
+					}
 				}
 			}
 		}
diff --git a/weed/shell/command_ec_rebuild.go b/weed/shell/command_ec_rebuild.go
index df28681fe..8d5d7bb91 100644
--- a/weed/shell/command_ec_rebuild.go
+++ b/weed/shell/command_ec_rebuild.go
@@ -188,10 +188,12 @@ func prepareDataToRecover(commandEnv *CommandEnv, rebuilder *EcNode, collection
 
 	needEcxFile := true
 	var localShardBits erasure_coding.ShardBits
-	for _, ecShardInfo := range rebuilder.info.EcShardInfos {
-		if ecShardInfo.Collection == collection && needle.VolumeId(ecShardInfo.Id) == volumeId {
-			needEcxFile = false
-			localShardBits = erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
+	for _, diskInfo := range rebuilder.info.DiskInfos {
+		for _, ecShardInfo := range diskInfo.EcShardInfos {
+			if ecShardInfo.Collection == collection && needle.VolumeId(ecShardInfo.Id) == volumeId {
+				needEcxFile = false
+				localShardBits = erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
+			}
 		}
 	}
 
@@ -247,15 +249,17 @@ type EcShardMap map[needle.VolumeId]EcShardLocations
 type EcShardLocations [][]*EcNode
 
 func (ecShardMap EcShardMap) registerEcNode(ecNode *EcNode, collection string) {
-	for _, shardInfo := range ecNode.info.EcShardInfos {
-		if shardInfo.Collection == collection {
-			existing, found := ecShardMap[needle.VolumeId(shardInfo.Id)]
-			if !found {
-				existing = make([][]*EcNode, erasure_coding.TotalShardsCount)
-				ecShardMap[needle.VolumeId(shardInfo.Id)] = existing
-			}
-			for _, shardId := range erasure_coding.ShardBits(shardInfo.EcIndexBits).ShardIds() {
-				existing[shardId] = append(existing[shardId], ecNode)
+	for _, diskInfo := range ecNode.info.DiskInfos {
+		for _, shardInfo := range diskInfo.EcShardInfos {
+			if shardInfo.Collection == collection {
+				existing, found := ecShardMap[needle.VolumeId(shardInfo.Id)]
+				if !found {
+					existing = make([][]*EcNode, erasure_coding.TotalShardsCount)
+					ecShardMap[needle.VolumeId(shardInfo.Id)] = existing
+				}
+				for _, shardId := range erasure_coding.ShardBits(shardInfo.EcIndexBits).ShardIds() {
+					existing[shardId] = append(existing[shardId], ecNode)
+				}
 			}
 		}
 	}
diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index 6dd248844..9fa915ea4 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -4,8 +4,8 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
 	"os"
 	"sort"
@@ -111,7 +111,7 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 	return nil
 }
 
-func balanceVolumeServers(commandEnv *CommandEnv, diskTypes []storage.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
+func balanceVolumeServers(commandEnv *CommandEnv, diskTypes []types.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
 	for _, diskType := range diskTypes {
 		if err := balanceVolumeServersByDiskType(commandEnv, diskType, volumeReplicas, nodes, volumeSizeLimit, collection, applyBalancing); err != nil {
@@ -122,7 +122,7 @@ func balanceVolumeServers(commandEnv *CommandEnv, diskTypes []storage.DiskType,
 
 }
 
-func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType storage.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
+func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType types.DiskType, volumeReplicas map[uint32][]*VolumeReplica, nodes []*Node, volumeSizeLimit uint64, collection string, applyBalancing bool) error {
 
 	// balance writable volumes
 	for _, n := range nodes {
@@ -135,7 +135,7 @@ func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType storage.Dis
 			return v.DiskType == string(diskType) && (!v.ReadOnly && v.Size < volumeSizeLimit)
 		})
 	}
-	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortWritableVolumes, applyBalancing); err != nil {
+	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount(diskType), sortWritableVolumes, applyBalancing); err != nil {
 		return err
 	}
 
@@ -150,7 +150,7 @@ func balanceVolumeServersByDiskType(commandEnv *CommandEnv, diskType storage.Dis
 			return v.DiskType == string(diskType) && (v.ReadOnly || v.Size >= volumeSizeLimit)
 		})
 	}
-	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount, sortReadOnlyVolumes, applyBalancing); err != nil {
+	if err := balanceSelectedVolume(commandEnv, volumeReplicas, nodes, capacityByMaxVolumeCount(diskType), sortReadOnlyVolumes, applyBalancing); err != nil {
 		return err
 	}
 
@@ -175,21 +175,21 @@ func collectVolumeServersByDc(t *master_pb.TopologyInfo, selectedDataCenter stri
 	return
 }
 
-func collectVolumeDiskTypes(t *master_pb.TopologyInfo) (diskTypes []storage.DiskType) {
+func collectVolumeDiskTypes(t *master_pb.TopologyInfo) (diskTypes []types.DiskType) {
 	knownTypes := make(map[string]bool)
 	for _, dc := range t.DataCenterInfos {
 		for _, r := range dc.RackInfos {
 			for _, dn := range r.DataNodeInfos {
-				for _, vi := range dn.VolumeInfos {
-					if _, found := knownTypes[vi.DiskType]; !found {
-						knownTypes[vi.DiskType] = true
+				for diskType, _ := range dn.DiskInfos {
+					if _, found := knownTypes[diskType]; !found {
+						knownTypes[diskType] = true
 					}
 				}
 			}
 		}
 	}
 	for diskType, _ := range knownTypes {
-		diskTypes = append(diskTypes, storage.ToDiskType(diskType))
+		diskTypes = append(diskTypes, types.ToDiskType(diskType))
 	}
 	return
 }
@@ -203,11 +203,11 @@ type Node struct {
 
 type CapacityFunc func(*master_pb.DataNodeInfo) int
 
-func capacityByMaxSsdVolumeCount(info *master_pb.DataNodeInfo) int {
-	return int(info.MaxSsdVolumeCount)
-}
-func capacityByMaxVolumeCount(info *master_pb.DataNodeInfo) int {
-	return int(info.MaxVolumeCount)
+func capacityByMaxVolumeCount(diskType types.DiskType) CapacityFunc {
+	return func(info *master_pb.DataNodeInfo) int {
+		diskInfo := info.DiskInfos[string(diskType)]
+		return int(diskInfo.MaxVolumeCount)
+	}
 }
 
 func (n *Node) localVolumeRatio(capacityFunc CapacityFunc) float64 {
@@ -220,9 +220,11 @@ func (n *Node) localVolumeNextRatio(capacityFunc CapacityFunc) float64 {
 
 func (n *Node) selectVolumes(fn func(v *master_pb.VolumeInformationMessage) bool) {
 	n.selectedVolumes = make(map[uint32]*master_pb.VolumeInformationMessage)
-	for _, v := range n.info.VolumeInfos {
-		if fn(v) {
-			n.selectedVolumes[v.Id] = v
+	for _, diskInfo := range n.info.DiskInfos {
+		for _, v := range diskInfo.VolumeInfos {
+			if fn(v) {
+				n.selectedVolumes[v.Id] = v
+			}
 		}
 	}
 }
@@ -329,7 +331,7 @@ func moveVolume(commandEnv *CommandEnv, v *master_pb.VolumeInformationMessage, f
 	}
 	fmt.Fprintf(os.Stdout, "  moving %s volume %s%d %s => %s\n", v.DiskType, collectionPrefix, v.Id, fullNode.info.Id, emptyNode.info.Id)
 	if applyChange {
-		return LiveMoveVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second, "")
+		return LiveMoveVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second, v.DiskType)
 	}
 	return nil
 }
diff --git a/weed/shell/command_volume_configure_replication.go b/weed/shell/command_volume_configure_replication.go
index 539bdb515..ecbe402e8 100644
--- a/weed/shell/command_volume_configure_replication.go
+++ b/weed/shell/command_volume_configure_replication.go
@@ -71,10 +71,12 @@ func (c *commandVolumeConfigureReplication) Do(args []string, commandEnv *Comman
 	var allLocations []location
 	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		loc := newLocation(dc, string(rack), dn)
-		for _, v := range dn.VolumeInfos {
-			if v.Id == uint32(vid) && v.ReplicaPlacement != replicaPlacementInt32 {
-				allLocations = append(allLocations, loc)
-				continue
+		for _, diskInfo := range dn.DiskInfos {
+			for _, v := range diskInfo.VolumeInfos {
+				if v.Id == uint32(vid) && v.ReplicaPlacement != replicaPlacementInt32 {
+					allLocations = append(allLocations, loc)
+					continue
+				}
 			}
 		}
 	})
diff --git a/weed/shell/command_volume_fix_replication.go b/weed/shell/command_volume_fix_replication.go
index 8ae8850f3..c7de14318 100644
--- a/weed/shell/command_volume_fix_replication.go
+++ b/weed/shell/command_volume_fix_replication.go
@@ -102,8 +102,6 @@ func (c *commandVolumeFixReplication) Do(args []string, commandEnv *CommandEnv,
 	}
 
 	// find the most under populated data nodes
-	keepDataNodesSorted(allLocations)
-
 	return c.fixUnderReplicatedVolumes(commandEnv, writer, takeAction, underReplicatedVolumeIds, volumeReplicas, allLocations)
 
 }
@@ -113,11 +111,13 @@ func collectVolumeReplicaLocations(resp *master_pb.VolumeListResponse) (map[uint
 	var allLocations []location
 	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		loc := newLocation(dc, string(rack), dn)
-		for _, v := range dn.VolumeInfos {
-			volumeReplicas[v.Id] = append(volumeReplicas[v.Id], &VolumeReplica{
-				location: &loc,
-				info:     v,
-			})
+		for _, diskInfo := range dn.DiskInfos {
+			for _, v := range diskInfo.VolumeInfos {
+				volumeReplicas[v.Id] = append(volumeReplicas[v.Id], &VolumeReplica{
+					location: &loc,
+					info:     v,
+				})
+			}
 		}
 		allLocations = append(allLocations, loc)
 	})
@@ -157,15 +157,17 @@ func (c *commandVolumeFixReplication) fixOverReplicatedVolumes(commandEnv *Comma
 }
 
 func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *CommandEnv, writer io.Writer, takeAction bool, underReplicatedVolumeIds []uint32, volumeReplicas map[uint32][]*VolumeReplica, allLocations []location) error {
+
 	for _, vid := range underReplicatedVolumeIds {
 		replicas := volumeReplicas[vid]
 		replica := pickOneReplicaToCopyFrom(replicas)
 		replicaPlacement, _ := super_block.NewReplicaPlacementFromByte(byte(replica.info.ReplicaPlacement))
 		foundNewLocation := false
 		hasSkippedCollection := false
+		keepDataNodesSorted(allLocations, replica.info.DiskType)
 		for _, dst := range allLocations {
 			// check whether data nodes satisfy the constraints
-			if dst.dataNode.FreeVolumeCount > 0 && satisfyReplicaPlacement(replicaPlacement, replicas, dst) {
+			if dst.dataNode.DiskInfos[replica.info.DiskType].FreeVolumeCount > 0 && satisfyReplicaPlacement(replicaPlacement, replicas, dst) {
 				// check collection name pattern
 				if *c.collectionPattern != "" {
 					matched, err := filepath.Match(*c.collectionPattern, replica.info.Collection)
@@ -202,11 +204,11 @@ func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *Comm
 				}
 
 				// adjust free volume count
-				dst.dataNode.FreeVolumeCount--
-				keepDataNodesSorted(allLocations)
+				dst.dataNode.DiskInfos[replica.info.DiskType].FreeVolumeCount--
 				break
 			}
 		}
+
 		if !foundNewLocation && !hasSkippedCollection {
 			fmt.Fprintf(writer, "failed to place volume %d replica as %s, existing:%+v\n", replica.info.Id, replicaPlacement, len(replicas))
 		}
@@ -215,9 +217,9 @@ func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *Comm
 	return nil
 }
 
-func keepDataNodesSorted(dataNodes []location) {
+func keepDataNodesSorted(dataNodes []location, diskType string) {
 	sort.Slice(dataNodes, func(i, j int) bool {
-		return dataNodes[i].dataNode.FreeVolumeCount > dataNodes[j].dataNode.FreeVolumeCount
+		return dataNodes[i].dataNode.DiskInfos[diskType].FreeVolumeCount > dataNodes[j].dataNode.DiskInfos[diskType].FreeVolumeCount
 	})
 }
 
diff --git a/weed/shell/command_volume_fsck.go b/weed/shell/command_volume_fsck.go
index 75b0f28da..677f38856 100644
--- a/weed/shell/command_volume_fsck.go
+++ b/weed/shell/command_volume_fsck.go
@@ -285,18 +285,20 @@ func (c *commandVolumeFsck) collectVolumeIds(verbose bool, writer io.Writer) (vo
 	}
 
 	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, t *master_pb.DataNodeInfo) {
-		for _, vi := range t.VolumeInfos {
-			volumeIdToServer[vi.Id] = VInfo{
-				server:     t.Id,
-				collection: vi.Collection,
-				isEcVolume: false,
+		for _, diskInfo := range t.DiskInfos{
+			for _, vi := range diskInfo.VolumeInfos {
+				volumeIdToServer[vi.Id] = VInfo{
+					server:     t.Id,
+					collection: vi.Collection,
+					isEcVolume: false,
+				}
 			}
-		}
-		for _, ecShardInfo := range t.EcShardInfos {
-			volumeIdToServer[ecShardInfo.Id] = VInfo{
-				server:     t.Id,
-				collection: ecShardInfo.Collection,
-				isEcVolume: true,
+			for _, ecShardInfo := range diskInfo.EcShardInfos {
+				volumeIdToServer[ecShardInfo.Id] = VInfo{
+					server:     t.Id,
+					collection: ecShardInfo.Collection,
+					isEcVolume: true,
+				}
 			}
 		}
 	})
diff --git a/weed/shell/command_volume_list.go b/weed/shell/command_volume_list.go
index c5a9388fa..a2ee7efd1 100644
--- a/weed/shell/command_volume_list.go
+++ b/weed/shell/command_volume_list.go
@@ -1,6 +1,7 @@
 package shell
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
@@ -44,8 +45,22 @@ func (c *commandVolumeList) Do(args []string, commandEnv *CommandEnv, writer io.
 	return nil
 }
 
+func diskInfosToString(diskInfos map[string]*master_pb.DiskInfo) string {
+	var buf bytes.Buffer
+	for diskType, diskInfo := range diskInfos {
+		fmt.Fprintf(&buf, " %s(volume:%d/%d active:%d free:%d remote:%d)", diskType, diskInfo.VolumeCount, diskInfo.MaxVolumeCount, diskInfo.ActiveVolumeCount, diskInfo.FreeVolumeCount, diskInfo.RemoteVolumeCount)
+	}
+	return buf.String()
+}
+
+func diskInfoToString(diskInfo *master_pb.DiskInfo) string {
+	var buf bytes.Buffer
+	fmt.Fprintf(&buf, "volume:%d/%d active:%d free:%d remote:%d", diskInfo.VolumeCount, diskInfo.MaxVolumeCount, diskInfo.ActiveVolumeCount, diskInfo.FreeVolumeCount, diskInfo.RemoteVolumeCount)
+	return buf.String()
+}
+
 func writeTopologyInfo(writer io.Writer, t *master_pb.TopologyInfo, volumeSizeLimitMb uint64) statistics {
-	fmt.Fprintf(writer, "Topology volume:%d/%d active:%d free:%d remote:%d volumeSizeLimit:%d MB\n", t.VolumeCount, t.MaxVolumeCount, t.ActiveVolumeCount, t.FreeVolumeCount, t.RemoteVolumeCount, volumeSizeLimitMb)
+	fmt.Fprintf(writer, "Topology volumeSizeLimit:%d MB%s\n", volumeSizeLimitMb, diskInfosToString(t.DiskInfos))
 	sort.Slice(t.DataCenterInfos, func(i, j int) bool {
 		return t.DataCenterInfos[i].Id < t.DataCenterInfos[j].Id
 	})
@@ -57,7 +72,7 @@ func writeTopologyInfo(writer io.Writer, t *master_pb.TopologyInfo, volumeSizeLi
 	return s
 }
 func writeDataCenterInfo(writer io.Writer, t *master_pb.DataCenterInfo) statistics {
-	fmt.Fprintf(writer, "  DataCenter %s volume:%d/%d active:%d free:%d remote:%d\n", t.Id, t.VolumeCount, t.MaxVolumeCount, t.ActiveVolumeCount, t.FreeVolumeCount, t.RemoteVolumeCount)
+	fmt.Fprintf(writer, "  DataCenter %s%s\n", t.Id, diskInfosToString(t.DiskInfos))
 	var s statistics
 	sort.Slice(t.RackInfos, func(i, j int) bool {
 		return t.RackInfos[i].Id < t.RackInfos[j].Id
@@ -69,7 +84,7 @@ func writeDataCenterInfo(writer io.Writer, t *master_pb.DataCenterInfo) statisti
 	return s
 }
 func writeRackInfo(writer io.Writer, t *master_pb.RackInfo) statistics {
-	fmt.Fprintf(writer, "    Rack %s volume:%d/%d active:%d free:%d remote:%d\n", t.Id, t.VolumeCount, t.MaxVolumeCount, t.ActiveVolumeCount, t.FreeVolumeCount, t.RemoteVolumeCount)
+	fmt.Fprintf(writer, "    Rack %s%s\n", t.Id, diskInfosToString(t.DiskInfos))
 	var s statistics
 	sort.Slice(t.DataNodeInfos, func(i, j int) bool {
 		return t.DataNodeInfos[i].Id < t.DataNodeInfos[j].Id
@@ -81,8 +96,18 @@ func writeRackInfo(writer io.Writer, t *master_pb.RackInfo) statistics {
 	return s
 }
 func writeDataNodeInfo(writer io.Writer, t *master_pb.DataNodeInfo) statistics {
-	fmt.Fprintf(writer, "      DataNode %s volume:%d/%d active:%d free:%d remote:%d\n", t.Id, t.VolumeCount, t.MaxVolumeCount, t.ActiveVolumeCount, t.FreeVolumeCount, t.RemoteVolumeCount)
+	fmt.Fprintf(writer, "      DataNode %s%s\n", t.Id, diskInfosToString(t.DiskInfos))
 	var s statistics
+	for _, diskInfo := range t.DiskInfos {
+		s = s.plus(writeDiskInfo(writer, diskInfo))
+	}
+	fmt.Fprintf(writer, "      DataNode %s %+v \n", t.Id, s)
+	return s
+}
+
+func writeDiskInfo(writer io.Writer, t *master_pb.DiskInfo) statistics {
+	var s statistics
+	fmt.Fprintf(writer, "        Disk %s(%s)\n", t.Type, diskInfoToString(t))
 	sort.Slice(t.VolumeInfos, func(i, j int) bool {
 		return t.VolumeInfos[i].Id < t.VolumeInfos[j].Id
 	})
@@ -92,9 +117,10 @@ func writeDataNodeInfo(writer io.Writer, t *master_pb.DataNodeInfo) statistics {
 	for _, ecShardInfo := range t.EcShardInfos {
 		fmt.Fprintf(writer, "        ec volume id:%v collection:%v shards:%v\n", ecShardInfo.Id, ecShardInfo.Collection, erasure_coding.ShardBits(ecShardInfo.EcIndexBits).ShardIds())
 	}
-	fmt.Fprintf(writer, "      DataNode %s %+v \n", t.Id, s)
+	fmt.Fprintf(writer, "        Disk %s %+v \n", t.Type, s)
 	return s
 }
+
 func writeVolumeInformationMessage(writer io.Writer, t *master_pb.VolumeInformationMessage) statistics {
 	fmt.Fprintf(writer, "        volume %+v \n", t)
 	return newStatistics(t)
diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index 1539ccb19..b7e06c891 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -8,6 +8,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
 	"os"
 	"sort"
@@ -100,17 +101,19 @@ func evacuateNormalVolumes(commandEnv *CommandEnv, resp *master_pb.VolumeListRes
 
 	// move away normal volumes
 	volumeReplicas, _ := collectVolumeReplicaLocations(resp)
-	for _, vol := range thisNode.info.VolumeInfos {
-		hasMoved, err := moveAwayOneNormalVolume(commandEnv, volumeReplicas, vol, thisNode, otherNodes, applyChange)
-		if err != nil {
-			return fmt.Errorf("move away volume %d from %s: %v", vol.Id, volumeServer, err)
-		}
-		if !hasMoved {
-			if skipNonMoveable {
-				replicaPlacement, _ := super_block.NewReplicaPlacementFromByte(byte(vol.ReplicaPlacement))
-				fmt.Fprintf(writer, "skipping non moveable volume %d replication:%s\n", vol.Id, replicaPlacement.String())
-			} else {
-				return fmt.Errorf("failed to move volume %d from %s", vol.Id, volumeServer)
+	for _, diskInfo := range thisNode.info.DiskInfos {
+		for _, vol := range diskInfo.VolumeInfos {
+			hasMoved, err := moveAwayOneNormalVolume(commandEnv, volumeReplicas, vol, thisNode, otherNodes, applyChange)
+			if err != nil {
+				return fmt.Errorf("move away volume %d from %s: %v", vol.Id, volumeServer, err)
+			}
+			if !hasMoved {
+				if skipNonMoveable {
+					replicaPlacement, _ := super_block.NewReplicaPlacementFromByte(byte(vol.ReplicaPlacement))
+					fmt.Fprintf(writer, "skipping non moveable volume %d replication:%s\n", vol.Id, replicaPlacement.String())
+				} else {
+					return fmt.Errorf("failed to move volume %d from %s", vol.Id, volumeServer)
+				}
 			}
 		}
 	}
@@ -126,16 +129,18 @@ func evacuateEcVolumes(commandEnv *CommandEnv, resp *master_pb.VolumeListRespons
 	}
 
 	// move away ec volumes
-	for _, ecShardInfo := range thisNode.info.EcShardInfos {
-		hasMoved, err := moveAwayOneEcVolume(commandEnv, ecShardInfo, thisNode, otherNodes, applyChange)
-		if err != nil {
-			return fmt.Errorf("move away volume %d from %s: %v", ecShardInfo.Id, volumeServer, err)
-		}
-		if !hasMoved {
-			if skipNonMoveable {
-				fmt.Fprintf(writer, "failed to move away ec volume %d from %s\n", ecShardInfo.Id, volumeServer)
-			} else {
-				return fmt.Errorf("failed to move away ec volume %d from %s", ecShardInfo.Id, volumeServer)
+	for _, diskInfo := range thisNode.info.DiskInfos {
+		for _, ecShardInfo := range diskInfo.EcShardInfos {
+			hasMoved, err := moveAwayOneEcVolume(commandEnv, ecShardInfo, thisNode, otherNodes, applyChange)
+			if err != nil {
+				return fmt.Errorf("move away volume %d from %s: %v", ecShardInfo.Id, volumeServer, err)
+			}
+			if !hasMoved {
+				if skipNonMoveable {
+					fmt.Fprintf(writer, "failed to move away ec volume %d from %s\n", ecShardInfo.Id, volumeServer)
+				} else {
+					return fmt.Errorf("failed to move away ec volume %d from %s", ecShardInfo.Id, volumeServer)
+				}
 			}
 		}
 	}
@@ -175,7 +180,7 @@ func moveAwayOneEcVolume(commandEnv *CommandEnv, ecShardInfo *master_pb.VolumeEc
 
 func moveAwayOneNormalVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, vol *master_pb.VolumeInformationMessage, thisNode *Node, otherNodes []*Node, applyChange bool) (hasMoved bool, err error) {
 	sort.Slice(otherNodes, func(i, j int) bool {
-		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount)+otherNodes[i].localVolumeRatio(capacityByMaxSsdVolumeCount) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount)+otherNodes[j].localVolumeRatio(capacityByMaxSsdVolumeCount)
+		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount(types.DiskType(vol.DiskType))) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount(types.DiskType(vol.DiskType)))
 	})
 
 	for i := 0; i < len(otherNodes); i++ {
diff --git a/weed/shell/command_volume_tier_download.go b/weed/shell/command_volume_tier_download.go
index d31c8c031..8aeb34d5c 100644
--- a/weed/shell/command_volume_tier_download.go
+++ b/weed/shell/command_volume_tier_download.go
@@ -86,9 +86,11 @@ func collectRemoteVolumes(topoInfo *master_pb.TopologyInfo, selectedCollection s
 
 	vidMap := make(map[uint32]bool)
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		for _, v := range dn.VolumeInfos {
-			if v.Collection == selectedCollection && v.RemoteStorageKey != "" && v.RemoteStorageName != "" {
-				vidMap[v.Id] = true
+		for _, diskInfo := range dn.DiskInfos {
+			for _, v := range diskInfo.VolumeInfos {
+				if v.Collection == selectedCollection && v.RemoteStorageKey != "" && v.RemoteStorageName != "" {
+					vidMap[v.Id] = true
+				}
 			}
 		}
 	})
diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
new file mode 100644
index 000000000..dfa82490d
--- /dev/null
+++ b/weed/shell/command_volume_tier_move.go
@@ -0,0 +1,108 @@
+package shell
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
+	"io"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+)
+
+func init() {
+	Commands = append(Commands, &commandVolumeTierMove{})
+}
+
+type commandVolumeTierMove struct {
+}
+
+func (c *commandVolumeTierMove) Name() string {
+	return "volume.tier.upload"
+}
+
+func (c *commandVolumeTierMove) Help() string {
+	return `change a volume from one disk type to another
+
+	volume.tier.move -source=hdd -target=ssd [-collection=""] [-fullPercent=95] [-quietFor=1h]
+	volume.tier.move -target=hdd [-collection=""] -volumeId=<volume_id>
+
+`
+}
+
+func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	if err = commandEnv.confirmIsLocked(); err != nil {
+		return
+	}
+
+	tierCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
+	volumeId := tierCommand.Int("volumeId", 0, "the volume id")
+	collection := tierCommand.String("collection", "", "the collection name")
+	fullPercentage := tierCommand.Float64("fullPercent", 95, "the volume reaches the percentage of max volume size")
+	quietPeriod := tierCommand.Duration("quietFor", 24*time.Hour, "select volumes without no writes for this period")
+	source := tierCommand.String("fromDiskType", "", "the source disk type")
+	target := tierCommand.String("toDiskType", "", "the target disk type")
+	if err = tierCommand.Parse(args); err != nil {
+		return nil
+	}
+
+	if *source == *target {
+		return fmt.Errorf("source tier %s is the same as target tier %s", *source, *target)
+	}
+
+	vid := needle.VolumeId(*volumeId)
+
+	// volumeId is provided
+	if vid != 0 {
+		// return doVolumeTierMove(commandEnv, writer, *collection, vid, *dest, *keepLocalDatFile)
+	}
+
+	// apply to all volumes in the collection
+	// reusing collectVolumeIdsForEcEncode for now
+	volumeIds, err := collectVolumeIdsForTierChange(commandEnv, *source, *collection, *fullPercentage, *quietPeriod)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("tier move volumes: %v\n", volumeIds)
+
+	return nil
+}
+
+func collectVolumeIdsForTierChange(commandEnv *CommandEnv, sourceTier string, selectedCollection string, fullPercentage float64, quietPeriod time.Duration) (vids []needle.VolumeId, err error) {
+
+	var resp *master_pb.VolumeListResponse
+	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
+		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
+		return err
+	})
+	if err != nil {
+		return
+	}
+
+	quietSeconds := int64(quietPeriod / time.Second)
+	nowUnixSeconds := time.Now().Unix()
+
+	fmt.Printf("collect %s volumes quiet for: %d seconds\n", sourceTier, quietSeconds)
+
+	vidMap := make(map[uint32]bool)
+	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
+		for _, diskInfo := range dn.DiskInfos {
+			for _, v := range diskInfo.VolumeInfos {
+				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds && types.DiskType(v.DiskType) == types.ToDiskType(sourceTier) {
+					if float64(v.Size) > fullPercentage/100*float64(resp.VolumeSizeLimitMb)*1024*1024 {
+						vidMap[v.Id] = true
+					}
+				}
+			}
+		}
+	})
+
+	for vid := range vidMap {
+		vids = append(vids, needle.VolumeId(vid))
+	}
+
+	return
+}
diff --git a/weed/storage/disk_location.go b/weed/storage/disk_location.go
index 7292c23f6..6de87c793 100644
--- a/weed/storage/disk_location.go
+++ b/weed/storage/disk_location.go
@@ -2,6 +2,7 @@ package storage
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -19,7 +20,7 @@ import (
 type DiskLocation struct {
 	Directory              string
 	IdxDirectory           string
-	DiskType               DiskType
+	DiskType               types.DiskType
 	MaxVolumeCount         int
 	OriginalMaxVolumeCount int
 	MinFreeSpacePercent    float32
@@ -33,7 +34,7 @@ type DiskLocation struct {
 	isDiskSpaceLow bool
 }
 
-func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32, idxDir string, diskType DiskType) *DiskLocation {
+func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpacePercent float32, idxDir string, diskType types.DiskType) *DiskLocation {
 	dir = util.ResolvePath(dir)
 	if idxDir == "" {
 		idxDir = dir
diff --git a/weed/storage/disk_location_ec.go b/weed/storage/disk_location_ec.go
index d1237b40f..0ab45011c 100644
--- a/weed/storage/disk_location_ec.go
+++ b/weed/storage/disk_location_ec.go
@@ -57,7 +57,7 @@ func (l *DiskLocation) FindEcShard(vid needle.VolumeId, shardId erasure_coding.S
 
 func (l *DiskLocation) LoadEcShard(collection string, vid needle.VolumeId, shardId erasure_coding.ShardId) (err error) {
 
-	ecVolumeShard, err := erasure_coding.NewEcVolumeShard(l.Directory, collection, vid, shardId)
+	ecVolumeShard, err := erasure_coding.NewEcVolumeShard(l.DiskType, l.Directory, collection, vid, shardId)
 	if err != nil {
 		if err == os.ErrNotExist {
 			return os.ErrNotExist
@@ -68,7 +68,7 @@ func (l *DiskLocation) LoadEcShard(collection string, vid needle.VolumeId, shard
 	defer l.ecVolumesLock.Unlock()
 	ecVolume, found := l.ecVolumes[vid]
 	if !found {
-		ecVolume, err = erasure_coding.NewEcVolume(l.Directory, l.IdxDirectory, collection, vid)
+		ecVolume, err = erasure_coding.NewEcVolume(l.DiskType, l.Directory, l.IdxDirectory, collection, vid)
 		if err != nil {
 			return fmt.Errorf("failed to create ec volume %d: %v", vid, err)
 		}
diff --git a/weed/storage/erasure_coding/ec_shard.go b/weed/storage/erasure_coding/ec_shard.go
index 74ed99198..2a57d85ef 100644
--- a/weed/storage/erasure_coding/ec_shard.go
+++ b/weed/storage/erasure_coding/ec_shard.go
@@ -2,6 +2,7 @@ package erasure_coding
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"os"
 	"path"
 	"strconv"
@@ -20,11 +21,12 @@ type EcVolumeShard struct {
 	dir         string
 	ecdFile     *os.File
 	ecdFileSize int64
+	DiskType    types.DiskType
 }
 
-func NewEcVolumeShard(dirname string, collection string, id needle.VolumeId, shardId ShardId) (v *EcVolumeShard, e error) {
+func NewEcVolumeShard(diskType types.DiskType, dirname string, collection string, id needle.VolumeId, shardId ShardId) (v *EcVolumeShard, e error) {
 
-	v = &EcVolumeShard{dir: dirname, Collection: collection, VolumeId: id, ShardId: shardId}
+	v = &EcVolumeShard{dir: dirname, Collection: collection, VolumeId: id, ShardId: shardId, DiskType: diskType}
 
 	baseFileName := v.FileName()
 
diff --git a/weed/storage/erasure_coding/ec_volume.go b/weed/storage/erasure_coding/ec_volume.go
index a9d08ed0e..85d6a5fc8 100644
--- a/weed/storage/erasure_coding/ec_volume.go
+++ b/weed/storage/erasure_coding/ec_volume.go
@@ -36,10 +36,11 @@ type EcVolume struct {
 	Version                   needle.Version
 	ecjFile                   *os.File
 	ecjFileAccessLock         sync.Mutex
+	diskType                  types.DiskType
 }
 
-func NewEcVolume(dir string, dirIdx string, collection string, vid needle.VolumeId) (ev *EcVolume, err error) {
-	ev = &EcVolume{dir: dir, dirIdx: dirIdx, Collection: collection, VolumeId: vid}
+func NewEcVolume(diskType types.DiskType, dir string, dirIdx string, collection string, vid needle.VolumeId) (ev *EcVolume, err error) {
+	ev = &EcVolume{dir: dir, dirIdx: dirIdx, Collection: collection, VolumeId: vid, diskType: diskType}
 
 	dataBaseFileName := EcShardFileName(collection, dir, int(vid))
 	indexBaseFileName := EcShardFileName(collection, dirIdx, int(vid))
@@ -191,6 +192,7 @@ func (ev *EcVolume) ToVolumeEcShardInformationMessage() (messages []*master_pb.V
 			m = &master_pb.VolumeEcShardInformationMessage{
 				Id:         uint32(s.VolumeId),
 				Collection: s.Collection,
+				DiskType:   string(ev.diskType),
 			}
 			messages = append(messages, m)
 		}
diff --git a/weed/storage/erasure_coding/ec_volume_info.go b/weed/storage/erasure_coding/ec_volume_info.go
index 8ff65bb0f..3dd535e64 100644
--- a/weed/storage/erasure_coding/ec_volume_info.go
+++ b/weed/storage/erasure_coding/ec_volume_info.go
@@ -10,13 +10,15 @@ type EcVolumeInfo struct {
 	VolumeId   needle.VolumeId
 	Collection string
 	ShardBits  ShardBits
+	DiskType   string
 }
 
-func NewEcVolumeInfo(collection string, vid needle.VolumeId, shardBits ShardBits) *EcVolumeInfo {
+func NewEcVolumeInfo(diskType string, collection string, vid needle.VolumeId, shardBits ShardBits) *EcVolumeInfo {
 	return &EcVolumeInfo{
 		Collection: collection,
 		VolumeId:   vid,
 		ShardBits:  shardBits,
+		DiskType:   diskType,
 	}
 }
 
@@ -45,6 +47,7 @@ func (ecInfo *EcVolumeInfo) Minus(other *EcVolumeInfo) *EcVolumeInfo {
 		VolumeId:   ecInfo.VolumeId,
 		Collection: ecInfo.Collection,
 		ShardBits:  ecInfo.ShardBits.Minus(other.ShardBits),
+		DiskType:   ecInfo.DiskType,
 	}
 
 	return ret
@@ -55,6 +58,7 @@ func (ecInfo *EcVolumeInfo) ToVolumeEcShardInformationMessage() (ret *master_pb.
 		Id:          uint32(ecInfo.VolumeId),
 		EcIndexBits: uint32(ecInfo.ShardBits),
 		Collection:  ecInfo.Collection,
+		DiskType:    ecInfo.DiskType,
 	}
 }
 
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 4bb05649c..a18d87a77 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -207,19 +207,13 @@ func (s *Store) GetRack() string {
 
 func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 	var volumeMessages []*master_pb.VolumeInformationMessage
-	maxVolumeCount := 0
-	maxSsdVolumeCount := 0
+	maxVolumeCounts := make(map[string]uint32)
 	var maxFileKey NeedleId
 	collectionVolumeSize := make(map[string]uint64)
 	collectionVolumeReadOnlyCount := make(map[string]map[string]uint8)
 	for _, location := range s.Locations {
 		var deleteVids []needle.VolumeId
-		switch location.DiskType {
-		case SsdType:
-			maxSsdVolumeCount = maxSsdVolumeCount + location.MaxVolumeCount
-		case HardDriveType:
-			maxVolumeCount = maxVolumeCount + location.MaxVolumeCount
-		}
+		maxVolumeCounts[string(location.DiskType)] += uint32(location.MaxVolumeCount)
 		location.volumesLock.RLock()
 		for _, v := range location.volumes {
 			curMaxFileKey, volumeMessage := v.ToVolumeInformationMessage()
@@ -294,8 +288,7 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 		Ip:                s.Ip,
 		Port:              uint32(s.Port),
 		PublicUrl:         s.PublicUrl,
-		MaxVolumeCount:    uint32(maxVolumeCount),
-		MaxSsdVolumeCount: uint32(maxSsdVolumeCount),
+		MaxVolumeCounts:   maxVolumeCounts,
 		MaxFileKey:        NeedleIdToUint64(maxFileKey),
 		DataCenter:        s.dataCenter,
 		Rack:              s.rack,
diff --git a/weed/storage/store_ec.go b/weed/storage/store_ec.go
index ab4e96634..a9b6a8ff3 100644
--- a/weed/storage/store_ec.go
+++ b/weed/storage/store_ec.go
@@ -58,6 +58,7 @@ func (s *Store) MountEcShards(collection string, vid needle.VolumeId, shardId er
 				Id:          uint32(vid),
 				Collection:  collection,
 				EcIndexBits: uint32(shardBits.AddShardId(shardId)),
+				DiskType:    string(location.DiskType),
 			}
 			return nil
 		} else if err == os.ErrNotExist {
@@ -82,6 +83,7 @@ func (s *Store) UnmountEcShards(vid needle.VolumeId, shardId erasure_coding.Shar
 		Id:          uint32(vid),
 		Collection:  ecShard.Collection,
 		EcIndexBits: uint32(shardBits.AddShardId(shardId)),
+		DiskType:    string(ecShard.DiskType),
 	}
 
 	for _, location := range s.Locations {
diff --git a/weed/storage/volume_disk_type.go b/weed/storage/types/volume_disk_type.go
similarity index 96%
rename from weed/storage/volume_disk_type.go
rename to weed/storage/types/volume_disk_type.go
index 4d14ada63..459f8b6b7 100644
--- a/weed/storage/volume_disk_type.go
+++ b/weed/storage/types/volume_disk_type.go
@@ -1,4 +1,4 @@
-package storage
+package types
 
 import (
 	"strings"
diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index afa0fbf28..366449c53 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -171,7 +171,7 @@ func (v *Volume) IndexFileSize() uint64 {
 	return v.nm.IndexFileSize()
 }
 
-func (v *Volume) DiskType() DiskType {
+func (v *Volume) DiskType() types.DiskType {
 	return v.location.DiskType
 }
 
diff --git a/weed/topology/collection.go b/weed/topology/collection.go
index 0c5dc5db7..a14b68851 100644
--- a/weed/topology/collection.go
+++ b/weed/topology/collection.go
@@ -2,7 +2,7 @@ package topology
 
 import (
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
@@ -30,12 +30,12 @@ func (c *Collection) String() string {
 	return fmt.Sprintf("Name:%s, volumeSizeLimit:%d, storageType2VolumeLayout:%v", c.Name, c.volumeSizeLimit, c.storageType2VolumeLayout)
 }
 
-func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) *VolumeLayout {
+func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType types.DiskType) *VolumeLayout {
 	keyString := rp.String()
 	if ttl != nil {
 		keyString += ttl.String()
 	}
-	if diskType != storage.HardDriveType {
+	if diskType != types.HardDriveType {
 		keyString += string(diskType)
 	}
 	vl := c.storageType2VolumeLayout.Get(keyString, func() interface{} {
@@ -44,12 +44,12 @@ func (c *Collection) GetOrCreateVolumeLayout(rp *super_block.ReplicaPlacement, t
 	return vl.(*VolumeLayout)
 }
 
-func (c *Collection) DeleteVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) {
+func (c *Collection) DeleteVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType types.DiskType) {
 	keyString := rp.String()
 	if ttl != nil {
 		keyString += ttl.String()
 	}
-	if diskType != storage.HardDriveType {
+	if diskType != types.HardDriveType {
 		keyString += string(diskType)
 	}
 	c.storageType2VolumeLayout.Delete(keyString)
diff --git a/weed/topology/data_center.go b/weed/topology/data_center.go
index 6ca94b52d..250e4bbdd 100644
--- a/weed/topology/data_center.go
+++ b/weed/topology/data_center.go
@@ -1,6 +1,8 @@
 package topology
 
-import "github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+import (
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+)
 
 type DataCenter struct {
 	NodeImpl
@@ -10,6 +12,7 @@ func NewDataCenter(id string) *DataCenter {
 	dc := &DataCenter{}
 	dc.id = NodeId(id)
 	dc.nodeType = "DataCenter"
+	dc.diskUsages = newDiskUsages()
 	dc.children = make(map[NodeId]Node)
 	dc.NodeImpl.value = dc
 	return dc
@@ -30,9 +33,6 @@ func (dc *DataCenter) GetOrCreateRack(rackName string) *Rack {
 func (dc *DataCenter) ToMap() interface{} {
 	m := make(map[string]interface{})
 	m["Id"] = dc.Id()
-	m["Max"] = dc.GetMaxVolumeCount()
-	m["MaxSsd"] = dc.GetMaxSsdVolumeCount()
-	m["Free"] = dc.FreeSpace()
 	var racks []interface{}
 	for _, c := range dc.Children() {
 		rack := c.(*Rack)
@@ -45,13 +45,6 @@ func (dc *DataCenter) ToMap() interface{} {
 func (dc *DataCenter) ToDataCenterInfo() *master_pb.DataCenterInfo {
 	m := &master_pb.DataCenterInfo{
 		Id:                string(dc.Id()),
-		VolumeCount:       uint64(dc.GetVolumeCount()),
-		MaxVolumeCount:    uint64(dc.GetMaxVolumeCount()),
-		MaxSsdVolumeCount: uint64(dc.GetMaxSsdVolumeCount()),
-		SsdVolumeCount:    uint64(dc.GetSsdVolumeCount()),
-		FreeVolumeCount:   uint64(dc.FreeSpace()),
-		ActiveVolumeCount: uint64(dc.GetActiveVolumeCount()),
-		RemoteVolumeCount: uint64(dc.GetRemoteVolumeCount()),
 	}
 	for _, c := range dc.Children() {
 		rack := c.(*Rack)
diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 816139ac3..5b625de80 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -2,13 +2,11 @@ package topology
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"strconv"
-	"sync"
-
-	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
-	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
-	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/storage"
@@ -16,29 +14,26 @@ import (
 
 type DataNode struct {
 	NodeImpl
-	volumes      map[needle.VolumeId]storage.VolumeInfo
 	Ip           string
 	Port         int
 	PublicUrl    string
 	LastSeen     int64 // unix time in seconds
-	ecShards     map[needle.VolumeId]*erasure_coding.EcVolumeInfo
-	ecShardsLock sync.RWMutex
 }
 
 func NewDataNode(id string) *DataNode {
-	s := &DataNode{}
-	s.id = NodeId(id)
-	s.nodeType = "DataNode"
-	s.volumes = make(map[needle.VolumeId]storage.VolumeInfo)
-	s.ecShards = make(map[needle.VolumeId]*erasure_coding.EcVolumeInfo)
-	s.NodeImpl.value = s
-	return s
+	dn := &DataNode{}
+	dn.id = NodeId(id)
+	dn.nodeType = "DataNode"
+	dn.diskUsages = newDiskUsages()
+	dn.children = make(map[NodeId]Node)
+	dn.NodeImpl.value = dn
+	return dn
 }
 
 func (dn *DataNode) String() string {
 	dn.RLock()
 	defer dn.RUnlock()
-	return fmt.Sprintf("Node:%s, volumes:%v, Ip:%s, Port:%d, PublicUrl:%s", dn.NodeImpl.String(), dn.volumes, dn.Ip, dn.Port, dn.PublicUrl)
+	return fmt.Sprintf("Node:%s, Ip:%s, Port:%d, PublicUrl:%s", dn.NodeImpl.String(), dn.Ip, dn.Port, dn.PublicUrl)
 }
 
 func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
@@ -47,37 +42,23 @@ func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO
 	return dn.doAddOrUpdateVolume(v)
 }
 
-func (dn *DataNode) doAddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
-	if oldV, ok := dn.volumes[v.Id]; !ok {
-		dn.volumes[v.Id] = v
-		if v.DiskType == storage.SsdType {
-			dn.UpAdjustSsdVolumeCountDelta(1)
-		} else {
-			dn.UpAdjustVolumeCountDelta(1)
-		}
-		if v.IsRemote() {
-			dn.UpAdjustRemoteVolumeCountDelta(1)
-		}
-		if !v.ReadOnly {
-			dn.UpAdjustActiveVolumeCountDelta(1)
-		}
-		dn.UpAdjustMaxVolumeId(v.Id)
-		isNew = true
-	} else {
-		if oldV.IsRemote() != v.IsRemote() {
-			if v.IsRemote() {
-				dn.UpAdjustRemoteVolumeCountDelta(1)
-			}
-			if oldV.IsRemote() {
-				dn.UpAdjustRemoteVolumeCountDelta(-1)
-			}
-		}
-		isChangedRO = dn.volumes[v.Id].ReadOnly != v.ReadOnly
-		dn.volumes[v.Id] = v
+func (dn *DataNode) getOrCreateDisk(diskType string) *Disk {
+	c, found := dn.children[NodeId(diskType)]
+	if !found {
+		c = NewDisk(diskType)
+		dn.LinkChildNode(c)
 	}
-	return
+	disk := c.(*Disk)
+	return disk
 }
 
+func (dn *DataNode) doAddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
+	disk := dn.getOrCreateDisk(v.DiskType)
+	return disk.AddOrUpdateVolume(v)
+}
+
+// UpdateVolumes detects new/deleted/changed volumes on a volume server
+// used in master to notify master clients of these changes.
 func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolumes, deletedVolumes, changeRO []storage.VolumeInfo) {
 
 	actualVolumeMap := make(map[needle.VolumeId]storage.VolumeInfo)
@@ -88,22 +69,26 @@ func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolume
 	dn.Lock()
 	defer dn.Unlock()
 
-	for vid, v := range dn.volumes {
+	existingVolumes := dn.getVolumes()
+
+	for _, v := range existingVolumes {
+		vid := v.Id
 		if _, ok := actualVolumeMap[vid]; !ok {
 			glog.V(0).Infoln("Deleting volume id:", vid)
-			delete(dn.volumes, vid)
+			disk := dn.getOrCreateDisk(v.DiskType)
+			delete(disk.volumes, vid)
 			deletedVolumes = append(deletedVolumes, v)
-			if v.DiskType == storage.SsdType {
-				dn.UpAdjustSsdVolumeCountDelta(-1)
-			} else {
-				dn.UpAdjustVolumeCountDelta(-1)
-			}
+
+			deltaDiskUsages := newDiskUsages()
+			deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(v.DiskType))
+			deltaDiskUsage.volumeCount = -1
 			if v.IsRemote() {
-				dn.UpAdjustRemoteVolumeCountDelta(-1)
+				deltaDiskUsage.remoteVolumeCount = -1
 			}
 			if !v.ReadOnly {
-				dn.UpAdjustActiveVolumeCountDelta(-1)
+				deltaDiskUsage.activeVolumeCount = -1
 			}
+			disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
 		}
 	}
 	for _, v := range actualVolumes {
@@ -123,18 +108,19 @@ func (dn *DataNode) DeltaUpdateVolumes(newVolumes, deletedVolumes []storage.Volu
 	defer dn.Unlock()
 
 	for _, v := range deletedVolumes {
-		delete(dn.volumes, v.Id)
-		if v.DiskType == storage.SsdType {
-			dn.UpAdjustSsdVolumeCountDelta(-1)
-		} else {
-			dn.UpAdjustVolumeCountDelta(-1)
-		}
+		disk := dn.getOrCreateDisk(v.DiskType)
+		delete(disk.volumes, v.Id)
+
+		deltaDiskUsages := newDiskUsages()
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(v.DiskType))
+		deltaDiskUsage.volumeCount = -1
 		if v.IsRemote() {
-			dn.UpAdjustRemoteVolumeCountDelta(-1)
+			deltaDiskUsage.remoteVolumeCount = -1
 		}
 		if !v.ReadOnly {
-			dn.UpAdjustActiveVolumeCountDelta(-1)
+			deltaDiskUsage.activeVolumeCount = -1
 		}
+		disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
 	}
 	for _, v := range newVolumes {
 		dn.doAddOrUpdateVolume(v)
@@ -144,18 +130,26 @@ func (dn *DataNode) DeltaUpdateVolumes(newVolumes, deletedVolumes []storage.Volu
 
 func (dn *DataNode) GetVolumes() (ret []storage.VolumeInfo) {
 	dn.RLock()
-	for _, v := range dn.volumes {
-		ret = append(ret, v)
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		ret = append(ret, disk.GetVolumes()...)
 	}
 	dn.RUnlock()
 	return ret
 }
 
-func (dn *DataNode) GetVolumesById(id needle.VolumeId) (storage.VolumeInfo, error) {
+func (dn *DataNode) GetVolumesById(id needle.VolumeId) (vInfo storage.VolumeInfo, err error) {
 	dn.RLock()
 	defer dn.RUnlock()
-	vInfo, ok := dn.volumes[id]
-	if ok {
+	found := false
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		vInfo, found = disk.volumes[id]
+		if found {
+			break
+		}
+	}
+	if found {
 		return vInfo, nil
 	} else {
 		return storage.VolumeInfo{}, fmt.Errorf("volumeInfo not found")
@@ -193,31 +187,18 @@ func (dn *DataNode) Url() string {
 func (dn *DataNode) ToMap() interface{} {
 	ret := make(map[string]interface{})
 	ret["Url"] = dn.Url()
-	ret["Volumes"] = dn.GetVolumeCount() + dn.GetSsdVolumeCount()
-	ret["VolumeIds"] = dn.GetVolumeIds()
-	ret["EcShards"] = dn.GetEcShardCount()
-	ret["Max"] = dn.GetMaxVolumeCount() + dn.GetMaxSsdVolumeCount()
-	ret["Free"] = dn.FreeSpace()
 	ret["PublicUrl"] = dn.PublicUrl
+	ret["Disks"] = dn.diskUsages.ToMap()
 	return ret
 }
 
 func (dn *DataNode) ToDataNodeInfo() *master_pb.DataNodeInfo {
 	m := &master_pb.DataNodeInfo{
 		Id:                string(dn.Id()),
-		VolumeCount:       uint64(dn.GetVolumeCount()),
-		MaxVolumeCount:    uint64(dn.GetMaxVolumeCount()),
-		MaxSsdVolumeCount: uint64(dn.GetMaxSsdVolumeCount()),
-		SsdVolumeCount:    uint64(dn.GetSsdVolumeCount()),
-		FreeVolumeCount:   uint64(dn.FreeSpace()),
-		ActiveVolumeCount: uint64(dn.GetActiveVolumeCount()),
-		RemoteVolumeCount: uint64(dn.GetRemoteVolumeCount()),
 	}
-	for _, v := range dn.GetVolumes() {
-		m.VolumeInfos = append(m.VolumeInfos, v.ToVolumeInformationMessage())
-	}
-	for _, ecv := range dn.GetEcShards() {
-		m.EcShardInfos = append(m.EcShardInfos, ecv.ToVolumeEcShardInformationMessage())
+	for _, c := range dn.Children() {
+		disk := c.(*Disk)
+		m.DiskInfos[string(disk.Id())] = disk.ToDiskInfo()
 	}
 	return m
 }
@@ -226,11 +207,21 @@ func (dn *DataNode) ToDataNodeInfo() *master_pb.DataNodeInfo {
 func (dn *DataNode) GetVolumeIds() string {
 	dn.RLock()
 	defer dn.RUnlock()
-	ids := make([]int, 0, len(dn.volumes))
+	existingVolumes := dn.getVolumes()
+	ids := make([]int, 0, len(existingVolumes))
 
-	for k := range dn.volumes {
+	for k := range existingVolumes {
 		ids = append(ids, int(k))
 	}
 
 	return util.HumanReadableIntsMax(100, ids...)
 }
+
+func (dn *DataNode) getVolumes() []storage.VolumeInfo {
+	var existingVolumes []storage.VolumeInfo
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		existingVolumes = append(existingVolumes, disk.GetVolumes()...)
+	}
+	return existingVolumes
+}
\ No newline at end of file
diff --git a/weed/topology/data_node_ec.go b/weed/topology/data_node_ec.go
index 75c8784fe..be6df3b8a 100644
--- a/weed/topology/data_node_ec.go
+++ b/weed/topology/data_node_ec.go
@@ -3,12 +3,14 @@ package topology
 import (
 	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 )
 
 func (dn *DataNode) GetEcShards() (ret []*erasure_coding.EcVolumeInfo) {
 	dn.RLock()
-	for _, ecVolumeInfo := range dn.ecShards {
-		ret = append(ret, ecVolumeInfo)
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		ret = append(ret, disk.GetEcShards()...)
 	}
 	dn.RUnlock()
 	return ret
@@ -21,10 +23,17 @@ func (dn *DataNode) UpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo)
 		actualEcShardMap[ecShards.VolumeId] = ecShards
 	}
 
+	existingEcShards := dn.GetEcShards()
+
 	// found out the newShards and deletedShards
 	var newShardCount, deletedShardCount int
-	dn.ecShardsLock.RLock()
-	for vid, ecShards := range dn.ecShards {
+	for _, ecShards := range existingEcShards {
+
+		disk := dn.getOrCreateDisk(ecShards.DiskType)
+		deltaDiskUsages := newDiskUsages()
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(ecShards.DiskType))
+
+		vid := ecShards.VolumeId
 		if actualEcShards, ok := actualEcShardMap[vid]; !ok {
 			// dn registered ec shards not found in the new set of ec shards
 			deletedShards = append(deletedShards, ecShards)
@@ -42,26 +51,61 @@ func (dn *DataNode) UpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo)
 				deletedShardCount += d.ShardIdCount()
 			}
 		}
+
+		deltaDiskUsage.ecShardCount = int64(newShardCount - deletedShardCount)
+		disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
+
 	}
 	for _, ecShards := range actualShards {
-		if _, found := dn.ecShards[ecShards.VolumeId]; !found {
+
+		disk := dn.getOrCreateDisk(ecShards.DiskType)
+		deltaDiskUsages := newDiskUsages()
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(ecShards.DiskType))
+
+		if dn.hasEcShards(ecShards.VolumeId) {
 			newShards = append(newShards, ecShards)
 			newShardCount += ecShards.ShardIdCount()
 		}
+
+		deltaDiskUsage.ecShardCount = int64(newShardCount)
+		disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
+
 	}
-	dn.ecShardsLock.RUnlock()
 
 	if len(newShards) > 0 || len(deletedShards) > 0 {
 		// if changed, set to the new ec shard map
-		dn.ecShardsLock.Lock()
-		dn.ecShards = actualEcShardMap
-		dn.UpAdjustEcShardCountDelta(int64(newShardCount - deletedShardCount))
-		dn.ecShardsLock.Unlock()
+		dn.doUpdateEcShards(actualShards)
 	}
 
 	return
 }
 
+func (dn *DataNode) hasEcShards(volumeId needle.VolumeId) (found bool) {
+	dn.RLock()
+	defer dn.RUnlock()
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		_, found = disk.ecShards[volumeId]
+		if found {
+			return
+		}
+	}
+	return
+}
+
+func (dn *DataNode) doUpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo) {
+	dn.Lock()
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		disk.ecShards = make(map[needle.VolumeId]*erasure_coding.EcVolumeInfo)
+	}
+	for _, shard := range actualShards {
+		disk := dn.getOrCreateDisk(shard.DiskType)
+		disk.ecShards[shard.VolumeId] = shard
+	}
+	dn.Unlock()
+}
+
 func (dn *DataNode) DeltaUpdateEcShards(newShards, deletedShards []*erasure_coding.EcVolumeInfo) {
 
 	for _, newShard := range newShards {
@@ -75,61 +119,25 @@ func (dn *DataNode) DeltaUpdateEcShards(newShards, deletedShards []*erasure_codi
 }
 
 func (dn *DataNode) AddOrUpdateEcShard(s *erasure_coding.EcVolumeInfo) {
-	dn.ecShardsLock.Lock()
-	defer dn.ecShardsLock.Unlock()
-
-	delta := 0
-	if existing, ok := dn.ecShards[s.VolumeId]; !ok {
-		dn.ecShards[s.VolumeId] = s
-		delta = s.ShardBits.ShardIdCount()
-	} else {
-		oldCount := existing.ShardBits.ShardIdCount()
-		existing.ShardBits = existing.ShardBits.Plus(s.ShardBits)
-		delta = existing.ShardBits.ShardIdCount() - oldCount
-	}
-
-	dn.UpAdjustEcShardCountDelta(int64(delta))
-
+	disk := dn.getOrCreateDisk(s.DiskType)
+	disk.AddOrUpdateEcShard(s)
 }
 
 func (dn *DataNode) DeleteEcShard(s *erasure_coding.EcVolumeInfo) {
-	dn.ecShardsLock.Lock()
-	defer dn.ecShardsLock.Unlock()
+	disk := dn.getOrCreateDisk(s.DiskType)
+	disk.DeleteEcShard(s)
+}
 
-	if existing, ok := dn.ecShards[s.VolumeId]; ok {
-		oldCount := existing.ShardBits.ShardIdCount()
-		existing.ShardBits = existing.ShardBits.Minus(s.ShardBits)
-		delta := existing.ShardBits.ShardIdCount() - oldCount
-		dn.UpAdjustEcShardCountDelta(int64(delta))
-		if existing.ShardBits.ShardIdCount() == 0 {
-			delete(dn.ecShards, s.VolumeId)
+func (dn *DataNode) HasVolumesById(volumeId needle.VolumeId) (hasVolumeId bool) {
+
+	dn.RLock()
+	defer dn.RUnlock()
+	for _, c := range dn.children {
+		disk := c.(*Disk)
+		if disk.HasVolumesById(volumeId) {
+			return true
 		}
 	}
-
-}
-
-func (dn *DataNode) HasVolumesById(id needle.VolumeId) (hasVolumeId bool) {
-
-	// check whether normal volumes has this volume id
-	dn.RLock()
-	_, ok := dn.volumes[id]
-	if ok {
-		hasVolumeId = true
-	}
-	dn.RUnlock()
-
-	if hasVolumeId {
-		return
-	}
-
-	// check whether ec shards has this volume id
-	dn.ecShardsLock.RLock()
-	_, ok = dn.ecShards[id]
-	if ok {
-		hasVolumeId = true
-	}
-	dn.ecShardsLock.RUnlock()
-
-	return
+	return false
 
 }
diff --git a/weed/topology/disk.go b/weed/topology/disk.go
new file mode 100644
index 000000000..b13ff3fbf
--- /dev/null
+++ b/weed/topology/disk.go
@@ -0,0 +1,275 @@
+package topology
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"sync"
+
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+
+	"github.com/chrislusf/seaweedfs/weed/storage"
+)
+
+type Disk struct {
+	NodeImpl
+	volumes      map[needle.VolumeId]storage.VolumeInfo
+	ecShards     map[needle.VolumeId]*erasure_coding.EcVolumeInfo
+	ecShardsLock sync.RWMutex
+}
+
+func NewDisk(diskType string) *Disk {
+	s := &Disk{}
+	s.id = NodeId(diskType)
+	s.nodeType = "Disk"
+	s.diskUsages = newDiskUsages()
+	s.volumes = make(map[needle.VolumeId]storage.VolumeInfo, 2)
+	s.ecShards = make(map[needle.VolumeId]*erasure_coding.EcVolumeInfo, 2)
+	s.NodeImpl.value = s
+	return s
+}
+
+type DiskUsages struct {
+	sync.RWMutex
+	usages map[types.DiskType]*DiskUsageCounts
+}
+
+func newDiskUsages() *DiskUsages {
+	return &DiskUsages{
+		usages: make(map[types.DiskType]*DiskUsageCounts),
+	}
+}
+
+func (d *DiskUsages) negative() (*DiskUsages) {
+	d.RLock()
+	defer d.RUnlock()
+	t := newDiskUsages()
+	for diskType, b := range d.usages {
+		a := t.getOrCreateDisk(diskType)
+		a.volumeCount = - b.volumeCount
+		a.remoteVolumeCount = - b.remoteVolumeCount
+		a.activeVolumeCount = - b.activeVolumeCount
+		a.ecShardCount = - b.ecShardCount
+		a.maxVolumeCount = - b.maxVolumeCount
+
+	}
+	return t
+}
+
+func (d *DiskUsages) ToMap() interface{} {
+	d.RLock()
+	defer d.RUnlock()
+	ret := make(map[string]interface{})
+	for diskType, diskUsage := range d.usages {
+		ret[types.DiskType(diskType).String()] = diskUsage.ToMap()
+	}
+	return ret
+}
+
+func (d *DiskUsages) FreeSpace() (freeSpace int64) {
+	d.RLock()
+	defer d.RUnlock()
+	for _, diskUsage := range d.usages {
+		freeSpace += diskUsage.FreeSpace()
+	}
+	return
+}
+
+
+func (d *DiskUsages) GetMaxVolumeCount() (maxVolumeCount int64) {
+	d.RLock()
+	defer d.RUnlock()
+	for _, diskUsage := range d.usages {
+		maxVolumeCount += diskUsage.maxVolumeCount
+	}
+	return
+}
+
+type DiskUsageCounts struct {
+	volumeCount       int64
+	remoteVolumeCount int64
+	activeVolumeCount int64
+	ecShardCount      int64
+	maxVolumeCount    int64
+}
+
+func (a *DiskUsageCounts) addDiskUsageCounts(b *DiskUsageCounts) {
+	a.volumeCount += b.volumeCount
+	a.remoteVolumeCount += b.remoteVolumeCount
+	a.activeVolumeCount += b.activeVolumeCount
+	a.ecShardCount += b.ecShardCount
+	a.maxVolumeCount += b.maxVolumeCount
+}
+
+func (a *DiskUsageCounts) FreeSpace() int64 {
+	freeVolumeSlotCount := a.maxVolumeCount + a.remoteVolumeCount - a.volumeCount
+	if a.ecShardCount > 0 {
+		freeVolumeSlotCount = freeVolumeSlotCount - a.ecShardCount/erasure_coding.DataShardsCount - 1
+	}
+	return freeVolumeSlotCount
+}
+
+func (a *DiskUsageCounts) minus(b *DiskUsageCounts) (*DiskUsageCounts) {
+	return &DiskUsageCounts{
+		volumeCount: a.volumeCount - b.volumeCount,
+		remoteVolumeCount: a.remoteVolumeCount - b.remoteVolumeCount,
+		activeVolumeCount: a.activeVolumeCount - b.activeVolumeCount,
+		ecShardCount: a.ecShardCount - b.ecShardCount,
+		maxVolumeCount: a.maxVolumeCount - b.maxVolumeCount,
+	}
+}
+
+func (diskUsage *DiskUsageCounts) ToMap() interface{} {
+	ret := make(map[string]interface{})
+	ret["Volumes"] = diskUsage.volumeCount
+	ret["EcShards"] = diskUsage.ecShardCount
+	ret["Max"] = diskUsage.maxVolumeCount
+	ret["Free"] = diskUsage.FreeSpace()
+	return ret
+}
+
+func (du *DiskUsages) getOrCreateDisk(diskType types.DiskType) *DiskUsageCounts {
+	du.Lock()
+	defer du.Unlock()
+	t, found := du.usages[diskType]
+	if found {
+		return t
+	}
+	t = &DiskUsageCounts{}
+	du.usages[diskType] = t
+	return t
+}
+
+func (d *Disk) String() string {
+	d.RLock()
+	defer d.RUnlock()
+	return fmt.Sprintf("Disk:%s, volumes:%v, ecShards:%v, Port:%d, PublicUrl:%s", d.NodeImpl.String(), d.volumes, d.ecShards)
+}
+
+func (d *Disk) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
+	d.Lock()
+	defer d.Unlock()
+	return d.doAddOrUpdateVolume(v)
+}
+
+func (d *Disk) doAddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
+	deltaDiskUsages := newDiskUsages()
+	deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(v.DiskType))
+	if oldV, ok := d.volumes[v.Id]; !ok {
+		d.volumes[v.Id] = v
+		deltaDiskUsage.volumeCount = 1
+		if v.IsRemote() {
+			deltaDiskUsage.remoteVolumeCount = 1
+		}
+		if !v.ReadOnly {
+			deltaDiskUsage.activeVolumeCount = 1
+		}
+		d.UpAdjustMaxVolumeId(v.Id)
+		d.UpAdjustDiskUsageDelta(deltaDiskUsages)
+		isNew = true
+	} else {
+		if oldV.IsRemote() != v.IsRemote() {
+			if v.IsRemote() {
+				deltaDiskUsage.remoteVolumeCount = 1
+			}
+			if oldV.IsRemote() {
+				deltaDiskUsage.remoteVolumeCount = -1
+			}
+			d.UpAdjustDiskUsageDelta(deltaDiskUsages)
+		}
+		isChangedRO = d.volumes[v.Id].ReadOnly != v.ReadOnly
+		d.volumes[v.Id] = v
+	}
+	return
+}
+
+func (d *Disk) GetVolumes() (ret []storage.VolumeInfo) {
+	d.RLock()
+	for _, v := range d.volumes {
+		ret = append(ret, v)
+	}
+	d.RUnlock()
+	return ret
+}
+
+func (d *Disk) GetVolumesById(id needle.VolumeId) (storage.VolumeInfo, error) {
+	d.RLock()
+	defer d.RUnlock()
+	vInfo, ok := d.volumes[id]
+	if ok {
+		return vInfo, nil
+	} else {
+		return storage.VolumeInfo{}, fmt.Errorf("volumeInfo not found")
+	}
+}
+
+func (d *Disk) GetDataCenter() *DataCenter {
+	dn := d.Parent()
+	rack := dn.Parent()
+	dcNode := rack.Parent()
+	dcValue := dcNode.GetValue()
+	return dcValue.(*DataCenter)
+}
+
+func (d *Disk) GetRack() *Rack {
+	return d.Parent().Parent().(*NodeImpl).value.(*Rack)
+}
+
+func (d *Disk) GetTopology() *Topology {
+	p := d.Parent()
+	for p.Parent() != nil {
+		p = p.Parent()
+	}
+	t := p.(*Topology)
+	return t
+}
+
+func (d *Disk) ToMap() interface{} {
+	ret := make(map[string]interface{})
+	diskUsage := d.diskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	ret["Volumes"] = diskUsage.volumeCount
+	ret["VolumeIds"] = d.GetVolumeIds()
+	ret["EcShards"] = diskUsage.ecShardCount
+	ret["Max"] = diskUsage.maxVolumeCount
+	ret["Free"] = d.FreeSpace()
+	return ret
+}
+
+func (d *Disk) FreeSpace() int64 {
+	t := d.diskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	return t.FreeSpace()
+}
+
+func (d *Disk) ToDiskInfo() *master_pb.DiskInfo {
+	diskUsage := d.diskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	m := &master_pb.DiskInfo{
+		Type:              string(d.Id()),
+		VolumeCount:       uint64(diskUsage.volumeCount),
+		MaxVolumeCount:    uint64(diskUsage.maxVolumeCount),
+		FreeVolumeCount:   uint64(d.FreeSpace()),
+		ActiveVolumeCount: uint64(diskUsage.activeVolumeCount),
+		RemoteVolumeCount: uint64(diskUsage.remoteVolumeCount),
+	}
+	for _, v := range d.GetVolumes() {
+		m.VolumeInfos = append(m.VolumeInfos, v.ToVolumeInformationMessage())
+	}
+	for _, ecv := range d.GetEcShards() {
+		m.EcShardInfos = append(m.EcShardInfos, ecv.ToVolumeEcShardInformationMessage())
+	}
+	return m
+}
+
+// GetVolumeIds returns the human readable volume ids limited to count of max 100.
+func (d *Disk) GetVolumeIds() string {
+	d.RLock()
+	defer d.RUnlock()
+	ids := make([]int, 0, len(d.volumes))
+
+	for k := range d.volumes {
+		ids = append(ids, int(k))
+	}
+
+	return util.HumanReadableIntsMax(100, ids...)
+}
diff --git a/weed/topology/disk_ec.go b/weed/topology/disk_ec.go
new file mode 100644
index 000000000..f03f68411
--- /dev/null
+++ b/weed/topology/disk_ec.go
@@ -0,0 +1,84 @@
+package topology
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
+)
+
+func (d *Disk) GetEcShards() (ret []*erasure_coding.EcVolumeInfo) {
+	d.RLock()
+	for _, ecVolumeInfo := range d.ecShards {
+		ret = append(ret, ecVolumeInfo)
+	}
+	d.RUnlock()
+	return ret
+}
+
+func (d *Disk) AddOrUpdateEcShard(s *erasure_coding.EcVolumeInfo) {
+	d.ecShardsLock.Lock()
+	defer d.ecShardsLock.Unlock()
+
+	delta := 0
+	if existing, ok := d.ecShards[s.VolumeId]; !ok {
+		d.ecShards[s.VolumeId] = s
+		delta = s.ShardBits.ShardIdCount()
+	} else {
+		oldCount := existing.ShardBits.ShardIdCount()
+		existing.ShardBits = existing.ShardBits.Plus(s.ShardBits)
+		delta = existing.ShardBits.ShardIdCount() - oldCount
+	}
+
+	deltaDiskUsages := newDiskUsages()
+	deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	deltaDiskUsage.ecShardCount = int64(delta)
+	d.UpAdjustDiskUsageDelta(deltaDiskUsages)
+
+}
+
+func (d *Disk) DeleteEcShard(s *erasure_coding.EcVolumeInfo) {
+	d.ecShardsLock.Lock()
+	defer d.ecShardsLock.Unlock()
+
+	if existing, ok := d.ecShards[s.VolumeId]; ok {
+		oldCount := existing.ShardBits.ShardIdCount()
+		existing.ShardBits = existing.ShardBits.Minus(s.ShardBits)
+		delta := existing.ShardBits.ShardIdCount() - oldCount
+
+		deltaDiskUsages := newDiskUsages()
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+		deltaDiskUsage.ecShardCount = int64(delta)
+		d.UpAdjustDiskUsageDelta(deltaDiskUsages)
+
+		if existing.ShardBits.ShardIdCount() == 0 {
+			delete(d.ecShards, s.VolumeId)
+		}
+	}
+
+}
+
+func (d *Disk) HasVolumesById(id needle.VolumeId) (hasVolumeId bool) {
+
+	// check whether normal volumes has this volume id
+	d.RLock()
+	_, ok := d.volumes[id]
+	if ok {
+		hasVolumeId = true
+	}
+	d.RUnlock()
+
+	if hasVolumeId {
+		return
+	}
+
+	// check whether ec shards has this volume id
+	d.ecShardsLock.RLock()
+	_, ok = d.ecShards[id]
+	if ok {
+		hasVolumeId = true
+	}
+	d.ecShardsLock.RUnlock()
+
+	return
+
+}
diff --git a/weed/topology/node.go b/weed/topology/node.go
index b5c2680dd..5275af64a 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -2,40 +2,25 @@ package topology
 
 import (
 	"errors"
-	"github.com/chrislusf/seaweedfs/weed/storage"
-	"math/rand"
-	"strings"
-	"sync"
-	"sync/atomic"
-
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
+	"math/rand"
+	"strings"
+	"sync"
 )
 
 type NodeId string
 type Node interface {
 	Id() NodeId
 	String() string
-	FreeSpace() int64
 	AvailableSpaceFor(option *VolumeGrowOption) int64
 	ReserveOneVolume(r int64, option *VolumeGrowOption) (*DataNode, error)
-	UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta int64)
-	UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta int64)
-	UpAdjustVolumeCountDelta(volumeCountDelta int64)
-	UpAdjustSsdVolumeCountDelta(ssdVolumeCountDelta int64)
-	UpAdjustRemoteVolumeCountDelta(remoteVolumeCountDelta int64)
-	UpAdjustEcShardCountDelta(ecShardCountDelta int64)
-	UpAdjustActiveVolumeCountDelta(activeVolumeCountDelta int64)
+	UpAdjustDiskUsageDelta(deltaDiskUsages *DiskUsages)
 	UpAdjustMaxVolumeId(vid needle.VolumeId)
+	GetDiskUsages() *DiskUsages
 
-	GetVolumeCount() int64
-	GetSsdVolumeCount() int64
-	GetEcShardCount() int64
-	GetActiveVolumeCount() int64
-	GetRemoteVolumeCount() int64
-	GetMaxVolumeCount() int64
-	GetMaxSsdVolumeCount() int64
 	GetMaxVolumeId() needle.VolumeId
 	SetParent(Node)
 	LinkChildNode(node Node)
@@ -51,24 +36,22 @@ type Node interface {
 	GetValue() interface{} //get reference to the topology,dc,rack,datanode
 }
 type NodeImpl struct {
-	volumeCount       int64
-	remoteVolumeCount int64
-	ssdVolumeCount    int64
-	activeVolumeCount int64
-	ecShardCount      int64
-	maxVolumeCount    int64
-	maxSsdVolumeCount int64
-	id                NodeId
-	parent            Node
-	sync.RWMutex      // lock children
-	children          map[NodeId]Node
-	maxVolumeId       needle.VolumeId
+	diskUsages   *DiskUsages
+	id           NodeId
+	parent       Node
+	sync.RWMutex     // lock children
+	children     map[NodeId]Node
+	maxVolumeId  needle.VolumeId
 
 	//for rack, data center, topology
 	nodeType string
 	value    interface{}
 }
 
+func (n *NodeImpl) GetDiskUsages() *DiskUsages {
+	return n.diskUsages
+}
+
 // the first node must satisfy filterFirstNodeFn(), the rest nodes must have one free slot
 func (n *NodeImpl) PickNodesByWeight(numberOfNodes int, option *VolumeGrowOption, filterFirstNodeFn func(dn Node) error) (firstNode Node, restNodes []Node, err error) {
 	var totalWeights int64
@@ -150,20 +133,14 @@ func (n *NodeImpl) String() string {
 func (n *NodeImpl) Id() NodeId {
 	return n.id
 }
-func (n *NodeImpl) AvailableSpaceFor(option *VolumeGrowOption) int64 {
-	freeVolumeSlotCount := n.maxVolumeCount + n.remoteVolumeCount - n.volumeCount
-	if option.DiskType == storage.SsdType {
-		freeVolumeSlotCount = n.maxSsdVolumeCount - n.ssdVolumeCount
-	}
-	if n.ecShardCount > 0 {
-		freeVolumeSlotCount = freeVolumeSlotCount - n.ecShardCount/erasure_coding.DataShardsCount - 1
-	}
-	return freeVolumeSlotCount
+func (n *NodeImpl) getOrCreateDisk(diskType types.DiskType) *DiskUsageCounts {
+	return n.diskUsages.getOrCreateDisk(diskType)
 }
-func (n *NodeImpl) FreeSpace() int64 {
-	freeVolumeSlotCount := n.maxVolumeCount + n.maxSsdVolumeCount + n.remoteVolumeCount - n.volumeCount - n.ssdVolumeCount
-	if n.ecShardCount > 0 {
-		freeVolumeSlotCount = freeVolumeSlotCount - n.ecShardCount/erasure_coding.DataShardsCount - 1
+func (n *NodeImpl) AvailableSpaceFor(option *VolumeGrowOption) int64 {
+	t := n.getOrCreateDisk(option.DiskType)
+	freeVolumeSlotCount := t.maxVolumeCount + t.remoteVolumeCount - t.volumeCount
+	if t.ecShardCount > 0 {
+		freeVolumeSlotCount = freeVolumeSlotCount - t.ecShardCount/erasure_coding.DataShardsCount - 1
 	}
 	return freeVolumeSlotCount
 }
@@ -209,67 +186,29 @@ func (n *NodeImpl) ReserveOneVolume(r int64, option *VolumeGrowOption) (assigned
 	return nil, errors.New("No free volume slot found!")
 }
 
-func (n *NodeImpl) UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta int64) { //can be negative
-	if maxVolumeCountDelta == 0 {
-		return
-	}
-	atomic.AddInt64(&n.maxVolumeCount, maxVolumeCountDelta)
-	if n.parent != nil {
-		n.parent.UpAdjustMaxVolumeCountDelta(maxVolumeCountDelta)
+func (n *NodeImpl) AdjustMaxVolumeCounts(maxVolumeCounts map[string]uint32) {
+	deltaDiskUsages := newDiskUsages()
+	for diskType, maxVolumeCount := range maxVolumeCounts {
+		if maxVolumeCount == 0 {
+			// the volume server may have set the max to zero
+			continue
+		}
+		dt := types.DiskType(diskType)
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(dt)
+		currentDiskUsage := n.diskUsages.getOrCreateDisk(dt)
+		deltaDiskUsage.maxVolumeCount = int64(maxVolumeCount) - currentDiskUsage.maxVolumeCount
+		deltaDiskUsages.getOrCreateDisk(dt).maxVolumeCount = int64(maxVolumeCount)
 	}
+	n.UpAdjustDiskUsageDelta(deltaDiskUsages)
 }
-func (n *NodeImpl) UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta int64) { //can be negative
-	if maxSsdVolumeCountDelta == 0 {
-		return
+
+func (n *NodeImpl) UpAdjustDiskUsageDelta(deltaDiskUsages *DiskUsages) { //can be negative
+	for diskType, diskUsage := range deltaDiskUsages.usages {
+		existingDisk := n.getOrCreateDisk(diskType)
+		existingDisk.addDiskUsageCounts(diskUsage)
 	}
-	atomic.AddInt64(&n.maxSsdVolumeCount, maxSsdVolumeCountDelta)
 	if n.parent != nil {
-		n.parent.UpAdjustMaxSsdVolumeCountDelta(maxSsdVolumeCountDelta)
-	}
-}
-func (n *NodeImpl) UpAdjustVolumeCountDelta(volumeCountDelta int64) { //can be negative
-	if volumeCountDelta == 0 {
-		return
-	}
-	atomic.AddInt64(&n.volumeCount, volumeCountDelta)
-	if n.parent != nil {
-		n.parent.UpAdjustVolumeCountDelta(volumeCountDelta)
-	}
-}
-func (n *NodeImpl) UpAdjustRemoteVolumeCountDelta(remoteVolumeCountDelta int64) { //can be negative
-	if remoteVolumeCountDelta == 0 {
-		return
-	}
-	atomic.AddInt64(&n.remoteVolumeCount, remoteVolumeCountDelta)
-	if n.parent != nil {
-		n.parent.UpAdjustRemoteVolumeCountDelta(remoteVolumeCountDelta)
-	}
-}
-func (n *NodeImpl) UpAdjustSsdVolumeCountDelta(ssdVolumeCountDelta int64) { //can be negative
-	if ssdVolumeCountDelta == 0 {
-		return
-	}
-	atomic.AddInt64(&n.ssdVolumeCount, ssdVolumeCountDelta)
-	if n.parent != nil {
-		n.parent.UpAdjustSsdVolumeCountDelta(ssdVolumeCountDelta)
-	}
-}
-func (n *NodeImpl) UpAdjustEcShardCountDelta(ecShardCountDelta int64) { //can be negative
-	if ecShardCountDelta == 0 {
-		return
-	}
-	atomic.AddInt64(&n.ecShardCount, ecShardCountDelta)
-	if n.parent != nil {
-		n.parent.UpAdjustEcShardCountDelta(ecShardCountDelta)
-	}
-}
-func (n *NodeImpl) UpAdjustActiveVolumeCountDelta(activeVolumeCountDelta int64) { //can be negative
-	if activeVolumeCountDelta == 0 {
-		return
-	}
-	atomic.AddInt64(&n.activeVolumeCount, activeVolumeCountDelta)
-	if n.parent != nil {
-		n.parent.UpAdjustActiveVolumeCountDelta(activeVolumeCountDelta)
+		n.parent.UpAdjustDiskUsageDelta(deltaDiskUsages)
 	}
 }
 func (n *NodeImpl) UpAdjustMaxVolumeId(vid needle.VolumeId) { //can be negative
@@ -283,41 +222,14 @@ func (n *NodeImpl) UpAdjustMaxVolumeId(vid needle.VolumeId) { //can be negative
 func (n *NodeImpl) GetMaxVolumeId() needle.VolumeId {
 	return n.maxVolumeId
 }
-func (n *NodeImpl) GetVolumeCount() int64 {
-	return n.volumeCount
-}
-func (n *NodeImpl) GetSsdVolumeCount() int64 {
-	return n.ssdVolumeCount
-}
-func (n *NodeImpl) GetEcShardCount() int64 {
-	return n.ecShardCount
-}
-func (n *NodeImpl) GetRemoteVolumeCount() int64 {
-	return n.remoteVolumeCount
-}
-func (n *NodeImpl) GetActiveVolumeCount() int64 {
-	return n.activeVolumeCount
-}
-func (n *NodeImpl) GetMaxVolumeCount() int64 {
-	return n.maxVolumeCount
-}
-func (n *NodeImpl) GetMaxSsdVolumeCount() int64 {
-	return n.maxSsdVolumeCount
-}
 
 func (n *NodeImpl) LinkChildNode(node Node) {
 	n.Lock()
 	defer n.Unlock()
 	if n.children[node.Id()] == nil {
 		n.children[node.Id()] = node
-		n.UpAdjustMaxVolumeCountDelta(node.GetMaxVolumeCount())
-		n.UpAdjustMaxSsdVolumeCountDelta(node.GetMaxSsdVolumeCount())
+		n.UpAdjustDiskUsageDelta(node.GetDiskUsages())
 		n.UpAdjustMaxVolumeId(node.GetMaxVolumeId())
-		n.UpAdjustVolumeCountDelta(node.GetVolumeCount())
-		n.UpAdjustSsdVolumeCountDelta(node.GetSsdVolumeCount())
-		n.UpAdjustRemoteVolumeCountDelta(node.GetRemoteVolumeCount())
-		n.UpAdjustEcShardCountDelta(node.GetEcShardCount())
-		n.UpAdjustActiveVolumeCountDelta(node.GetActiveVolumeCount())
 		node.SetParent(n)
 		glog.V(0).Infoln(n, "adds child", node.Id())
 	}
@@ -330,13 +242,7 @@ func (n *NodeImpl) UnlinkChildNode(nodeId NodeId) {
 	if node != nil {
 		node.SetParent(nil)
 		delete(n.children, node.Id())
-		n.UpAdjustVolumeCountDelta(-node.GetVolumeCount())
-		n.UpAdjustSsdVolumeCountDelta(-node.GetSsdVolumeCount())
-		n.UpAdjustRemoteVolumeCountDelta(-node.GetRemoteVolumeCount())
-		n.UpAdjustEcShardCountDelta(-node.GetEcShardCount())
-		n.UpAdjustActiveVolumeCountDelta(-node.GetActiveVolumeCount())
-		n.UpAdjustMaxVolumeCountDelta(-node.GetMaxVolumeCount())
-		n.UpAdjustMaxSsdVolumeCountDelta(-node.GetMaxSsdVolumeCount())
+		n.UpAdjustDiskUsageDelta(node.GetDiskUsages().negative())
 		glog.V(0).Infoln(n, "removes", node.Id())
 	}
 }
diff --git a/weed/topology/rack.go b/weed/topology/rack.go
index 35563abe5..e75318ffe 100644
--- a/weed/topology/rack.go
+++ b/weed/topology/rack.go
@@ -2,6 +2,7 @@ package topology
 
 import (
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"strconv"
 	"time"
 )
@@ -14,6 +15,7 @@ func NewRack(id string) *Rack {
 	r := &Rack{}
 	r.id = NodeId(id)
 	r.nodeType = "Rack"
+	r.diskUsages = newDiskUsages()
 	r.children = make(map[NodeId]Node)
 	r.NodeImpl.value = r
 	return r
@@ -28,7 +30,7 @@ func (r *Rack) FindDataNode(ip string, port int) *DataNode {
 	}
 	return nil
 }
-func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVolumeCount int64, maxSsdVolumeCount int64) *DataNode {
+func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVolumeCounts map[string]uint32) *DataNode {
 	for _, c := range r.Children() {
 		dn := c.(*DataNode)
 		if dn.MatchLocation(ip, port) {
@@ -40,19 +42,19 @@ func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVol
 	dn.Ip = ip
 	dn.Port = port
 	dn.PublicUrl = publicUrl
-	dn.maxVolumeCount = maxVolumeCount
-	dn.maxSsdVolumeCount = maxSsdVolumeCount
 	dn.LastSeen = time.Now().Unix()
 	r.LinkChildNode(dn)
+	for diskType, maxVolumeCount := range maxVolumeCounts {
+		disk := NewDisk(diskType)
+		disk.diskUsages.getOrCreateDisk(types.DiskType(diskType)).maxVolumeCount = int64(maxVolumeCount)
+		dn.LinkChildNode(disk)
+	}
 	return dn
 }
 
 func (r *Rack) ToMap() interface{} {
 	m := make(map[string]interface{})
 	m["Id"] = r.Id()
-	m["Max"] = r.GetMaxVolumeCount()
-	m["MaxSsd"] = r.GetMaxSsdVolumeCount()
-	m["Free"] = r.FreeSpace()
 	var dns []interface{}
 	for _, c := range r.Children() {
 		dn := c.(*DataNode)
@@ -65,13 +67,6 @@ func (r *Rack) ToMap() interface{} {
 func (r *Rack) ToRackInfo() *master_pb.RackInfo {
 	m := &master_pb.RackInfo{
 		Id:                string(r.Id()),
-		VolumeCount:       uint64(r.GetVolumeCount()),
-		MaxVolumeCount:    uint64(r.GetMaxVolumeCount()),
-		MaxSsdVolumeCount: uint64(r.GetMaxSsdVolumeCount()),
-		SsdVolumeCount:    uint64(r.GetSsdVolumeCount()),
-		FreeVolumeCount:   uint64(r.FreeSpace()),
-		ActiveVolumeCount: uint64(r.GetActiveVolumeCount()),
-		RemoteVolumeCount: uint64(r.GetRemoteVolumeCount()),
 	}
 	for _, c := range r.Children() {
 		dn := c.(*DataNode)
diff --git a/weed/topology/topology.go b/weed/topology/topology.go
index 220be4e88..08ebd24fd 100644
--- a/weed/topology/topology.go
+++ b/weed/topology/topology.go
@@ -3,6 +3,7 @@ package topology
 import (
 	"errors"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"math/rand"
 	"sync"
 	"time"
@@ -45,6 +46,7 @@ func NewTopology(id string, seq sequence.Sequencer, volumeSizeLimit uint64, puls
 	t.id = NodeId(id)
 	t.nodeType = "Topology"
 	t.NodeImpl.value = t
+	t.diskUsages = newDiskUsages()
 	t.children = make(map[NodeId]Node)
 	t.collectionMap = util.NewConcurrentReadMap()
 	t.ecShardMap = make(map[needle.VolumeId]*EcShardLocations)
@@ -137,7 +139,7 @@ func (t *Topology) PickForWrite(count uint64, option *VolumeGrowOption) (string,
 	return needle.NewFileId(*vid, fileId, rand.Uint32()).String(), count, datanodes.Head(), nil
 }
 
-func (t *Topology) GetVolumeLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) *VolumeLayout {
+func (t *Topology) GetVolumeLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType types.DiskType) *VolumeLayout {
 	return t.collectionMap.Get(collectionName, func() interface{} {
 		return NewCollection(collectionName, t.volumeSizeLimit, t.replicationAsMin)
 	}).(*Collection).GetOrCreateVolumeLayout(rp, ttl, diskType)
@@ -176,7 +178,7 @@ func (t *Topology) DeleteCollection(collectionName string) {
 	t.collectionMap.Delete(collectionName)
 }
 
-func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType) {
+func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType types.DiskType) {
 	collection, found := t.FindCollection(collectionName)
 	if !found {
 		return
@@ -188,14 +190,14 @@ func (t *Topology) DeleteLayout(collectionName string, rp *super_block.ReplicaPl
 }
 
 func (t *Topology) RegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
-	diskType := storage.ToDiskType(v.DiskType)
+	diskType := types.ToDiskType(v.DiskType)
 	vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	vl.RegisterVolume(&v, dn)
 	vl.EnsureCorrectWritables(&v)
 }
 func (t *Topology) UnRegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
 	glog.Infof("removing volume info: %+v", v)
-	diskType := storage.ToDiskType(v.DiskType)
+	diskType := types.ToDiskType(v.DiskType)
 	volumeLayout := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 	volumeLayout.UnRegisterVolume(&v, dn)
 	if volumeLayout.isEmpty() {
@@ -235,7 +237,7 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 		t.UnRegisterVolumeLayout(v, dn)
 	}
 	for _, v := range changedVolumes {
-		diskType := storage.ToDiskType(v.DiskType)
+		diskType := types.ToDiskType(v.DiskType)
 		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 		vl.EnsureCorrectWritables(&v)
 	}
diff --git a/weed/topology/topology_ec.go b/weed/topology/topology_ec.go
index 93b39bb5d..022eeb578 100644
--- a/weed/topology/topology_ec.go
+++ b/weed/topology/topology_ec.go
@@ -18,6 +18,7 @@ func (t *Topology) SyncDataNodeEcShards(shardInfos []*master_pb.VolumeEcShardInf
 	for _, shardInfo := range shardInfos {
 		shards = append(shards,
 			erasure_coding.NewEcVolumeInfo(
+				shardInfo.DiskType,
 				shardInfo.Collection,
 				needle.VolumeId(shardInfo.Id),
 				erasure_coding.ShardBits(shardInfo.EcIndexBits)))
@@ -39,6 +40,7 @@ func (t *Topology) IncrementalSyncDataNodeEcShards(newEcShards, deletedEcShards
 	for _, shardInfo := range newEcShards {
 		newShards = append(newShards,
 			erasure_coding.NewEcVolumeInfo(
+				shardInfo.DiskType,
 				shardInfo.Collection,
 				needle.VolumeId(shardInfo.Id),
 				erasure_coding.ShardBits(shardInfo.EcIndexBits)))
@@ -46,6 +48,7 @@ func (t *Topology) IncrementalSyncDataNodeEcShards(newEcShards, deletedEcShards
 	for _, shardInfo := range deletedEcShards {
 		deletedShards = append(deletedShards,
 			erasure_coding.NewEcVolumeInfo(
+				shardInfo.DiskType,
 				shardInfo.Collection,
 				needle.VolumeId(shardInfo.Id),
 				erasure_coding.ShardBits(shardInfo.EcIndexBits)))
diff --git a/weed/topology/topology_event_handling.go b/weed/topology/topology_event_handling.go
index d4076af5d..1b1d0fe86 100644
--- a/weed/topology/topology_event_handling.go
+++ b/weed/topology/topology_event_handling.go
@@ -1,6 +1,7 @@
 package topology
 
 import (
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"google.golang.org/grpc"
 	"math/rand"
 	"time"
@@ -37,7 +38,7 @@ func (t *Topology) StartRefreshWritableVolumes(grpcDialOption grpc.DialOption, g
 	}()
 }
 func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
-	diskType := storage.ToDiskType(volumeInfo.DiskType)
+	diskType := types.ToDiskType(volumeInfo.DiskType)
 	vl := t.GetVolumeLayout(volumeInfo.Collection, volumeInfo.ReplicaPlacement, volumeInfo.Ttl, diskType)
 	if !vl.SetVolumeCapacityFull(volumeInfo.Id) {
 		return false
@@ -48,7 +49,13 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 
 	for _, dn := range vl.vid2location[volumeInfo.Id].list {
 		if !volumeInfo.ReadOnly {
-			dn.UpAdjustActiveVolumeCountDelta(-1)
+
+			disk := dn.getOrCreateDisk(volumeInfo.DiskType)
+			deltaDiskUsages := newDiskUsages()
+			deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(volumeInfo.DiskType))
+			deltaDiskUsage.activeVolumeCount = -1
+			disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
+
 		}
 	}
 	return true
@@ -56,16 +63,14 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 func (t *Topology) UnRegisterDataNode(dn *DataNode) {
 	for _, v := range dn.GetVolumes() {
 		glog.V(0).Infoln("Removing Volume", v.Id, "from the dead volume server", dn.Id())
-		diskType := storage.ToDiskType(v.DiskType)
+		diskType := types.ToDiskType(v.DiskType)
 		vl := t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl, diskType)
 		vl.SetVolumeUnavailable(dn, v.Id)
 	}
-	dn.UpAdjustVolumeCountDelta(-dn.GetVolumeCount())
-	dn.UpAdjustSsdVolumeCountDelta(-dn.GetSsdVolumeCount())
-	dn.UpAdjustRemoteVolumeCountDelta(-dn.GetRemoteVolumeCount())
-	dn.UpAdjustActiveVolumeCountDelta(-dn.GetActiveVolumeCount())
-	dn.UpAdjustMaxVolumeCountDelta(-dn.GetMaxVolumeCount())
-	dn.UpAdjustMaxSsdVolumeCountDelta(-dn.GetMaxSsdVolumeCount())
+
+	negativeUsages := dn.GetDiskUsages().negative()
+	dn.UpAdjustDiskUsageDelta(negativeUsages)
+
 	if dn.Parent() != nil {
 		dn.Parent().UnlinkChildNode(dn.Id())
 	}
diff --git a/weed/topology/topology_map.go b/weed/topology/topology_map.go
index 566fa418f..aa2c9afcd 100644
--- a/weed/topology/topology_map.go
+++ b/weed/topology/topology_map.go
@@ -4,8 +4,8 @@ import "github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 
 func (t *Topology) ToMap() interface{} {
 	m := make(map[string]interface{})
-	m["Max"] = t.GetMaxVolumeCount() + t.GetMaxSsdVolumeCount()
-	m["Free"] = t.FreeSpace()
+	m["Max"] = t.diskUsages.GetMaxVolumeCount()
+	m["Free"] = t.diskUsages.FreeSpace()
 	var dcs []interface{}
 	for _, c := range t.Children() {
 		dc := c.(*DataCenter)
@@ -29,8 +29,8 @@ func (t *Topology) ToMap() interface{} {
 
 func (t *Topology) ToVolumeMap() interface{} {
 	m := make(map[string]interface{})
-	m["Max"] = t.GetMaxVolumeCount() + t.GetMaxSsdVolumeCount()
-	m["Free"] = t.FreeSpace()
+	m["Max"] = t.diskUsages.GetMaxVolumeCount()
+	m["Free"] = t.diskUsages.FreeSpace()
 	dcs := make(map[NodeId]interface{})
 	for _, c := range t.Children() {
 		dc := c.(*DataCenter)
@@ -81,13 +81,6 @@ func (t *Topology) ToVolumeLocations() (volumeLocations []*master_pb.VolumeLocat
 func (t *Topology) ToTopologyInfo() *master_pb.TopologyInfo {
 	m := &master_pb.TopologyInfo{
 		Id:                string(t.Id()),
-		VolumeCount:       uint64(t.GetVolumeCount()),
-		MaxVolumeCount:    uint64(t.GetMaxVolumeCount()),
-		MaxSsdVolumeCount: uint64(t.GetMaxSsdVolumeCount()),
-		FreeVolumeCount:   uint64(t.FreeSpace()),
-		ActiveVolumeCount: uint64(t.GetActiveVolumeCount()),
-		RemoteVolumeCount: uint64(t.GetRemoteVolumeCount()),
-		SsdVolumeCount:    uint64(t.GetSsdVolumeCount()),
 	}
 	for _, c := range t.Children() {
 		dc := c.(*DataCenter)
diff --git a/weed/topology/topology_test.go b/weed/topology/topology_test.go
index b7088947c..1d9379210 100644
--- a/weed/topology/topology_test.go
+++ b/weed/topology/topology_test.go
@@ -6,6 +6,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 
 	"testing"
 )
@@ -114,7 +115,7 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 			nil,
 			dn)
 		rp, _ := super_block.NewReplicaPlacementFromString("000")
-		layout := topo.GetVolumeLayout("", rp, needle.EMPTY_TTL, storage.HardDriveType)
+		layout := topo.GetVolumeLayout("", rp, needle.EMPTY_TTL, types.HardDriveType)
 		assert(t, "writables after repeated add", len(layout.writables), volumeCount)
 
 		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount)
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index 1ceca06a5..4b0a4837e 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -2,6 +2,7 @@ package topology
 
 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"math/rand"
 	"sync"
 
@@ -27,7 +28,7 @@ type VolumeGrowOption struct {
 	Collection         string
 	ReplicaPlacement   *super_block.ReplicaPlacement
 	Ttl                *needle.TTL
-	DiskType           storage.DiskType
+	DiskType           types.DiskType
 	Prealloacte        int64
 	DataCenter         string
 	Rack               string
@@ -219,6 +220,7 @@ func (vg *VolumeGrowth) grow(grpcDialOption grpc.DialOption, topo *Topology, vid
 				ReplicaPlacement: option.ReplicaPlacement,
 				Ttl:              option.Ttl,
 				Version:          needle.CurrentVersion,
+				DiskType:         string(option.DiskType),
 			}
 			server.AddOrUpdateVolume(vi)
 			topo.RegisterVolumeLayout(vi, server)
diff --git a/weed/topology/volume_layout.go b/weed/topology/volume_layout.go
index e21922310..5784c894b 100644
--- a/weed/topology/volume_layout.go
+++ b/weed/topology/volume_layout.go
@@ -3,6 +3,7 @@ package topology
 import (
 	"errors"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"math/rand"
 	"sync"
 	"time"
@@ -103,7 +104,7 @@ func (v *volumesBinaryState) copyState(list *VolumeLocationList) copyState {
 type VolumeLayout struct {
 	rp               *super_block.ReplicaPlacement
 	ttl              *needle.TTL
-	diskType         storage.DiskType
+	diskType         types.DiskType
 	vid2location     map[needle.VolumeId]*VolumeLocationList
 	writables        []needle.VolumeId   // transient array of writable volume id
 	readonlyVolumes  *volumesBinaryState // readonly volumes
@@ -119,7 +120,7 @@ type VolumeLayoutStats struct {
 	FileCount uint64
 }
 
-func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType storage.DiskType, volumeSizeLimit uint64, replicationAsMin bool) *VolumeLayout {
+func NewVolumeLayout(rp *super_block.ReplicaPlacement, ttl *needle.TTL, diskType types.DiskType, volumeSizeLimit uint64, replicationAsMin bool) *VolumeLayout {
 	return &VolumeLayout{
 		rp:               rp,
 		ttl:              ttl,

From 3fe628f04e2aa3ac550c670c27d00fcc3fc2e12b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 03:03:00 -0800
Subject: [PATCH 068/140] use hdd instead of empty string

---
 weed/server/master_grpc_server_volume.go     |  2 +-
 weed/server/volume_grpc_admin.go             |  2 +-
 weed/server/volume_grpc_copy.go              |  2 +-
 weed/shell/command_volume_list.go            |  4 ++--
 weed/shell/command_volume_server_evacuate.go |  2 +-
 weed/shell/command_volume_tier_move.go       |  2 +-
 weed/storage/types/volume_disk_type.go       |  2 +-
 weed/topology/data_node.go                   | 17 +++++++++--------
 weed/topology/data_node_ec.go                |  4 ++--
 weed/topology/disk.go                        | 10 +++++-----
 weed/topology/disk_ec.go                     |  4 ++--
 weed/topology/node.go                        |  2 +-
 weed/topology/rack.go                        |  2 +-
 weed/topology/topology_event_handling.go     |  2 +-
 14 files changed, 29 insertions(+), 28 deletions(-)

diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index d71e04c70..1699eaa36 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -120,7 +120,7 @@ func (ms *MasterServer) Statistics(ctx context.Context, req *master_pb.Statistic
 		return nil, err
 	}
 
-	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, types.DiskType(req.DiskType))
+	volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, types.ToDiskType(req.DiskType))
 	stats := volumeLayout.Stats()
 
 	totalSize := ms.Topo.GetDiskUsages().GetMaxVolumeCount() * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
diff --git a/weed/server/volume_grpc_admin.go b/weed/server/volume_grpc_admin.go
index 3b83853b9..2bc108a23 100644
--- a/weed/server/volume_grpc_admin.go
+++ b/weed/server/volume_grpc_admin.go
@@ -41,7 +41,7 @@ func (vs *VolumeServer) AllocateVolume(ctx context.Context, req *volume_server_p
 		req.Ttl,
 		req.Preallocate,
 		req.MemoryMapMaxSizeMb,
-		types.DiskType(req.DiskType),
+		types.ToDiskType(req.DiskType),
 	)
 
 	if err != nil {
diff --git a/weed/server/volume_grpc_copy.go b/weed/server/volume_grpc_copy.go
index 8cdb9ec27..3b6524df8 100644
--- a/weed/server/volume_grpc_copy.go
+++ b/weed/server/volume_grpc_copy.go
@@ -59,7 +59,7 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
 		if req.DiskType != "" {
 			diskType = req.DiskType
 		}
-		location := vs.store.FindFreeLocation(types.DiskType(diskType))
+		location := vs.store.FindFreeLocation(types.ToDiskType(diskType))
 		if location == nil {
 			return fmt.Errorf("no space left")
 		}
diff --git a/weed/shell/command_volume_list.go b/weed/shell/command_volume_list.go
index a2ee7efd1..140998338 100644
--- a/weed/shell/command_volume_list.go
+++ b/weed/shell/command_volume_list.go
@@ -115,14 +115,14 @@ func writeDiskInfo(writer io.Writer, t *master_pb.DiskInfo) statistics {
 		s = s.plus(writeVolumeInformationMessage(writer, vi))
 	}
 	for _, ecShardInfo := range t.EcShardInfos {
-		fmt.Fprintf(writer, "        ec volume id:%v collection:%v shards:%v\n", ecShardInfo.Id, ecShardInfo.Collection, erasure_coding.ShardBits(ecShardInfo.EcIndexBits).ShardIds())
+		fmt.Fprintf(writer, "          ec volume id:%v collection:%v shards:%v\n", ecShardInfo.Id, ecShardInfo.Collection, erasure_coding.ShardBits(ecShardInfo.EcIndexBits).ShardIds())
 	}
 	fmt.Fprintf(writer, "        Disk %s %+v \n", t.Type, s)
 	return s
 }
 
 func writeVolumeInformationMessage(writer io.Writer, t *master_pb.VolumeInformationMessage) statistics {
-	fmt.Fprintf(writer, "        volume %+v \n", t)
+	fmt.Fprintf(writer, "          volume %+v \n", t)
 	return newStatistics(t)
 }
 
diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index b7e06c891..65bf578a0 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -180,7 +180,7 @@ func moveAwayOneEcVolume(commandEnv *CommandEnv, ecShardInfo *master_pb.VolumeEc
 
 func moveAwayOneNormalVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, vol *master_pb.VolumeInformationMessage, thisNode *Node, otherNodes []*Node, applyChange bool) (hasMoved bool, err error) {
 	sort.Slice(otherNodes, func(i, j int) bool {
-		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount(types.DiskType(vol.DiskType))) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount(types.DiskType(vol.DiskType)))
+		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount(types.ToDiskType(vol.DiskType))) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount(types.ToDiskType(vol.DiskType)))
 	})
 
 	for i := 0; i < len(otherNodes); i++ {
diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
index dfa82490d..3c6c31eac 100644
--- a/weed/shell/command_volume_tier_move.go
+++ b/weed/shell/command_volume_tier_move.go
@@ -91,7 +91,7 @@ func collectVolumeIdsForTierChange(commandEnv *CommandEnv, sourceTier string, se
 	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		for _, diskInfo := range dn.DiskInfos {
 			for _, v := range diskInfo.VolumeInfos {
-				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds && types.DiskType(v.DiskType) == types.ToDiskType(sourceTier) {
+				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds && types.ToDiskType(v.DiskType) == types.ToDiskType(sourceTier) {
 					if float64(v.Size) > fullPercentage/100*float64(resp.VolumeSizeLimitMb)*1024*1024 {
 						vidMap[v.Id] = true
 					}
diff --git a/weed/storage/types/volume_disk_type.go b/weed/storage/types/volume_disk_type.go
index 459f8b6b7..d49891a63 100644
--- a/weed/storage/types/volume_disk_type.go
+++ b/weed/storage/types/volume_disk_type.go
@@ -7,7 +7,7 @@ import (
 type DiskType string
 
 const (
-	HardDriveType DiskType = ""
+	HardDriveType DiskType = "hdd"
 	SsdType                = "ssd"
 )
 
diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 5b625de80..038d87043 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -14,10 +14,10 @@ import (
 
 type DataNode struct {
 	NodeImpl
-	Ip           string
-	Port         int
-	PublicUrl    string
-	LastSeen     int64 // unix time in seconds
+	Ip        string
+	Port      int
+	PublicUrl string
+	LastSeen  int64 // unix time in seconds
 }
 
 func NewDataNode(id string) *DataNode {
@@ -80,7 +80,7 @@ func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolume
 			deletedVolumes = append(deletedVolumes, v)
 
 			deltaDiskUsages := newDiskUsages()
-			deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(v.DiskType))
+			deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(v.DiskType))
 			deltaDiskUsage.volumeCount = -1
 			if v.IsRemote() {
 				deltaDiskUsage.remoteVolumeCount = -1
@@ -112,7 +112,7 @@ func (dn *DataNode) DeltaUpdateVolumes(newVolumes, deletedVolumes []storage.Volu
 		delete(disk.volumes, v.Id)
 
 		deltaDiskUsages := newDiskUsages()
-		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(v.DiskType))
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(v.DiskType))
 		deltaDiskUsage.volumeCount = -1
 		if v.IsRemote() {
 			deltaDiskUsage.remoteVolumeCount = -1
@@ -194,7 +194,8 @@ func (dn *DataNode) ToMap() interface{} {
 
 func (dn *DataNode) ToDataNodeInfo() *master_pb.DataNodeInfo {
 	m := &master_pb.DataNodeInfo{
-		Id:                string(dn.Id()),
+		Id:        string(dn.Id()),
+		DiskInfos: make(map[string]*master_pb.DiskInfo),
 	}
 	for _, c := range dn.Children() {
 		disk := c.(*Disk)
@@ -224,4 +225,4 @@ func (dn *DataNode) getVolumes() []storage.VolumeInfo {
 		existingVolumes = append(existingVolumes, disk.GetVolumes()...)
 	}
 	return existingVolumes
-}
\ No newline at end of file
+}
diff --git a/weed/topology/data_node_ec.go b/weed/topology/data_node_ec.go
index be6df3b8a..cd4c5cd8b 100644
--- a/weed/topology/data_node_ec.go
+++ b/weed/topology/data_node_ec.go
@@ -31,7 +31,7 @@ func (dn *DataNode) UpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo)
 
 		disk := dn.getOrCreateDisk(ecShards.DiskType)
 		deltaDiskUsages := newDiskUsages()
-		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(ecShards.DiskType))
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(ecShards.DiskType))
 
 		vid := ecShards.VolumeId
 		if actualEcShards, ok := actualEcShardMap[vid]; !ok {
@@ -60,7 +60,7 @@ func (dn *DataNode) UpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo)
 
 		disk := dn.getOrCreateDisk(ecShards.DiskType)
 		deltaDiskUsages := newDiskUsages()
-		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(ecShards.DiskType))
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(ecShards.DiskType))
 
 		if dn.hasEcShards(ecShards.VolumeId) {
 			newShards = append(newShards, ecShards)
diff --git a/weed/topology/disk.go b/weed/topology/disk.go
index b13ff3fbf..831528949 100644
--- a/weed/topology/disk.go
+++ b/weed/topology/disk.go
@@ -63,7 +63,7 @@ func (d *DiskUsages) ToMap() interface{} {
 	defer d.RUnlock()
 	ret := make(map[string]interface{})
 	for diskType, diskUsage := range d.usages {
-		ret[types.DiskType(diskType).String()] = diskUsage.ToMap()
+		ret[diskType.String()] = diskUsage.ToMap()
 	}
 	return ret
 }
@@ -156,7 +156,7 @@ func (d *Disk) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool)
 
 func (d *Disk) doAddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {
 	deltaDiskUsages := newDiskUsages()
-	deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(v.DiskType))
+	deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(v.DiskType))
 	if oldV, ok := d.volumes[v.Id]; !ok {
 		d.volumes[v.Id] = v
 		deltaDiskUsage.volumeCount = 1
@@ -228,7 +228,7 @@ func (d *Disk) GetTopology() *Topology {
 
 func (d *Disk) ToMap() interface{} {
 	ret := make(map[string]interface{})
-	diskUsage := d.diskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	diskUsage := d.diskUsages.getOrCreateDisk(types.ToDiskType(string(d.Id())))
 	ret["Volumes"] = diskUsage.volumeCount
 	ret["VolumeIds"] = d.GetVolumeIds()
 	ret["EcShards"] = diskUsage.ecShardCount
@@ -238,12 +238,12 @@ func (d *Disk) ToMap() interface{} {
 }
 
 func (d *Disk) FreeSpace() int64 {
-	t := d.diskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	t := d.diskUsages.getOrCreateDisk(types.ToDiskType(string(d.Id())))
 	return t.FreeSpace()
 }
 
 func (d *Disk) ToDiskInfo() *master_pb.DiskInfo {
-	diskUsage := d.diskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	diskUsage := d.diskUsages.getOrCreateDisk(types.ToDiskType(string(d.Id())))
 	m := &master_pb.DiskInfo{
 		Type:              string(d.Id()),
 		VolumeCount:       uint64(diskUsage.volumeCount),
diff --git a/weed/topology/disk_ec.go b/weed/topology/disk_ec.go
index f03f68411..74a06b47f 100644
--- a/weed/topology/disk_ec.go
+++ b/weed/topology/disk_ec.go
@@ -30,7 +30,7 @@ func (d *Disk) AddOrUpdateEcShard(s *erasure_coding.EcVolumeInfo) {
 	}
 
 	deltaDiskUsages := newDiskUsages()
-	deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+	deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(string(d.Id())))
 	deltaDiskUsage.ecShardCount = int64(delta)
 	d.UpAdjustDiskUsageDelta(deltaDiskUsages)
 
@@ -46,7 +46,7 @@ func (d *Disk) DeleteEcShard(s *erasure_coding.EcVolumeInfo) {
 		delta := existing.ShardBits.ShardIdCount() - oldCount
 
 		deltaDiskUsages := newDiskUsages()
-		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(d.Id()))
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(string(d.Id())))
 		deltaDiskUsage.ecShardCount = int64(delta)
 		d.UpAdjustDiskUsageDelta(deltaDiskUsages)
 
diff --git a/weed/topology/node.go b/weed/topology/node.go
index 5275af64a..1f5e4194c 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -193,7 +193,7 @@ func (n *NodeImpl) AdjustMaxVolumeCounts(maxVolumeCounts map[string]uint32) {
 			// the volume server may have set the max to zero
 			continue
 		}
-		dt := types.DiskType(diskType)
+		dt := types.ToDiskType(diskType)
 		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(dt)
 		currentDiskUsage := n.diskUsages.getOrCreateDisk(dt)
 		deltaDiskUsage.maxVolumeCount = int64(maxVolumeCount) - currentDiskUsage.maxVolumeCount
diff --git a/weed/topology/rack.go b/weed/topology/rack.go
index e75318ffe..95fd260ad 100644
--- a/weed/topology/rack.go
+++ b/weed/topology/rack.go
@@ -46,7 +46,7 @@ func (r *Rack) GetOrCreateDataNode(ip string, port int, publicUrl string, maxVol
 	r.LinkChildNode(dn)
 	for diskType, maxVolumeCount := range maxVolumeCounts {
 		disk := NewDisk(diskType)
-		disk.diskUsages.getOrCreateDisk(types.DiskType(diskType)).maxVolumeCount = int64(maxVolumeCount)
+		disk.diskUsages.getOrCreateDisk(types.ToDiskType(diskType)).maxVolumeCount = int64(maxVolumeCount)
 		dn.LinkChildNode(disk)
 	}
 	return dn
diff --git a/weed/topology/topology_event_handling.go b/weed/topology/topology_event_handling.go
index 1b1d0fe86..543dacf29 100644
--- a/weed/topology/topology_event_handling.go
+++ b/weed/topology/topology_event_handling.go
@@ -52,7 +52,7 @@ func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool {
 
 			disk := dn.getOrCreateDisk(volumeInfo.DiskType)
 			deltaDiskUsages := newDiskUsages()
-			deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.DiskType(volumeInfo.DiskType))
+			deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(volumeInfo.DiskType))
 			deltaDiskUsage.activeVolumeCount = -1
 			disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
 

From cb9cc295184c269da5d4e4028ca29badfa16eec7 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 03:55:24 -0800
Subject: [PATCH 069/140] volume.list display; fix updating maxVolumeCount for
 disk

---
 weed/topology/data_center.go  |  3 ++-
 weed/topology/data_node.go    | 19 +++++++++++++++++++
 weed/topology/disk.go         | 28 +++++++++++++++++++++-------
 weed/topology/node.go         | 16 ----------------
 weed/topology/rack.go         |  3 ++-
 weed/topology/topology_map.go |  3 ++-
 6 files changed, 46 insertions(+), 26 deletions(-)

diff --git a/weed/topology/data_center.go b/weed/topology/data_center.go
index 250e4bbdd..60d91ba6d 100644
--- a/weed/topology/data_center.go
+++ b/weed/topology/data_center.go
@@ -44,7 +44,8 @@ func (dc *DataCenter) ToMap() interface{} {
 
 func (dc *DataCenter) ToDataCenterInfo() *master_pb.DataCenterInfo {
 	m := &master_pb.DataCenterInfo{
-		Id:                string(dc.Id()),
+		Id:        string(dc.Id()),
+		DiskInfos: dc.diskUsages.ToDiskInfo(),
 	}
 	for _, c := range dc.Children() {
 		rack := c.(*Rack)
diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 038d87043..ae69534da 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -128,6 +128,25 @@ func (dn *DataNode) DeltaUpdateVolumes(newVolumes, deletedVolumes []storage.Volu
 	return
 }
 
+func (dn *DataNode) AdjustMaxVolumeCounts(maxVolumeCounts map[string]uint32) {
+	deltaDiskUsages := newDiskUsages()
+	for diskType, maxVolumeCount := range maxVolumeCounts {
+		if maxVolumeCount == 0 {
+			// the volume server may have set the max to zero
+			continue
+		}
+		dt := types.ToDiskType(diskType)
+		currentDiskUsage := dn.diskUsages.getOrCreateDisk(dt)
+		if currentDiskUsage.maxVolumeCount == int64(maxVolumeCount) {
+			continue
+		}
+		disk := dn.getOrCreateDisk(dt.String())
+		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(dt)
+		deltaDiskUsage.maxVolumeCount = int64(maxVolumeCount) - currentDiskUsage.maxVolumeCount
+		disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
+	}
+}
+
 func (dn *DataNode) GetVolumes() (ret []storage.VolumeInfo) {
 	dn.RLock()
 	for _, c := range dn.children {
diff --git a/weed/topology/disk.go b/weed/topology/disk.go
index 831528949..0e8ce60cd 100644
--- a/weed/topology/disk.go
+++ b/weed/topology/disk.go
@@ -42,7 +42,7 @@ func newDiskUsages() *DiskUsages {
 	}
 }
 
-func (d *DiskUsages) negative() (*DiskUsages) {
+func (d *DiskUsages) negative() *DiskUsages {
 	d.RLock()
 	defer d.RUnlock()
 	t := newDiskUsages()
@@ -68,6 +68,21 @@ func (d *DiskUsages) ToMap() interface{} {
 	return ret
 }
 
+func (d *DiskUsages) ToDiskInfo() (map[string]*master_pb.DiskInfo) {
+	ret := make(map[string]*master_pb.DiskInfo)
+	for diskType, diskUsageCounts := range d.usages {
+		m := &master_pb.DiskInfo{
+			VolumeCount:       uint64(diskUsageCounts.volumeCount),
+			MaxVolumeCount:    uint64(diskUsageCounts.maxVolumeCount),
+			FreeVolumeCount:   uint64(diskUsageCounts.maxVolumeCount - diskUsageCounts.volumeCount),
+			ActiveVolumeCount: uint64(diskUsageCounts.activeVolumeCount),
+			RemoteVolumeCount: uint64(diskUsageCounts.remoteVolumeCount),
+		}
+		ret[string(diskType)] = m
+	}
+	return ret
+}
+
 func (d *DiskUsages) FreeSpace() (freeSpace int64) {
 	d.RLock()
 	defer d.RUnlock()
@@ -77,7 +92,6 @@ func (d *DiskUsages) FreeSpace() (freeSpace int64) {
 	return
 }
 
-
 func (d *DiskUsages) GetMaxVolumeCount() (maxVolumeCount int64) {
 	d.RLock()
 	defer d.RUnlock()
@@ -111,13 +125,13 @@ func (a *DiskUsageCounts) FreeSpace() int64 {
 	return freeVolumeSlotCount
 }
 
-func (a *DiskUsageCounts) minus(b *DiskUsageCounts) (*DiskUsageCounts) {
+func (a *DiskUsageCounts) minus(b *DiskUsageCounts) *DiskUsageCounts {
 	return &DiskUsageCounts{
-		volumeCount: a.volumeCount - b.volumeCount,
+		volumeCount:       a.volumeCount - b.volumeCount,
 		remoteVolumeCount: a.remoteVolumeCount - b.remoteVolumeCount,
 		activeVolumeCount: a.activeVolumeCount - b.activeVolumeCount,
-		ecShardCount: a.ecShardCount - b.ecShardCount,
-		maxVolumeCount: a.maxVolumeCount - b.maxVolumeCount,
+		ecShardCount:      a.ecShardCount - b.ecShardCount,
+		maxVolumeCount:    a.maxVolumeCount - b.maxVolumeCount,
 	}
 }
 
@@ -248,7 +262,7 @@ func (d *Disk) ToDiskInfo() *master_pb.DiskInfo {
 		Type:              string(d.Id()),
 		VolumeCount:       uint64(diskUsage.volumeCount),
 		MaxVolumeCount:    uint64(diskUsage.maxVolumeCount),
-		FreeVolumeCount:   uint64(d.FreeSpace()),
+		FreeVolumeCount:   uint64(diskUsage.maxVolumeCount - diskUsage.volumeCount),
 		ActiveVolumeCount: uint64(diskUsage.activeVolumeCount),
 		RemoteVolumeCount: uint64(diskUsage.remoteVolumeCount),
 	}
diff --git a/weed/topology/node.go b/weed/topology/node.go
index 1f5e4194c..25b048452 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -186,22 +186,6 @@ func (n *NodeImpl) ReserveOneVolume(r int64, option *VolumeGrowOption) (assigned
 	return nil, errors.New("No free volume slot found!")
 }
 
-func (n *NodeImpl) AdjustMaxVolumeCounts(maxVolumeCounts map[string]uint32) {
-	deltaDiskUsages := newDiskUsages()
-	for diskType, maxVolumeCount := range maxVolumeCounts {
-		if maxVolumeCount == 0 {
-			// the volume server may have set the max to zero
-			continue
-		}
-		dt := types.ToDiskType(diskType)
-		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(dt)
-		currentDiskUsage := n.diskUsages.getOrCreateDisk(dt)
-		deltaDiskUsage.maxVolumeCount = int64(maxVolumeCount) - currentDiskUsage.maxVolumeCount
-		deltaDiskUsages.getOrCreateDisk(dt).maxVolumeCount = int64(maxVolumeCount)
-	}
-	n.UpAdjustDiskUsageDelta(deltaDiskUsages)
-}
-
 func (n *NodeImpl) UpAdjustDiskUsageDelta(deltaDiskUsages *DiskUsages) { //can be negative
 	for diskType, diskUsage := range deltaDiskUsages.usages {
 		existingDisk := n.getOrCreateDisk(diskType)
diff --git a/weed/topology/rack.go b/weed/topology/rack.go
index 95fd260ad..8eb2a717c 100644
--- a/weed/topology/rack.go
+++ b/weed/topology/rack.go
@@ -66,7 +66,8 @@ func (r *Rack) ToMap() interface{} {
 
 func (r *Rack) ToRackInfo() *master_pb.RackInfo {
 	m := &master_pb.RackInfo{
-		Id:                string(r.Id()),
+		Id:        string(r.Id()),
+		DiskInfos: r.diskUsages.ToDiskInfo(),
 	}
 	for _, c := range r.Children() {
 		dn := c.(*DataNode)
diff --git a/weed/topology/topology_map.go b/weed/topology/topology_map.go
index aa2c9afcd..0fedb6221 100644
--- a/weed/topology/topology_map.go
+++ b/weed/topology/topology_map.go
@@ -80,7 +80,8 @@ func (t *Topology) ToVolumeLocations() (volumeLocations []*master_pb.VolumeLocat
 
 func (t *Topology) ToTopologyInfo() *master_pb.TopologyInfo {
 	m := &master_pb.TopologyInfo{
-		Id:                string(t.Id()),
+		Id:        string(t.Id()),
+		DiskInfos: t.diskUsages.ToDiskInfo(),
 	}
 	for _, c := range t.Children() {
 		dc := c.(*DataCenter)

From 38bbef7ec1e945eef626bf6f638cbb0ec4dbe20b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 04:16:46 -0800
Subject: [PATCH 070/140] avoid nil

---
 weed/shell/command_volume_balance.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index 9fa915ea4..f5fdf2216 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -205,7 +205,10 @@ type CapacityFunc func(*master_pb.DataNodeInfo) int
 
 func capacityByMaxVolumeCount(diskType types.DiskType) CapacityFunc {
 	return func(info *master_pb.DataNodeInfo) int {
-		diskInfo := info.DiskInfos[string(diskType)]
+		diskInfo, found := info.DiskInfos[string(diskType)]
+		if !found {
+			return 0
+		}
 		return int(diskInfo.MaxVolumeCount)
 	}
 }

From 43101ccea03f45de6d43b41a4d08eba1de1b89e6 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 04:27:16 -0800
Subject: [PATCH 071/140] move to the empty nodes first

---
 weed/shell/command_volume_balance.go         | 10 ++++++++++
 weed/shell/command_volume_server_evacuate.go |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index f5fdf2216..a1e3c1ab6 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -213,6 +213,16 @@ func capacityByMaxVolumeCount(diskType types.DiskType) CapacityFunc {
 	}
 }
 
+func capacityByFreeVolumeCount(diskType types.DiskType) CapacityFunc {
+	return func(info *master_pb.DataNodeInfo) int {
+		diskInfo, found := info.DiskInfos[string(diskType)]
+		if !found {
+			return 0
+		}
+		return int(diskInfo.MaxVolumeCount - diskInfo.VolumeCount)
+	}
+}
+
 func (n *Node) localVolumeRatio(capacityFunc CapacityFunc) float64 {
 	return divide(len(n.selectedVolumes), capacityFunc(n.info))
 }
diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index 65bf578a0..8acc943cf 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -180,7 +180,7 @@ func moveAwayOneEcVolume(commandEnv *CommandEnv, ecShardInfo *master_pb.VolumeEc
 
 func moveAwayOneNormalVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, vol *master_pb.VolumeInformationMessage, thisNode *Node, otherNodes []*Node, applyChange bool) (hasMoved bool, err error) {
 	sort.Slice(otherNodes, func(i, j int) bool {
-		return otherNodes[i].localVolumeRatio(capacityByMaxVolumeCount(types.ToDiskType(vol.DiskType))) < otherNodes[j].localVolumeRatio(capacityByMaxVolumeCount(types.ToDiskType(vol.DiskType)))
+		return otherNodes[i].localVolumeRatio(capacityByFreeVolumeCount(types.ToDiskType(vol.DiskType))) > otherNodes[j].localVolumeRatio(capacityByFreeVolumeCount(types.ToDiskType(vol.DiskType)))
 	})
 
 	for i := 0; i < len(otherNodes); i++ {

From 36f95e50a9beb528263dcf69277365baf7b4e82b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 05:13:48 -0800
Subject: [PATCH 072/140] avoid possible nil disk info

---
 weed/shell/command_ec_balance.go             | 44 ++++++++++-------
 weed/shell/command_ec_common.go              | 51 +++++++++++---------
 weed/shell/command_ec_decode.go              | 27 ++++++-----
 weed/shell/command_volume_fix_replication.go |  7 ++-
 4 files changed, 73 insertions(+), 56 deletions(-)

diff --git a/weed/shell/command_ec_balance.go b/weed/shell/command_ec_balance.go
index 546a8340e..2baadb144 100644
--- a/weed/shell/command_ec_balance.go
+++ b/weed/shell/command_ec_balance.go
@@ -388,7 +388,10 @@ func doBalanceEcRack(commandEnv *CommandEnv, ecRack *EcRack, applyBalancing bool
 	}
 
 	ecNodeIdToShardCount := groupByCount(rackEcNodes, func(ecNode *EcNode) (id string, count int) {
-		diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+		diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]
+		if !found {
+			return
+		}
 		for _, ecShardInfo := range diskInfo.EcShardInfos {
 			count += erasure_coding.ShardBits(ecShardInfo.EcIndexBits).ShardIdCount()
 		}
@@ -413,28 +416,30 @@ func doBalanceEcRack(commandEnv *CommandEnv, ecRack *EcRack, applyBalancing bool
 		if fullNodeShardCount > averageShardCount && emptyNodeShardCount+1 <= averageShardCount {
 
 			emptyNodeIds := make(map[uint32]bool)
-			emptyDiskInfo := emptyNode.info.DiskInfos[string(types.HardDriveType)]
-			for _, shards := range emptyDiskInfo.EcShardInfos {
-				emptyNodeIds[shards.Id] = true
+			if emptyDiskInfo, found := emptyNode.info.DiskInfos[string(types.HardDriveType)]; found {
+				for _, shards := range emptyDiskInfo.EcShardInfos {
+					emptyNodeIds[shards.Id] = true
+				}
 			}
-			fullDiskInfo := fullNode.info.DiskInfos[string(types.HardDriveType)]
-			for _, shards := range fullDiskInfo.EcShardInfos {
-				if _, found := emptyNodeIds[shards.Id]; !found {
-					for _, shardId := range erasure_coding.ShardBits(shards.EcIndexBits).ShardIds() {
+			if fullDiskInfo, found := fullNode.info.DiskInfos[string(types.HardDriveType)]; found {
+				for _, shards := range fullDiskInfo.EcShardInfos {
+					if _, found := emptyNodeIds[shards.Id]; !found {
+						for _, shardId := range erasure_coding.ShardBits(shards.EcIndexBits).ShardIds() {
 
-						fmt.Printf("%s moves ec shards %d.%d to %s\n", fullNode.info.Id, shards.Id, shardId, emptyNode.info.Id)
+							fmt.Printf("%s moves ec shards %d.%d to %s\n", fullNode.info.Id, shards.Id, shardId, emptyNode.info.Id)
 
-						err := moveMountedShardToEcNode(commandEnv, fullNode, shards.Collection, needle.VolumeId(shards.Id), shardId, emptyNode, applyBalancing)
-						if err != nil {
-							return err
+							err := moveMountedShardToEcNode(commandEnv, fullNode, shards.Collection, needle.VolumeId(shards.Id), shardId, emptyNode, applyBalancing)
+							if err != nil {
+								return err
+							}
+
+							ecNodeIdToShardCount[emptyNode.info.Id]++
+							ecNodeIdToShardCount[fullNode.info.Id]--
+							hasMove = true
+							break
 						}
-
-						ecNodeIdToShardCount[emptyNode.info.Id]++
-						ecNodeIdToShardCount[fullNode.info.Id]--
-						hasMove = true
 						break
 					}
-					break
 				}
 			}
 		}
@@ -515,7 +520,10 @@ func pickNEcShardsToMoveFrom(ecNodes []*EcNode, vid needle.VolumeId, n int) map[
 func collectVolumeIdToEcNodes(allEcNodes []*EcNode) map[needle.VolumeId][]*EcNode {
 	vidLocations := make(map[needle.VolumeId][]*EcNode)
 	for _, ecNode := range allEcNodes {
-		diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
+		diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]
+		if !found {
+			continue
+		}
 		for _, shardInfo := range diskInfo.EcShardInfos {
 			vidLocations[needle.VolumeId(shardInfo.Id)] = append(vidLocations[needle.VolumeId(shardInfo.Id)], ecNode)
 		}
diff --git a/weed/shell/command_ec_common.go b/weed/shell/command_ec_common.go
index 7c23fda0e..c3ffa67d6 100644
--- a/weed/shell/command_ec_common.go
+++ b/weed/shell/command_ec_common.go
@@ -288,10 +288,11 @@ func ceilDivide(total, n int) int {
 
 func findEcVolumeShards(ecNode *EcNode, vid needle.VolumeId) erasure_coding.ShardBits {
 
-	diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
-	for _, shardInfo := range diskInfo.EcShardInfos {
-		if needle.VolumeId(shardInfo.Id) == vid {
-			return erasure_coding.ShardBits(shardInfo.EcIndexBits)
+	if diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]; found {
+		for _, shardInfo := range diskInfo.EcShardInfos {
+			if needle.VolumeId(shardInfo.Id) == vid {
+				return erasure_coding.ShardBits(shardInfo.EcIndexBits)
+			}
 		}
 	}
 
@@ -301,18 +302,19 @@ func findEcVolumeShards(ecNode *EcNode, vid needle.VolumeId) erasure_coding.Shar
 func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string, shardIds []uint32) *EcNode {
 
 	foundVolume := false
-	diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
-	for _, shardInfo := range diskInfo.EcShardInfos {
-		if needle.VolumeId(shardInfo.Id) == vid {
-			oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
-			newShardBits := oldShardBits
-			for _, shardId := range shardIds {
-				newShardBits = newShardBits.AddShardId(erasure_coding.ShardId(shardId))
+	if diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]; found {
+		for _, shardInfo := range diskInfo.EcShardInfos {
+			if needle.VolumeId(shardInfo.Id) == vid {
+				oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
+				newShardBits := oldShardBits
+				for _, shardId := range shardIds {
+					newShardBits = newShardBits.AddShardId(erasure_coding.ShardId(shardId))
+				}
+				shardInfo.EcIndexBits = uint32(newShardBits)
+				ecNode.freeEcSlot -= newShardBits.ShardIdCount() - oldShardBits.ShardIdCount()
+				foundVolume = true
+				break
 			}
-			shardInfo.EcIndexBits = uint32(newShardBits)
-			ecNode.freeEcSlot -= newShardBits.ShardIdCount() - oldShardBits.ShardIdCount()
-			foundVolume = true
-			break
 		}
 	}
 
@@ -335,16 +337,17 @@ func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string,
 
 func (ecNode *EcNode) deleteEcVolumeShards(vid needle.VolumeId, shardIds []uint32) *EcNode {
 
-	diskInfo := ecNode.info.DiskInfos[string(types.HardDriveType)]
-	for _, shardInfo := range diskInfo.EcShardInfos {
-		if needle.VolumeId(shardInfo.Id) == vid {
-			oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
-			newShardBits := oldShardBits
-			for _, shardId := range shardIds {
-				newShardBits = newShardBits.RemoveShardId(erasure_coding.ShardId(shardId))
+	if diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]; found {
+		for _, shardInfo := range diskInfo.EcShardInfos {
+			if needle.VolumeId(shardInfo.Id) == vid {
+				oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
+				newShardBits := oldShardBits
+				for _, shardId := range shardIds {
+					newShardBits = newShardBits.RemoveShardId(erasure_coding.ShardId(shardId))
+				}
+				shardInfo.EcIndexBits = uint32(newShardBits)
+				ecNode.freeEcSlot -= newShardBits.ShardIdCount() - oldShardBits.ShardIdCount()
 			}
-			shardInfo.EcIndexBits = uint32(newShardBits)
-			ecNode.freeEcSlot -= newShardBits.ShardIdCount() - oldShardBits.ShardIdCount()
 		}
 	}
 
diff --git a/weed/shell/command_ec_decode.go b/weed/shell/command_ec_decode.go
index 61b810a8c..3e1499d41 100644
--- a/weed/shell/command_ec_decode.go
+++ b/weed/shell/command_ec_decode.go
@@ -226,10 +226,11 @@ func collectTopologyInfo(commandEnv *CommandEnv) (topoInfo *master_pb.TopologyIn
 func collectEcShardInfos(topoInfo *master_pb.TopologyInfo, selectedCollection string, vid needle.VolumeId) (ecShardInfos []*master_pb.VolumeEcShardInformationMessage) {
 
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		diskInfo := dn.DiskInfos[string(types.HardDriveType)]
-		for _, v := range diskInfo.EcShardInfos {
-			if v.Collection == selectedCollection && v.Id == uint32(vid) {
-				ecShardInfos = append(ecShardInfos, v)
+		if diskInfo, found := dn.DiskInfos[string(types.HardDriveType)]; found {
+			for _, v := range diskInfo.EcShardInfos {
+				if v.Collection == selectedCollection && v.Id == uint32(vid) {
+					ecShardInfos = append(ecShardInfos, v)
+				}
 			}
 		}
 	})
@@ -241,10 +242,11 @@ func collectEcShardIds(topoInfo *master_pb.TopologyInfo, selectedCollection stri
 
 	vidMap := make(map[uint32]bool)
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		diskInfo := dn.DiskInfos[string(types.HardDriveType)]
-		for _, v := range diskInfo.EcShardInfos {
-			if v.Collection == selectedCollection {
-				vidMap[v.Id] = true
+		if diskInfo, found := dn.DiskInfos[string(types.HardDriveType)]; found {
+			for _, v := range diskInfo.EcShardInfos {
+				if v.Collection == selectedCollection {
+					vidMap[v.Id] = true
+				}
 			}
 		}
 	})
@@ -260,10 +262,11 @@ func collectEcNodeShardBits(topoInfo *master_pb.TopologyInfo, vid needle.VolumeI
 
 	nodeToEcIndexBits := make(map[string]erasure_coding.ShardBits)
 	eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
-		diskInfo := dn.DiskInfos[string(types.HardDriveType)]
-		for _, v := range diskInfo.EcShardInfos {
-			if v.Id == uint32(vid) {
-				nodeToEcIndexBits[dn.Id] = erasure_coding.ShardBits(v.EcIndexBits)
+		if diskInfo, found := dn.DiskInfos[string(types.HardDriveType)]; found {
+			for _, v := range diskInfo.EcShardInfos {
+				if v.Id == uint32(vid) {
+					nodeToEcIndexBits[dn.Id] = erasure_coding.ShardBits(v.EcIndexBits)
+				}
 			}
 		}
 	})
diff --git a/weed/shell/command_volume_fix_replication.go b/weed/shell/command_volume_fix_replication.go
index c7de14318..7b2eb6769 100644
--- a/weed/shell/command_volume_fix_replication.go
+++ b/weed/shell/command_volume_fix_replication.go
@@ -5,6 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
 	"path/filepath"
 	"sort"
@@ -167,7 +168,8 @@ func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *Comm
 		keepDataNodesSorted(allLocations, replica.info.DiskType)
 		for _, dst := range allLocations {
 			// check whether data nodes satisfy the constraints
-			if dst.dataNode.DiskInfos[replica.info.DiskType].FreeVolumeCount > 0 && satisfyReplicaPlacement(replicaPlacement, replicas, dst) {
+			fn := capacityByFreeVolumeCount(types.ToDiskType(replica.info.DiskType))
+			if fn(dst.dataNode) > 0 && satisfyReplicaPlacement(replicaPlacement, replicas, dst) {
 				// check collection name pattern
 				if *c.collectionPattern != "" {
 					matched, err := filepath.Match(*c.collectionPattern, replica.info.Collection)
@@ -218,8 +220,9 @@ func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *Comm
 }
 
 func keepDataNodesSorted(dataNodes []location, diskType string) {
+	fn := capacityByFreeVolumeCount(types.ToDiskType(diskType))
 	sort.Slice(dataNodes, func(i, j int) bool {
-		return dataNodes[i].dataNode.DiskInfos[diskType].FreeVolumeCount > dataNodes[j].dataNode.DiskInfos[diskType].FreeVolumeCount
+		return fn(dataNodes[i].dataNode) > fn(dataNodes[j].dataNode)
 	})
 }
 

From a0c6db361c7f37f88c58c61b253e2f8cb28d582b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 05:33:38 -0800
Subject: [PATCH 073/140] avoid nil

---
 weed/shell/command_ec_common.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/weed/shell/command_ec_common.go b/weed/shell/command_ec_common.go
index c3ffa67d6..87a138ab6 100644
--- a/weed/shell/command_ec_common.go
+++ b/weed/shell/command_ec_common.go
@@ -302,7 +302,8 @@ func findEcVolumeShards(ecNode *EcNode, vid needle.VolumeId) erasure_coding.Shar
 func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string, shardIds []uint32) *EcNode {
 
 	foundVolume := false
-	if diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]; found {
+	diskInfo, found := ecNode.info.DiskInfos[string(types.HardDriveType)]
+	if found {
 		for _, shardInfo := range diskInfo.EcShardInfos {
 			if needle.VolumeId(shardInfo.Id) == vid {
 				oldShardBits := erasure_coding.ShardBits(shardInfo.EcIndexBits)
@@ -316,6 +317,11 @@ func (ecNode *EcNode) addEcVolumeShards(vid needle.VolumeId, collection string,
 				break
 			}
 		}
+	} else {
+		diskInfo = &master_pb.DiskInfo{
+			Type: string(types.HardDriveType),
+		}
+		ecNode.info.DiskInfos[string(types.HardDriveType)] = diskInfo
 	}
 
 	if !foundVolume {

From ebf320ec2260f86558693f4bd8876df3bc6fb094 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 05:59:24 -0800
Subject: [PATCH 074/140] avoid divided by zero

---
 weed/storage/store.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/storage/store.go b/weed/storage/store.go
index a18d87a77..92f1db2bc 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -471,6 +471,9 @@ func (s *Store) GetVolumeSizeLimit() uint64 {
 
 func (s *Store) MaybeAdjustVolumeMax() (hasChanges bool) {
 	volumeSizeLimit := s.GetVolumeSizeLimit()
+	if volumeSizeLimit == 0 {
+		return
+	}
 	for _, diskLocation := range s.Locations {
 		if diskLocation.OriginalMaxVolumeCount == 0 {
 			currentMaxVolumeCount := diskLocation.MaxVolumeCount

From 3097b9a9b7859dc41e9223df2ade8f21e3e6b3f6 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 05:59:43 -0800
Subject: [PATCH 075/140] fix existence checking

---
 weed/topology/data_node_ec.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/topology/data_node_ec.go b/weed/topology/data_node_ec.go
index cd4c5cd8b..df1b6d658 100644
--- a/weed/topology/data_node_ec.go
+++ b/weed/topology/data_node_ec.go
@@ -62,7 +62,7 @@ func (dn *DataNode) UpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo)
 		deltaDiskUsages := newDiskUsages()
 		deltaDiskUsage := deltaDiskUsages.getOrCreateDisk(types.ToDiskType(ecShards.DiskType))
 
-		if dn.hasEcShards(ecShards.VolumeId) {
+		if !dn.hasEcShards(ecShards.VolumeId) {
 			newShards = append(newShards, ecShards)
 			newShardCount += ecShards.ShardIdCount()
 		}

From ad70107eb4285f2d42ec011de7060b50ad1829b4 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 06:22:50 -0800
Subject: [PATCH 076/140] ec balance among nodes with HDD

---
 weed/shell/command_ec_balance.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/weed/shell/command_ec_balance.go b/weed/shell/command_ec_balance.go
index 2baadb144..b1ca926d5 100644
--- a/weed/shell/command_ec_balance.go
+++ b/weed/shell/command_ec_balance.go
@@ -326,7 +326,9 @@ func balanceEcShardsWithinRacks(commandEnv *CommandEnv, allEcNodes []*EcNode, ra
 
 			var possibleDestinationEcNodes []*EcNode
 			for _, n := range racks[RackId(rackId)].ecNodes {
-				possibleDestinationEcNodes = append(possibleDestinationEcNodes, n)
+				if _, found := n.info.DiskInfos[string(types.HardDriveType)]; found {
+					possibleDestinationEcNodes = append(possibleDestinationEcNodes, n)
+				}
 			}
 			sourceEcNodes := rackEcNodesWithVid[rackId]
 			averageShardsPerEcNode := ceilDivide(rackToShardCount[rackId], len(possibleDestinationEcNodes))

From 38efc6f5727046a38e8e1903f7fb715362926b7e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 10:47:32 -0800
Subject: [PATCH 077/140] simplify

---
 weed/shell/command_volume_server_evacuate.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index 8acc943cf..5216de66b 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -179,8 +179,9 @@ func moveAwayOneEcVolume(commandEnv *CommandEnv, ecShardInfo *master_pb.VolumeEc
 }
 
 func moveAwayOneNormalVolume(commandEnv *CommandEnv, volumeReplicas map[uint32][]*VolumeReplica, vol *master_pb.VolumeInformationMessage, thisNode *Node, otherNodes []*Node, applyChange bool) (hasMoved bool, err error) {
+	fn := capacityByFreeVolumeCount(types.ToDiskType(vol.DiskType))
 	sort.Slice(otherNodes, func(i, j int) bool {
-		return otherNodes[i].localVolumeRatio(capacityByFreeVolumeCount(types.ToDiskType(vol.DiskType))) > otherNodes[j].localVolumeRatio(capacityByFreeVolumeCount(types.ToDiskType(vol.DiskType)))
+		return otherNodes[i].localVolumeRatio(fn) > otherNodes[j].localVolumeRatio(fn)
 	})
 
 	for i := 0; i < len(otherNodes); i++ {

From 53ca7e66ef03964b2e02ae8eb64f02bbd0d0cb16 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 10:48:16 -0800
Subject: [PATCH 078/140] avoid dead lock

---
 weed/topology/data_node.go | 2 +-
 weed/topology/node.go      | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index ae69534da..1a0ebf761 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -46,7 +46,7 @@ func (dn *DataNode) getOrCreateDisk(diskType string) *Disk {
 	c, found := dn.children[NodeId(diskType)]
 	if !found {
 		c = NewDisk(diskType)
-		dn.LinkChildNode(c)
+		dn.doLinkChildNode(c)
 	}
 	disk := c.(*Disk)
 	return disk
diff --git a/weed/topology/node.go b/weed/topology/node.go
index 25b048452..f9ac890ef 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -210,6 +210,10 @@ func (n *NodeImpl) GetMaxVolumeId() needle.VolumeId {
 func (n *NodeImpl) LinkChildNode(node Node) {
 	n.Lock()
 	defer n.Unlock()
+	n.doLinkChildNode(node)
+}
+
+func (n *NodeImpl) doLinkChildNode(node Node) {
 	if n.children[node.Id()] == nil {
 		n.children[node.Id()] = node
 		n.UpAdjustDiskUsageDelta(node.GetDiskUsages())

From b314d78e97af3e3aeca4f31ac714f7cd23ae9cec Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 10:48:28 -0800
Subject: [PATCH 079/140] fix print

---
 weed/topology/disk.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/topology/disk.go b/weed/topology/disk.go
index 0e8ce60cd..c159c4cca 100644
--- a/weed/topology/disk.go
+++ b/weed/topology/disk.go
@@ -159,7 +159,7 @@ func (du *DiskUsages) getOrCreateDisk(diskType types.DiskType) *DiskUsageCounts
 func (d *Disk) String() string {
 	d.RLock()
 	defer d.RUnlock()
-	return fmt.Sprintf("Disk:%s, volumes:%v, ecShards:%v, Port:%d, PublicUrl:%s", d.NodeImpl.String(), d.volumes, d.ecShards)
+	return fmt.Sprintf("Disk:%s, volumes:%v, ecShards:%v", d.NodeImpl.String(), d.volumes, d.ecShards)
 }
 
 func (d *Disk) AddOrUpdateVolume(v storage.VolumeInfo) (isNew, isChangedRO bool) {

From 7403cd43c5e6fa7a7b32dba817bdf99c1f27b2eb Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 10:50:42 -0800
Subject: [PATCH 080/140] only use "" for hdd to avoid two values for the same
 thing

---
 weed/storage/types/volume_disk_type.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/weed/storage/types/volume_disk_type.go b/weed/storage/types/volume_disk_type.go
index d49891a63..0e199a626 100644
--- a/weed/storage/types/volume_disk_type.go
+++ b/weed/storage/types/volume_disk_type.go
@@ -7,7 +7,7 @@ import (
 type DiskType string
 
 const (
-	HardDriveType DiskType = "hdd"
+	HardDriveType DiskType = ""
 	SsdType                = "ssd"
 )
 
@@ -27,7 +27,7 @@ func ToDiskType(vt string) (diskType DiskType) {
 
 func (diskType DiskType) String() string{
 	if diskType == "" {
-		return "hdd"
+		return ""
 	}
 	return string(diskType)
 }

From 68775d29e3a2e2a65b3b719c1d087b6616a0d18e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 10:51:03 -0800
Subject: [PATCH 081/140] fix tests

---
 weed/shell/command_ec_test.go       |  1 +
 weed/topology/topology_test.go      | 42 +++++++++++++++++++----------
 weed/topology/volume_growth_test.go |  8 +++++-
 3 files changed, 36 insertions(+), 15 deletions(-)

diff --git a/weed/shell/command_ec_test.go b/weed/shell/command_ec_test.go
index 4fddcbea5..14235d565 100644
--- a/weed/shell/command_ec_test.go
+++ b/weed/shell/command_ec_test.go
@@ -127,6 +127,7 @@ func newEcNode(dc string, rack string, dataNodeId string, freeEcSlot int) *EcNod
 	return &EcNode{
 		info: &master_pb.DataNodeInfo{
 			Id: dataNodeId,
+			DiskInfos: make(map[string]*master_pb.DiskInfo),
 		},
 		dc:         dc,
 		rack:       RackId(rack),
diff --git a/weed/topology/topology_test.go b/weed/topology/topology_test.go
index 1d9379210..ecfe9d8d1 100644
--- a/weed/topology/topology_test.go
+++ b/weed/topology/topology_test.go
@@ -14,11 +14,11 @@ import (
 func TestRemoveDataCenter(t *testing.T) {
 	topo := setup(topologyLayout)
 	topo.UnlinkChildNode(NodeId("dc2"))
-	if topo.GetActiveVolumeCount() != 15 {
+	if topo.diskUsages.usages[types.HardDriveType].activeVolumeCount != 15 {
 		t.Fail()
 	}
 	topo.UnlinkChildNode(NodeId("dc3"))
-	if topo.GetActiveVolumeCount() != 12 {
+	if topo.diskUsages.usages[types.HardDriveType].activeVolumeCount != 12 {
 		t.Fail()
 	}
 }
@@ -28,7 +28,10 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 
 	dc := topo.GetOrCreateDataCenter("dc1")
 	rack := dc.GetOrCreateRack("rack1")
-	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", 25, 12)
+	maxVolumeCounts := make(map[string]uint32)
+	maxVolumeCounts[""] = 25
+	maxVolumeCounts["ssd"] = 12
+	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", maxVolumeCounts)
 
 	{
 		volumeCount := 7
@@ -68,9 +71,11 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 
 		topo.SyncDataNodeRegistration(volumeMessages, dn)
 
-		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount*2)
-		assert(t, "volumeCount", int(topo.volumeCount), volumeCount)
-		assert(t, "ssdVolumeCount", int(topo.ssdVolumeCount), volumeCount)
+		usageCounts := topo.diskUsages.usages[types.HardDriveType]
+
+		assert(t, "activeVolumeCount1", int(usageCounts.activeVolumeCount), volumeCount)
+		assert(t, "volumeCount", int(usageCounts.volumeCount), volumeCount)
+		assert(t, "ssdVolumeCount", int(topo.diskUsages.usages[types.SsdType].volumeCount), volumeCount)
 	}
 
 	{
@@ -97,8 +102,10 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 		//layout := topo.GetVolumeLayout("", rp, needle.EMPTY_TTL)
 		//assert(t, "writables", len(layout.writables), volumeCount)
 
-		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount)
-		assert(t, "volumeCount", int(topo.volumeCount), volumeCount)
+		usageCounts := topo.diskUsages.usages[types.HardDriveType]
+
+		assert(t, "activeVolumeCount1", int(usageCounts.activeVolumeCount), volumeCount)
+		assert(t, "volumeCount", int(usageCounts.volumeCount), volumeCount)
 	}
 
 	{
@@ -118,16 +125,18 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 		layout := topo.GetVolumeLayout("", rp, needle.EMPTY_TTL, types.HardDriveType)
 		assert(t, "writables after repeated add", len(layout.writables), volumeCount)
 
-		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount)
-		assert(t, "volumeCount", int(topo.volumeCount), volumeCount)
+		usageCounts := topo.diskUsages.usages[types.HardDriveType]
+
+		assert(t, "activeVolumeCount1", int(usageCounts.activeVolumeCount), volumeCount)
+		assert(t, "volumeCount", int(usageCounts.volumeCount), volumeCount)
 
 		topo.IncrementalSyncDataNodeRegistration(
 			nil,
 			[]*master_pb.VolumeShortInformationMessage{newVolumeShortMessage},
 			dn)
 		assert(t, "writables after deletion", len(layout.writables), volumeCount-1)
-		assert(t, "activeVolumeCount1", int(topo.activeVolumeCount), volumeCount-1)
-		assert(t, "volumeCount", int(topo.volumeCount), volumeCount-1)
+		assert(t, "activeVolumeCount1", int(usageCounts.activeVolumeCount), volumeCount-1)
+		assert(t, "volumeCount", int(usageCounts.volumeCount), volumeCount-1)
 
 		topo.IncrementalSyncDataNodeRegistration(
 			[]*master_pb.VolumeShortInformationMessage{newVolumeShortMessage},
@@ -147,7 +156,9 @@ func TestHandlingVolumeServerHeartbeat(t *testing.T) {
 
 	topo.UnRegisterDataNode(dn)
 
-	assert(t, "activeVolumeCount2", int(topo.activeVolumeCount), 0)
+	usageCounts := topo.diskUsages.usages[types.HardDriveType]
+
+	assert(t, "activeVolumeCount2", int(usageCounts.activeVolumeCount), 0)
 
 }
 
@@ -163,7 +174,10 @@ func TestAddRemoveVolume(t *testing.T) {
 
 	dc := topo.GetOrCreateDataCenter("dc1")
 	rack := dc.GetOrCreateRack("rack1")
-	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", 25, 12)
+	maxVolumeCounts := make(map[string]uint32)
+	maxVolumeCounts[""] = 25
+	maxVolumeCounts["ssd"] = 12
+	dn := rack.GetOrCreateDataNode("127.0.0.1", 34534, "127.0.0.1", maxVolumeCounts)
 
 	v := storage.VolumeInfo{
 		Id:               needle.VolumeId(1),
diff --git a/weed/topology/volume_growth_test.go b/weed/topology/volume_growth_test.go
index bc9083fd2..ab30cd43f 100644
--- a/weed/topology/volume_growth_test.go
+++ b/weed/topology/volume_growth_test.go
@@ -103,7 +103,13 @@ func setup(topologyLayout string) *Topology {
 						Version: needle.CurrentVersion}
 					server.AddOrUpdateVolume(vi)
 				}
-				server.UpAdjustMaxVolumeCountDelta(int64(serverMap["limit"].(float64)))
+
+				disk := server.getOrCreateDisk("")
+				deltaDiskUsages := newDiskUsages()
+				deltaDiskUsage := deltaDiskUsages.getOrCreateDisk("")
+				deltaDiskUsage.maxVolumeCount = int64(serverMap["limit"].(float64))
+				disk.UpAdjustDiskUsageDelta(deltaDiskUsages)
+
 			}
 		}
 	}

From 0611233f16ff0e8f4b99aa6528f47153efd9a846 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 10:55:30 -0800
Subject: [PATCH 082/140] adjust printing

---
 weed/shell/command_volume_list.go | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/weed/shell/command_volume_list.go b/weed/shell/command_volume_list.go
index 140998338..dc8783cd1 100644
--- a/weed/shell/command_volume_list.go
+++ b/weed/shell/command_volume_list.go
@@ -48,6 +48,9 @@ func (c *commandVolumeList) Do(args []string, commandEnv *CommandEnv, writer io.
 func diskInfosToString(diskInfos map[string]*master_pb.DiskInfo) string {
 	var buf bytes.Buffer
 	for diskType, diskInfo := range diskInfos {
+		if diskType == "" {
+			diskType = "hdd"
+		}
 		fmt.Fprintf(&buf, " %s(volume:%d/%d active:%d free:%d remote:%d)", diskType, diskInfo.VolumeCount, diskInfo.MaxVolumeCount, diskInfo.ActiveVolumeCount, diskInfo.FreeVolumeCount, diskInfo.RemoteVolumeCount)
 	}
 	return buf.String()
@@ -107,7 +110,11 @@ func writeDataNodeInfo(writer io.Writer, t *master_pb.DataNodeInfo) statistics {
 
 func writeDiskInfo(writer io.Writer, t *master_pb.DiskInfo) statistics {
 	var s statistics
-	fmt.Fprintf(writer, "        Disk %s(%s)\n", t.Type, diskInfoToString(t))
+	diskType := t.Type
+	if diskType == "" {
+		diskType = "hdd"
+	}
+	fmt.Fprintf(writer, "        Disk %s(%s)\n", diskType, diskInfoToString(t))
 	sort.Slice(t.VolumeInfos, func(i, j int) bool {
 		return t.VolumeInfos[i].Id < t.VolumeInfos[j].Id
 	})
@@ -117,7 +124,7 @@ func writeDiskInfo(writer io.Writer, t *master_pb.DiskInfo) statistics {
 	for _, ecShardInfo := range t.EcShardInfos {
 		fmt.Fprintf(writer, "          ec volume id:%v collection:%v shards:%v\n", ecShardInfo.Id, ecShardInfo.Collection, erasure_coding.ShardBits(ecShardInfo.EcIndexBits).ShardIds())
 	}
-	fmt.Fprintf(writer, "        Disk %s %+v \n", t.Type, s)
+	fmt.Fprintf(writer, "        Disk %s %+v \n", diskType, s)
 	return s
 }
 

From 790252a9796ca3f973ddf5b7e7f3ccea832faf8f Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 15:17:51 -0800
Subject: [PATCH 083/140] Update .travis.yml

---
 .travis.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index c574b0894..a5ebf415f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 sudo: false
 language: go
 go:
-  - 1.14.x
   - 1.15.x
+  - 1.16.x
 
 before_install:
   - export PATH=/home/travis/gopath/bin:$PATH
@@ -44,4 +44,4 @@ deploy:
   on:
     tags: true
     repo: chrislusf/seaweedfs
-    go: 1.15.x
+    go: 1.16.x

From cd866664a85d8ea8969c7982262ac26a69825c39 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Feb 2021 15:39:12 -0800
Subject: [PATCH 084/140] skip JWT if fileId is empty

related to https://github.com/chrislusf/seaweedfs/issues/1808
---
 weed/server/master_server_handlers.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/server/master_server_handlers.go b/weed/server/master_server_handlers.go
index dc3df2348..117423ec6 100644
--- a/weed/server/master_server_handlers.go
+++ b/weed/server/master_server_handlers.go
@@ -136,6 +136,9 @@ func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request)
 }
 
 func (ms *MasterServer) maybeAddJwtAuthorization(w http.ResponseWriter, fileId string, isWrite bool) {
+	if fileId == "" {
+		return
+	}
 	var encodedJwt security.EncodedJwt
 	if isWrite {
 		encodedJwt = security.GenJwt(ms.guard.SigningKey, ms.guard.ExpiresAfterSec, fileId)

From add7906d7e6af6f3442f36f80a4e0fda7170b211 Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:27:13 -0800
Subject: [PATCH 085/140] Create auto_tag.yml

---
 .github/workflows/auto_tag.yml | 36 ++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 .github/workflows/auto_tag.yml

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
new file mode 100644
index 000000000..8cf685ac6
--- /dev/null
+++ b/.github/workflows/auto_tag.yml
@@ -0,0 +1,36 @@
+# This is a basic workflow to help you get started with Actions
+
+name: tag
+
+# Controls when the action will run. 
+on:
+  # Triggers the workflow on push or pull request events but only for the master branch
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      - name: Latest tag
+        # You may pin to the exact commit or the version.
+        # uses: EndBug/latest-tag@6d22a6738f5c33059e3a8c6ca5dcf8eaf8a14599
+        uses: EndBug/latest-tag@v1.4.0
+        with:
+          # Tag description
+          description: # optional
+          # Tag name
+          tag-name: # optional, default is latest

From 5f39dde8940d9c57509fedbf7a9a3dd25e3ab6df Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:31:05 -0800
Subject: [PATCH 086/140] Update auto_tag.yml

---
 .github/workflows/auto_tag.yml | 24 ++----------------------
 1 file changed, 2 insertions(+), 22 deletions(-)

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
index 8cf685ac6..dc81ffe9e 100644
--- a/.github/workflows/auto_tag.yml
+++ b/.github/workflows/auto_tag.yml
@@ -2,35 +2,15 @@
 
 name: tag
 
-# Controls when the action will run. 
 on:
-  # Triggers the workflow on push or pull request events but only for the master branch
   push:
     branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
-  # This workflow contains a single job called "build"
   build:
-    # The type of runner that the job will run on
     runs-on: ubuntu-latest
-
-    # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
-
       - name: Latest tag
-        # You may pin to the exact commit or the version.
-        # uses: EndBug/latest-tag@6d22a6738f5c33059e3a8c6ca5dcf8eaf8a14599
         uses: EndBug/latest-tag@v1.4.0
         with:
-          # Tag description
-          description: # optional
-          # Tag name
-          tag-name: # optional, default is latest
+          description: latest master branch builds
+          tag-name: latest

From 3dd0510ebed8f71d2de954c8f9d9fba2c53df6ee Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:34:51 -0800
Subject: [PATCH 087/140] Update auto_tag.yml

---
 .github/workflows/auto_tag.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
index dc81ffe9e..bb1ac59ce 100644
--- a/.github/workflows/auto_tag.yml
+++ b/.github/workflows/auto_tag.yml
@@ -9,7 +9,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Latest tag
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+    - name: Latest tag
         uses: EndBug/latest-tag@v1.4.0
         with:
           description: latest master branch builds

From ca74f64a39f4d5f189948190b079de54521e5f4f Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:37:06 -0800
Subject: [PATCH 088/140] indention

---
 .github/workflows/auto_tag.yml | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
index bb1ac59ce..f11321b02 100644
--- a/.github/workflows/auto_tag.yml
+++ b/.github/workflows/auto_tag.yml
@@ -11,8 +11,9 @@ jobs:
     steps:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
+
     - name: Latest tag
-        uses: EndBug/latest-tag@v1.4.0
-        with:
-          description: latest master branch builds
-          tag-name: latest
+      uses: EndBug/latest-tag@v1.4.0
+      with:
+        description: latest master branch builds
+        tag-name: latest

From 4d93226f2c250318e1fa23c9f7fae838fd0398e1 Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:39:27 -0800
Subject: [PATCH 089/140] Update auto_tag.yml

---
 .github/workflows/auto_tag.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
index f11321b02..37c11e20a 100644
--- a/.github/workflows/auto_tag.yml
+++ b/.github/workflows/auto_tag.yml
@@ -16,4 +16,4 @@ jobs:
       uses: EndBug/latest-tag@v1.4.0
       with:
         description: latest master branch builds
-        tag-name: latest
+        tag-name: tip

From 21493901953076bc47e57a57e3c20f96ea049617 Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:42:52 -0800
Subject: [PATCH 090/140] Update auto_tag.yml

---
 .github/workflows/auto_tag.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
index 37c11e20a..2f0c2a8e4 100644
--- a/.github/workflows/auto_tag.yml
+++ b/.github/workflows/auto_tag.yml
@@ -16,4 +16,4 @@ jobs:
       uses: EndBug/latest-tag@v1.4.0
       with:
         description: latest master branch builds
-        tag-name: tip
+        tag-name: dev

From f72f037be5d4c35a3cd64fb300eb9a812fd338ef Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:50:47 -0800
Subject: [PATCH 091/140] Delete cleanup.yml

---
 .github/workflows/cleanup.yml | 22 ----------------------
 1 file changed, 22 deletions(-)
 delete mode 100644 .github/workflows/cleanup.yml

diff --git a/.github/workflows/cleanup.yml b/.github/workflows/cleanup.yml
deleted file mode 100644
index d8719c36f..000000000
--- a/.github/workflows/cleanup.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: Cleanup
-
-on:
-  push:
-    branches: [ master ]
-
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-
-    steps:
-
-    - name: Delete old release assets
-      uses: mknejp/delete-release-assets@v1
-      with:
-        token: ${{ github.token }}
-        tag: dev
-        fail-if-no-assets: false 
-        assets: | 
-          weed-*

From a657d0987927aaa1027b01b44bf9b85a0901849b Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:51:11 -0800
Subject: [PATCH 092/140] Update release.yml

---
 .github/workflows/release.yml | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 13714825d..bf9fbe2f1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -24,10 +24,20 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
 
-    - name: Wait for the deletion
-      uses: jakejarvis/wait-action@master
+    - name: Delete old release assets
+      uses: mknejp/delete-release-assets@v1
       with:
-        time: '30s'
+        token: ${{ github.token }}
+        tag: dev
+        fail-if-no-assets: false 
+        assets: | 
+          weed-*
+
+    - name: Latest tag
+      uses: EndBug/latest-tag@v1.4.0
+      with:
+        description: latest master branch builds
+        tag-name: dev
 
     - name: Set BUILD_TIME env
       run: echo BUILD_TIME=$(date -u +%Y-%m-%d-%H-%M) >> ${GITHUB_ENV}

From 3fd164a224f237641db53047505d76f4a9de3a94 Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:51:28 -0800
Subject: [PATCH 093/140] Delete auto_tag.yml

---
 .github/workflows/auto_tag.yml | 19 -------------------
 1 file changed, 19 deletions(-)
 delete mode 100644 .github/workflows/auto_tag.yml

diff --git a/.github/workflows/auto_tag.yml b/.github/workflows/auto_tag.yml
deleted file mode 100644
index 2f0c2a8e4..000000000
--- a/.github/workflows/auto_tag.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-# This is a basic workflow to help you get started with Actions
-
-name: tag
-
-on:
-  push:
-    branches: [ master ]
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-
-    - name: Latest tag
-      uses: EndBug/latest-tag@v1.4.0
-      with:
-        description: latest master branch builds
-        tag-name: dev

From 5579caf5a5605c92bc113969e89006a18af3dd77 Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Wed, 17 Feb 2021 01:54:00 -0800
Subject: [PATCH 094/140] Update release.yml

---
 .github/workflows/release.yml | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bf9fbe2f1..7439fb604 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,12 +33,6 @@ jobs:
         assets: | 
           weed-*
 
-    - name: Latest tag
-      uses: EndBug/latest-tag@v1.4.0
-      with:
-        description: latest master branch builds
-        tag-name: dev
-
     - name: Set BUILD_TIME env
       run: echo BUILD_TIME=$(date -u +%Y-%m-%d-%H-%M) >> ${GITHUB_ENV}
 

From 3f8b0da6772ea99b600303bb1ad3f6430a45290a Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 17 Feb 2021 02:13:50 -0800
Subject: [PATCH 095/140] filer: do not print password on error

fix https://github.com/chrislusf/seaweedfs/issues/1809
---
 weed/filer/mysql/mysql_store.go         | 4 +++-
 weed/filer/mysql2/mysql2_store.go       | 4 +++-
 weed/filer/postgres/postgres_store.go   | 8 ++++++--
 weed/filer/postgres2/postgres2_store.go | 6 +++++-
 4 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/weed/filer/mysql/mysql_store.go b/weed/filer/mysql/mysql_store.go
index 23b3bef11..022a8d72d 100644
--- a/weed/filer/mysql/mysql_store.go
+++ b/weed/filer/mysql/mysql_store.go
@@ -51,8 +51,10 @@ func (store *MysqlStore) initialize(user, password, hostname string, port int, d
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
+	adaptedSqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, "<ADAPTED>", hostname, port, database)
 	if interpolateParams {
 		sqlUrl += "&interpolateParams=true"
+		adaptedSqlUrl += "&interpolateParams=true"
 	}
 
 	var dbErr error
@@ -60,7 +62,7 @@ func (store *MysqlStore) initialize(user, password, hostname string, port int, d
 	if dbErr != nil {
 		store.DB.Close()
 		store.DB = nil
-		return fmt.Errorf("can not connect to %s error:%v", sqlUrl, err)
+		return fmt.Errorf("can not connect to %s error:%v", adaptedSqlUrl, err)
 	}
 
 	store.DB.SetMaxIdleConns(maxIdle)
diff --git a/weed/filer/mysql2/mysql2_store.go b/weed/filer/mysql2/mysql2_store.go
index 2db7a820d..c796cd6aa 100644
--- a/weed/filer/mysql2/mysql2_store.go
+++ b/weed/filer/mysql2/mysql2_store.go
@@ -54,8 +54,10 @@ func (store *MysqlStore2) initialize(createTable, user, password, hostname strin
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
+	adaptedSqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, "<ADAPTED>", hostname, port, database)
 	if interpolateParams {
 		sqlUrl += "&interpolateParams=true"
+		adaptedSqlUrl += "&interpolateParams=true"
 	}
 
 	var dbErr error
@@ -63,7 +65,7 @@ func (store *MysqlStore2) initialize(createTable, user, password, hostname strin
 	if dbErr != nil {
 		store.DB.Close()
 		store.DB = nil
-		return fmt.Errorf("can not connect to %s error:%v", sqlUrl, err)
+		return fmt.Errorf("can not connect to %s error:%v", adaptedSqlUrl, err)
 	}
 
 	store.DB.SetMaxIdleConns(maxIdle)
diff --git a/weed/filer/postgres/postgres_store.go b/weed/filer/postgres/postgres_store.go
index 75d80e44a..9e4ff7c32 100644
--- a/weed/filer/postgres/postgres_store.go
+++ b/weed/filer/postgres/postgres_store.go
@@ -47,28 +47,32 @@ func (store *PostgresStore) initialize(user, password, hostname string, port int
 	store.SupportBucketTable = false
 	store.SqlGenerator = &SqlGenPostgres{
 		CreateTableSqlTemplate: "",
-		DropTableSqlTemplate: `drop table "%s"`,
+		DropTableSqlTemplate:   `drop table "%s"`,
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, sslmode)
 	if user != "" {
 		sqlUrl += " user=" + user
 	}
+	adaptedSqlUrl := sqlUrl
 	if password != "" {
 		sqlUrl += " password=" + password
+		adaptedSqlUrl += " password=ADAPTED"
 	}
 	if database != "" {
 		sqlUrl += " dbname=" + database
+		adaptedSqlUrl += " dbname=" + database
 	}
 	if schema != "" {
 		sqlUrl += " search_path=" + schema
+		adaptedSqlUrl += " search_path=" + schema
 	}
 	var dbErr error
 	store.DB, dbErr = sql.Open("postgres", sqlUrl)
 	if dbErr != nil {
 		store.DB.Close()
 		store.DB = nil
-		return fmt.Errorf("can not connect to %s error:%v", sqlUrl, err)
+		return fmt.Errorf("can not connect to %s error:%v", adaptedSqlUrl, err)
 	}
 
 	store.DB.SetMaxIdleConns(maxIdle)
diff --git a/weed/filer/postgres2/postgres2_store.go b/weed/filer/postgres2/postgres2_store.go
index 44487fd0e..4b5fbc8cf 100644
--- a/weed/filer/postgres2/postgres2_store.go
+++ b/weed/filer/postgres2/postgres2_store.go
@@ -57,21 +57,25 @@ func (store *PostgresStore2) initialize(createTable, user, password, hostname st
 	if user != "" {
 		sqlUrl += " user=" + user
 	}
+	adaptedSqlUrl := sqlUrl
 	if password != "" {
 		sqlUrl += " password=" + password
+		adaptedSqlUrl += " password=ADAPTED"
 	}
 	if database != "" {
 		sqlUrl += " dbname=" + database
+		adaptedSqlUrl += " dbname=" + database
 	}
 	if schema != "" {
 		sqlUrl += " search_path=" + schema
+		adaptedSqlUrl += " search_path=" + schema
 	}
 	var dbErr error
 	store.DB, dbErr = sql.Open("postgres", sqlUrl)
 	if dbErr != nil {
 		store.DB.Close()
 		store.DB = nil
-		return fmt.Errorf("can not connect to %s error:%v", sqlUrl, err)
+		return fmt.Errorf("can not connect to %s error:%v", adaptedSqlUrl, err)
 	}
 
 	store.DB.SetMaxIdleConns(maxIdle)

From 127097cd2b34358cfdee4e595996b46dbfbd5682 Mon Sep 17 00:00:00 2001
From: Konstantin Lebedev <lebedev_k@tochka.com>
Date: Thu, 18 Feb 2021 04:03:42 +0500
Subject: [PATCH 096/140] ceph s3-tests include in the docker compose files

https://github.com/chrislusf/seaweedfs/issues/1810
---
 docker/Dockerfile.s3tests                |  31 +++++++
 docker/Makefile                          |   6 ++
 docker/compose/local-s3tests-compose.yml |  45 ++++++++++
 docker/compose/s3.json                   | 105 +++++++++++++++++++++++
 docker/compose/s3tests.conf              |  70 +++++++++++++++
 5 files changed, 257 insertions(+)
 create mode 100644 docker/Dockerfile.s3tests
 create mode 100644 docker/compose/local-s3tests-compose.yml
 create mode 100644 docker/compose/s3.json
 create mode 100644 docker/compose/s3tests.conf

diff --git a/docker/Dockerfile.s3tests b/docker/Dockerfile.s3tests
new file mode 100644
index 000000000..18d57fad1
--- /dev/null
+++ b/docker/Dockerfile.s3tests
@@ -0,0 +1,31 @@
+FROM ubuntu:20.04
+
+RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get upgrade -y && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+        git \
+        sudo \
+        debianutils \
+        python3-pip \
+        python3-virtualenv \
+        python3-dev \
+        libevent-dev \
+        libffi-dev \
+        libxml2-dev \
+        libxslt-dev \
+        zlib1g-dev && \
+    DEBIAN_FRONTEND=noninteractive apt-get clean && \
+    rm -rf /var/lib/apt/lists/* && \
+    git clone https://github.com/ceph/s3-tests.git /opt/s3-tests
+
+WORKDIR /opt/s3-tests
+RUN ./bootstrap
+
+ENV \
+    NOSETESTS_EXCLUDE="" \
+    NOSETESTS_ATTR="" \
+    NOSETESTS_OPTIONS="" \
+    S3TEST_CONF="/s3test.conf"
+
+ENTRYPOINT ["/bin/bash", "-c"]
+CMD ["exec ./virtualenv/bin/nosetests ${NOSETESTS_OPTIONS-} ${NOSETESTS_ATTR:+-a $NOSETESTS_ATTR} ${NOSETESTS_EXCLUDE:+-e $NOSETESTS_EXCLUDE}"]
\ No newline at end of file
diff --git a/docker/Makefile b/docker/Makefile
index b402147ed..67ee9acdf 100644
--- a/docker/Makefile
+++ b/docker/Makefile
@@ -9,6 +9,9 @@ build:
 	docker build --no-cache -t chrislusf/seaweedfs:local -f Dockerfile.local .
 	rm ./weed
 
+s3tests_build:
+	docker build --no-cache -t chrislusf/ceph-s3-tests:local -f Dockerfile.s3tests .
+
 dev: build
 	docker-compose -f compose/local-dev-compose.yml -p seaweedfs up
 
@@ -30,6 +33,9 @@ cluster: build
 2clusters: build
 	docker-compose -f compose/local-clusters-compose.yml -p seaweedfs up
 
+s3tests: build s3tests_build
+	docker-compose -f compose/local-s3tests-compose.yml -p seaweedfs up
+
 filer_etcd: build
 	docker stack deploy -c compose/swarm-etcd.yml fs
 
diff --git a/docker/compose/local-s3tests-compose.yml b/docker/compose/local-s3tests-compose.yml
new file mode 100644
index 000000000..f78dfb3ad
--- /dev/null
+++ b/docker/compose/local-s3tests-compose.yml
@@ -0,0 +1,45 @@
+version: '2'
+
+services:
+  master:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 9333:9333
+      - 19333:19333
+    command: "master -ip=master -volumeSizeLimitMB=16"
+    environment:
+      WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
+      WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
+  volume:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8080:8080
+      - 18080:18080
+    command: "volume -mserver=master:9333 -port=8080 -ip=volume -preStopSeconds=1"
+    depends_on:
+      - master
+  s3:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8888:8888
+      - 18888:18888
+      - 8000:8000
+    command: 'filer -master="master:9333" -s3 -s3.config=/etc/seaweedfs/s3.json -s3.port=8000'
+    volumes:
+      - ./s3.json:/etc/seaweedfs/s3.json
+    depends_on:
+      - master
+      - volume
+  s3tests:
+    image: chrislusf/ceph-s3-tests:local
+    volumes:
+      - ./s3tests.conf:/opt/s3-tests/s3tests.conf
+    environment:
+      S3TEST_CONF: "s3tests.conf"
+      NOSETESTS_OPTIONS: "--verbose --logging-level=ERROR --with-xunit --failure-detail s3tests_boto3.functional.test_s3"
+      NOSETESTS_ATTR: "!tagging,!fails_on_aws,!encryption,!bucket-policy,!versioning,!fails_on_rgw,!bucket-policy,!fails_with_subdomain,!policy_status,!object-lock,!lifecycle,!cors,!user-policy"
+      NOSETESTS_EXCLUDE: "(bucket_list_delimiter_basic|bucket_listv2_delimiter_basic|bucket_listv2_encoding_basic|bucket_list_encoding_basic|bucket_list_delimiter_prefix|bucket_listv2_delimiter_prefix_ends_with_delimiter|bucket_list_delimiter_prefix_ends_with_delimiter|bucket_list_delimiter_alt|bucket_listv2_delimiter_alt|bucket_list_delimiter_prefix_underscore|bucket_list_delimiter_percentage|bucket_listv2_delimiter_percentage|bucket_list_delimiter_whitespace|bucket_listv2_delimiter_whitespace|bucket_list_delimiter_dot|bucket_listv2_delimiter_dot|bucket_list_delimiter_unreadable|bucket_listv2_delimiter_unreadable|bucket_listv2_fetchowner_defaultempty|bucket_listv2_fetchowner_empty|bucket_list_delimiter_not_skip_special|bucket_list_prefix_delimiter_alt|bucket_listv2_prefix_delimiter_alt|bucket_list_prefix_delimiter_prefix_not_exist|bucket_listv2_prefix_delimiter_prefix_not_exist|bucket_list_prefix_delimiter_delimiter_not_exist|bucket_listv2_prefix_delimiter_delimiter_not_exist|bucket_list_prefix_delimiter_prefix_delimiter_not_exist|bucket_listv2_prefix_delimiter_prefix_delimiter_not_exist|bucket_list_maxkeys_none|bucket_listv2_maxkeys_none|bucket_list_maxkeys_invalid|bucket_listv2_continuationtoken_empty|bucket_list_return_data|bucket_list_objects_anonymous|bucket_listv2_objects_anonymous|bucket_notexist|bucketv2_notexist|bucket_delete_nonempty|bucket_concurrent_set_canned_acl|object_write_to_nonexist_bucket|object_requestid_matches_header_on_error|object_head_zero_bytes|object_write_cache_control|object_write_expires|object_set_get_metadata_none_to_good|object_set_get_metadata_none_to_empty|object_set_get_metadata_overwrite_to_empty|post_object_anonymous_request|post_object_authenticated_request|post_object_authenticated_no_content_type|post_object_authenticated_request_bad_access_key|post_object_set_success_code|post_object_set_invalid_success_code|post_object_upload_larger_than_chunk|post_object_set_key_from_filename|post_object_ignored_header|post_object_case_insensitive_condition_fields|post_object_escaped_field_values|post_object_success_redirect_action|post_object_invalid_signature|post_object_invalid_access_key|post_object_missing_policy_condition|post_object_user_specified_header|post_object_request_missing_policy_specified_field|post_object_expired_policy|post_object_invalid_request_field_value|get_object_ifmatch_failed|get_object_ifunmodifiedsince_good|put_object_ifmatch_failed|object_raw_get|object_raw_get_bucket_gone|object_delete_key_bucket_gone|object_raw_get_bucket_acl|object_raw_get_object_acl|object_raw_authenticated|object_raw_response_headers|object_raw_authenticated_bucket_acl|object_raw_authenticated_object_acl|object_raw_authenticated_bucket_gone|object_raw_get_x_amz_expires_not_expired|object_raw_get_x_amz_expires_out_max_range|object_raw_get_x_amz_expires_out_positive_range|object_anon_put_write_access|object_raw_put_authenticated_expired|bucket_create_naming_bad_short_one|bucket_create_naming_bad_short_two|bucket_create_exists|bucket_get_location|bucket_acl_default|bucket_acl_canned|bucket_acl_canned_publicreadwrite|bucket_acl_canned_authenticatedread|object_acl_default|object_acl_canned_during_create|object_acl_canned|object_acl_canned_publicreadwrite|object_acl_canned_authenticatedread|object_acl_canned_bucketownerread|object_acl_canned_bucketownerfullcontrol|object_acl_full_control_verify_attributes|bucket_acl_canned_private_to_private|bucket_acl_grant_nonexist_user|bucket_acl_no_grants|bucket_acl_grant_email_not_exist|bucket_acl_revoke_all|bucket_recreate_not_overriding|bucket_create_special_key_names|object_copy_zero_size|object_copy_verify_contenttype|object_copy_to_itself|object_copy_to_itself_with_metadata|object_copy_not_owned_bucket|object_copy_not_owned_object_bucket|object_copy_retaining_metadata|object_copy_replacing_metadata|multipart_upload_empty|multipart_copy_invalid_range|multipart_copy_special_names|multipart_upload_resend_part|multipart_upload_size_too_small|abort_multipart_upload_not_found|multipart_upload_missing_part|multipart_upload_incorrect_etag|100_continue|ranged_request_invalid_range|ranged_request_empty_object|access_bucket)"
+    depends_on:
+      - master
+      - volume
+      - s3
\ No newline at end of file
diff --git a/docker/compose/s3.json b/docker/compose/s3.json
new file mode 100644
index 000000000..64dedb681
--- /dev/null
+++ b/docker/compose/s3.json
@@ -0,0 +1,105 @@
+{
+  "identities": [
+    {
+      "name": "anonymous",
+      "actions": [
+        "Read"
+      ]
+    },
+    {
+      "name": "some_admin_user",
+      "credentials": [
+        {
+          "accessKey": "some_access_key1",
+          "secretKey": "some_secret_key1"
+        }
+      ],
+      "actions": [
+        "Admin",
+        "Read",
+        "List",
+        "Tagging",
+        "Write"
+      ]
+    },
+    {
+      "name": "s3_tests",
+      "credentials": [
+        {
+          "accessKey": "ABCDEFGHIJKLMNOPQRST",
+          "secretKey": "abcdefghijklmnopqrstuvwxyzabcdefghijklmn"
+        },
+        {
+          "accessKey": "0555b35654ad1656d804",
+          "secretKey": "h7GhxuBLTrlhVUyxSPUKUV8r/2EI4ngqJxD7iBdBYLhwluN30JaT3Q=="
+        }
+      ],
+      "actions": [
+        "Admin",
+        "Read",
+        "List",
+        "Tagging",
+        "Write"
+      ]
+    },
+    {
+      "name": "s3_tests_alt",
+      "credentials": [
+        {
+          "accessKey": "NOPQRSTUVWXYZABCDEFG",
+          "secretKey": "nopqrstuvwxyzabcdefghijklmnabcdefghijklm"
+        }
+      ],
+      "actions": [
+        "Admin",
+        "Read",
+        "List",
+        "Tagging",
+        "Write"
+      ]
+    },
+    {
+      "name": "s3_tests_tenant",
+      "credentials": [
+        {
+          "accessKey": "HIJKLMNOPQRSTUVWXYZA",
+          "secretKey": "opqrstuvwxyzabcdefghijklmnopqrstuvwxyzab"
+        }
+      ],
+      "actions": [
+        "Admin",
+        "Read",
+        "List",
+        "Tagging",
+        "Write"
+      ]
+    },
+    {
+      "name": "some_read_only_user",
+      "credentials": [
+        {
+          "accessKey": "some_access_key2",
+          "secretKey": "some_secret_key2"
+        }
+      ],
+      "actions": [
+        "Read"
+      ]
+    },
+    {
+      "name": "some_normal_user",
+      "credentials": [
+        {
+          "accessKey": "some_access_key3",
+          "secretKey": "some_secret_key3"
+        }
+      ],
+      "actions": [
+        "Read",
+        "List",
+        "Tagging",
+        "Write"
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/docker/compose/s3tests.conf b/docker/compose/s3tests.conf
new file mode 100644
index 000000000..68d9ddeb7
--- /dev/null
+++ b/docker/compose/s3tests.conf
@@ -0,0 +1,70 @@
+[DEFAULT]
+## this section is just used for host, port and bucket_prefix
+
+# host set for rgw in vstart.sh
+host = s3
+
+# port set for rgw in vstart.sh
+port = 8000
+
+## say "False" to disable TLS
+is_secure = False
+
+[fixtures]
+## all the buckets created will start with this prefix;
+## {random} will be filled with random characters to pad
+## the prefix to 30 characters long, and avoid collisions
+bucket prefix = yournamehere-{random}-
+
+[s3 main]
+# main display_name set in vstart.sh
+display_name = M. Tester
+
+# main user_idname set in vstart.sh
+user_id = testid
+
+# main email set in vstart.sh
+email = tester@ceph.com
+
+# zonegroup api_name for bucket location
+api_name = default
+
+## main AWS access key
+access_key = 0555b35654ad1656d804
+
+## main AWS secret key
+secret_key = h7GhxuBLTrlhVUyxSPUKUV8r/2EI4ngqJxD7iBdBYLhwluN30JaT3Q==
+
+## replace with key id obtained when secret is created, or delete if KMS not tested
+#kms_keyid = 01234567-89ab-cdef-0123-456789abcdef
+
+[s3 alt]
+# alt display_name set in vstart.sh
+display_name = john.doe
+## alt email set in vstart.sh
+email = john.doe@example.com
+
+# alt user_id set in vstart.sh
+user_id = 56789abcdef0123456789abcdef0123456789abcdef0123456789abcdef01234
+
+# alt AWS access key set in vstart.sh
+access_key = NOPQRSTUVWXYZABCDEFG
+
+# alt AWS secret key set in vstart.sh
+secret_key = nopqrstuvwxyzabcdefghijklmnabcdefghijklm
+
+[s3 tenant]
+# tenant display_name set in vstart.sh
+display_name = testx$tenanteduser
+
+# tenant user_id set in vstart.sh
+user_id = 9876543210abcdef0123456789abcdef0123456789abcdef0123456789abcdef
+
+# tenant AWS secret key set in vstart.sh
+access_key = HIJKLMNOPQRSTUVWXYZA
+
+# tenant AWS secret key set in vstart.sh
+secret_key = opqrstuvwxyzabcdefghijklmnopqrstuvwxyzab
+
+# tenant email set in vstart.sh
+email = tenanteduser@example.com
\ No newline at end of file

From aa17311063c0303c35db1cd450afe1bd609f7da5 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 17 Feb 2021 20:54:53 -0800
Subject: [PATCH 097/140] s3: set filename when uploading file chunks

---
 weed/server/filer_server_handlers_write_autochunk.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
index 145989445..d3ce7e605 100644
--- a/weed/server/filer_server_handlers_write_autochunk.go
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -104,7 +104,7 @@ func (fs *FilerServer) doPostAutoChunk(ctx context.Context, w http.ResponseWrite
 
 func (fs *FilerServer) doPutAutoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request, chunkSize int32, so *operation.StorageOption) (filerResult *FilerPostResult, md5bytes []byte, replyerr error) {
 
-	fileName := ""
+	fileName := path.Base(r.URL.Path)
 	contentType := r.Header.Get("Content-Type")
 	if contentType == "application/octet-stream" {
 		contentType = ""

From dd9f3a01049bef33046d3728d82b25b67b8533ac Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 17 Feb 2021 20:55:11 -0800
Subject: [PATCH 098/140] add sleep between upload retries

---
 weed/operation/upload_content.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index 7e2a6dcd2..b24514cda 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -100,6 +100,7 @@ func retriedUploadData(uploadUrl string, filename string, cipher bool, data []by
 		} else {
 			glog.Warningf("uploading to %s: %v", uploadUrl, err)
 		}
+		time.Sleep(time.Millisecond * time.Duration(237 * (i+1)))
 	}
 	return
 }

From 6daa932f5c1571cc60cf89014cf17810d756dd6b Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 17 Feb 2021 20:55:55 -0800
Subject: [PATCH 099/140] refactoring to get master function, instead of
 passing master values directly

this will enable retrying later
---
 unmaintained/volume_tailer/volume_tailer.go |  2 +-
 weed/command/backup.go                      |  2 +-
 weed/command/benchmark.go                   |  4 ++--
 weed/command/download.go                    | 12 +++++------
 weed/command/filer_copy.go                  |  4 +++-
 weed/command/upload.go                      |  4 ++--
 weed/filer/filer_notify_append.go           |  2 +-
 weed/operation/assign_file_id.go            |  4 ++--
 weed/operation/chunked_file.go              |  8 ++++---
 weed/operation/delete_content.go            |  4 ++--
 weed/operation/lookup.go                    | 15 +++++++------
 weed/operation/submit.go                    | 24 +++++++++++----------
 weed/operation/tail_volume.go               |  4 ++--
 weed/server/common.go                       |  4 ++--
 weed/server/filer_grpc_server.go            |  2 +-
 weed/server/filer_server_handlers_write.go  |  2 +-
 weed/server/master_server_handlers_admin.go |  4 ++--
 weed/server/volume_server_handlers_read.go  |  2 +-
 weed/server/volume_server_handlers_write.go |  6 +++---
 weed/topology/store_replicate.go            | 12 +++++------
 20 files changed, 64 insertions(+), 57 deletions(-)

diff --git a/unmaintained/volume_tailer/volume_tailer.go b/unmaintained/volume_tailer/volume_tailer.go
index e93f1cc13..32da2e6ab 100644
--- a/unmaintained/volume_tailer/volume_tailer.go
+++ b/unmaintained/volume_tailer/volume_tailer.go
@@ -37,7 +37,7 @@ func main() {
 		sinceTimeNs = time.Now().Add(-*rewindDuration).UnixNano()
 	}
 
-	err := operation.TailVolume(*master, grpcDialOption, vid, uint64(sinceTimeNs), *timeoutSeconds, func(n *needle.Needle) (err error) {
+	err := operation.TailVolume(func()string{return *master}, grpcDialOption, vid, uint64(sinceTimeNs), *timeoutSeconds, func(n *needle.Needle) (err error) {
 		if n.Size == 0 {
 			println("-", n.String())
 			return nil
diff --git a/weed/command/backup.go b/weed/command/backup.go
index 4c37c2763..b9973c6a9 100644
--- a/weed/command/backup.go
+++ b/weed/command/backup.go
@@ -72,7 +72,7 @@ func runBackup(cmd *Command, args []string) bool {
 	vid := needle.VolumeId(*s.volumeId)
 
 	// find volume location, replication, ttl info
-	lookup, err := operation.Lookup(*s.master, vid.String())
+	lookup, err := operation.Lookup(func()string{return *s.master}, vid.String())
 	if err != nil {
 		fmt.Printf("Error looking up volume %d: %v\n", vid, err)
 		return true
diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index 370ec9eaf..e1b6d8d6c 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -238,12 +238,12 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
 			Replication: *b.replication,
 			DiskType:    *b.diskType,
 		}
-		if assignResult, err := operation.Assign(b.masterClient.GetMaster(), b.grpcDialOption, ar); err == nil {
+		if assignResult, err := operation.Assign(b.masterClient.GetMaster, b.grpcDialOption, ar); err == nil {
 			fp.Server, fp.Fid, fp.Collection = assignResult.Url, assignResult.Fid, *b.collection
 			if !isSecure && assignResult.Auth != "" {
 				isSecure = true
 			}
-			if _, err := fp.Upload(0, b.masterClient.GetMaster(), false, assignResult.Auth, b.grpcDialOption); err == nil {
+			if _, err := fp.Upload(0, b.masterClient.GetMaster, false, assignResult.Auth, b.grpcDialOption); err == nil {
 				if random.Intn(100) < *b.deletePercentage {
 					s.total++
 					delayedDeleteChan <- &delayedFile{time.Now().Add(time.Second), fp}
diff --git a/weed/command/download.go b/weed/command/download.go
index f7588fbf0..5da1f57d9 100644
--- a/weed/command/download.go
+++ b/weed/command/download.go
@@ -44,15 +44,15 @@ var cmdDownload = &Command{
 
 func runDownload(cmd *Command, args []string) bool {
 	for _, fid := range args {
-		if e := downloadToFile(*d.server, fid, util.ResolvePath(*d.dir)); e != nil {
+		if e := downloadToFile(func()string{return *d.server}, fid, util.ResolvePath(*d.dir)); e != nil {
 			fmt.Println("Download Error: ", fid, e)
 		}
 	}
 	return true
 }
 
-func downloadToFile(server, fileId, saveDir string) error {
-	fileUrl, lookupError := operation.LookupFileId(server, fileId)
+func downloadToFile(masterFn operation.GetMasterFn, fileId, saveDir string) error {
+	fileUrl, lookupError := operation.LookupFileId(masterFn, fileId)
 	if lookupError != nil {
 		return lookupError
 	}
@@ -83,7 +83,7 @@ func downloadToFile(server, fileId, saveDir string) error {
 		fids := strings.Split(string(content), "\n")
 		for _, partId := range fids {
 			var n int
-			_, part, err := fetchContent(*d.server, partId)
+			_, part, err := fetchContent(masterFn, partId)
 			if err == nil {
 				n, err = f.Write(part)
 			}
@@ -103,8 +103,8 @@ func downloadToFile(server, fileId, saveDir string) error {
 	return nil
 }
 
-func fetchContent(server string, fileId string) (filename string, content []byte, e error) {
-	fileUrl, lookupError := operation.LookupFileId(server, fileId)
+func fetchContent(masterFn operation.GetMasterFn, fileId string) (filename string, content []byte, e error) {
+	fileUrl, lookupError := operation.LookupFileId(masterFn, fileId)
 	if lookupError != nil {
 		return "", nil, lookupError
 	}
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 20f00a3eb..bf64e72b3 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -463,7 +463,9 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 		for _, chunk := range chunks {
 			fileIds = append(fileIds, chunk.FileId)
 		}
-		operation.DeleteFiles(copy.masters[0], false, worker.options.grpcDialOption, fileIds)
+		operation.DeleteFiles(func() string {
+			return copy.masters[0]
+		}, false, worker.options.grpcDialOption, fileIds)
 		return uploadError
 	}
 
diff --git a/weed/command/upload.go b/weed/command/upload.go
index 85d6e5c09..effcf8836 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -96,7 +96,7 @@ func runUpload(cmd *Command, args []string) bool {
 					if e != nil {
 						return e
 					}
-					results, e := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
+					results, e := operation.SubmitFiles(func()string {return *upload.master}, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
 					bytes, _ := json.Marshal(results)
 					fmt.Println(string(bytes))
 					if e != nil {
@@ -113,7 +113,7 @@ func runUpload(cmd *Command, args []string) bool {
 		if e != nil {
 			fmt.Println(e.Error())
 		}
-		results, _ := operation.SubmitFiles(*upload.master, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
+		results, _ := operation.SubmitFiles(func()string {return *upload.master}, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
 		bytes, _ := json.Marshal(results)
 		fmt.Println(string(bytes))
 	}
diff --git a/weed/filer/filer_notify_append.go b/weed/filer/filer_notify_append.go
index 09c39dd89..d441bbbc9 100644
--- a/weed/filer/filer_notify_append.go
+++ b/weed/filer/filer_notify_append.go
@@ -56,7 +56,7 @@ func (f *Filer) assignAndUpload(targetFile string, data []byte) (*operation.Assi
 		WritableVolumeCount: rule.VolumeGrowthCount,
 	}
 
-	assignResult, err := operation.Assign(f.GetMaster(), f.GrpcDialOption, assignRequest)
+	assignResult, err := operation.Assign(f.GetMaster, f.GrpcDialOption, assignRequest)
 	if err != nil {
 		return nil, nil, fmt.Errorf("AssignVolume: %v", err)
 	}
diff --git a/weed/operation/assign_file_id.go b/weed/operation/assign_file_id.go
index b2fcf0c96..cc1359961 100644
--- a/weed/operation/assign_file_id.go
+++ b/weed/operation/assign_file_id.go
@@ -34,7 +34,7 @@ type AssignResult struct {
 	Auth      security.EncodedJwt `json:"auth,omitempty"`
 }
 
-func Assign(server string, grpcDialOption grpc.DialOption, primaryRequest *VolumeAssignRequest, alternativeRequests ...*VolumeAssignRequest) (*AssignResult, error) {
+func Assign(masterFn GetMasterFn, grpcDialOption grpc.DialOption, primaryRequest *VolumeAssignRequest, alternativeRequests ...*VolumeAssignRequest) (*AssignResult, error) {
 
 	var requests []*VolumeAssignRequest
 	requests = append(requests, primaryRequest)
@@ -48,7 +48,7 @@ func Assign(server string, grpcDialOption grpc.DialOption, primaryRequest *Volum
 			continue
 		}
 
-		lastError = WithMasterServerClient(server, grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
+		lastError = WithMasterServerClient(masterFn(), grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
 
 			req := &master_pb.AssignRequest{
 				Count:               request.Count,
diff --git a/weed/operation/chunked_file.go b/weed/operation/chunked_file.go
index 1bac028ff..8506e0518 100644
--- a/weed/operation/chunked_file.go
+++ b/weed/operation/chunked_file.go
@@ -72,12 +72,12 @@ func (cm *ChunkManifest) Marshal() ([]byte, error) {
 	return json.Marshal(cm)
 }
 
-func (cm *ChunkManifest) DeleteChunks(master string, usePublicUrl bool, grpcDialOption grpc.DialOption) error {
+func (cm *ChunkManifest) DeleteChunks(masterFn GetMasterFn, usePublicUrl bool, grpcDialOption grpc.DialOption) error {
 	var fileIds []string
 	for _, ci := range cm.Chunks {
 		fileIds = append(fileIds, ci.Fid)
 	}
-	results, err := DeleteFiles(master, usePublicUrl, grpcDialOption, fileIds)
+	results, err := DeleteFiles(masterFn, usePublicUrl, grpcDialOption, fileIds)
 	if err != nil {
 		glog.V(0).Infof("delete %+v: %v", fileIds, err)
 		return fmt.Errorf("chunk delete: %v", err)
@@ -174,7 +174,9 @@ func (cf *ChunkedFileReader) WriteTo(w io.Writer) (n int64, err error) {
 	for ; chunkIndex < len(cf.chunkList); chunkIndex++ {
 		ci := cf.chunkList[chunkIndex]
 		// if we need read date from local volume server first?
-		fileUrl, lookupError := LookupFileId(cf.master, ci.Fid)
+		fileUrl, lookupError := LookupFileId(func() string {
+			return cf.master
+		}, ci.Fid)
 		if lookupError != nil {
 			return n, lookupError
 		}
diff --git a/weed/operation/delete_content.go b/weed/operation/delete_content.go
index 65baaddf2..8f87882b1 100644
--- a/weed/operation/delete_content.go
+++ b/weed/operation/delete_content.go
@@ -28,10 +28,10 @@ func ParseFileId(fid string) (vid string, key_cookie string, err error) {
 }
 
 // DeleteFiles batch deletes a list of fileIds
-func DeleteFiles(master string, usePublicUrl bool, grpcDialOption grpc.DialOption, fileIds []string) ([]*volume_server_pb.DeleteResult, error) {
+func DeleteFiles(masterFn GetMasterFn, usePublicUrl bool, grpcDialOption grpc.DialOption, fileIds []string) ([]*volume_server_pb.DeleteResult, error) {
 
 	lookupFunc := func(vids []string) (results map[string]LookupResult, err error) {
-		results, err = LookupVolumeIds(master, grpcDialOption, vids)
+		results, err = LookupVolumeIds(masterFn, grpcDialOption, vids)
 		if err == nil && usePublicUrl {
 			for _, result := range results {
 				for _, loc := range result.Locations {
diff --git a/weed/operation/lookup.go b/weed/operation/lookup.go
index d0773e7fd..0372e47b0 100644
--- a/weed/operation/lookup.go
+++ b/weed/operation/lookup.go
@@ -33,10 +33,10 @@ var (
 	vc VidCache // caching of volume locations, re-check if after 10 minutes
 )
 
-func Lookup(server string, vid string) (ret *LookupResult, err error) {
+func Lookup(masterFn GetMasterFn, vid string) (ret *LookupResult, err error) {
 	locations, cache_err := vc.Get(vid)
 	if cache_err != nil {
-		if ret, err = do_lookup(server, vid); err == nil {
+		if ret, err = do_lookup(masterFn, vid); err == nil {
 			vc.Set(vid, ret.Locations, 10*time.Minute)
 		}
 	} else {
@@ -45,9 +45,10 @@ func Lookup(server string, vid string) (ret *LookupResult, err error) {
 	return
 }
 
-func do_lookup(server string, vid string) (*LookupResult, error) {
+func do_lookup(masterFn GetMasterFn, vid string) (*LookupResult, error) {
 	values := make(url.Values)
 	values.Add("volumeId", vid)
+	server := masterFn()
 	jsonBlob, err := util.Post("http://"+server+"/dir/lookup", values)
 	if err != nil {
 		return nil, err
@@ -63,12 +64,12 @@ func do_lookup(server string, vid string) (*LookupResult, error) {
 	return &ret, nil
 }
 
-func LookupFileId(server string, fileId string) (fullUrl string, err error) {
+func LookupFileId(masterFn GetMasterFn, fileId string) (fullUrl string, err error) {
 	parts := strings.Split(fileId, ",")
 	if len(parts) != 2 {
 		return "", errors.New("Invalid fileId " + fileId)
 	}
-	lookup, lookupError := Lookup(server, parts[0])
+	lookup, lookupError := Lookup(masterFn, parts[0])
 	if lookupError != nil {
 		return "", lookupError
 	}
@@ -79,7 +80,7 @@ func LookupFileId(server string, fileId string) (fullUrl string, err error) {
 }
 
 // LookupVolumeIds find volume locations by cache and actual lookup
-func LookupVolumeIds(server string, grpcDialOption grpc.DialOption, vids []string) (map[string]LookupResult, error) {
+func LookupVolumeIds(masterFn GetMasterFn, grpcDialOption grpc.DialOption, vids []string) (map[string]LookupResult, error) {
 	ret := make(map[string]LookupResult)
 	var unknown_vids []string
 
@@ -99,7 +100,7 @@ func LookupVolumeIds(server string, grpcDialOption grpc.DialOption, vids []strin
 
 	//only query unknown_vids
 
-	err := WithMasterServerClient(server, grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
+	err := WithMasterServerClient(masterFn(), grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
 
 		req := &master_pb.LookupVolumeRequest{
 			VolumeIds: unknown_vids,
diff --git a/weed/operation/submit.go b/weed/operation/submit.go
index c34b33577..87c5e4279 100644
--- a/weed/operation/submit.go
+++ b/weed/operation/submit.go
@@ -39,7 +39,9 @@ type SubmitResult struct {
 	Error    string `json:"error,omitempty"`
 }
 
-func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart, replication string, collection string, dataCenter string, ttl string, diskType string, maxMB int, usePublicUrl bool) ([]SubmitResult, error) {
+type GetMasterFn func() string
+
+func SubmitFiles(masterFn GetMasterFn, grpcDialOption grpc.DialOption, files []FilePart, replication string, collection string, dataCenter string, ttl string, diskType string, maxMB int, usePublicUrl bool) ([]SubmitResult, error) {
 	results := make([]SubmitResult, len(files))
 	for index, file := range files {
 		results[index].FileName = file.FileName
@@ -52,7 +54,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		Ttl:         ttl,
 		DiskType:    diskType,
 	}
-	ret, err := Assign(master, grpcDialOption, ar)
+	ret, err := Assign(masterFn, grpcDialOption, ar)
 	if err != nil {
 		for index := range files {
 			results[index].Error = err.Error()
@@ -73,7 +75,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 		file.DataCenter = dataCenter
 		file.Ttl = ttl
 		file.DiskType = diskType
-		results[index].Size, err = file.Upload(maxMB, master, usePublicUrl, ret.Auth, grpcDialOption)
+		results[index].Size, err = file.Upload(maxMB, masterFn, usePublicUrl, ret.Auth, grpcDialOption)
 		if err != nil {
 			results[index].Error = err.Error()
 		}
@@ -116,7 +118,7 @@ func newFilePart(fullPathFilename string) (ret FilePart, err error) {
 	return ret, nil
 }
 
-func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt security.EncodedJwt, grpcDialOption grpc.DialOption) (retSize uint32, err error) {
+func (fi FilePart) Upload(maxMB int, masterFn GetMasterFn, usePublicUrl bool, jwt security.EncodedJwt, grpcDialOption grpc.DialOption) (retSize uint32, err error) {
 	fileUrl := "http://" + fi.Server + "/" + fi.Fid
 	if fi.ModTime != 0 {
 		fileUrl += "?ts=" + strconv.Itoa(int(fi.ModTime))
@@ -148,7 +150,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 				Ttl:         fi.Ttl,
 				DiskType:    fi.DiskType,
 			}
-			ret, err = Assign(master, grpcDialOption, ar)
+			ret, err = Assign(masterFn, grpcDialOption, ar)
 			if err != nil {
 				return
 			}
@@ -162,10 +164,10 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 					Ttl:         fi.Ttl,
 					DiskType:    fi.DiskType,
 				}
-				ret, err = Assign(master, grpcDialOption, ar)
+				ret, err = Assign(masterFn, grpcDialOption, ar)
 				if err != nil {
 					// delete all uploaded chunks
-					cm.DeleteChunks(master, usePublicUrl, grpcDialOption)
+					cm.DeleteChunks(masterFn, usePublicUrl, grpcDialOption)
 					return
 				}
 				id = ret.Fid
@@ -182,11 +184,11 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 			count, e := upload_one_chunk(
 				baseName+"-"+strconv.FormatInt(i+1, 10),
 				io.LimitReader(fi.Reader, chunkSize),
-				master, fileUrl,
+				masterFn, fileUrl,
 				ret.Auth)
 			if e != nil {
 				// delete all uploaded chunks
-				cm.DeleteChunks(master, usePublicUrl, grpcDialOption)
+				cm.DeleteChunks(masterFn, usePublicUrl, grpcDialOption)
 				return 0, e
 			}
 			cm.Chunks = append(cm.Chunks,
@@ -201,7 +203,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 		err = upload_chunked_file_manifest(fileUrl, &cm, jwt)
 		if err != nil {
 			// delete all uploaded chunks
-			cm.DeleteChunks(master, usePublicUrl, grpcDialOption)
+			cm.DeleteChunks(masterFn, usePublicUrl, grpcDialOption)
 		}
 	} else {
 		ret, e, _ := Upload(fileUrl, baseName, false, fi.Reader, false, fi.MimeType, nil, jwt)
@@ -213,7 +215,7 @@ func (fi FilePart) Upload(maxMB int, master string, usePublicUrl bool, jwt secur
 	return
 }
 
-func upload_one_chunk(filename string, reader io.Reader, master,
+func upload_one_chunk(filename string, reader io.Reader, masterFn GetMasterFn,
 	fileUrl string, jwt security.EncodedJwt,
 ) (size uint32, e error) {
 	glog.V(4).Info("Uploading part ", filename, " to ", fileUrl, "...")
diff --git a/weed/operation/tail_volume.go b/weed/operation/tail_volume.go
index a15c21ae4..045948274 100644
--- a/weed/operation/tail_volume.go
+++ b/weed/operation/tail_volume.go
@@ -11,9 +11,9 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 )
 
-func TailVolume(master string, grpcDialOption grpc.DialOption, vid needle.VolumeId, sinceNs uint64, timeoutSeconds int, fn func(n *needle.Needle) error) error {
+func TailVolume(masterFn GetMasterFn, grpcDialOption grpc.DialOption, vid needle.VolumeId, sinceNs uint64, timeoutSeconds int, fn func(n *needle.Needle) error) error {
 	// find volume location, replication, ttl info
-	lookup, err := Lookup(master, vid.String())
+	lookup, err := Lookup(masterFn, vid.String())
 	if err != nil {
 		return fmt.Errorf("look up volume %d: %v", vid, err)
 	}
diff --git a/weed/server/common.go b/weed/server/common.go
index 7d32d6a9a..9001a3b33 100644
--- a/weed/server/common.go
+++ b/weed/server/common.go
@@ -100,7 +100,7 @@ func debug(params ...interface{}) {
 	glog.V(4).Infoln(params...)
 }
 
-func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl string, grpcDialOption grpc.DialOption) {
+func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterFn operation.GetMasterFn, grpcDialOption grpc.DialOption) {
 	m := make(map[string]interface{})
 	if r.Method != "POST" {
 		writeJsonError(w, r, http.StatusMethodNotAllowed, errors.New("Only submit via POST!"))
@@ -133,7 +133,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
 		Ttl:         r.FormValue("ttl"),
 		DiskType:    r.FormValue("disk"),
 	}
-	assignResult, ae := operation.Assign(masterUrl, grpcDialOption, ar)
+	assignResult, ae := operation.Assign(masterFn, grpcDialOption, ar)
 	if ae != nil {
 		writeJsonError(w, r, http.StatusInternalServerError, ae)
 		return
diff --git a/weed/server/filer_grpc_server.go b/weed/server/filer_grpc_server.go
index 04145f2f9..a4bb721ef 100644
--- a/weed/server/filer_grpc_server.go
+++ b/weed/server/filer_grpc_server.go
@@ -337,7 +337,7 @@ func (fs *FilerServer) AssignVolume(ctx context.Context, req *filer_pb.AssignVol
 
 	assignRequest, altRequest := so.ToAssignRequests(int(req.Count))
 
-	assignResult, err := operation.Assign(fs.filer.GetMaster(), fs.grpcDialOption, assignRequest, altRequest)
+	assignResult, err := operation.Assign(fs.filer.GetMaster, fs.grpcDialOption, assignRequest, altRequest)
 	if err != nil {
 		glog.V(3).Infof("AssignVolume: %v", err)
 		return &filer_pb.AssignVolumeResponse{Error: fmt.Sprintf("assign volume: %v", err)}, nil
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index 28dff07c6..0ce3e4a58 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -37,7 +37,7 @@ func (fs *FilerServer) assignNewFileInfo(so *operation.StorageOption) (fileId, u
 
 	ar, altRequest := so.ToAssignRequests(1)
 
-	assignResult, ae := operation.Assign(fs.filer.GetMaster(), fs.grpcDialOption, ar, altRequest)
+	assignResult, ae := operation.Assign(fs.filer.GetMaster, fs.grpcDialOption, ar, altRequest)
 	if ae != nil {
 		glog.Errorf("failing to assign a file id: %v", ae)
 		err = ae
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index e68dafc5a..4a77d24b5 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -125,13 +125,13 @@ func (ms *MasterServer) selfUrl(r *http.Request) string {
 }
 func (ms *MasterServer) submitFromMasterServerHandler(w http.ResponseWriter, r *http.Request) {
 	if ms.Topo.IsLeader() {
-		submitForClientHandler(w, r, ms.selfUrl(r), ms.grpcDialOption)
+		submitForClientHandler(w, r, func()string{return ms.selfUrl(r)}, ms.grpcDialOption)
 	} else {
 		masterUrl, err := ms.Topo.Leader()
 		if err != nil {
 			writeJsonError(w, r, http.StatusInternalServerError, err)
 		} else {
-			submitForClientHandler(w, r, masterUrl, ms.grpcDialOption)
+			submitForClientHandler(w, r, func()string{return masterUrl}, ms.grpcDialOption)
 		}
 	}
 }
diff --git a/weed/server/volume_server_handlers_read.go b/weed/server/volume_server_handlers_read.go
index 1cd4ee21d..2a82fc1b1 100644
--- a/weed/server/volume_server_handlers_read.go
+++ b/weed/server/volume_server_handlers_read.go
@@ -63,7 +63,7 @@ func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 			w.WriteHeader(http.StatusNotFound)
 			return
 		}
-		lookupResult, err := operation.Lookup(vs.GetMaster(), volumeId.String())
+		lookupResult, err := operation.Lookup(vs.GetMaster, volumeId.String())
 		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
 		if err == nil && len(lookupResult.Locations) > 0 {
 			u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations[0].PublicUrl))
diff --git a/weed/server/volume_server_handlers_write.go b/weed/server/volume_server_handlers_write.go
index 01a77b901..602b147e1 100644
--- a/weed/server/volume_server_handlers_write.go
+++ b/weed/server/volume_server_handlers_write.go
@@ -50,7 +50,7 @@ func (vs *VolumeServer) PostHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	ret := operation.UploadResult{}
-	isUnchanged, writeError := topology.ReplicatedWrite(vs.GetMaster(), vs.store, volumeId, reqNeedle, r)
+	isUnchanged, writeError := topology.ReplicatedWrite(vs.GetMaster, vs.store, volumeId, reqNeedle, r)
 
 	// http 204 status code does not allow body
 	if writeError == nil && isUnchanged {
@@ -128,7 +128,7 @@ func (vs *VolumeServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		// make sure all chunks had deleted before delete manifest
-		if e := chunkManifest.DeleteChunks(vs.GetMaster(), false, vs.grpcDialOption); e != nil {
+		if e := chunkManifest.DeleteChunks(vs.GetMaster, false, vs.grpcDialOption); e != nil {
 			writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("Delete chunks error: %v", e))
 			return
 		}
@@ -143,7 +143,7 @@ func (vs *VolumeServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	_, err := topology.ReplicatedDelete(vs.GetMaster(), vs.store, volumeId, n, r)
+	_, err := topology.ReplicatedDelete(vs.GetMaster, vs.store, volumeId, n, r)
 
 	writeDeleteResult(err, count, w, r)
 
diff --git a/weed/topology/store_replicate.go b/weed/topology/store_replicate.go
index 6b4076913..ea0a8c968 100644
--- a/weed/topology/store_replicate.go
+++ b/weed/topology/store_replicate.go
@@ -18,7 +18,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
-func ReplicatedWrite(masterNode string, s *storage.Store, volumeId needle.VolumeId, n *needle.Needle, r *http.Request) (isUnchanged bool, err error) {
+func ReplicatedWrite(masterFn operation.GetMasterFn, s *storage.Store, volumeId needle.VolumeId, n *needle.Needle, r *http.Request) (isUnchanged bool, err error) {
 
 	//check JWT
 	jwt := security.GetJwt(r)
@@ -27,7 +27,7 @@ func ReplicatedWrite(masterNode string, s *storage.Store, volumeId needle.Volume
 	var remoteLocations []operation.Location
 	if r.FormValue("type") != "replicate" {
 		// this is the initial request
-		remoteLocations, err = getWritableRemoteReplications(s, volumeId, masterNode)
+		remoteLocations, err = getWritableRemoteReplications(s, volumeId, masterFn)
 		if err != nil {
 			glog.V(0).Infoln(err)
 			return
@@ -92,7 +92,7 @@ func ReplicatedWrite(masterNode string, s *storage.Store, volumeId needle.Volume
 	return
 }
 
-func ReplicatedDelete(masterNode string, store *storage.Store,
+func ReplicatedDelete(masterFn operation.GetMasterFn, store *storage.Store,
 	volumeId needle.VolumeId, n *needle.Needle,
 	r *http.Request) (size types.Size, err error) {
 
@@ -101,7 +101,7 @@ func ReplicatedDelete(masterNode string, store *storage.Store,
 
 	var remoteLocations []operation.Location
 	if r.FormValue("type") != "replicate" {
-		remoteLocations, err = getWritableRemoteReplications(store, volumeId, masterNode)
+		remoteLocations, err = getWritableRemoteReplications(store, volumeId, masterFn)
 		if err != nil {
 			glog.V(0).Infoln(err)
 			return
@@ -161,7 +161,7 @@ func distributedOperation(locations []operation.Location, store *storage.Store,
 	return ret.Error()
 }
 
-func getWritableRemoteReplications(s *storage.Store, volumeId needle.VolumeId, masterNode string) (
+func getWritableRemoteReplications(s *storage.Store, volumeId needle.VolumeId, masterFn operation.GetMasterFn) (
 	remoteLocations []operation.Location, err error) {
 
 	v := s.GetVolume(volumeId)
@@ -170,7 +170,7 @@ func getWritableRemoteReplications(s *storage.Store, volumeId needle.VolumeId, m
 	}
 
 	// not on local store, or has replications
-	lookupResult, lookupErr := operation.Lookup(masterNode, volumeId.String())
+	lookupResult, lookupErr := operation.Lookup(masterFn, volumeId.String())
 	if lookupErr == nil {
 		selfUrl := s.Ip + ":" + strconv.Itoa(s.Port)
 		for _, location := range lookupResult.Locations {

From 3575d41009e4367658e75e6ae780c6260b80daf9 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 17 Feb 2021 20:57:08 -0800
Subject: [PATCH 100/140] go fmt

---
 weed/command/backup.go                      |  2 +-
 weed/command/download.go                    |  2 +-
 weed/command/upload.go                      |  4 ++--
 weed/filer/mysql/mysql_store.go             |  2 +-
 weed/filer/postgres/postgres_sql_gen.go     |  6 +++---
 weed/filer/postgres2/postgres2_store.go     |  2 +-
 weed/operation/upload_content.go            |  2 +-
 weed/server/master_server_handlers_admin.go |  4 ++--
 weed/server/volume_grpc_client_to_master.go | 16 ++++++++--------
 weed/shell/command_ec_test.go               |  2 +-
 weed/shell/command_volume_fsck.go           |  2 +-
 weed/storage/store.go                       | 18 +++++++++---------
 weed/storage/types/volume_disk_type.go      |  2 +-
 weed/topology/disk.go                       | 12 ++++++------
 weed/topology/node.go                       |  2 +-
 15 files changed, 39 insertions(+), 39 deletions(-)

diff --git a/weed/command/backup.go b/weed/command/backup.go
index b9973c6a9..207df770b 100644
--- a/weed/command/backup.go
+++ b/weed/command/backup.go
@@ -72,7 +72,7 @@ func runBackup(cmd *Command, args []string) bool {
 	vid := needle.VolumeId(*s.volumeId)
 
 	// find volume location, replication, ttl info
-	lookup, err := operation.Lookup(func()string{return *s.master}, vid.String())
+	lookup, err := operation.Lookup(func() string { return *s.master }, vid.String())
 	if err != nil {
 		fmt.Printf("Error looking up volume %d: %v\n", vid, err)
 		return true
diff --git a/weed/command/download.go b/weed/command/download.go
index 5da1f57d9..7bbff9448 100644
--- a/weed/command/download.go
+++ b/weed/command/download.go
@@ -44,7 +44,7 @@ var cmdDownload = &Command{
 
 func runDownload(cmd *Command, args []string) bool {
 	for _, fid := range args {
-		if e := downloadToFile(func()string{return *d.server}, fid, util.ResolvePath(*d.dir)); e != nil {
+		if e := downloadToFile(func() string { return *d.server }, fid, util.ResolvePath(*d.dir)); e != nil {
 			fmt.Println("Download Error: ", fid, e)
 		}
 	}
diff --git a/weed/command/upload.go b/weed/command/upload.go
index effcf8836..149d71241 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -96,7 +96,7 @@ func runUpload(cmd *Command, args []string) bool {
 					if e != nil {
 						return e
 					}
-					results, e := operation.SubmitFiles(func()string {return *upload.master}, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
+					results, e := operation.SubmitFiles(func() string { return *upload.master }, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
 					bytes, _ := json.Marshal(results)
 					fmt.Println(string(bytes))
 					if e != nil {
@@ -113,7 +113,7 @@ func runUpload(cmd *Command, args []string) bool {
 		if e != nil {
 			fmt.Println(e.Error())
 		}
-		results, _ := operation.SubmitFiles(func()string {return *upload.master}, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
+		results, _ := operation.SubmitFiles(func() string { return *upload.master }, grpcDialOption, parts, *upload.replication, *upload.collection, *upload.dataCenter, *upload.ttl, *upload.diskType, *upload.maxMB, *upload.usePublicUrl)
 		bytes, _ := json.Marshal(results)
 		fmt.Println(string(bytes))
 	}
diff --git a/weed/filer/mysql/mysql_store.go b/weed/filer/mysql/mysql_store.go
index 022a8d72d..501ab1d39 100644
--- a/weed/filer/mysql/mysql_store.go
+++ b/weed/filer/mysql/mysql_store.go
@@ -47,7 +47,7 @@ func (store *MysqlStore) initialize(user, password, hostname string, port int, d
 	store.SupportBucketTable = false
 	store.SqlGenerator = &SqlGenMysql{
 		CreateTableSqlTemplate: "",
-		DropTableSqlTemplate: "drop table `%s`",
+		DropTableSqlTemplate:   "drop table `%s`",
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, user, password, hostname, port, database)
diff --git a/weed/filer/postgres/postgres_sql_gen.go b/weed/filer/postgres/postgres_sql_gen.go
index 480f433ef..e13070c3d 100644
--- a/weed/filer/postgres/postgres_sql_gen.go
+++ b/weed/filer/postgres/postgres_sql_gen.go
@@ -1,10 +1,10 @@
 package postgres
 
 import (
-	`fmt`
+	"fmt"
 
-	`github.com/chrislusf/seaweedfs/weed/filer/abstract_sql`
-	_ `github.com/lib/pq`
+	"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
+	_ "github.com/lib/pq"
 )
 
 type SqlGenPostgres struct {
diff --git a/weed/filer/postgres2/postgres2_store.go b/weed/filer/postgres2/postgres2_store.go
index 4b5fbc8cf..92893bf7a 100644
--- a/weed/filer/postgres2/postgres2_store.go
+++ b/weed/filer/postgres2/postgres2_store.go
@@ -50,7 +50,7 @@ func (store *PostgresStore2) initialize(createTable, user, password, hostname st
 	store.SupportBucketTable = true
 	store.SqlGenerator = &postgres.SqlGenPostgres{
 		CreateTableSqlTemplate: createTable,
-		DropTableSqlTemplate: `drop table "%s"`,
+		DropTableSqlTemplate:   `drop table "%s"`,
 	}
 
 	sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, sslmode)
diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index b24514cda..0d5cfd29c 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -100,7 +100,7 @@ func retriedUploadData(uploadUrl string, filename string, cipher bool, data []by
 		} else {
 			glog.Warningf("uploading to %s: %v", uploadUrl, err)
 		}
-		time.Sleep(time.Millisecond * time.Duration(237 * (i+1)))
+		time.Sleep(time.Millisecond * time.Duration(237*(i+1)))
 	}
 	return
 }
diff --git a/weed/server/master_server_handlers_admin.go b/weed/server/master_server_handlers_admin.go
index 4a77d24b5..f24d4e924 100644
--- a/weed/server/master_server_handlers_admin.go
+++ b/weed/server/master_server_handlers_admin.go
@@ -125,13 +125,13 @@ func (ms *MasterServer) selfUrl(r *http.Request) string {
 }
 func (ms *MasterServer) submitFromMasterServerHandler(w http.ResponseWriter, r *http.Request) {
 	if ms.Topo.IsLeader() {
-		submitForClientHandler(w, r, func()string{return ms.selfUrl(r)}, ms.grpcDialOption)
+		submitForClientHandler(w, r, func() string { return ms.selfUrl(r) }, ms.grpcDialOption)
 	} else {
 		masterUrl, err := ms.Topo.Leader()
 		if err != nil {
 			writeJsonError(w, r, http.StatusInternalServerError, err)
 		} else {
-			submitForClientHandler(w, r, func()string{return masterUrl}, ms.grpcDialOption)
+			submitForClientHandler(w, r, func() string { return masterUrl }, ms.grpcDialOption)
 		}
 	}
 }
diff --git a/weed/server/volume_grpc_client_to_master.go b/weed/server/volume_grpc_client_to_master.go
index 323667d2e..f8875169f 100644
--- a/weed/server/volume_grpc_client_to_master.go
+++ b/weed/server/volume_grpc_client_to_master.go
@@ -219,14 +219,14 @@ func (vs *VolumeServer) doHeartbeat(masterNode, masterGrpcAddress string, grpcDi
 		case <-vs.stopChan:
 			var volumeMessages []*master_pb.VolumeInformationMessage
 			emptyBeat := &master_pb.Heartbeat{
-				Ip:             vs.store.Ip,
-				Port:           uint32(vs.store.Port),
-				PublicUrl:      vs.store.PublicUrl,
-				MaxFileKey:     uint64(0),
-				DataCenter:     vs.store.GetDataCenter(),
-				Rack:           vs.store.GetRack(),
-				Volumes:        volumeMessages,
-				HasNoVolumes:   len(volumeMessages) == 0,
+				Ip:           vs.store.Ip,
+				Port:         uint32(vs.store.Port),
+				PublicUrl:    vs.store.PublicUrl,
+				MaxFileKey:   uint64(0),
+				DataCenter:   vs.store.GetDataCenter(),
+				Rack:         vs.store.GetRack(),
+				Volumes:      volumeMessages,
+				HasNoVolumes: len(volumeMessages) == 0,
 			}
 			glog.V(1).Infof("volume server %s:%d stops and deletes all volumes", vs.store.Ip, vs.store.Port)
 			if err = stream.Send(emptyBeat); err != nil {
diff --git a/weed/shell/command_ec_test.go b/weed/shell/command_ec_test.go
index 14235d565..a1226adbb 100644
--- a/weed/shell/command_ec_test.go
+++ b/weed/shell/command_ec_test.go
@@ -126,7 +126,7 @@ func TestCommandEcBalanceVolumeEvenButRackUneven(t *testing.T) {
 func newEcNode(dc string, rack string, dataNodeId string, freeEcSlot int) *EcNode {
 	return &EcNode{
 		info: &master_pb.DataNodeInfo{
-			Id: dataNodeId,
+			Id:        dataNodeId,
 			DiskInfos: make(map[string]*master_pb.DiskInfo),
 		},
 		dc:         dc,
diff --git a/weed/shell/command_volume_fsck.go b/weed/shell/command_volume_fsck.go
index 677f38856..f9dcf3b5f 100644
--- a/weed/shell/command_volume_fsck.go
+++ b/weed/shell/command_volume_fsck.go
@@ -285,7 +285,7 @@ func (c *commandVolumeFsck) collectVolumeIds(verbose bool, writer io.Writer) (vo
 	}
 
 	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, t *master_pb.DataNodeInfo) {
-		for _, diskInfo := range t.DiskInfos{
+		for _, diskInfo := range t.DiskInfos {
 			for _, vi := range diskInfo.VolumeInfos {
 				volumeIdToServer[vi.Id] = VInfo{
 					server:     t.Id,
diff --git a/weed/storage/store.go b/weed/storage/store.go
index 92f1db2bc..47829666a 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -285,15 +285,15 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 	}
 
 	return &master_pb.Heartbeat{
-		Ip:                s.Ip,
-		Port:              uint32(s.Port),
-		PublicUrl:         s.PublicUrl,
-		MaxVolumeCounts:   maxVolumeCounts,
-		MaxFileKey:        NeedleIdToUint64(maxFileKey),
-		DataCenter:        s.dataCenter,
-		Rack:              s.rack,
-		Volumes:           volumeMessages,
-		HasNoVolumes:      len(volumeMessages) == 0,
+		Ip:              s.Ip,
+		Port:            uint32(s.Port),
+		PublicUrl:       s.PublicUrl,
+		MaxVolumeCounts: maxVolumeCounts,
+		MaxFileKey:      NeedleIdToUint64(maxFileKey),
+		DataCenter:      s.dataCenter,
+		Rack:            s.rack,
+		Volumes:         volumeMessages,
+		HasNoVolumes:    len(volumeMessages) == 0,
 	}
 
 }
diff --git a/weed/storage/types/volume_disk_type.go b/weed/storage/types/volume_disk_type.go
index 0e199a626..25056ee10 100644
--- a/weed/storage/types/volume_disk_type.go
+++ b/weed/storage/types/volume_disk_type.go
@@ -25,7 +25,7 @@ func ToDiskType(vt string) (diskType DiskType) {
 	return
 }
 
-func (diskType DiskType) String() string{
+func (diskType DiskType) String() string {
 	if diskType == "" {
 		return ""
 	}
diff --git a/weed/topology/disk.go b/weed/topology/disk.go
index c159c4cca..37d5e1272 100644
--- a/weed/topology/disk.go
+++ b/weed/topology/disk.go
@@ -48,11 +48,11 @@ func (d *DiskUsages) negative() *DiskUsages {
 	t := newDiskUsages()
 	for diskType, b := range d.usages {
 		a := t.getOrCreateDisk(diskType)
-		a.volumeCount = - b.volumeCount
-		a.remoteVolumeCount = - b.remoteVolumeCount
-		a.activeVolumeCount = - b.activeVolumeCount
-		a.ecShardCount = - b.ecShardCount
-		a.maxVolumeCount = - b.maxVolumeCount
+		a.volumeCount = -b.volumeCount
+		a.remoteVolumeCount = -b.remoteVolumeCount
+		a.activeVolumeCount = -b.activeVolumeCount
+		a.ecShardCount = -b.ecShardCount
+		a.maxVolumeCount = -b.maxVolumeCount
 
 	}
 	return t
@@ -68,7 +68,7 @@ func (d *DiskUsages) ToMap() interface{} {
 	return ret
 }
 
-func (d *DiskUsages) ToDiskInfo() (map[string]*master_pb.DiskInfo) {
+func (d *DiskUsages) ToDiskInfo() map[string]*master_pb.DiskInfo {
 	ret := make(map[string]*master_pb.DiskInfo)
 	for diskType, diskUsageCounts := range d.usages {
 		m := &master_pb.DiskInfo{
diff --git a/weed/topology/node.go b/weed/topology/node.go
index f9ac890ef..95d63972e 100644
--- a/weed/topology/node.go
+++ b/weed/topology/node.go
@@ -39,7 +39,7 @@ type NodeImpl struct {
 	diskUsages   *DiskUsages
 	id           NodeId
 	parent       Node
-	sync.RWMutex     // lock children
+	sync.RWMutex // lock children
 	children     map[NodeId]Node
 	maxVolumeId  needle.VolumeId
 

From eab6e31d34bb22beeb1ca416596c44b1590075c0 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Thu, 18 Feb 2021 14:05:28 +0800
Subject: [PATCH 101/140] use backticks instead of double quotes to avoid
 escaped additionally in regex

---
 weed/operation/upload_content.go           | 2 +-
 weed/s3api/s3api_server.go                 | 2 +-
 weed/server/volume_server_handlers_read.go | 2 +-
 weed/storage/disk_location_ec.go           | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index fccc24b16..abb13bbf7 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -62,7 +62,7 @@ func init() {
 	}}
 }
 
-var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
+var fileNameEscaper = strings.NewReplacer(`\`, `\\`, `"`, `\"`)
 
 // Upload sends a POST request to a volume server to upload the content with adjustable compression level
 func UploadData(uploadUrl string, filename string, cipher bool, data []byte, isInputCompressed bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) {
diff --git a/weed/s3api/s3api_server.go b/weed/s3api/s3api_server.go
index 4993104ae..54df29492 100644
--- a/weed/s3api/s3api_server.go
+++ b/weed/s3api/s3api_server.go
@@ -64,7 +64,7 @@ func (s3a *S3ApiServer) registerRouter(router *mux.Router) {
 		bucket.Methods("HEAD").HandlerFunc(track(s3a.iam.Auth(s3a.HeadBucketHandler, ACTION_ADMIN), "GET"))
 
 		// CopyObjectPart
-		bucket.Methods("PUT").Path("/{object:.+}").HeadersRegexp("X-Amz-Copy-Source", ".*?(\\/|%2F).*?").HandlerFunc(track(s3a.iam.Auth(s3a.CopyObjectPartHandler, ACTION_WRITE), "PUT")).Queries("partNumber", "{partNumber:[0-9]+}", "uploadId", "{uploadId:.*}")
+		bucket.Methods("PUT").Path("/{object:.+}").HeadersRegexp("X-Amz-Copy-Source", `.*?(\/|%2F).*?`).HandlerFunc(track(s3a.iam.Auth(s3a.CopyObjectPartHandler, ACTION_WRITE), "PUT")).Queries("partNumber", "{partNumber:[0-9]+}", "uploadId", "{uploadId:.*}")
 		// PutObjectPart
 		bucket.Methods("PUT").Path("/{object:.+}").HandlerFunc(track(s3a.iam.Auth(s3a.PutObjectPartHandler, ACTION_WRITE), "PUT")).Queries("partNumber", "{partNumber:[0-9]+}", "uploadId", "{uploadId:.*}")
 		// CompleteMultipartUpload
diff --git a/weed/server/volume_server_handlers_read.go b/weed/server/volume_server_handlers_read.go
index 1cd4ee21d..0178ffd7d 100644
--- a/weed/server/volume_server_handlers_read.go
+++ b/weed/server/volume_server_handlers_read.go
@@ -23,7 +23,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
-var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
+var fileNameEscaper = strings.NewReplacer(`\`, `\\`, `"`, `\"`)
 
 func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request) {
 
diff --git a/weed/storage/disk_location_ec.go b/weed/storage/disk_location_ec.go
index d1237b40f..ff368c6fc 100644
--- a/weed/storage/disk_location_ec.go
+++ b/weed/storage/disk_location_ec.go
@@ -14,7 +14,7 @@ import (
 )
 
 var (
-	re = regexp.MustCompile("\\.ec[0-9][0-9]")
+	re = regexp.MustCompile(`\.ec[0-9][0-9]`)
 )
 
 func (l *DiskLocation) FindEcVolume(vid needle.VolumeId) (*erasure_coding.EcVolume, bool) {

From 816ef0ed302c263939ce900a01624f80dbdf17b9 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 10:34:46 -0800
Subject: [PATCH 102/140] add more help message

fix https://github.com/chrislusf/seaweedfs/issues/1816
---
 weed/shell/shell_liner.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/shell/shell_liner.go b/weed/shell/shell_liner.go
index 2d5166acf..00adb1abc 100644
--- a/weed/shell/shell_liner.go
+++ b/weed/shell/shell_liner.go
@@ -92,7 +92,7 @@ func processEachCmd(reg *regexp.Regexp, cmd string, commandEnv *CommandEnv) bool
 
 func printGenericHelp() {
 	msg :=
-		`Type:	"help <command>" for help on <command>
+		`Type:	"help <command>" for help on <command>. Most commands support "<command> -h" also for options. 
 `
 	fmt.Print(msg)
 

From c2ad6f104757b2d58c9a354400d4ec8bca268c3e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 12:15:09 -0800
Subject: [PATCH 103/140] webdav add replication setting

fix https://github.com/chrislusf/seaweedfs/issues/1817
---
 weed/command/filer.go        | 3 ++-
 weed/command/server.go       | 1 +
 weed/command/webdav.go       | 3 +++
 weed/server/webdav_server.go | 5 +++--
 4 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/weed/command/filer.go b/weed/command/filer.go
index 7f665cec8..f8fa57584 100644
--- a/weed/command/filer.go
+++ b/weed/command/filer.go
@@ -52,7 +52,7 @@ type FilerOptions struct {
 func init() {
 	cmdFiler.Run = runFiler // break init cycle
 	f.masters = cmdFiler.Flag.String("master", "localhost:9333", "comma-separated master servers")
-	f.collection = cmdFiler.Flag.String("collection", "", "all data will be stored in this collection")
+	f.collection = cmdFiler.Flag.String("collection", "", "all data will be stored in this default collection")
 	f.ip = cmdFiler.Flag.String("ip", util.DetectedHostAddress(), "filer server http listen ip address")
 	f.bindIp = cmdFiler.Flag.String("ip.bind", "0.0.0.0", "ip address to bind to")
 	f.port = cmdFiler.Flag.Int("port", 8888, "filer server http listen port")
@@ -83,6 +83,7 @@ func init() {
 	filerStartWebDav = cmdFiler.Flag.Bool("webdav", false, "whether to start webdav gateway")
 	filerWebDavOptions.port = cmdFiler.Flag.Int("webdav.port", 7333, "webdav server http listen port")
 	filerWebDavOptions.collection = cmdFiler.Flag.String("webdav.collection", "", "collection to create the files")
+	filerWebDavOptions.replication = cmdFiler.Flag.String("webdav.replication", "", "replication to create the files")
 	filerWebDavOptions.tlsPrivateKey = cmdFiler.Flag.String("webdav.key.file", "", "path to the TLS private key file")
 	filerWebDavOptions.tlsCertificate = cmdFiler.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	filerWebDavOptions.cacheDir = cmdFiler.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/command/server.go b/weed/command/server.go
index 61cac2cc7..f5a07e981 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -121,6 +121,7 @@ func init() {
 
 	webdavOptions.port = cmdServer.Flag.Int("webdav.port", 7333, "webdav server http listen port")
 	webdavOptions.collection = cmdServer.Flag.String("webdav.collection", "", "collection to create the files")
+	webdavOptions.replication = cmdServer.Flag.String("webdav.replication", "", "replication to create the files")
 	webdavOptions.tlsPrivateKey = cmdServer.Flag.String("webdav.key.file", "", "path to the TLS private key file")
 	webdavOptions.tlsCertificate = cmdServer.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	webdavOptions.cacheDir = cmdServer.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/command/webdav.go b/weed/command/webdav.go
index dc84b1fd0..158ba292f 100644
--- a/weed/command/webdav.go
+++ b/weed/command/webdav.go
@@ -25,6 +25,7 @@ type WebDavOption struct {
 	filer          *string
 	port           *int
 	collection     *string
+	replication    *string
 	tlsPrivateKey  *string
 	tlsCertificate *string
 	cacheDir       *string
@@ -36,6 +37,7 @@ func init() {
 	webDavStandaloneOptions.filer = cmdWebDav.Flag.String("filer", "localhost:8888", "filer server address")
 	webDavStandaloneOptions.port = cmdWebDav.Flag.Int("port", 7333, "webdav server http listen port")
 	webDavStandaloneOptions.collection = cmdWebDav.Flag.String("collection", "", "collection to create the files")
+	webDavStandaloneOptions.replication = cmdWebDav.Flag.String("replication", "", "replication to create the files")
 	webDavStandaloneOptions.tlsPrivateKey = cmdWebDav.Flag.String("key.file", "", "path to the TLS private key file")
 	webDavStandaloneOptions.tlsCertificate = cmdWebDav.Flag.String("cert.file", "", "path to the TLS certificate file")
 	webDavStandaloneOptions.cacheDir = cmdWebDav.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks")
@@ -107,6 +109,7 @@ func (wo *WebDavOption) startWebDav() bool {
 		FilerGrpcAddress: filerGrpcAddress,
 		GrpcDialOption:   grpcDialOption,
 		Collection:       *wo.collection,
+		Replication:      *wo.replication,
 		Uid:              uid,
 		Gid:              gid,
 		Cipher:           cipher,
diff --git a/weed/server/webdav_server.go b/weed/server/webdav_server.go
index 4b57c7afe..c3f68fdee 100644
--- a/weed/server/webdav_server.go
+++ b/weed/server/webdav_server.go
@@ -33,6 +33,7 @@ type WebDavOption struct {
 	BucketsPath      string
 	GrpcDialOption   grpc.DialOption
 	Collection       string
+	Replication      string
 	DiskType         string
 	Uid              uint32
 	Gid              uint32
@@ -225,7 +226,7 @@ func (fs *WebDavFileSystem) OpenFile(ctx context.Context, fullFilePath string, f
 						Uid:         fs.option.Uid,
 						Gid:         fs.option.Gid,
 						Collection:  fs.option.Collection,
-						Replication: "000",
+						Replication: fs.option.Replication,
 						TtlSec:      0,
 					},
 				},
@@ -381,7 +382,7 @@ func (f *WebDavFile) saveDataAsChunk(reader io.Reader, name string, offset int64
 
 		request := &filer_pb.AssignVolumeRequest{
 			Count:       1,
-			Replication: "",
+			Replication: f.fs.option.Replication,
 			Collection:  f.fs.option.Collection,
 			DiskType:    f.fs.option.DiskType,
 			Path:        name,

From 4de2d6774af43fd290ccc02eb333e661144ea741 Mon Sep 17 00:00:00 2001
From: Robin <robinslot@hotmail.nl>
Date: Thu, 18 Feb 2021 21:23:26 +0100
Subject: [PATCH 104/140] Add build arg to choose dev or stable release

---
 docker/Dockerfile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/docker/Dockerfile b/docker/Dockerfile
index 528a52609..6309e7e2e 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,7 @@
 FROM alpine
 
+ARG RELEASE=latest # 'latest' or 'dev'
+
 RUN \
     ARCH=$(if [ $(uname -m) == "x86_64" ] && [ $(getconf LONG_BIT) == "64" ]; then echo "amd64"; \
          elif [ $(uname -m) == "x86_64" ] && [ $(getconf LONG_BIT) == "32" ]; then echo "386"; \
@@ -13,7 +15,7 @@ RUN \
     # Install SeaweedFS and Supercronic ( for cron job mode )
     apk add --no-cache --virtual build-dependencies --update wget curl ca-certificates && \
     apk add fuse && \
-    wget -P /tmp https://github.com/$(curl -s -L https://github.com/chrislusf/seaweedfs/releases/latest | egrep -o "chrislusf/seaweedfs/releases/download/.*/linux_$ARCH.tar.gz") && \
+    wget -P /tmp https://github.com/$(curl -s -L https://github.com/chrislusf/seaweedfs/releases/${RELEASE} | egrep -o "chrislusf/seaweedfs/releases/download/.*/linux_$ARCH.tar.gz") && \
     tar -C /usr/bin/ -xzvf /tmp/linux_$ARCH.tar.gz && \
     curl -fsSLO "$SUPERCRONIC_URL" && \
     echo "${SUPERCRONIC_SHA1SUM}  ${SUPERCRONIC}" | sha1sum -c - && \

From e1992c83deeff50d5ddbd385dccac46e941fafcb Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 15:45:12 -0800
Subject: [PATCH 105/140] webdav adds disktype

---
 weed/command/filer.go  | 1 +
 weed/command/server.go | 1 +
 weed/command/webdav.go | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/weed/command/filer.go b/weed/command/filer.go
index f8fa57584..6660bd694 100644
--- a/weed/command/filer.go
+++ b/weed/command/filer.go
@@ -84,6 +84,7 @@ func init() {
 	filerWebDavOptions.port = cmdFiler.Flag.Int("webdav.port", 7333, "webdav server http listen port")
 	filerWebDavOptions.collection = cmdFiler.Flag.String("webdav.collection", "", "collection to create the files")
 	filerWebDavOptions.replication = cmdFiler.Flag.String("webdav.replication", "", "replication to create the files")
+	filerWebDavOptions.disk = cmdFiler.Flag.String("webdav.disk", "", "[hdd|ssd] hard drive or solid state drive")
 	filerWebDavOptions.tlsPrivateKey = cmdFiler.Flag.String("webdav.key.file", "", "path to the TLS private key file")
 	filerWebDavOptions.tlsCertificate = cmdFiler.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	filerWebDavOptions.cacheDir = cmdFiler.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/command/server.go b/weed/command/server.go
index f5a07e981..d7c41b014 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -122,6 +122,7 @@ func init() {
 	webdavOptions.port = cmdServer.Flag.Int("webdav.port", 7333, "webdav server http listen port")
 	webdavOptions.collection = cmdServer.Flag.String("webdav.collection", "", "collection to create the files")
 	webdavOptions.replication = cmdServer.Flag.String("webdav.replication", "", "replication to create the files")
+	webdavOptions.disk = cmdServer.Flag.String("webdav.disk", "", "[hdd|ssd] hard drive or solid state drive")
 	webdavOptions.tlsPrivateKey = cmdServer.Flag.String("webdav.key.file", "", "path to the TLS private key file")
 	webdavOptions.tlsCertificate = cmdServer.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	webdavOptions.cacheDir = cmdServer.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/command/webdav.go b/weed/command/webdav.go
index 158ba292f..3e4532d6e 100644
--- a/weed/command/webdav.go
+++ b/weed/command/webdav.go
@@ -26,6 +26,7 @@ type WebDavOption struct {
 	port           *int
 	collection     *string
 	replication    *string
+	disk           *string
 	tlsPrivateKey  *string
 	tlsCertificate *string
 	cacheDir       *string
@@ -38,6 +39,7 @@ func init() {
 	webDavStandaloneOptions.port = cmdWebDav.Flag.Int("port", 7333, "webdav server http listen port")
 	webDavStandaloneOptions.collection = cmdWebDav.Flag.String("collection", "", "collection to create the files")
 	webDavStandaloneOptions.replication = cmdWebDav.Flag.String("replication", "", "replication to create the files")
+	webDavStandaloneOptions.disk = cmdWebDav.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
 	webDavStandaloneOptions.tlsPrivateKey = cmdWebDav.Flag.String("key.file", "", "path to the TLS private key file")
 	webDavStandaloneOptions.tlsCertificate = cmdWebDav.Flag.String("cert.file", "", "path to the TLS certificate file")
 	webDavStandaloneOptions.cacheDir = cmdWebDav.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks")
@@ -110,6 +112,7 @@ func (wo *WebDavOption) startWebDav() bool {
 		GrpcDialOption:   grpcDialOption,
 		Collection:       *wo.collection,
 		Replication:      *wo.replication,
+		DiskType:         *wo.disk,
 		Uid:              uid,
 		Gid:              gid,
 		Cipher:           cipher,

From 776f49746930ef3eabf8361886161f18ca3e2c8c Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 17:07:02 -0800
Subject: [PATCH 106/140] filer: fs.configure should try to read from
 entry.content also

related to https://github.com/chrislusf/seaweedfs/issues/1792
---
 weed/filer/filer_conf.go          | 16 +++++++++-------
 weed/filer/filer_on_meta_event.go |  2 +-
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/weed/filer/filer_conf.go b/weed/filer/filer_conf.go
index b4f0e5890..8e549f5ad 100644
--- a/weed/filer/filer_conf.go
+++ b/weed/filer/filer_conf.go
@@ -46,17 +46,19 @@ func (fc *FilerConf) loadFromFiler(filer *Filer) (err error) {
 		return fc.LoadFromBytes(entry.Content)
 	}
 
-	return fc.loadFromChunks(filer, entry.Chunks)
+	return fc.loadFromChunks(filer, entry.Content, entry.Chunks)
 }
 
-func (fc *FilerConf) loadFromChunks(filer *Filer, chunks []*filer_pb.FileChunk) (err error) {
-	data, err := filer.readEntry(chunks)
-	if err != nil {
-		glog.Errorf("read filer conf content: %v", err)
-		return
+func (fc *FilerConf) loadFromChunks(filer *Filer, content []byte, chunks []*filer_pb.FileChunk) (err error) {
+	if len(content) == 0 {
+		content, err = filer.readEntry(chunks)
+		if err != nil {
+			glog.Errorf("read filer conf content: %v", err)
+			return
+		}
 	}
 
-	return fc.LoadFromBytes(data)
+	return fc.LoadFromBytes(content)
 }
 
 func (fc *FilerConf) LoadFromBytes(data []byte) (err error) {
diff --git a/weed/filer/filer_on_meta_event.go b/weed/filer/filer_on_meta_event.go
index d93a7e9e3..295a5039e 100644
--- a/weed/filer/filer_on_meta_event.go
+++ b/weed/filer/filer_on_meta_event.go
@@ -40,7 +40,7 @@ func (f *Filer) readEntry(chunks []*filer_pb.FileChunk) ([]byte, error) {
 
 func (f *Filer) reloadFilerConfiguration(entry *filer_pb.Entry) {
 	fc := NewFilerConf()
-	err := fc.loadFromChunks(f, entry.Chunks)
+	err := fc.loadFromChunks(f, entry.Content, entry.Chunks)
 	if err != nil {
 		glog.Errorf("read filer conf chunks: %v", err)
 		return

From 73958e357dba827cd82e3ed8b277d865aae37a72 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 19:10:20 -0800
Subject: [PATCH 107/140] add descriptive error if no free volumes

---
 weed/server/master_grpc_server_volume.go      |  2 +-
 weed/server/master_server_handlers.go         |  2 +-
 weed/storage/super_block/replica_placement.go |  6 ++---
 weed/topology/volume_growth.go                | 22 ++++++++++---------
 4 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/weed/server/master_grpc_server_volume.go b/weed/server/master_grpc_server_volume.go
index 1699eaa36..29aff5c0b 100644
--- a/weed/server/master_grpc_server_volume.go
+++ b/weed/server/master_grpc_server_volume.go
@@ -77,7 +77,7 @@ func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest
 
 	if !ms.Topo.HasWritableVolume(option) {
 		if ms.Topo.AvailableSpaceFor(option) <= 0 {
-			return nil, fmt.Errorf("No free volumes left!")
+			return nil, fmt.Errorf("no free volumes left for "+option.String())
 		}
 		ms.vgLock.Lock()
 		if !ms.Topo.HasWritableVolume(option) {
diff --git a/weed/server/master_server_handlers.go b/weed/server/master_server_handlers.go
index 117423ec6..a9fecc5bd 100644
--- a/weed/server/master_server_handlers.go
+++ b/weed/server/master_server_handlers.go
@@ -113,7 +113,7 @@ func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request)
 
 	if !ms.Topo.HasWritableVolume(option) {
 		if ms.Topo.AvailableSpaceFor(option) <= 0 {
-			writeJsonQuiet(w, r, http.StatusNotFound, operation.AssignResult{Error: "No free volumes left!"})
+			writeJsonQuiet(w, r, http.StatusNotFound, operation.AssignResult{Error: "No free volumes left for " + option.String()})
 			return
 		}
 		ms.vgLock.Lock()
diff --git a/weed/storage/super_block/replica_placement.go b/weed/storage/super_block/replica_placement.go
index fcccbba7d..65ec53819 100644
--- a/weed/storage/super_block/replica_placement.go
+++ b/weed/storage/super_block/replica_placement.go
@@ -6,9 +6,9 @@ import (
 )
 
 type ReplicaPlacement struct {
-	SameRackCount       int
-	DiffRackCount       int
-	DiffDataCenterCount int
+	SameRackCount       int `json:"node,omitempty"`
+	DiffRackCount       int `json:"rack,omitempty"`
+	DiffDataCenterCount int `json:"dc,omitempty"`
 }
 
 func NewReplicaPlacementFromString(t string) (*ReplicaPlacement, error) {
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index 4b0a4837e..8941a049b 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -1,6 +1,7 @@
 package topology
 
 import (
+	"encoding/json"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"math/rand"
@@ -25,15 +26,15 @@ This package is created to resolve these replica placement issues:
 */
 
 type VolumeGrowOption struct {
-	Collection         string
-	ReplicaPlacement   *super_block.ReplicaPlacement
-	Ttl                *needle.TTL
-	DiskType           types.DiskType
-	Prealloacte        int64
-	DataCenter         string
-	Rack               string
-	DataNode           string
-	MemoryMapMaxSizeMb uint32
+	Collection         string                        `json:"collection,omitempty"`
+	ReplicaPlacement   *super_block.ReplicaPlacement `json:"replication,omitempty"`
+	Ttl                *needle.TTL                   `json:"ttl,omitempty"`
+	DiskType           types.DiskType                `json:"disk,omitempty"`
+	Prealloacte        int64                         `json:"prealloacte,omitempty"`
+	DataCenter         string                        `json:"dataCenter,omitempty"`
+	Rack               string                        `json:"rack,omitempty"`
+	DataNode           string                        `json:"dataNode,omitempty"`
+	MemoryMapMaxSizeMb uint32                        `json:"memoryMapMaxSizeMb,omitempty"`
 }
 
 type VolumeGrowth struct {
@@ -41,7 +42,8 @@ type VolumeGrowth struct {
 }
 
 func (o *VolumeGrowOption) String() string {
-	return fmt.Sprintf("Collection:%s, ReplicaPlacement:%v, Ttl:%v, DataCenter:%s, Rack:%s, DataNode:%s", o.Collection, o.ReplicaPlacement, o.Ttl, o.DataCenter, o.Rack, o.DataNode)
+	blob, _ := json.Marshal(o)
+	return string(blob)
 }
 
 func NewDefaultVolumeGrowth() *VolumeGrowth {

From 29575dadc54b2e3780073f8b86f110d7cb7c1f20 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 19:14:58 -0800
Subject: [PATCH 108/140] remove extra files

---
 weed/filer.toml | 11 -----------
 1 file changed, 11 deletions(-)
 delete mode 100644 weed/filer.toml

diff --git a/weed/filer.toml b/weed/filer.toml
deleted file mode 100644
index c0530b3f1..000000000
--- a/weed/filer.toml
+++ /dev/null
@@ -1,11 +0,0 @@
-[elastic7]
-enabled = true
-servers = [
-    "http://localhost:9200",
-]
-username = ""
-password = ""
-sniff_enabled = false
-healthcheck_enabled = false
-# increase the value is recommend, be sure the value in Elastic is greater or equal here
-index.max_result_window = 10000

From c78409a5983145784d128c86541c6715dad3a937 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 18 Feb 2021 23:22:54 -0800
Subject: [PATCH 109/140] volume: avoid file.stat(), file.seek() if possible
 during writes

---
 weed/storage/backend/disk_file.go | 23 +++++++++++++++++++++--
 weed/storage/needle_map.go        | 16 ++++++++++++----
 2 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 2b04c8df2..6a42ad8e7 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -12,6 +12,8 @@ var (
 type DiskFile struct {
 	File         *os.File
 	fullFilePath string
+	fileSize     int64
+	modTime      time.Time
 }
 
 func NewDiskFile(f *os.File) *DiskFile {
@@ -26,11 +28,24 @@ func (df *DiskFile) ReadAt(p []byte, off int64) (n int, err error) {
 }
 
 func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
-	return df.File.WriteAt(p, off)
+	n, err = df.File.WriteAt(p, off)
+	if err == nil {
+		waterMark := off + int64(n)
+		if waterMark > df.fileSize {
+			df.fileSize = waterMark
+			df.modTime = time.Now()
+		}
+	}
+	return
 }
 
 func (df *DiskFile) Truncate(off int64) error {
-	return df.File.Truncate(off)
+	err := df.File.Truncate(off)
+	if err == nil {
+		df.fileSize = off
+		df.modTime = time.Now()
+	}
+	return err
 }
 
 func (df *DiskFile) Close() error {
@@ -38,6 +53,9 @@ func (df *DiskFile) Close() error {
 }
 
 func (df *DiskFile) GetStat() (datSize int64, modTime time.Time, err error) {
+	if df.fileSize != 0 {
+		return df.fileSize, df.modTime, nil
+	}
 	stat, e := df.File.Stat()
 	if e == nil {
 		return stat.Size(), stat.ModTime(), nil
@@ -50,5 +68,6 @@ func (df *DiskFile) Name() string {
 }
 
 func (df *DiskFile) Sync() error {
+	df.fileSize = 0
 	return df.File.Sync()
 }
diff --git a/weed/storage/needle_map.go b/weed/storage/needle_map.go
index 5b41286ea..f12198c57 100644
--- a/weed/storage/needle_map.go
+++ b/weed/storage/needle_map.go
@@ -41,6 +41,7 @@ type baseNeedleMapper struct {
 
 	indexFile           *os.File
 	indexFileAccessLock sync.Mutex
+	indexFileOffset     int64
 }
 
 func (nm *baseNeedleMapper) IndexFileSize() uint64 {
@@ -56,11 +57,18 @@ func (nm *baseNeedleMapper) appendToIndexFile(key NeedleId, offset Offset, size
 
 	nm.indexFileAccessLock.Lock()
 	defer nm.indexFileAccessLock.Unlock()
-	if _, err := nm.indexFile.Seek(0, 2); err != nil {
-		return fmt.Errorf("cannot seek end of indexfile %s: %v",
-			nm.indexFile.Name(), err)
+	if nm.indexFileOffset == 0 {
+		if fileSize, err := nm.indexFile.Seek(0, 2); err != nil {
+			return fmt.Errorf("cannot seek end of indexfile %s: %v",
+				nm.indexFile.Name(), err)
+		} else {
+			nm.indexFileOffset = fileSize
+		}
+	}
+	written, err := nm.indexFile.WriteAt(bytes, nm.indexFileOffset)
+	if err == nil {
+		nm.indexFileOffset += int64(written)
 	}
-	_, err := nm.indexFile.Write(bytes)
 	return err
 }
 

From 7ffe736d20f68cd0bd3d000649494e4550127c7d Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Fri, 19 Feb 2021 15:59:55 +0800
Subject: [PATCH 110/140] renaming to ErrXyz

---
 weed/server/volume_server_handlers_read.go   |  2 +-
 weed/storage/needle/needle_read_write.go     |  4 ++--
 weed/storage/store_ec.go                     |  4 ++--
 weed/storage/volume_checking.go              |  4 ++--
 weed/storage/volume_read_write.go            | 16 +++++++++-------
 weed/util/chunk_cache/chunk_cache_on_disk.go |  2 +-
 weed/util/chunk_cache/on_disk_cache_layer.go |  2 +-
 7 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/weed/server/volume_server_handlers_read.go b/weed/server/volume_server_handlers_read.go
index 2db46ac9b..9604e7fe8 100644
--- a/weed/server/volume_server_handlers_read.go
+++ b/weed/server/volume_server_handlers_read.go
@@ -93,7 +93,7 @@ func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 	} else if hasEcVolume {
 		count, err = vs.store.ReadEcShardNeedle(volumeId, n)
 	}
-	if err != nil && err != storage.ErrorDeleted && r.FormValue("type") != "replicate" && hasVolume {
+	if err != nil && err != storage.ErrDeleted && r.FormValue("type") != "replicate" && hasVolume {
 		glog.V(4).Infof("read needle: %v", err)
 		// start to fix it from other replicas, if not deleted and hasVolume and is not a replicated request
 	}
diff --git a/weed/storage/needle/needle_read_write.go b/weed/storage/needle/needle_read_write.go
index e758a6fee..4f8909faa 100644
--- a/weed/storage/needle/needle_read_write.go
+++ b/weed/storage/needle/needle_read_write.go
@@ -24,7 +24,7 @@ const (
 	TtlBytesLength          = 2
 )
 
-var ErrorSizeMismatch = errors.New("size mismatch")
+var ErrSizeMismatch = errors.New("size mismatch")
 
 func (n *Needle) DiskSize(version Version) int64 {
 	return GetActualSize(n.Size, version)
@@ -173,7 +173,7 @@ func (n *Needle) ReadBytes(bytes []byte, offset int64, size Size, version Versio
 		// cookie is not always passed in for this API. Use size to do preliminary checking.
 		if OffsetSize == 4 && offset < int64(MaxPossibleVolumeSize) {
 			glog.Errorf("entry not found1: offset %d found id %x size %d, expected size %d", offset, n.Id, n.Size, size)
-			return ErrorSizeMismatch
+			return ErrSizeMismatch
 		}
 		return fmt.Errorf("entry not found: offset %d found id %x size %d, expected size %d", offset, n.Id, n.Size, size)
 	}
diff --git a/weed/storage/store_ec.go b/weed/storage/store_ec.go
index a9b6a8ff3..55b9a6fc6 100644
--- a/weed/storage/store_ec.go
+++ b/weed/storage/store_ec.go
@@ -130,7 +130,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, fmt.Errorf("locate in local ec volume: %v", err)
 			}
 			if size.IsDeleted() {
-				return 0, ErrorDeleted
+				return 0, ErrDeleted
 			}
 
 			glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToActualOffset(), size, intervals)
@@ -143,7 +143,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
 			}
 			if isDeleted {
-				return 0, ErrorDeleted
+				return 0, ErrDeleted
 			}
 
 			err = n.ReadBytes(bytes, offset.ToActualOffset(), size, localEcVolume.Version)
diff --git a/weed/storage/volume_checking.go b/weed/storage/volume_checking.go
index b76933083..f6e75a07c 100644
--- a/weed/storage/volume_checking.go
+++ b/weed/storage/volume_checking.go
@@ -30,7 +30,7 @@ func CheckAndFixVolumeDataIntegrity(v *Volume, indexFile *os.File) (lastAppendAt
 			healthyIndexSize = indexSize - int64(i)*NeedleMapEntrySize
 			continue
 		}
-		if err != ErrorSizeMismatch {
+		if err != ErrSizeMismatch {
 			break
 		}
 	}
@@ -94,7 +94,7 @@ func verifyNeedleIntegrity(datFile backend.BackendStorageFile, v needle.Version,
 		return 0, fmt.Errorf("read %s at %d", datFile.Name(), offset)
 	}
 	if n.Size != size {
-		return 0, ErrorSizeMismatch
+		return 0, ErrSizeMismatch
 	}
 	if v == needle.Version3 {
 		bytes := make([]byte, TimestampSize)
diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index 07376bc88..7076e198b 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -15,9 +15,9 @@ import (
 	. "github.com/chrislusf/seaweedfs/weed/storage/types"
 )
 
-var ErrorNotFound = errors.New("not found")
-var ErrorDeleted = errors.New("already deleted")
-var ErrorSizeMismatch = errors.New("size mismatch")
+var ErrNotFound = errors.New("not found")
+var ErrDeleted = errors.New("already deleted")
+var ErrSizeMismatch = errors.New("size mismatch")
 
 func (v *Volume) checkReadWriteError(err error) {
 	if err == nil {
@@ -289,7 +289,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 
 	nv, ok := v.nm.Get(n.Id)
 	if !ok || nv.Offset.IsZero() {
-		return -1, ErrorNotFound
+		return -1, ErrNotFound
 	}
 	readSize := nv.Size
 	if readSize.IsDeleted() {
@@ -297,14 +297,16 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 			glog.V(3).Infof("reading deleted %s", n.String())
 			readSize = -readSize
 		} else {
-			return -1, ErrorDeleted
+			return -1, ErrDeleted
 		}
 	}
 	if readSize == 0 {
 		return 0, nil
 	}
 	err := n.ReadData(v.DataBackend, nv.Offset.ToActualOffset(), readSize, v.Version())
-	if err == needle.ErrorSizeMismatch && OffsetSize == 4 {
+	if err == needle.ErrSizeMismatch && OffsetSize == 4 {
+		// add special handling for .dat larger than 32GB, from git commit comment of
+		// 06c15ab3 Chris Lu <chris.lu@gmail.com> on 2020/10/28 at 4:11 上
 		err = n.ReadData(v.DataBackend, nv.Offset.ToActualOffset()+int64(MaxPossibleVolumeSize), readSize, v.Version())
 	}
 	v.checkReadWriteError(err)
@@ -325,7 +327,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 	if time.Now().Before(time.Unix(0, int64(n.AppendAtNs)).Add(time.Duration(ttlMinutes) * time.Minute)) {
 		return bytesRead, nil
 	}
-	return -1, ErrorNotFound
+	return -1, ErrNotFound
 }
 
 func (v *Volume) startWorker() {
diff --git a/weed/util/chunk_cache/chunk_cache_on_disk.go b/weed/util/chunk_cache/chunk_cache_on_disk.go
index d724e925e..c9f7356d6 100644
--- a/weed/util/chunk_cache/chunk_cache_on_disk.go
+++ b/weed/util/chunk_cache/chunk_cache_on_disk.go
@@ -104,7 +104,7 @@ func (v *ChunkCacheVolume) GetNeedle(key types.NeedleId) ([]byte, error) {
 
 	nv, ok := v.nm.Get(key)
 	if !ok {
-		return nil, storage.ErrorNotFound
+		return nil, storage.ErrNotFound
 	}
 	data := make([]byte, nv.Size)
 	if readSize, readErr := v.DataBackend.ReadAt(data, nv.Offset.ToActualOffset()); readErr != nil {
diff --git a/weed/util/chunk_cache/on_disk_cache_layer.go b/weed/util/chunk_cache/on_disk_cache_layer.go
index eebd89798..2e8f998f7 100644
--- a/weed/util/chunk_cache/on_disk_cache_layer.go
+++ b/weed/util/chunk_cache/on_disk_cache_layer.go
@@ -66,7 +66,7 @@ func (c *OnDiskCacheLayer) getChunk(needleId types.NeedleId) (data []byte) {
 
 	for _, diskCache := range c.diskCaches {
 		data, err = diskCache.GetNeedle(needleId)
-		if err == storage.ErrorNotFound {
+		if err == storage.ErrNotFound {
 			continue
 		}
 		if err != nil {

From c576ad04aca940319ec6d41583c93398b68dbe58 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 01:38:56 -0800
Subject: [PATCH 111/140] fix volume server display for volumes

---
 weed/topology/data_node.go | 21 ++++++++++++++++++++-
 weed/topology/disk.go      | 19 -------------------
 2 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 1a0ebf761..d4ec94fbe 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -207,7 +207,26 @@ func (dn *DataNode) ToMap() interface{} {
 	ret := make(map[string]interface{})
 	ret["Url"] = dn.Url()
 	ret["PublicUrl"] = dn.PublicUrl
-	ret["Disks"] = dn.diskUsages.ToMap()
+
+	// aggregated volume info
+	var volumeCount, ecShardCount, maxVolumeCount int64
+	var volumeIds string
+	for _, diskUsage := range dn.diskUsages.usages {
+		volumeCount += diskUsage.volumeCount
+		ecShardCount += diskUsage.ecShardCount
+		maxVolumeCount += diskUsage.maxVolumeCount
+	}
+
+	for _, disk := range dn.Children() {
+		d := disk.(*Disk)
+		volumeIds += d.GetVolumeIds()
+	}
+
+	ret["Volumes"] = volumeCount
+	ret["EcShards"] = ecShardCount
+	ret["Max"] = maxVolumeCount
+	ret["volumeIds"] = volumeIds
+
 	return ret
 }
 
diff --git a/weed/topology/disk.go b/weed/topology/disk.go
index 37d5e1272..a085f8dff 100644
--- a/weed/topology/disk.go
+++ b/weed/topology/disk.go
@@ -58,16 +58,6 @@ func (d *DiskUsages) negative() *DiskUsages {
 	return t
 }
 
-func (d *DiskUsages) ToMap() interface{} {
-	d.RLock()
-	defer d.RUnlock()
-	ret := make(map[string]interface{})
-	for diskType, diskUsage := range d.usages {
-		ret[diskType.String()] = diskUsage.ToMap()
-	}
-	return ret
-}
-
 func (d *DiskUsages) ToDiskInfo() map[string]*master_pb.DiskInfo {
 	ret := make(map[string]*master_pb.DiskInfo)
 	for diskType, diskUsageCounts := range d.usages {
@@ -135,15 +125,6 @@ func (a *DiskUsageCounts) minus(b *DiskUsageCounts) *DiskUsageCounts {
 	}
 }
 
-func (diskUsage *DiskUsageCounts) ToMap() interface{} {
-	ret := make(map[string]interface{})
-	ret["Volumes"] = diskUsage.volumeCount
-	ret["EcShards"] = diskUsage.ecShardCount
-	ret["Max"] = diskUsage.maxVolumeCount
-	ret["Free"] = diskUsage.FreeSpace()
-	return ret
-}
-
 func (du *DiskUsages) getOrCreateDisk(diskType types.DiskType) *DiskUsageCounts {
 	du.Lock()
 	defer du.Unlock()

From 60d7b809c14e2f5b903a704fbc2c9ed16948248e Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 02:40:30 -0800
Subject: [PATCH 112/140] add back actions

---
 .github/workflows/cleanup.yml | 22 ++++++++++
 .github/workflows/release.yml | 76 +++++++++++++++++------------------
 2 files changed, 58 insertions(+), 40 deletions(-)
 create mode 100644 .github/workflows/cleanup.yml

diff --git a/.github/workflows/cleanup.yml b/.github/workflows/cleanup.yml
new file mode 100644
index 000000000..47a677e6d
--- /dev/null
+++ b/.github/workflows/cleanup.yml
@@ -0,0 +1,22 @@
+name: Cleanup
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+
+      - name: Delete old release assets
+        uses: mknejp/delete-release-assets@v1
+        with:
+          token: ${{ github.token }}
+          tag: dev
+          fail-if-no-assets: false
+          assets: |
+            weed-*
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7439fb604..0681f3dac 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,7 +13,7 @@ jobs:
       matrix:
         goos: [linux, windows, darwin, freebsd ]
         goarch: [amd64, arm]
-        exclude:  
+        exclude:
           - goarch: arm
             goos: darwin
           - goarch: arm
@@ -21,46 +21,42 @@ jobs:
 
     steps:
 
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
 
-    - name: Delete old release assets
-      uses: mknejp/delete-release-assets@v1
-      with:
-        token: ${{ github.token }}
-        tag: dev
-        fail-if-no-assets: false 
-        assets: | 
-          weed-*
+      - name: Wait for the deletion
+        uses: jakejarvis/wait-action@master
+        with:
+          time: '30s'
 
-    - name: Set BUILD_TIME env
-      run: echo BUILD_TIME=$(date -u +%Y-%m-%d-%H-%M) >> ${GITHUB_ENV}
+      - name: Set BUILD_TIME env
+        run: echo BUILD_TIME=$(date -u +%Y-%m-%d-%H-%M) >> ${GITHUB_ENV}
 
-    - name: Go Release Binaries
-      uses: wangyoucao577/go-release-action@v1.14
-      with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        goos: ${{ matrix.goos }}
-        goarch: ${{ matrix.goarch }}
-        release_tag: dev
-        overwrite: true 
-        build_flags: -tags 5BytesOffset # optional, default is 
-        ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
-        # Where to run `go build .`
-        project_path: weed
-        binary_name: weed-large-disk
-        asset_name: "weed-large-disk-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"
+      - name: Go Release Binaries
+        uses: wangyoucao577/go-release-action@v1.14
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: ${{ matrix.goos }}
+          goarch: ${{ matrix.goarch }}
+          release_tag: dev
+          overwrite: true
+          build_flags: -tags 5BytesOffset # optional, default is
+          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
+          # Where to run `go build .`
+          project_path: weed
+          binary_name: weed-large-disk
+          asset_name: "weed-large-disk-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"
 
-    - name: Go Release Binaries
-      uses: wangyoucao577/go-release-action@v1.14
-      with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        goos: ${{ matrix.goos }}
-        goarch: ${{ matrix.goarch }}
-        release_tag: dev
-        overwrite: true 
-        ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
-        # Where to run `go build .`
-        project_path: weed
-        binary_name: weed-
-        asset_name: "weed-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"
+      - name: Go Release Binaries
+        uses: wangyoucao577/go-release-action@v1.14
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: ${{ matrix.goos }}
+          goarch: ${{ matrix.goarch }}
+          release_tag: dev
+          overwrite: true
+          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
+          # Where to run `go build .`
+          project_path: weed
+          binary_name: weed-
+          asset_name: "weed-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"

From f465d63b5d3577052243c5c24668d0f40930a923 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 03:37:29 -0800
Subject: [PATCH 113/140] grpc should fail when heart beating to master

fix https://github.com/chrislusf/seaweedfs/issues/1820
---
 weed/pb/grpc_client_server.go | 1 -
 1 file changed, 1 deletion(-)

diff --git a/weed/pb/grpc_client_server.go b/weed/pb/grpc_client_server.go
index ec49d177b..910114313 100644
--- a/weed/pb/grpc_client_server.go
+++ b/weed/pb/grpc_client_server.go
@@ -64,7 +64,6 @@ func GrpcDial(ctx context.Context, address string, opts ...grpc.DialOption) (*gr
 		grpc.WithDefaultCallOptions(
 			grpc.MaxCallSendMsgSize(Max_Message_Size),
 			grpc.MaxCallRecvMsgSize(Max_Message_Size),
-			grpc.WaitForReady(true),
 		),
 		grpc.WithKeepaliveParams(keepalive.ClientParameters{
 			Time:                30 * time.Second, // client ping server if no activity for this long

From b961cd6208104641c5d7ae41bff3498a48ee3279 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 03:39:19 -0800
Subject: [PATCH 114/140] add WIP message

---
 weed/shell/command_volume_tier_move.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
index 3c6c31eac..27c6815d4 100644
--- a/weed/shell/command_volume_tier_move.go
+++ b/weed/shell/command_volume_tier_move.go
@@ -20,11 +20,11 @@ type commandVolumeTierMove struct {
 }
 
 func (c *commandVolumeTierMove) Name() string {
-	return "volume.tier.upload"
+	return "volume.tier.move"
 }
 
 func (c *commandVolumeTierMove) Help() string {
-	return `change a volume from one disk type to another
+	return `<WIP> change a volume from one disk type to another
 
 	volume.tier.move -source=hdd -target=ssd [-collection=""] [-fullPercent=95] [-quietFor=1h]
 	volume.tier.move -target=hdd [-collection=""] -volumeId=<volume_id>

From a1210d1e8d923aa2415a2f3aa91643b7e1686091 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 03:56:27 -0800
Subject: [PATCH 115/140] Revert "volume: avoid file.stat(), file.seek() if
 possible during writes"

This reverts commit c78409a5983145784d128c86541c6715dad3a937.
---
 weed/storage/backend/disk_file.go | 23 ++---------------------
 weed/storage/needle_map.go        | 16 ++++------------
 2 files changed, 6 insertions(+), 33 deletions(-)

diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 6a42ad8e7..2b04c8df2 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -12,8 +12,6 @@ var (
 type DiskFile struct {
 	File         *os.File
 	fullFilePath string
-	fileSize     int64
-	modTime      time.Time
 }
 
 func NewDiskFile(f *os.File) *DiskFile {
@@ -28,24 +26,11 @@ func (df *DiskFile) ReadAt(p []byte, off int64) (n int, err error) {
 }
 
 func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
-	n, err = df.File.WriteAt(p, off)
-	if err == nil {
-		waterMark := off + int64(n)
-		if waterMark > df.fileSize {
-			df.fileSize = waterMark
-			df.modTime = time.Now()
-		}
-	}
-	return
+	return df.File.WriteAt(p, off)
 }
 
 func (df *DiskFile) Truncate(off int64) error {
-	err := df.File.Truncate(off)
-	if err == nil {
-		df.fileSize = off
-		df.modTime = time.Now()
-	}
-	return err
+	return df.File.Truncate(off)
 }
 
 func (df *DiskFile) Close() error {
@@ -53,9 +38,6 @@ func (df *DiskFile) Close() error {
 }
 
 func (df *DiskFile) GetStat() (datSize int64, modTime time.Time, err error) {
-	if df.fileSize != 0 {
-		return df.fileSize, df.modTime, nil
-	}
 	stat, e := df.File.Stat()
 	if e == nil {
 		return stat.Size(), stat.ModTime(), nil
@@ -68,6 +50,5 @@ func (df *DiskFile) Name() string {
 }
 
 func (df *DiskFile) Sync() error {
-	df.fileSize = 0
 	return df.File.Sync()
 }
diff --git a/weed/storage/needle_map.go b/weed/storage/needle_map.go
index f12198c57..5b41286ea 100644
--- a/weed/storage/needle_map.go
+++ b/weed/storage/needle_map.go
@@ -41,7 +41,6 @@ type baseNeedleMapper struct {
 
 	indexFile           *os.File
 	indexFileAccessLock sync.Mutex
-	indexFileOffset     int64
 }
 
 func (nm *baseNeedleMapper) IndexFileSize() uint64 {
@@ -57,18 +56,11 @@ func (nm *baseNeedleMapper) appendToIndexFile(key NeedleId, offset Offset, size
 
 	nm.indexFileAccessLock.Lock()
 	defer nm.indexFileAccessLock.Unlock()
-	if nm.indexFileOffset == 0 {
-		if fileSize, err := nm.indexFile.Seek(0, 2); err != nil {
-			return fmt.Errorf("cannot seek end of indexfile %s: %v",
-				nm.indexFile.Name(), err)
-		} else {
-			nm.indexFileOffset = fileSize
-		}
-	}
-	written, err := nm.indexFile.WriteAt(bytes, nm.indexFileOffset)
-	if err == nil {
-		nm.indexFileOffset += int64(written)
+	if _, err := nm.indexFile.Seek(0, 2); err != nil {
+		return fmt.Errorf("cannot seek end of indexfile %s: %v",
+			nm.indexFile.Name(), err)
 	}
+	_, err := nm.indexFile.Write(bytes)
 	return err
 }
 

From 6593a0f3d19659615754677c78430100c48f16ab Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 14:08:29 -0800
Subject: [PATCH 116/140] adjust

---
 docker/compose/local-mount-compose.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docker/compose/local-mount-compose.yml b/docker/compose/local-mount-compose.yml
index 4361d6d99..b1c579cdf 100644
--- a/docker/compose/local-mount-compose.yml
+++ b/docker/compose/local-mount-compose.yml
@@ -30,7 +30,7 @@ services:
   mount_1:
     image: chrislusf/seaweedfs:local
     privileged: true
-    entrypoint: '/bin/sh -c "mkdir -p t1 && mkdir -p cache/t1 && weed -v=4 mount -filer=filer:8888 -cacheDir=./cache/t1 -dir=./t1 -filer.path=/c1" -volumeServerAccess=filerProxy'
+    entrypoint: '/bin/sh -c "mkdir -p t1 && mkdir -p cache/t1 && weed -v=4 mount -filer=filer:8888 -cacheDir=./cache/t1 -dir=./t1 -filer.path=/c1 -volumeServerAccess=filerProxy"'
     depends_on:
       - master
       - volume
@@ -38,7 +38,7 @@ services:
   mount_2:
     image: chrislusf/seaweedfs:local
     privileged: true
-    entrypoint: '/bin/sh -c "mkdir -p t2 && mkdir -p cache/t2 && weed -v=4  mount -filer=filer:8888 -cacheDir=./cache/t2 -dir=./t2 -filer.path=/c1" -volumeServerAcess=publicUrl'
+    entrypoint: '/bin/sh -c "mkdir -p t2 && mkdir -p cache/t2 && weed -v=4  mount -filer=filer:8888 -cacheDir=./cache/t2 -dir=./t2 -filer.path=/c1 -volumeServerAcess=publicUrl"'
     depends_on:
       - master
       - volume

From a37473ae6096d73d6e4fbaaf7dc92422dd6f786c Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 14:22:12 -0800
Subject: [PATCH 117/140] add back volume ids

address https://github.com/chrislusf/seaweedfs/issues/1792#issuecomment-782339576
---
 weed/topology/data_node.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index d4ec94fbe..c249a9842 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -225,7 +225,7 @@ func (dn *DataNode) ToMap() interface{} {
 	ret["Volumes"] = volumeCount
 	ret["EcShards"] = ecShardCount
 	ret["Max"] = maxVolumeCount
-	ret["volumeIds"] = volumeIds
+	ret["VolumeIds"] = volumeIds
 
 	return ret
 }

From 565f7a6e724cf2dca401bd699a65f5814606ebfe Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 19 Feb 2021 14:22:36 -0800
Subject: [PATCH 118/140] Update data_node.go

---
 weed/topology/data_node.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index c249a9842..69f739dd5 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -219,7 +219,7 @@ func (dn *DataNode) ToMap() interface{} {
 
 	for _, disk := range dn.Children() {
 		d := disk.(*Disk)
-		volumeIds += d.GetVolumeIds()
+		volumeIds += " " + d.GetVolumeIds()
 	}
 
 	ret["Volumes"] = volumeCount

From 50df484d8611eb037285fa4458a5f056b6d345e9 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Sat, 20 Feb 2021 16:52:57 +0800
Subject: [PATCH 119/140] support command line arguments in a configuration
 file so we can `weed master -config=master.conf`, `weed volume
 -config=volume.conf` and etc.

---
 weed/command/command.go |    2 +-
 weed/glog/glog_file.go  |    2 +-
 weed/util/fla9/fla9.go  | 1148 +++++++++++++++++++++++++++++++++++++++
 weed/weed.go            |    2 +-
 4 files changed, 1151 insertions(+), 3 deletions(-)
 create mode 100644 weed/util/fla9/fla9.go

diff --git a/weed/command/command.go b/weed/command/command.go
index 3fa52c922..bbc2e0423 100644
--- a/weed/command/command.go
+++ b/weed/command/command.go
@@ -1,8 +1,8 @@
 package command
 
 import (
-	"flag"
 	"fmt"
+	flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
 	"os"
 	"strings"
 )
diff --git a/weed/glog/glog_file.go b/weed/glog/glog_file.go
index bb8e6902f..3f700d8fc 100644
--- a/weed/glog/glog_file.go
+++ b/weed/glog/glog_file.go
@@ -20,8 +20,8 @@ package glog
 
 import (
 	"errors"
-	"flag"
 	"fmt"
+	flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
 	"os"
 	"os/user"
 	"path/filepath"
diff --git a/weed/util/fla9/fla9.go b/weed/util/fla9/fla9.go
new file mode 100644
index 000000000..335b9ff7a
--- /dev/null
+++ b/weed/util/fla9/fla9.go
@@ -0,0 +1,1148 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+	Package flag implements command-line flag parsing.
+
+	Usage:
+
+	Define flags using flag.String(), Bool(), Int(), etc.
+
+	This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
+		import "flag"
+		var ip = flag.Int("flagname", 1234, "help message for flagname")
+	If you like, you can bind the flag to a variable using the Var() functions.
+		var flagvar int
+		func init() {
+			flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
+		}
+	Or you can create custom flags that satisfy the Value interface (with
+	pointer receivers) and couple them to flag parsing by
+		flag.Var(&flagVal, "name", "help message for flagname")
+	For such flags, the default value is just the initial value of the variable.
+
+	After all flags are defined, call
+		flag.Parse()
+	to parse the command line into the defined flags.
+
+	Flags may then be used directly. If you're using the flags themselves,
+	they are all pointers; if you bind to variables, they're values.
+		fmt.Println("ip has value ", *ip)
+		fmt.Println("flagvar has value ", flagvar)
+
+	After parsing, the arguments following the flags are available as the
+	slice flag.Args() or individually as flag.Arg(i).
+	The arguments are indexed from 0 through flag.NArg()-1.
+
+	Command line flag syntax:
+		-flag
+		-flag=x
+		-flag x  // non-boolean flags only
+	One or two minus signs may be used; they are equivalent.
+	The last form is not permitted for boolean flags because the
+	meaning of the command
+		cmd -x *
+	will change if there is a file called 0, false, etc.  You must
+	use the -flag=false form to turn off a boolean flag.
+
+	Flag parsing stops just before the first non-flag argument
+	("-" is a non-flag argument) or after the terminator "--".
+
+	Integer flags accept 1234, 0664, 0x1234 and may be negative.
+	Boolean flags may be:
+		1, 0, t, f, T, F, true, false, TRUE, FALSE, True, False
+	Duration flags accept any input valid for time.ParseDuration.
+
+	The default set of command-line flags is controlled by
+	top-level functions.  The FlagSet type allows one to define
+	independent sets of flags, such as to implement subcommands
+	in a command-line interface. The methods of FlagSet are
+	analogous to the top-level functions for the command-line
+	flag set.
+*/
+package fla9
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// ErrHelp is the error returned if the -help or -h flag is invoked
+// but no such flag is defined.
+var ErrHelp = errors.New("flag: help requested")
+
+// -- bool Value
+type boolValue bool
+
+func newBoolValue(val bool, p *bool) *boolValue {
+	*p = val
+	return (*boolValue)(p)
+}
+
+func (b *boolValue) Set(s string) error {
+	v, err := strconv.ParseBool(s)
+	*b = boolValue(v)
+	return err
+}
+
+func (b *boolValue) Get() interface{} { return bool(*b) }
+func (b *boolValue) String() string   { return fmt.Sprintf("%v", *b) }
+func (b *boolValue) IsBoolFlag() bool { return true }
+
+// optional interface to indicate boolean flags that can be
+// supplied without "=value" text
+type boolFlag interface {
+	Value
+	IsBoolFlag() bool
+}
+
+// -- int Value
+type intValue int
+
+func newIntValue(val int, p *int) *intValue {
+	*p = val
+	return (*intValue)(p)
+}
+
+func (i *intValue) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = intValue(v)
+	return err
+}
+
+func (i *intValue) Get() interface{} { return int(*i) }
+func (i *intValue) String() string   { return fmt.Sprintf("%v", *i) }
+
+// -- int64 Value
+type int64Value int64
+
+func newInt64Value(val int64, p *int64) *int64Value {
+	*p = val
+	return (*int64Value)(p)
+}
+
+func (i *int64Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = int64Value(v)
+	return err
+}
+
+func (i *int64Value) Get() interface{} { return int64(*i) }
+func (i *int64Value) String() string   { return fmt.Sprintf("%v", *i) }
+
+// -- uint Value
+type uintValue uint
+
+func newUintValue(val uint, p *uint) *uintValue {
+	*p = val
+	return (*uintValue)(p)
+}
+
+func (i *uintValue) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 64)
+	*i = uintValue(v)
+	return err
+}
+
+func (i *uintValue) Get() interface{} { return uint(*i) }
+func (i *uintValue) String() string   { return fmt.Sprintf("%v", *i) }
+
+// -- uint64 Value
+type uint64Value uint64
+
+func newUint64Value(val uint64, p *uint64) *uint64Value {
+	*p = val
+	return (*uint64Value)(p)
+}
+
+func (i *uint64Value) Set(s string) error {
+	v, err := strconv.ParseUint(s, 0, 64)
+	*i = uint64Value(v)
+	return err
+}
+
+func (i *uint64Value) Get() interface{} { return uint64(*i) }
+func (i *uint64Value) String() string   { return fmt.Sprintf("%v", *i) }
+
+// -- string Value
+type stringValue string
+
+func newStringValue(val string, p *string) *stringValue {
+	*p = val
+	return (*stringValue)(p)
+}
+
+func (s *stringValue) Set(val string) error {
+	*s = stringValue(val)
+	return nil
+}
+
+func (s *stringValue) Get() interface{} { return string(*s) }
+func (s *stringValue) String() string   { return fmt.Sprintf("%s", *s) }
+
+// -- float64 Value
+type float64Value float64
+
+func newFloat64Value(val float64, p *float64) *float64Value {
+	*p = val
+	return (*float64Value)(p)
+}
+
+func (f *float64Value) Set(s string) error {
+	v, err := strconv.ParseFloat(s, 64)
+	*f = float64Value(v)
+	return err
+}
+
+func (f *float64Value) Get() interface{} { return float64(*f) }
+func (f *float64Value) String() string   { return fmt.Sprintf("%v", *f) }
+
+// -- time.Duration Value
+type durationValue time.Duration
+
+func newDurationValue(val time.Duration, p *time.Duration) *durationValue {
+	*p = val
+	return (*durationValue)(p)
+}
+
+func (d *durationValue) Set(s string) error {
+	v, err := time.ParseDuration(s)
+	*d = durationValue(v)
+	return err
+}
+
+func (d *durationValue) Get() interface{} { return time.Duration(*d) }
+func (d *durationValue) String() string   { return (*time.Duration)(d).String() }
+
+// Value is the interface to the dynamic value stored in a flag.
+// (The default value is represented as a string.)
+//
+// If a Value has an IsBoolFlag() bool method returning true,
+// the command-line parser makes -name equivalent to -name=true
+// rather than using the next command-line argument.
+//
+// Set is called once, in command line order, for each flag present.
+type Value interface {
+	String() string
+	Set(string) error
+}
+
+// Getter is an interface that allows the contents of a Value to be retrieved.
+// It wraps the Value interface, rather than being part of it, because it
+// appeared after Go 1 and its compatibility rules. All Value types provided
+// by this package satisfy the Getter interface.
+type Getter interface {
+	Value
+	Get() interface{}
+}
+
+// ErrorHandling defines how FlagSet.Parse behaves if the parse fails.
+type ErrorHandling int
+
+// These constants cause FlagSet.Parse to behave as described if the parse fails.
+const (
+	ContinueOnError ErrorHandling = iota // Return a descriptive error.
+	ExitOnError                          // Call os.Exit(2).
+	PanicOnError                         // Call panic with a descriptive error.
+)
+
+// A FlagSet represents a set of defined flags. The zero value of a FlagSet
+// has no name and has ContinueOnError error handling.
+type FlagSet struct {
+	// Usage is the function called when an error occurs while parsing flags.
+	// The field is a function (not a method) that may be changed to point to
+	// a custom error handler.
+	Usage func()
+
+	name          string
+	parsed        bool
+	actual        map[string]*Flag
+	formal        map[string]*Flag
+	envPrefix     string   // prefix to all env variable names
+	args          []string // arguments after flags
+	errorHandling ErrorHandling
+	output        io.Writer // nil means stderr; use out() accessor
+}
+
+// A Flag represents the state of a flag.
+type Flag struct {
+	Name     string // name as it appears on command line
+	Usage    string // help message
+	Value    Value  // value as set
+	DefValue string // default value (as text); for usage message
+}
+
+// sortFlags returns the flags as a slice in lexicographical sorted order.
+func sortFlags(flags map[string]*Flag) []*Flag {
+	list := make(sort.StringSlice, len(flags))
+	i := 0
+	for _, f := range flags {
+		list[i] = f.Name
+		i++
+	}
+	list.Sort()
+	result := make([]*Flag, len(list))
+	for i, name := range list {
+		result[i] = flags[name]
+	}
+	return result
+}
+
+func (f *FlagSet) out() io.Writer {
+	if f.output == nil {
+		return os.Stderr
+	}
+	return f.output
+}
+
+// SetOutput sets the destination for usage and error messages.
+// If output is nil, os.Stderr is used.
+func (f *FlagSet) SetOutput(output io.Writer) { f.output = output }
+
+// VisitAll visits the flags in lexicographical order, calling fn for each.
+// It visits all flags, even those not set.
+func (f *FlagSet) VisitAll(fn func(*Flag)) {
+	for _, flag := range sortFlags(f.formal) {
+		fn(flag)
+	}
+}
+
+// VisitAll visits the command-line flags in lexicographical order, calling
+// fn for each. It visits all flags, even those not set.
+func VisitAll(fn func(*Flag)) { CommandLine.VisitAll(fn) }
+
+// Visit visits the flags in lexicographical order, calling fn for each.
+// It visits only those flags that have been set.
+func (f *FlagSet) Visit(fn func(*Flag)) {
+	for _, flag := range sortFlags(f.actual) {
+		fn(flag)
+	}
+}
+
+// Visit visits the command-line flags in lexicographical order, calling fn
+// for each. It visits only those flags that have been set.
+func Visit(fn func(*Flag)) { CommandLine.Visit(fn) }
+
+// Lookup returns the Flag structure of the named flag, returning nil if none exists.
+func (f *FlagSet) Lookup(name string) *Flag { return f.formal[name] }
+
+// Lookup returns the Flag structure of the named command-line flag,
+// returning nil if none exists.
+func Lookup(name string) *Flag { return CommandLine.formal[name] }
+
+// Set sets the value of the named flag.
+func (f *FlagSet) Set(name, value string) error {
+	flag, ok := f.formal[name]
+	if !ok {
+		return fmt.Errorf("no such flag -%v", name)
+	}
+	err := flag.Value.Set(value)
+	if err != nil {
+		return err
+	}
+	if f.actual == nil {
+		f.actual = make(map[string]*Flag)
+	}
+	f.actual[name] = flag
+	return nil
+}
+
+// Set sets the value of the named command-line flag.
+func Set(name, value string) error { return CommandLine.Set(name, value) }
+
+// isZeroValue guesses whether the string represents the zero
+// value for a flag. It is not accurate but in practice works OK.
+func isZeroValue(flag *Flag, value string) bool {
+	// Build a zero value of the flag's Value type, and see if the
+	// result of calling its String method equals the value passed in.
+	// This works unless the Value type is itself an interface type.
+	typ := reflect.TypeOf(flag.Value)
+	var z reflect.Value
+	if typ.Kind() == reflect.Ptr {
+		z = reflect.New(typ.Elem())
+	} else {
+		z = reflect.Zero(typ)
+	}
+	if value == z.Interface().(Value).String() {
+		return true
+	}
+
+	switch value {
+	case "false", "", "0":
+		return true
+	}
+	return false
+}
+
+// UnquoteUsage extracts a back-quoted name from the usage
+// string for a flag and returns it and the un-quoted usage.
+// Given "a `name` to show" it returns ("name", "a name to show").
+// If there are no back quotes, the name is an educated guess of the
+// type of the flag's value, or the empty string if the flag is boolean.
+func UnquoteUsage(flag *Flag) (name string, usage string) {
+	// Look for a back-quoted name, but avoid the strings package.
+	usage = flag.Usage
+	for i := 0; i < len(usage); i++ {
+		if usage[i] == '`' {
+			for j := i + 1; j < len(usage); j++ {
+				if usage[j] == '`' {
+					name = usage[i+1 : j]
+					usage = usage[:i] + name + usage[j+1:]
+					return name, usage
+				}
+			}
+			break // Only one back quote; use type name.
+		}
+	}
+	// No explicit name, so use type if we can find one.
+	name = "value"
+	switch flag.Value.(type) {
+	case boolFlag:
+		name = ""
+	case *durationValue:
+		name = "duration"
+	case *float64Value:
+		name = "float"
+	case *intValue, *int64Value:
+		name = "int"
+	case *stringValue:
+		name = "string"
+	case *uintValue, *uint64Value:
+		name = "uint"
+	}
+	return
+}
+
+// PrintDefaults prints to standard error the default values of all
+// defined command-line flags in the set. See the documentation for
+// the global function PrintDefaults for more information.
+func (f *FlagSet) PrintDefaults() {
+	f.VisitAll(func(flag *Flag) {
+		s := fmt.Sprintf("  -%s", flag.Name) // Two spaces before -; see next two comments.
+		name, usage := UnquoteUsage(flag)
+		if len(name) > 0 {
+			s += " " + name
+		}
+		// Boolean flags of one ASCII letter are so common we
+		// treat them specially, putting their usage on the same line.
+		if len(s) <= 4 { // space, space, '-', 'x'.
+			s += "\t"
+		} else {
+			// Four spaces before the tab triggers good alignment
+			// for both 4- and 8-space tab stops.
+			s += "\n    \t"
+		}
+		s += usage
+		if !isZeroValue(flag, flag.DefValue) {
+			if _, ok := flag.Value.(*stringValue); ok {
+				// put quotes on the value
+				s += fmt.Sprintf(" (default %q)", flag.DefValue)
+			} else {
+				s += fmt.Sprintf(" (default %v)", flag.DefValue)
+			}
+		}
+		fmt.Fprint(f.out(), s, "\n")
+	})
+}
+
+// PrintDefaults prints, to standard error unless configured otherwise,
+// a usage message showing the default settings of all defined
+// command-line flags.
+// For an integer valued flag x, the default output has the form
+//	-x int
+//		usage-message-for-x (default 7)
+// The usage message will appear on a separate line for anything but
+// a bool flag with a one-byte name. For bool flags, the type is
+// omitted and if the flag name is one byte the usage message appears
+// on the same line. The parenthetical default is omitted if the
+// default is the zero value for the type. The listed type, here int,
+// can be changed by placing a back-quoted name in the flag's usage
+// string; the first such item in the message is taken to be a parameter
+// name to show in the message and the back quotes are stripped from
+// the message when displayed. For instance, given
+//	flag.String("I", "", "search `directory` for include files")
+// the output will be
+//	-I directory
+//		search directory for include files.
+func PrintDefaults() { CommandLine.PrintDefaults() }
+
+// defaultUsage is the default function to print a usage message.
+func defaultUsage(f *FlagSet) {
+	if f.name == "" {
+		fmt.Fprintf(f.out(), "Usage:\n")
+	} else {
+		fmt.Fprintf(f.out(), "Usage of %s:\n", f.name)
+	}
+	f.PrintDefaults()
+}
+
+// NOTE: Usage is not just defaultUsage(CommandLine)
+// because it serves (via godoc flag Usage) as the example
+// for how to write your own usage function.
+
+// Usage prints to standard error a usage message documenting all defined command-line flags.
+// It is called when an error occurs while parsing flags.
+// The function is a variable that may be changed to point to a custom function.
+// By default it prints a simple header and calls PrintDefaults; for details about the
+// format of the output and how to control it, see the documentation for PrintDefaults.
+var Usage = func() {
+	fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
+	PrintDefaults()
+}
+
+// NFlag returns the number of flags that have been set.
+func (f *FlagSet) NFlag() int { return len(f.actual) }
+
+// NFlag returns the number of command-line flags that have been set.
+func NFlag() int { return len(CommandLine.actual) }
+
+// Arg returns the i'th argument. Arg(0) is the first remaining argument
+// after flags have been processed. Arg returns an empty string if the
+// requested element does not exist.
+func (f *FlagSet) Arg(i int) string {
+	if i < 0 || i >= len(f.args) {
+		return ""
+	}
+	return f.args[i]
+}
+
+// Arg returns the i'th command-line argument. Arg(0) is the first remaining argument
+// after flags have been processed. Arg returns an empty string if the
+// requested element does not exist.
+func Arg(i int) string { return CommandLine.Arg(i) }
+
+// NArg is the number of arguments remaining after flags have been processed.
+func (f *FlagSet) NArg() int { return len(f.args) }
+
+// NArg is the number of arguments remaining after flags have been processed.
+func NArg() int { return len(CommandLine.args) }
+
+// Args returns the non-flag arguments.
+func (f *FlagSet) Args() []string { return f.args }
+
+// Args returns the non-flag command-line arguments.
+func Args() []string { return CommandLine.args }
+
+// BoolVar defines a bool flag with specified name, default value, and usage string.
+// The argument p points to a bool variable in which to store the value of the flag.
+func (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) {
+	f.Var(newBoolValue(value, p), name, usage)
+}
+
+// BoolVar defines a bool flag with specified name, default value, and usage string.
+// The argument p points to a bool variable in which to store the value of the flag.
+func BoolVar(p *bool, name string, value bool, usage string) {
+	CommandLine.Var(newBoolValue(value, p), name, usage)
+}
+
+// Bool defines a bool flag with specified name, default value, and usage string.
+// The return value is the address of a bool variable that stores the value of the flag.
+func (f *FlagSet) Bool(name string, value bool, usage string) *bool {
+	p := new(bool)
+	f.BoolVar(p, name, value, usage)
+	return p
+}
+
+// Bool defines a bool flag with specified name, default value, and usage string.
+// The return value is the address of a bool variable that stores the value of the flag.
+func Bool(name string, value bool, usage string) *bool {
+	return CommandLine.Bool(name, value, usage)
+}
+
+// IntVar defines an int flag with specified name, default value, and usage string.
+// The argument p points to an int variable in which to store the value of the flag.
+func (f *FlagSet) IntVar(p *int, name string, value int, usage string) {
+	f.Var(newIntValue(value, p), name, usage)
+}
+
+// IntVar defines an int flag with specified name, default value, and usage string.
+// The argument p points to an int variable in which to store the value of the flag.
+func IntVar(p *int, name string, value int, usage string) {
+	CommandLine.Var(newIntValue(value, p), name, usage)
+}
+
+// Int defines an int flag with specified name, default value, and usage string.
+// The return value is the address of an int variable that stores the value of the flag.
+func (f *FlagSet) Int(name string, value int, usage string) *int {
+	p := new(int)
+	f.IntVar(p, name, value, usage)
+	return p
+}
+
+// Int defines an int flag with specified name, default value, and usage string.
+// The return value is the address of an int variable that stores the value of the flag.
+func Int(name string, value int, usage string) *int {
+	return CommandLine.Int(name, value, usage)
+}
+
+// Int64Var defines an int64 flag with specified name, default value, and usage string.
+// The argument p points to an int64 variable in which to store the value of the flag.
+func (f *FlagSet) Int64Var(p *int64, name string, value int64, usage string) {
+	f.Var(newInt64Value(value, p), name, usage)
+}
+
+// Int64Var defines an int64 flag with specified name, default value, and usage string.
+// The argument p points to an int64 variable in which to store the value of the flag.
+func Int64Var(p *int64, name string, value int64, usage string) {
+	CommandLine.Var(newInt64Value(value, p), name, usage)
+}
+
+// Int64 defines an int64 flag with specified name, default value, and usage string.
+// The return value is the address of an int64 variable that stores the value of the flag.
+func (f *FlagSet) Int64(name string, value int64, usage string) *int64 {
+	p := new(int64)
+	f.Int64Var(p, name, value, usage)
+	return p
+}
+
+// Int64 defines an int64 flag with specified name, default value, and usage string.
+// The return value is the address of an int64 variable that stores the value of the flag.
+func Int64(name string, value int64, usage string) *int64 {
+	return CommandLine.Int64(name, value, usage)
+}
+
+// UintVar defines a uint flag with specified name, default value, and usage string.
+// The argument p points to a uint variable in which to store the value of the flag.
+func (f *FlagSet) UintVar(p *uint, name string, value uint, usage string) {
+	f.Var(newUintValue(value, p), name, usage)
+}
+
+// UintVar defines a uint flag with specified name, default value, and usage string.
+// The argument p points to a uint  variable in which to store the value of the flag.
+func UintVar(p *uint, name string, value uint, usage string) {
+	CommandLine.Var(newUintValue(value, p), name, usage)
+}
+
+// Uint defines a uint flag with specified name, default value, and usage string.
+// The return value is the address of a uint  variable that stores the value of the flag.
+func (f *FlagSet) Uint(name string, value uint, usage string) *uint {
+	p := new(uint)
+	f.UintVar(p, name, value, usage)
+	return p
+}
+
+// Uint defines a uint flag with specified name, default value, and usage string.
+// The return value is the address of a uint  variable that stores the value of the flag.
+func Uint(name string, value uint, usage string) *uint { return CommandLine.Uint(name, value, usage) }
+
+// Uint64Var defines a uint64 flag with specified name, default value, and usage string.
+// The argument p points to a uint64 variable in which to store the value of the flag.
+func (f *FlagSet) Uint64Var(p *uint64, name string, value uint64, usage string) {
+	f.Var(newUint64Value(value, p), name, usage)
+}
+
+// Uint64Var defines a uint64 flag with specified name, default value, and usage string.
+// The argument p points to a uint64 variable in which to store the value of the flag.
+func Uint64Var(p *uint64, name string, value uint64, usage string) {
+	CommandLine.Var(newUint64Value(value, p), name, usage)
+}
+
+// Uint64 defines a uint64 flag with specified name, default value, and usage string.
+// The return value is the address of a uint64 variable that stores the value of the flag.
+func (f *FlagSet) Uint64(name string, value uint64, usage string) *uint64 {
+	p := new(uint64)
+	f.Uint64Var(p, name, value, usage)
+	return p
+}
+
+// Uint64 defines a uint64 flag with specified name, default value, and usage string.
+// The return value is the address of a uint64 variable that stores the value of the flag.
+func Uint64(name string, value uint64, usage string) *uint64 {
+	return CommandLine.Uint64(name, value, usage)
+}
+
+// StringVar defines a string flag with specified name, default value, and usage string.
+// The argument p points to a string variable in which to store the value of the flag.
+func (f *FlagSet) StringVar(p *string, name, value, usage string) {
+	f.Var(newStringValue(value, p), name, usage)
+}
+
+// StringVar defines a string flag with specified name, default value, and usage string.
+// The argument p points to a string variable in which to store the value of the flag.
+func StringVar(p *string, name, value, usage string) {
+	CommandLine.Var(newStringValue(value, p), name, usage)
+}
+
+// String defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a string variable that stores the value of the flag.
+func (f *FlagSet) String(name, value, usage string) *string {
+	p := new(string)
+	f.StringVar(p, name, value, usage)
+	return p
+}
+
+// String defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a string variable that stores the value of the flag.
+func String(name, value, usage string) *string {
+	return CommandLine.String(name, value, usage)
+}
+
+// Float64Var defines a float64 flag with specified name, default value, and usage string.
+// The argument p points to a float64 variable in which to store the value of the flag.
+func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) {
+	f.Var(newFloat64Value(value, p), name, usage)
+}
+
+// Float64Var defines a float64 flag with specified name, default value, and usage string.
+// The argument p points to a float64 variable in which to store the value of the flag.
+func Float64Var(p *float64, name string, value float64, usage string) {
+	CommandLine.Var(newFloat64Value(value, p), name, usage)
+}
+
+// Float64 defines a float64 flag with specified name, default value, and usage string.
+// The return value is the address of a float64 variable that stores the value of the flag.
+func (f *FlagSet) Float64(name string, value float64, usage string) *float64 {
+	p := new(float64)
+	f.Float64Var(p, name, value, usage)
+	return p
+}
+
+// Float64 defines a float64 flag with specified name, default value, and usage string.
+// The return value is the address of a float64 variable that stores the value of the flag.
+func Float64(name string, value float64, usage string) *float64 {
+	return CommandLine.Float64(name, value, usage)
+}
+
+// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
+// The argument p points to a time.Duration variable in which to store the value of the flag.
+// The flag accepts a value acceptable to time.ParseDuration.
+func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
+	f.Var(newDurationValue(value, p), name, usage)
+}
+
+// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
+// The argument p points to a time.Duration variable in which to store the value of the flag.
+// The flag accepts a value acceptable to time.ParseDuration.
+func DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
+	CommandLine.Var(newDurationValue(value, p), name, usage)
+}
+
+// Duration defines a time.Duration flag with specified name, default value, and usage string.
+// The return value is the address of a time.Duration variable that stores the value of the flag.
+// The flag accepts a value acceptable to time.ParseDuration.
+func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time.Duration {
+	p := new(time.Duration)
+	f.DurationVar(p, name, value, usage)
+	return p
+}
+
+// Duration defines a time.Duration flag with specified name, default value, and usage string.
+// The return value is the address of a time.Duration variable that stores the value of the flag.
+// The flag accepts a value acceptable to time.ParseDuration.
+func Duration(name string, value time.Duration, usage string) *time.Duration {
+	return CommandLine.Duration(name, value, usage)
+}
+
+// Var defines a flag with the specified name and usage string. The type and
+// value of the flag are represented by the first argument, of type Value, which
+// typically holds a user-defined implementation of Value. For instance, the
+// caller could create a flag that turns a comma-separated string into a slice
+// of strings by giving the slice the methods of Value; in particular, Set would
+// decompose the comma-separated string into the slice.
+func (f *FlagSet) Var(value Value, name string, usage string) {
+	// Remember the default value as a string; it won't change.
+	flag := &Flag{name, usage, value, value.String()}
+	_, alreadythere := f.formal[name]
+	if alreadythere {
+		var msg string
+		if f.name == "" {
+			msg = fmt.Sprintf("flag redefined: %s", name)
+		} else {
+			msg = fmt.Sprintf("%s flag redefined: %s", f.name, name)
+		}
+		fmt.Fprintln(f.out(), msg)
+		panic(msg) // Happens only if flags are declared with identical names
+	}
+	if f.formal == nil {
+		f.formal = make(map[string]*Flag)
+	}
+	f.formal[name] = flag
+}
+
+// Var defines a flag with the specified name and usage string. The type and
+// value of the flag are represented by the first argument, of type Value, which
+// typically holds a user-defined implementation of Value. For instance, the
+// caller could create a flag that turns a comma-separated string into a slice
+// of strings by giving the slice the methods of Value; in particular, Set would
+// decompose the comma-separated string into the slice.
+func Var(value Value, name, usage string) {
+	CommandLine.Var(value, name, usage)
+}
+
+// failf prints to standard error a formatted error and usage message and
+// returns the error.
+func (f *FlagSet) failf(format string, a ...interface{}) error {
+	err := fmt.Errorf(format, a...)
+	fmt.Fprintln(f.out(), err)
+	f.usage()
+	return err
+}
+
+// usage calls the Usage method for the flag set if one is specified,
+// or the appropriate default usage function otherwise.
+func (f *FlagSet) usage() {
+	if f.Usage == nil {
+		if f == CommandLine {
+			Usage()
+		} else {
+			defaultUsage(f)
+		}
+	} else {
+		f.Usage()
+	}
+}
+
+// parseOne parses one flag. It reports whether a flag was seen.
+func (f *FlagSet) parseOne() (bool, error) {
+	if len(f.args) == 0 {
+		return false, nil
+	}
+	s := f.args[0]
+	if len(s) < 2 || s[0] != '-' {
+		return false, nil
+	}
+	numMinuses := 1
+	if s[1] == '-' {
+		numMinuses++
+		if len(s) == 2 { // "--" terminates the flags
+			f.args = f.args[1:]
+			return false, nil
+		}
+	}
+	name := s[numMinuses:]
+	if len(name) == 0 || name[0] == '-' || name[0] == '=' {
+		return false, f.failf("bad flag syntax: %s", s)
+	}
+
+	// ignore go test flags
+	if strings.HasPrefix(name, "test.") {
+		return false, nil
+	}
+
+	// it's a flag. does it have an argument?
+	f.args = f.args[1:]
+	hasValue := false
+	value := ""
+	for i := 1; i < len(name); i++ { // equals cannot be first
+		if name[i] == '=' {
+			value = name[i+1:]
+			hasValue = true
+			name = name[0:i]
+			break
+		}
+	}
+	m := f.formal
+	flag, alreadythere := m[name] // BUG
+	if !alreadythere {
+		if name == "help" || name == "h" { // special case for nice help message.
+			f.usage()
+			return false, ErrHelp
+		}
+		return false, f.failf("flag provided but not defined: -%s", name)
+	}
+	if fv, ok := flag.Value.(boolFlag); ok && fv.IsBoolFlag() { // special case: doesn't need an arg
+		if hasValue {
+			if err := fv.Set(value); err != nil {
+				return false, f.failf("invalid boolean value %q for -%s: %v", value, name, err)
+			}
+		} else {
+			if err := fv.Set("true"); err != nil {
+				return false, f.failf("invalid boolean flag %s: %v", name, err)
+			}
+		}
+	} else {
+		// It must have a value, which might be the next argument.
+		if !hasValue && len(f.args) > 0 {
+			// value is the next arg
+			hasValue = true
+			value, f.args = f.args[0], f.args[1:]
+		}
+		if !hasValue {
+			return false, f.failf("flag needs an argument: -%s", name)
+		}
+		if err := flag.Value.Set(value); err != nil {
+			return false, f.failf("invalid value %q for flag -%s: %v", value, name, err)
+		}
+	}
+	if f.actual == nil {
+		f.actual = make(map[string]*Flag)
+	}
+	f.actual[name] = flag
+	return true, nil
+}
+
+// Parse parses flag definitions from the argument list, which should not
+// include the command name. Must be called after all flags in the FlagSet
+// are defined and before flags are accessed by the program.
+// The return value will be ErrHelp if -help or -h were set but not defined.
+func (f *FlagSet) Parse(arguments []string) error {
+	if _, ok := f.formal[DefaultConfigFlagName]; !ok {
+		f.String(DefaultConfigFlagName, "", "config file")
+	}
+
+	f.parsed = true
+	f.args = arguments
+	for {
+		seen, err := f.parseOne()
+		if seen {
+			continue
+		}
+		if err == nil {
+			break
+		}
+		switch f.errorHandling {
+		case ContinueOnError:
+			return err
+		case ExitOnError:
+			os.Exit(2)
+		case PanicOnError:
+			panic(err)
+		}
+	}
+
+	// Parse environment variables
+	if err := f.ParseEnv(os.Environ()); err != nil {
+		switch f.errorHandling {
+		case ContinueOnError:
+			return err
+		case ExitOnError:
+			os.Exit(2)
+		case PanicOnError:
+			panic(err)
+		}
+		return err
+	}
+
+	// Parse configuration from file
+	var cFile string
+	if cf := f.formal[DefaultConfigFlagName]; cf != nil {
+		cFile = cf.Value.String()
+	}
+	if cf := f.actual[DefaultConfigFlagName]; cf != nil {
+		cFile = cf.Value.String()
+	}
+
+	if cFile == "" {
+		cFile = f.findConfigArgInUnresolved()
+	}
+
+	if cFile != "" {
+		if err := f.ParseFile(cFile, true); err != nil {
+			switch f.errorHandling {
+			case ContinueOnError:
+				return err
+			case ExitOnError:
+				os.Exit(2)
+			case PanicOnError:
+				panic(err)
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (f *FlagSet) findConfigArgInUnresolved() string {
+	configArg := "-" + DefaultConfigFlagName
+	for i := 0; i < len(f.args); i++ {
+		if strings.HasPrefix(f.args[i], configArg) {
+			if f.args[i] == configArg && i+1 < len(f.args) {
+				return f.args[i+1]
+			}
+
+			if strings.HasPrefix(f.args[i], configArg+"=") {
+				return f.args[i][len(configArg)+1:]
+				break
+			}
+		}
+	}
+	return ""
+}
+
+// Parsed reports whether f.Parse has been called.
+func (f *FlagSet) Parsed() bool { return f.parsed }
+
+// Parse parses the command-line flags from os.Args[1:].  Must be called
+// after all flags are defined and before flags are accessed by the program.
+func Parse() {
+	// Ignore errors; CommandLine is set for ExitOnError.
+	CommandLine.Parse(os.Args[1:])
+}
+
+// Parsed reports whether the command-line flags have been parsed.
+func Parsed() bool {
+	return CommandLine.Parsed()
+}
+
+// CommandLine is the default set of command-line flags, parsed from os.Args.
+// The top-level functions such as BoolVar, Arg, and so on are wrappers for the
+// methods of CommandLine.
+var CommandLine = NewFlagSet(os.Args[0], ExitOnError)
+
+// NewFlagSet returns a new, empty flag set with the specified name and
+// error handling property.
+func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet {
+	f := &FlagSet{
+		name:          name,
+		errorHandling: errorHandling,
+	}
+	return f
+}
+
+// Init sets the name and error handling property for a flag set.
+// By default, the zero FlagSet uses an empty name, EnvPrefix, and the
+// ContinueOnError error handling policy.
+func (f *FlagSet) Init(name string, errorHandling ErrorHandling) {
+	f.name = name
+	f.envPrefix = EnvPrefix
+	f.errorHandling = errorHandling
+}
+
+// EnvPrefix defines a string that will be implicitly prefixed to a
+// flag name before looking it up in the environment variables.
+var EnvPrefix = "WEED"
+
+// ParseEnv parses flags from environment variables.
+// Flags already set will be ignored.
+func (f *FlagSet) ParseEnv(environ []string) error {
+	env := make(map[string]string)
+	for _, s := range environ {
+		if i := strings.Index(s, "="); i >= 1 {
+			env[s[0:i]] = s[i+1:]
+		}
+	}
+
+	for _, flag := range f.formal {
+		name := flag.Name
+		if _, set := f.actual[name]; set {
+			continue
+		}
+
+		flag, alreadyThere := f.formal[name]
+		if !alreadyThere {
+			if name == "help" || name == "h" { // special case for nice help message.
+				f.usage()
+				return ErrHelp
+			}
+
+			return f.failf("environment variable provided but not defined: %s", name)
+		}
+
+		envKey := strings.ToUpper(flag.Name)
+		if f.envPrefix != "" {
+			envKey = f.envPrefix + "_" + envKey
+		}
+		envKey = strings.Replace(envKey, "-", "_", -1)
+
+		value, isSet := env[envKey]
+		if !isSet {
+			continue
+		}
+
+		if fv, ok := flag.Value.(boolFlag); ok && fv.IsBoolFlag() && value == "" {
+			// special case: doesn't need an arg
+			// flag without value is regarded a bool
+			value = ("true")
+		}
+		if err := flag.Value.Set(value); err != nil {
+			return f.failf("invalid value %q for environment variable %s: %v", value, name, err)
+		}
+
+		// update f.actual
+		if f.actual == nil {
+			f.actual = make(map[string]*Flag)
+		}
+		f.actual[name] = flag
+	}
+	return nil
+}
+
+// NewFlagSetWithEnvPrefix returns a new empty flag set with the specified name,
+// environment variable prefix, and error handling property.
+func NewFlagSetWithEnvPrefix(name string, prefix string, errorHandling ErrorHandling) *FlagSet {
+	f := NewFlagSet(name, errorHandling)
+	f.envPrefix = prefix
+	return f
+}
+
+// DefaultConfigFlagName defines the flag name of the optional config file
+// path. Used to lookup and parse the config file when a default is set and
+// available on disk.
+var DefaultConfigFlagName = "config"
+
+// ParseFile parses flags from the file in path.
+// Same format as commandline arguments, newlines and lines beginning with a
+// "#" character are ignored. Flags already set will be ignored.
+func (f *FlagSet) ParseFile(path string, ignoreUndefinedConf bool) error {
+	fp, err := os.Open(path) // Extract arguments from file
+	if err != nil {
+		return err
+	}
+	defer fp.Close()
+
+	scanner := bufio.NewScanner(fp)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+
+		// Ignore empty lines or comments
+		if line == "" || line[:1] == "#" || line[:1] == "//" || line[:1] == "--" {
+			continue
+		}
+
+		// Match `key=value` and `key value`
+		name, value := line, ""
+		for i, v := range line {
+			if v == '=' || v == ' ' || v == ':' {
+				name, value = strings.TrimSpace(line[:i]), strings.TrimSpace(line[i+1:])
+				break
+			}
+		}
+
+		name = strings.TrimPrefix(name, "-")
+
+		// Ignore flag when already set; arguments have precedence over file
+		if f.actual[name] != nil {
+			continue
+		}
+
+		flag, alreadyThere := f.formal[name]
+		if !alreadyThere {
+			if ignoreUndefinedConf {
+				continue
+			}
+
+			if name == "help" || name == "h" { // special case for nice help message.
+				f.usage()
+				return ErrHelp
+			}
+			return f.failf("configuration variable provided but not defined: %s", name)
+		}
+
+		if fv, ok := flag.Value.(boolFlag); ok && fv.IsBoolFlag() && value == "" {
+			// special case: doesn't need an arg
+			value = "true"
+		}
+
+		if err := flag.Value.Set(value); err != nil {
+			return f.failf("invalid value %q for configuration variable %s: %v", value, name, err)
+		}
+
+		// update f.actual
+		if f.actual == nil {
+			f.actual = make(map[string]*Flag)
+		}
+		f.actual[name] = flag
+	}
+
+	return scanner.Err()
+}
diff --git a/weed/weed.go b/weed/weed.go
index ecb0ba2a4..6e69c1480 100644
--- a/weed/weed.go
+++ b/weed/weed.go
@@ -4,8 +4,8 @@
 package main
 
 import (
-	"flag"
 	"fmt"
+	flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
 	"io"
 	"math/rand"
 	"os"

From a6d421508a39802cc1a91bed56f01180214d5e79 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Sat, 20 Feb 2021 16:57:07 +0800
Subject: [PATCH 120/140] revert ErrXyz to ErrorXyz temporarily.

---
 weed/server/volume_server_handlers_read.go   |  2 +-
 weed/storage/store_ec.go                     |  4 ++--
 weed/storage/volume_checking.go              |  4 ++--
 weed/storage/volume_read_write.go            | 12 ++++++------
 weed/util/chunk_cache/chunk_cache_on_disk.go |  2 +-
 weed/util/chunk_cache/on_disk_cache_layer.go |  2 +-
 6 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/weed/server/volume_server_handlers_read.go b/weed/server/volume_server_handlers_read.go
index 9604e7fe8..2db46ac9b 100644
--- a/weed/server/volume_server_handlers_read.go
+++ b/weed/server/volume_server_handlers_read.go
@@ -93,7 +93,7 @@ func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 	} else if hasEcVolume {
 		count, err = vs.store.ReadEcShardNeedle(volumeId, n)
 	}
-	if err != nil && err != storage.ErrDeleted && r.FormValue("type") != "replicate" && hasVolume {
+	if err != nil && err != storage.ErrorDeleted && r.FormValue("type") != "replicate" && hasVolume {
 		glog.V(4).Infof("read needle: %v", err)
 		// start to fix it from other replicas, if not deleted and hasVolume and is not a replicated request
 	}
diff --git a/weed/storage/store_ec.go b/weed/storage/store_ec.go
index 55b9a6fc6..a9b6a8ff3 100644
--- a/weed/storage/store_ec.go
+++ b/weed/storage/store_ec.go
@@ -130,7 +130,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, fmt.Errorf("locate in local ec volume: %v", err)
 			}
 			if size.IsDeleted() {
-				return 0, ErrDeleted
+				return 0, ErrorDeleted
 			}
 
 			glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToActualOffset(), size, intervals)
@@ -143,7 +143,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
 			}
 			if isDeleted {
-				return 0, ErrDeleted
+				return 0, ErrorDeleted
 			}
 
 			err = n.ReadBytes(bytes, offset.ToActualOffset(), size, localEcVolume.Version)
diff --git a/weed/storage/volume_checking.go b/weed/storage/volume_checking.go
index f6e75a07c..b76933083 100644
--- a/weed/storage/volume_checking.go
+++ b/weed/storage/volume_checking.go
@@ -30,7 +30,7 @@ func CheckAndFixVolumeDataIntegrity(v *Volume, indexFile *os.File) (lastAppendAt
 			healthyIndexSize = indexSize - int64(i)*NeedleMapEntrySize
 			continue
 		}
-		if err != ErrSizeMismatch {
+		if err != ErrorSizeMismatch {
 			break
 		}
 	}
@@ -94,7 +94,7 @@ func verifyNeedleIntegrity(datFile backend.BackendStorageFile, v needle.Version,
 		return 0, fmt.Errorf("read %s at %d", datFile.Name(), offset)
 	}
 	if n.Size != size {
-		return 0, ErrSizeMismatch
+		return 0, ErrorSizeMismatch
 	}
 	if v == needle.Version3 {
 		bytes := make([]byte, TimestampSize)
diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index 7076e198b..cbad4529b 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -15,9 +15,9 @@ import (
 	. "github.com/chrislusf/seaweedfs/weed/storage/types"
 )
 
-var ErrNotFound = errors.New("not found")
-var ErrDeleted = errors.New("already deleted")
-var ErrSizeMismatch = errors.New("size mismatch")
+var ErrorNotFound = errors.New("not found")
+var ErrorDeleted = errors.New("already deleted")
+var ErrorSizeMismatch = errors.New("size mismatch")
 
 func (v *Volume) checkReadWriteError(err error) {
 	if err == nil {
@@ -289,7 +289,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 
 	nv, ok := v.nm.Get(n.Id)
 	if !ok || nv.Offset.IsZero() {
-		return -1, ErrNotFound
+		return -1, ErrorNotFound
 	}
 	readSize := nv.Size
 	if readSize.IsDeleted() {
@@ -297,7 +297,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 			glog.V(3).Infof("reading deleted %s", n.String())
 			readSize = -readSize
 		} else {
-			return -1, ErrDeleted
+			return -1, ErrorDeleted
 		}
 	}
 	if readSize == 0 {
@@ -327,7 +327,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 	if time.Now().Before(time.Unix(0, int64(n.AppendAtNs)).Add(time.Duration(ttlMinutes) * time.Minute)) {
 		return bytesRead, nil
 	}
-	return -1, ErrNotFound
+	return -1, ErrorNotFound
 }
 
 func (v *Volume) startWorker() {
diff --git a/weed/util/chunk_cache/chunk_cache_on_disk.go b/weed/util/chunk_cache/chunk_cache_on_disk.go
index c9f7356d6..d724e925e 100644
--- a/weed/util/chunk_cache/chunk_cache_on_disk.go
+++ b/weed/util/chunk_cache/chunk_cache_on_disk.go
@@ -104,7 +104,7 @@ func (v *ChunkCacheVolume) GetNeedle(key types.NeedleId) ([]byte, error) {
 
 	nv, ok := v.nm.Get(key)
 	if !ok {
-		return nil, storage.ErrNotFound
+		return nil, storage.ErrorNotFound
 	}
 	data := make([]byte, nv.Size)
 	if readSize, readErr := v.DataBackend.ReadAt(data, nv.Offset.ToActualOffset()); readErr != nil {
diff --git a/weed/util/chunk_cache/on_disk_cache_layer.go b/weed/util/chunk_cache/on_disk_cache_layer.go
index 2e8f998f7..eebd89798 100644
--- a/weed/util/chunk_cache/on_disk_cache_layer.go
+++ b/weed/util/chunk_cache/on_disk_cache_layer.go
@@ -66,7 +66,7 @@ func (c *OnDiskCacheLayer) getChunk(needleId types.NeedleId) (data []byte) {
 
 	for _, diskCache := range c.diskCaches {
 		data, err = diskCache.GetNeedle(needleId)
-		if err == storage.ErrNotFound {
+		if err == storage.ErrorNotFound {
 			continue
 		}
 		if err != nil {

From ee7cdf366865f0e4e96b19bd3b2e0ec040fc8c87 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Sat, 20 Feb 2021 16:57:07 +0800
Subject: [PATCH 121/140] revert ErrXyz to ErrorXyz temporarily.

---
 weed/server/volume_server_handlers_read.go   |  2 +-
 weed/storage/needle/needle_read_write.go     |  4 ++--
 weed/storage/store_ec.go                     |  4 ++--
 weed/storage/volume_checking.go              |  4 ++--
 weed/storage/volume_read_write.go            | 14 +++++++-------
 weed/util/chunk_cache/chunk_cache_on_disk.go |  2 +-
 weed/util/chunk_cache/on_disk_cache_layer.go |  2 +-
 7 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/weed/server/volume_server_handlers_read.go b/weed/server/volume_server_handlers_read.go
index 9604e7fe8..2db46ac9b 100644
--- a/weed/server/volume_server_handlers_read.go
+++ b/weed/server/volume_server_handlers_read.go
@@ -93,7 +93,7 @@ func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 	} else if hasEcVolume {
 		count, err = vs.store.ReadEcShardNeedle(volumeId, n)
 	}
-	if err != nil && err != storage.ErrDeleted && r.FormValue("type") != "replicate" && hasVolume {
+	if err != nil && err != storage.ErrorDeleted && r.FormValue("type") != "replicate" && hasVolume {
 		glog.V(4).Infof("read needle: %v", err)
 		// start to fix it from other replicas, if not deleted and hasVolume and is not a replicated request
 	}
diff --git a/weed/storage/needle/needle_read_write.go b/weed/storage/needle/needle_read_write.go
index 4f8909faa..e758a6fee 100644
--- a/weed/storage/needle/needle_read_write.go
+++ b/weed/storage/needle/needle_read_write.go
@@ -24,7 +24,7 @@ const (
 	TtlBytesLength          = 2
 )
 
-var ErrSizeMismatch = errors.New("size mismatch")
+var ErrorSizeMismatch = errors.New("size mismatch")
 
 func (n *Needle) DiskSize(version Version) int64 {
 	return GetActualSize(n.Size, version)
@@ -173,7 +173,7 @@ func (n *Needle) ReadBytes(bytes []byte, offset int64, size Size, version Versio
 		// cookie is not always passed in for this API. Use size to do preliminary checking.
 		if OffsetSize == 4 && offset < int64(MaxPossibleVolumeSize) {
 			glog.Errorf("entry not found1: offset %d found id %x size %d, expected size %d", offset, n.Id, n.Size, size)
-			return ErrSizeMismatch
+			return ErrorSizeMismatch
 		}
 		return fmt.Errorf("entry not found: offset %d found id %x size %d, expected size %d", offset, n.Id, n.Size, size)
 	}
diff --git a/weed/storage/store_ec.go b/weed/storage/store_ec.go
index 55b9a6fc6..a9b6a8ff3 100644
--- a/weed/storage/store_ec.go
+++ b/weed/storage/store_ec.go
@@ -130,7 +130,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, fmt.Errorf("locate in local ec volume: %v", err)
 			}
 			if size.IsDeleted() {
-				return 0, ErrDeleted
+				return 0, ErrorDeleted
 			}
 
 			glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToActualOffset(), size, intervals)
@@ -143,7 +143,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
 				return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
 			}
 			if isDeleted {
-				return 0, ErrDeleted
+				return 0, ErrorDeleted
 			}
 
 			err = n.ReadBytes(bytes, offset.ToActualOffset(), size, localEcVolume.Version)
diff --git a/weed/storage/volume_checking.go b/weed/storage/volume_checking.go
index f6e75a07c..b76933083 100644
--- a/weed/storage/volume_checking.go
+++ b/weed/storage/volume_checking.go
@@ -30,7 +30,7 @@ func CheckAndFixVolumeDataIntegrity(v *Volume, indexFile *os.File) (lastAppendAt
 			healthyIndexSize = indexSize - int64(i)*NeedleMapEntrySize
 			continue
 		}
-		if err != ErrSizeMismatch {
+		if err != ErrorSizeMismatch {
 			break
 		}
 	}
@@ -94,7 +94,7 @@ func verifyNeedleIntegrity(datFile backend.BackendStorageFile, v needle.Version,
 		return 0, fmt.Errorf("read %s at %d", datFile.Name(), offset)
 	}
 	if n.Size != size {
-		return 0, ErrSizeMismatch
+		return 0, ErrorSizeMismatch
 	}
 	if v == needle.Version3 {
 		bytes := make([]byte, TimestampSize)
diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index 7076e198b..98a5f3a5a 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -15,9 +15,9 @@ import (
 	. "github.com/chrislusf/seaweedfs/weed/storage/types"
 )
 
-var ErrNotFound = errors.New("not found")
-var ErrDeleted = errors.New("already deleted")
-var ErrSizeMismatch = errors.New("size mismatch")
+var ErrorNotFound = errors.New("not found")
+var ErrorDeleted = errors.New("already deleted")
+var ErrorSizeMismatch = errors.New("size mismatch")
 
 func (v *Volume) checkReadWriteError(err error) {
 	if err == nil {
@@ -289,7 +289,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 
 	nv, ok := v.nm.Get(n.Id)
 	if !ok || nv.Offset.IsZero() {
-		return -1, ErrNotFound
+		return -1, ErrorNotFound
 	}
 	readSize := nv.Size
 	if readSize.IsDeleted() {
@@ -297,14 +297,14 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 			glog.V(3).Infof("reading deleted %s", n.String())
 			readSize = -readSize
 		} else {
-			return -1, ErrDeleted
+			return -1, ErrorDeleted
 		}
 	}
 	if readSize == 0 {
 		return 0, nil
 	}
 	err := n.ReadData(v.DataBackend, nv.Offset.ToActualOffset(), readSize, v.Version())
-	if err == needle.ErrSizeMismatch && OffsetSize == 4 {
+	if err == needle.ErrorSizeMismatch && OffsetSize == 4 {
 		// add special handling for .dat larger than 32GB, from git commit comment of
 		// 06c15ab3 Chris Lu <chris.lu@gmail.com> on 2020/10/28 at 4:11 上
 		err = n.ReadData(v.DataBackend, nv.Offset.ToActualOffset()+int64(MaxPossibleVolumeSize), readSize, v.Version())
@@ -327,7 +327,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 	if time.Now().Before(time.Unix(0, int64(n.AppendAtNs)).Add(time.Duration(ttlMinutes) * time.Minute)) {
 		return bytesRead, nil
 	}
-	return -1, ErrNotFound
+	return -1, ErrorNotFound
 }
 
 func (v *Volume) startWorker() {
diff --git a/weed/util/chunk_cache/chunk_cache_on_disk.go b/weed/util/chunk_cache/chunk_cache_on_disk.go
index c9f7356d6..d724e925e 100644
--- a/weed/util/chunk_cache/chunk_cache_on_disk.go
+++ b/weed/util/chunk_cache/chunk_cache_on_disk.go
@@ -104,7 +104,7 @@ func (v *ChunkCacheVolume) GetNeedle(key types.NeedleId) ([]byte, error) {
 
 	nv, ok := v.nm.Get(key)
 	if !ok {
-		return nil, storage.ErrNotFound
+		return nil, storage.ErrorNotFound
 	}
 	data := make([]byte, nv.Size)
 	if readSize, readErr := v.DataBackend.ReadAt(data, nv.Offset.ToActualOffset()); readErr != nil {
diff --git a/weed/util/chunk_cache/on_disk_cache_layer.go b/weed/util/chunk_cache/on_disk_cache_layer.go
index 2e8f998f7..eebd89798 100644
--- a/weed/util/chunk_cache/on_disk_cache_layer.go
+++ b/weed/util/chunk_cache/on_disk_cache_layer.go
@@ -66,7 +66,7 @@ func (c *OnDiskCacheLayer) getChunk(needleId types.NeedleId) (data []byte) {
 
 	for _, diskCache := range c.diskCaches {
 		data, err = diskCache.GetNeedle(needleId)
-		if err == storage.ErrNotFound {
+		if err == storage.ErrorNotFound {
 			continue
 		}
 		if err != nil {

From ee082ae40248fec560704c2d71d0f7138999f546 Mon Sep 17 00:00:00 2001
From: bingoohuang <bingoo.huang@gmail.com>
Date: Sat, 20 Feb 2021 16:59:38 +0800
Subject: [PATCH 122/140] revert comment temporarily

---
 weed/storage/volume_read_write.go | 2 --
 1 file changed, 2 deletions(-)

diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index 98a5f3a5a..07376bc88 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -305,8 +305,6 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
 	}
 	err := n.ReadData(v.DataBackend, nv.Offset.ToActualOffset(), readSize, v.Version())
 	if err == needle.ErrorSizeMismatch && OffsetSize == 4 {
-		// add special handling for .dat larger than 32GB, from git commit comment of
-		// 06c15ab3 Chris Lu <chris.lu@gmail.com> on 2020/10/28 at 4:11 上
 		err = n.ReadData(v.DataBackend, nv.Offset.ToActualOffset()+int64(MaxPossibleVolumeSize), readSize, v.Version())
 	}
 	v.checkReadWriteError(err)

From 98c93ca46587795fa03a0c52bea5be31a886be87 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 20 Feb 2021 09:44:17 -0800
Subject: [PATCH 123/140] avoid file.Stat()

avoid one Syscall, but did not help on performance though
---
 weed/storage/backend/disk_file.go | 33 ++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 2b04c8df2..161f4ca83 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -1,6 +1,7 @@
 package backend
 
 import (
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"os"
 	"time"
 )
@@ -12,12 +13,21 @@ var (
 type DiskFile struct {
 	File         *os.File
 	fullFilePath string
+	fileSize     int64
+	modTime      time.Time
 }
 
 func NewDiskFile(f *os.File) *DiskFile {
+	stat, err := f.Stat()
+	if err != nil {
+		glog.Fatalf("stat file %s: %v", f.Name(), err)
+	}
+
 	return &DiskFile{
 		fullFilePath: f.Name(),
 		File:         f,
+		fileSize:     stat.Size(),
+		modTime:      stat.ModTime(),
 	}
 }
 
@@ -26,11 +36,24 @@ func (df *DiskFile) ReadAt(p []byte, off int64) (n int, err error) {
 }
 
 func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
-	return df.File.WriteAt(p, off)
+	n, err = df.File.WriteAt(p, off)
+	if err == nil {
+		waterMark := off + int64(n)
+		if waterMark > df.fileSize {
+			df.fileSize = waterMark
+			df.modTime = time.Now()
+		}
+	}
+	return
 }
 
 func (df *DiskFile) Truncate(off int64) error {
-	return df.File.Truncate(off)
+	err := df.File.Truncate(off)
+	if err == nil {
+		df.fileSize = off
+		df.modTime = time.Now()
+	}
+	return err
 }
 
 func (df *DiskFile) Close() error {
@@ -38,11 +61,7 @@ func (df *DiskFile) Close() error {
 }
 
 func (df *DiskFile) GetStat() (datSize int64, modTime time.Time, err error) {
-	stat, e := df.File.Stat()
-	if e == nil {
-		return stat.Size(), stat.ModTime(), nil
-	}
-	return 0, time.Time{}, err
+	return df.fileSize, df.modTime, nil
 }
 
 func (df *DiskFile) Name() string {

From 1ad3200094bc08affd0bb640b24b83f15fedcebd Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 20 Feb 2021 12:39:25 -0800
Subject: [PATCH 124/140] skip seek() when index file writes

---
 weed/storage/needle/needle_read_write.go | 10 +++++++++-
 weed/storage/needle_map.go               |  9 ++++-----
 weed/storage/needle_map_leveldb.go       |  5 +++++
 weed/storage/needle_map_memory.go        |  5 +++++
 4 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/weed/storage/needle/needle_read_write.go b/weed/storage/needle/needle_read_write.go
index e758a6fee..0f72bc0bb 100644
--- a/weed/storage/needle/needle_read_write.go
+++ b/weed/storage/needle/needle_read_write.go
@@ -161,7 +161,15 @@ func ReadNeedleBlob(r backend.BackendStorageFile, offset int64, size Size, versi
 	dataSize := GetActualSize(size, version)
 	dataSlice = make([]byte, int(dataSize))
 
-	_, err = r.ReadAt(dataSlice, offset)
+	var n int
+	n, err = r.ReadAt(dataSlice, offset)
+	if err != nil && int64(n) == dataSize {
+		err = nil
+	}
+	if err != nil {
+		fileSize, _, _ := r.GetStat()
+		println("n",n, "dataSize", dataSize, "offset", offset, "fileSize", fileSize)
+	}
 	return dataSlice, err
 
 }
diff --git a/weed/storage/needle_map.go b/weed/storage/needle_map.go
index 5b41286ea..d35391f66 100644
--- a/weed/storage/needle_map.go
+++ b/weed/storage/needle_map.go
@@ -1,7 +1,6 @@
 package storage
 
 import (
-	"fmt"
 	"io"
 	"os"
 	"sync"
@@ -41,6 +40,7 @@ type baseNeedleMapper struct {
 
 	indexFile           *os.File
 	indexFileAccessLock sync.Mutex
+	indexFileOffset     int64
 }
 
 func (nm *baseNeedleMapper) IndexFileSize() uint64 {
@@ -56,11 +56,10 @@ func (nm *baseNeedleMapper) appendToIndexFile(key NeedleId, offset Offset, size
 
 	nm.indexFileAccessLock.Lock()
 	defer nm.indexFileAccessLock.Unlock()
-	if _, err := nm.indexFile.Seek(0, 2); err != nil {
-		return fmt.Errorf("cannot seek end of indexfile %s: %v",
-			nm.indexFile.Name(), err)
+	written, err := nm.indexFile.WriteAt(bytes, nm.indexFileOffset)
+	if err == nil {
+		nm.indexFileOffset += int64(written)
 	}
-	_, err := nm.indexFile.Write(bytes)
 	return err
 }
 
diff --git a/weed/storage/needle_map_leveldb.go b/weed/storage/needle_map_leveldb.go
index 415cd14dd..9716e9729 100644
--- a/weed/storage/needle_map_leveldb.go
+++ b/weed/storage/needle_map_leveldb.go
@@ -31,6 +31,11 @@ func NewLevelDbNeedleMap(dbFileName string, indexFile *os.File, opts *opt.Option
 		generateLevelDbFile(dbFileName, indexFile)
 		glog.V(1).Infof("Finished Generating %s from %s", dbFileName, indexFile.Name())
 	}
+	if stat, err := indexFile.Stat(); err != nil {
+		glog.Fatalf("stat file %s: %v", indexFile.Name(), err)
+	} else {
+		m.indexFileOffset = stat.Size()
+	}
 	glog.V(1).Infof("Opening %s...", dbFileName)
 
 	if m.db, err = leveldb.OpenFile(dbFileName, opts); err != nil {
diff --git a/weed/storage/needle_map_memory.go b/weed/storage/needle_map_memory.go
index d0891dc98..1b58708c6 100644
--- a/weed/storage/needle_map_memory.go
+++ b/weed/storage/needle_map_memory.go
@@ -19,6 +19,11 @@ func NewCompactNeedleMap(file *os.File) *NeedleMap {
 		m: needle_map.NewCompactMap(),
 	}
 	nm.indexFile = file
+	stat, err := file.Stat()
+	if err != nil {
+		glog.Fatalf("stat file %s: %v", file.Name(), err)
+	}
+	nm.indexFileOffset = stat.Size()
 	return nm
 }
 

From 7ef4c24f186f97d9a531849ed626ac1732437b77 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 20 Feb 2021 12:39:33 -0800
Subject: [PATCH 125/140] Revert "avoid file.Stat()"

This reverts commit 98c93ca46587795fa03a0c52bea5be31a886be87.
---
 weed/storage/backend/disk_file.go | 33 +++++++------------------------
 1 file changed, 7 insertions(+), 26 deletions(-)

diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 161f4ca83..2b04c8df2 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -1,7 +1,6 @@
 package backend
 
 import (
-	"github.com/chrislusf/seaweedfs/weed/glog"
 	"os"
 	"time"
 )
@@ -13,21 +12,12 @@ var (
 type DiskFile struct {
 	File         *os.File
 	fullFilePath string
-	fileSize     int64
-	modTime      time.Time
 }
 
 func NewDiskFile(f *os.File) *DiskFile {
-	stat, err := f.Stat()
-	if err != nil {
-		glog.Fatalf("stat file %s: %v", f.Name(), err)
-	}
-
 	return &DiskFile{
 		fullFilePath: f.Name(),
 		File:         f,
-		fileSize:     stat.Size(),
-		modTime:      stat.ModTime(),
 	}
 }
 
@@ -36,24 +26,11 @@ func (df *DiskFile) ReadAt(p []byte, off int64) (n int, err error) {
 }
 
 func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
-	n, err = df.File.WriteAt(p, off)
-	if err == nil {
-		waterMark := off + int64(n)
-		if waterMark > df.fileSize {
-			df.fileSize = waterMark
-			df.modTime = time.Now()
-		}
-	}
-	return
+	return df.File.WriteAt(p, off)
 }
 
 func (df *DiskFile) Truncate(off int64) error {
-	err := df.File.Truncate(off)
-	if err == nil {
-		df.fileSize = off
-		df.modTime = time.Now()
-	}
-	return err
+	return df.File.Truncate(off)
 }
 
 func (df *DiskFile) Close() error {
@@ -61,7 +38,11 @@ func (df *DiskFile) Close() error {
 }
 
 func (df *DiskFile) GetStat() (datSize int64, modTime time.Time, err error) {
-	return df.fileSize, df.modTime, nil
+	stat, e := df.File.Stat()
+	if e == nil {
+		return stat.Size(), stat.ModTime(), nil
+	}
+	return 0, time.Time{}, err
 }
 
 func (df *DiskFile) Name() string {

From a2383b3b12574eb45980b012b0515aab6e324cb8 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 20 Feb 2021 12:42:09 -0800
Subject: [PATCH 126/140] Revert "Revert "avoid file.Stat()""

This reverts commit 7ef4c24f186f97d9a531849ed626ac1732437b77.
---
 weed/storage/backend/disk_file.go | 33 ++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 2b04c8df2..161f4ca83 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -1,6 +1,7 @@
 package backend
 
 import (
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"os"
 	"time"
 )
@@ -12,12 +13,21 @@ var (
 type DiskFile struct {
 	File         *os.File
 	fullFilePath string
+	fileSize     int64
+	modTime      time.Time
 }
 
 func NewDiskFile(f *os.File) *DiskFile {
+	stat, err := f.Stat()
+	if err != nil {
+		glog.Fatalf("stat file %s: %v", f.Name(), err)
+	}
+
 	return &DiskFile{
 		fullFilePath: f.Name(),
 		File:         f,
+		fileSize:     stat.Size(),
+		modTime:      stat.ModTime(),
 	}
 }
 
@@ -26,11 +36,24 @@ func (df *DiskFile) ReadAt(p []byte, off int64) (n int, err error) {
 }
 
 func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
-	return df.File.WriteAt(p, off)
+	n, err = df.File.WriteAt(p, off)
+	if err == nil {
+		waterMark := off + int64(n)
+		if waterMark > df.fileSize {
+			df.fileSize = waterMark
+			df.modTime = time.Now()
+		}
+	}
+	return
 }
 
 func (df *DiskFile) Truncate(off int64) error {
-	return df.File.Truncate(off)
+	err := df.File.Truncate(off)
+	if err == nil {
+		df.fileSize = off
+		df.modTime = time.Now()
+	}
+	return err
 }
 
 func (df *DiskFile) Close() error {
@@ -38,11 +61,7 @@ func (df *DiskFile) Close() error {
 }
 
 func (df *DiskFile) GetStat() (datSize int64, modTime time.Time, err error) {
-	stat, e := df.File.Stat()
-	if e == nil {
-		return stat.Size(), stat.ModTime(), nil
-	}
-	return 0, time.Time{}, err
+	return df.fileSize, df.modTime, nil
 }
 
 func (df *DiskFile) Name() string {

From 1af6c96cd02c2c6ace9cc3a7995e12bd653ae8fc Mon Sep 17 00:00:00 2001
From: bingoo <bingoo.huang@gmail.com>
Date: Sun, 21 Feb 2021 10:46:01 +0800
Subject: [PATCH 127/140] fix log help

---
 weed/glog/glog.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/glog/glog.go b/weed/glog/glog.go
index f46632f1c..adb6ab5aa 100644
--- a/weed/glog/glog.go
+++ b/weed/glog/glog.go
@@ -74,8 +74,8 @@ import (
 	"bufio"
 	"bytes"
 	"errors"
-	"flag"
 	"fmt"
+	flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
 	"io"
 	stdLog "log"
 	"os"

From 7635f6b9fa5c4d9def4430577247857dfd9ad2f4 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 20 Feb 2021 20:06:06 -0800
Subject: [PATCH 128/140] disk file avoid file.Stat()

---
 unmaintained/change_superblock/change_superblock.go |  2 +-
 weed/storage/backend/disk_file.go                   | 11 ++++++++++-
 weed/storage/volume_vacuum.go                       |  2 +-
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/unmaintained/change_superblock/change_superblock.go b/unmaintained/change_superblock/change_superblock.go
index afe651c4e..56342a0cb 100644
--- a/unmaintained/change_superblock/change_superblock.go
+++ b/unmaintained/change_superblock/change_superblock.go
@@ -92,7 +92,7 @@ func main() {
 
 		header := superBlock.Bytes()
 
-		if n, e := datFile.WriteAt(header, 0); n == 0 || e != nil {
+		if n, e := datBackend.WriteAt(header, 0); n == 0 || e != nil {
 			glog.Fatalf("cannot write super block: %v", e)
 		}
 
diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 161f4ca83..498963c31 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -2,6 +2,7 @@ package backend
 
 import (
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	. "github.com/chrislusf/seaweedfs/weed/storage/types"
 	"os"
 	"time"
 )
@@ -22,11 +23,15 @@ func NewDiskFile(f *os.File) *DiskFile {
 	if err != nil {
 		glog.Fatalf("stat file %s: %v", f.Name(), err)
 	}
+	offset := stat.Size()
+	if offset%NeedlePaddingSize != 0 {
+		offset = offset + (NeedlePaddingSize - offset%NeedlePaddingSize)
+	}
 
 	return &DiskFile{
 		fullFilePath: f.Name(),
 		File:         f,
-		fileSize:     stat.Size(),
+		fileSize:     offset,
 		modTime:      stat.ModTime(),
 	}
 }
@@ -47,6 +52,10 @@ func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
 	return
 }
 
+func (df *DiskFile) Append(p []byte) (n int, err error) {
+	return df.WriteAt(p, df.fileSize)
+}
+
 func (df *DiskFile) Truncate(off int64) error {
 	err := df.File.Truncate(off)
 	if err == nil {
diff --git a/weed/storage/volume_vacuum.go b/weed/storage/volume_vacuum.go
index c17c9c937..0ee1e61c6 100644
--- a/weed/storage/volume_vacuum.go
+++ b/weed/storage/volume_vacuum.go
@@ -286,7 +286,7 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
 			if err != nil {
 				return fmt.Errorf("ReadNeedleBlob %s key %d offset %d size %d failed: %v", oldDatFile.Name(), key, increIdxEntry.offset.ToActualOffset(), increIdxEntry.size, err)
 			}
-			dst.Write(needleBytes)
+			dstDatBackend.Append(needleBytes)
 			util.Uint32toBytes(idxEntryBytes[8:12], uint32(offset/NeedlePaddingSize))
 		} else { //deleted needle
 			//fakeDelNeedle 's default Data field is nil

From 03c643aa6b31fdbcfaf00d69d003f2dc446f2557 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 20 Feb 2021 21:19:21 -0800
Subject: [PATCH 129/140] fix test

fileSize need to be divided by 8
---
 weed/storage/needle/needle_read_write_test.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/storage/needle/needle_read_write_test.go b/weed/storage/needle/needle_read_write_test.go
index 47582dd26..afcea5a05 100644
--- a/weed/storage/needle/needle_read_write_test.go
+++ b/weed/storage/needle/needle_read_write_test.go
@@ -48,7 +48,7 @@ func TestAppend(t *testing.T) {
 		int64  : -9223372036854775808 to 9223372036854775807
 	*/
 
-	fileSize := int64(4294967295) + 10000
+	fileSize := int64(4294967296) + 10000
 	tempFile.Truncate(fileSize)
 	defer func() {
 		tempFile.Close()

From d493d626ba3534686dfaabc5c49ee62d6fe9720a Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 21 Feb 2021 19:27:38 -0800
Subject: [PATCH 130/140] use basic file object to parse path

fix https://github.com/chrislusf/seaweedfs/issues/1825
---
 .../java/seaweedfs/client/FilerClient.java    | 33 +++++++++----------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/other/java/client/src/main/java/seaweedfs/client/FilerClient.java b/other/java/client/src/main/java/seaweedfs/client/FilerClient.java
index 58269d41f..c2ffe0ac6 100644
--- a/other/java/client/src/main/java/seaweedfs/client/FilerClient.java
+++ b/other/java/client/src/main/java/seaweedfs/client/FilerClient.java
@@ -4,8 +4,7 @@ import com.google.common.base.Strings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.nio.file.Path;
-import java.nio.file.Paths;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
@@ -94,9 +93,9 @@ public class FilerClient extends FilerGrpcClient {
         if ("/".equals(path)) {
             return true;
         }
-        Path pathObject = Paths.get(path);
-        String parent = pathObject.getParent().toString();
-        String name = pathObject.getFileName().toString();
+        File pathFile = new File(path);
+        String parent = pathFile.getParent();
+        String name = pathFile.getName();
 
         mkdirs(parent, mode, uid, gid, userName, groupNames);
 
@@ -115,13 +114,13 @@ public class FilerClient extends FilerGrpcClient {
 
     public boolean mv(String oldPath, String newPath) {
 
-        Path oldPathObject = Paths.get(oldPath);
-        String oldParent = oldPathObject.getParent().toString();
-        String oldName = oldPathObject.getFileName().toString();
+        File oldPathFile = new File(oldPath);
+        String oldParent = oldPathFile.getParent();
+        String oldName = oldPathFile.getName();
 
-        Path newPathObject = Paths.get(newPath);
-        String newParent = newPathObject.getParent().toString();
-        String newName = newPathObject.getFileName().toString();
+        File newPathFile = new File(newPath);
+        String newParent = newPathFile.getParent();
+        String newName = newPathFile.getName();
 
         return atomicRenameEntry(oldParent, oldName, newParent, newName);
 
@@ -129,9 +128,9 @@ public class FilerClient extends FilerGrpcClient {
 
     public boolean rm(String path, boolean isRecursive, boolean ignoreRecusiveError) {
 
-        Path pathObject = Paths.get(path);
-        String parent = pathObject.getParent().toString();
-        String name = pathObject.getFileName().toString();
+        File pathFile = new File(path);
+        String parent = pathFile.getParent();
+        String name = pathFile.getName();
 
         return deleteEntry(
                 parent,
@@ -148,9 +147,9 @@ public class FilerClient extends FilerGrpcClient {
 
     public boolean touch(String path, int mode, int uid, int gid, String userName, String[] groupNames) {
 
-        Path pathObject = Paths.get(path);
-        String parent = pathObject.getParent().toString();
-        String name = pathObject.getFileName().toString();
+        File pathFile = new File(path);
+        String parent = pathFile.getParent();
+        String name = pathFile.getName();
 
         FilerProto.Entry entry = lookupEntry(parent, name);
         if (entry == null) {

From 151c281f36f1523593ad2777fd66c347934d73fb Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 21 Feb 2021 19:29:27 -0800
Subject: [PATCH 131/140] 2.27

---
 k8s/seaweedfs/Chart.yaml  | 4 ++--
 k8s/seaweedfs/values.yaml | 2 +-
 weed/util/constants.go    | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/k8s/seaweedfs/Chart.yaml b/k8s/seaweedfs/Chart.yaml
index a16bb0133..ac56e337c 100644
--- a/k8s/seaweedfs/Chart.yaml
+++ b/k8s/seaweedfs/Chart.yaml
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.26"
-version: 2.26
+appVersion: "2.27"
+version: 2.27
diff --git a/k8s/seaweedfs/values.yaml b/k8s/seaweedfs/values.yaml
index 6dc182b29..f7cc521c8 100644
--- a/k8s/seaweedfs/values.yaml
+++ b/k8s/seaweedfs/values.yaml
@@ -4,7 +4,7 @@ global:
   registry: ""
   repository: ""
   imageName: chrislusf/seaweedfs
-  # imageTag: "2.26" - started using {.Chart.appVersion}
+  # imageTag: "2.27" - started using {.Chart.appVersion}
   imagePullPolicy: IfNotPresent
   imagePullSecrets: imagepullsecret
   restartPolicy: Always
diff --git a/weed/util/constants.go b/weed/util/constants.go
index 1900d3d42..908f782ae 100644
--- a/weed/util/constants.go
+++ b/weed/util/constants.go
@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 26)
+	VERSION = fmt.Sprintf("%s %d.%02d", sizeLimit, 2, 27)
 	COMMIT  = ""
 )
 

From 1c233ad986bbbf5de3394c734a1bafebaf67b9e0 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 00:28:42 -0800
Subject: [PATCH 132/140] refactoring

---
 weed/shell/command_ec_common.go               | 11 ++---
 weed/shell/command_ec_decode.go               |  6 +--
 weed/shell/command_ec_encode.go               | 11 ++---
 weed/shell/command_volume_balance.go          | 20 ++++-----
 .../command_volume_configure_replication.go   |  9 ++--
 weed/shell/command_volume_fix_replication.go  | 13 +++---
 weed/shell/command_volume_fsck.go             | 13 +++---
 weed/shell/command_volume_list.go             | 10 ++---
 weed/shell/command_volume_server_evacuate.go  | 22 ++++------
 weed/shell/command_volume_tier_download.go    |  2 +-
 weed/shell/command_volume_tier_move.go        | 44 ++++++++-----------
 11 files changed, 63 insertions(+), 98 deletions(-)

diff --git a/weed/shell/command_ec_common.go b/weed/shell/command_ec_common.go
index 87a138ab6..fd35bb14b 100644
--- a/weed/shell/command_ec_common.go
+++ b/weed/shell/command_ec_common.go
@@ -201,17 +201,14 @@ type EcRack struct {
 func collectEcNodes(commandEnv *CommandEnv, selectedDataCenter string) (ecNodes []*EcNode, totalFreeEcSlots int, err error) {
 
 	// list all possible locations
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
-		return nil, 0, err
+		return
 	}
 
 	// find out all volume servers with one slot left.
-	ecNodes, totalFreeEcSlots = collectEcVolumeServersByDc(resp.TopologyInfo, selectedDataCenter)
+	ecNodes, totalFreeEcSlots = collectEcVolumeServersByDc(topologyInfo, selectedDataCenter)
 
 	sortEcNodesByFreeslotsDecending(ecNodes)
 
diff --git a/weed/shell/command_ec_decode.go b/weed/shell/command_ec_decode.go
index 3e1499d41..dafdb041a 100644
--- a/weed/shell/command_ec_decode.go
+++ b/weed/shell/command_ec_decode.go
@@ -51,7 +51,7 @@ func (c *commandEcDecode) Do(args []string, commandEnv *CommandEnv, writer io.Wr
 	vid := needle.VolumeId(*volumeId)
 
 	// collect topology information
-	topologyInfo, err := collectTopologyInfo(commandEnv)
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
@@ -208,7 +208,7 @@ func collectEcShards(commandEnv *CommandEnv, nodeToEcIndexBits map[string]erasur
 
 }
 
-func collectTopologyInfo(commandEnv *CommandEnv) (topoInfo *master_pb.TopologyInfo, err error) {
+func collectTopologyInfo(commandEnv *CommandEnv) (topoInfo *master_pb.TopologyInfo, volumeSizeLimitMb uint64, err error) {
 
 	var resp *master_pb.VolumeListResponse
 	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
@@ -219,7 +219,7 @@ func collectTopologyInfo(commandEnv *CommandEnv) (topoInfo *master_pb.TopologyIn
 		return
 	}
 
-	return resp.TopologyInfo, nil
+	return resp.TopologyInfo, resp.VolumeSizeLimitMb, nil
 
 }
 
diff --git a/weed/shell/command_ec_encode.go b/weed/shell/command_ec_encode.go
index e937f4490..edacf22c6 100644
--- a/weed/shell/command_ec_encode.go
+++ b/weed/shell/command_ec_encode.go
@@ -265,11 +265,8 @@ func balancedEcDistribution(servers []*EcNode) (allocated [][]uint32) {
 
 func collectVolumeIdsForEcEncode(commandEnv *CommandEnv, selectedCollection string, fullPercentage float64, quietPeriod time.Duration) (vids []needle.VolumeId, err error) {
 
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, volumeSizeLimitMb, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return
 	}
@@ -280,11 +277,11 @@ func collectVolumeIdsForEcEncode(commandEnv *CommandEnv, selectedCollection stri
 	fmt.Printf("ec encode volumes quiet for: %d seconds\n", quietSeconds)
 
 	vidMap := make(map[uint32]bool)
-	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
+	eachDataNode(topologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		for _, diskInfo := range dn.DiskInfos {
 			for _, v := range diskInfo.VolumeInfos {
 				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds {
-					if float64(v.Size) > fullPercentage/100*float64(resp.VolumeSizeLimitMb)*1024*1024 {
+					if float64(v.Size) > fullPercentage/100*float64(volumeSizeLimitMb)*1024*1024 {
 						vidMap[v.Id] = true
 					}
 				}
diff --git a/weed/shell/command_volume_balance.go b/weed/shell/command_volume_balance.go
index a1e3c1ab6..e0c41f310 100644
--- a/weed/shell/command_volume_balance.go
+++ b/weed/shell/command_volume_balance.go
@@ -1,7 +1,6 @@
 package shell
 
 import (
-	"context"
 	"flag"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/storage/super_block"
@@ -75,18 +74,15 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 		return nil
 	}
 
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, volumeSizeLimitMb, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
 
-	volumeServers := collectVolumeServersByDc(resp.TopologyInfo, *dc)
-	volumeReplicas, _ := collectVolumeReplicaLocations(resp)
-	diskTypes := collectVolumeDiskTypes(resp.TopologyInfo)
+	volumeServers := collectVolumeServersByDc(topologyInfo, *dc)
+	volumeReplicas, _ := collectVolumeReplicaLocations(topologyInfo)
+	diskTypes := collectVolumeDiskTypes(topologyInfo)
 
 	if *collection == "EACH_COLLECTION" {
 		collections, err := ListCollectionNames(commandEnv, true, false)
@@ -94,16 +90,16 @@ func (c *commandVolumeBalance) Do(args []string, commandEnv *CommandEnv, writer
 			return err
 		}
 		for _, c := range collections {
-			if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, c, *applyBalancing); err != nil {
+			if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, volumeSizeLimitMb*1024*1024, c, *applyBalancing); err != nil {
 				return err
 			}
 		}
 	} else if *collection == "ALL_COLLECTIONS" {
-		if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, "ALL_COLLECTIONS", *applyBalancing); err != nil {
+		if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, volumeSizeLimitMb*1024*1024, "ALL_COLLECTIONS", *applyBalancing); err != nil {
 			return err
 		}
 	} else {
-		if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, resp.VolumeSizeLimitMb*1024*1024, *collection, *applyBalancing); err != nil {
+		if err = balanceVolumeServers(commandEnv, diskTypes, volumeReplicas, volumeServers, volumeSizeLimitMb*1024*1024, *collection, *applyBalancing); err != nil {
 			return err
 		}
 	}
diff --git a/weed/shell/command_volume_configure_replication.go b/weed/shell/command_volume_configure_replication.go
index ecbe402e8..e3f034873 100644
--- a/weed/shell/command_volume_configure_replication.go
+++ b/weed/shell/command_volume_configure_replication.go
@@ -56,11 +56,8 @@ func (c *commandVolumeConfigureReplication) Do(args []string, commandEnv *Comman
 	}
 	replicaPlacementInt32 := uint32(replicaPlacement.Byte())
 
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
@@ -69,7 +66,7 @@ func (c *commandVolumeConfigureReplication) Do(args []string, commandEnv *Comman
 
 	// find all data nodes with volumes that needs replication change
 	var allLocations []location
-	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
+	eachDataNode(topologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		loc := newLocation(dc, string(rack), dn)
 		for _, diskInfo := range dn.DiskInfos {
 			for _, v := range diskInfo.VolumeInfos {
diff --git a/weed/shell/command_volume_fix_replication.go b/weed/shell/command_volume_fix_replication.go
index 7b2eb6769..bf20d3574 100644
--- a/weed/shell/command_volume_fix_replication.go
+++ b/weed/shell/command_volume_fix_replication.go
@@ -64,18 +64,15 @@ func (c *commandVolumeFixReplication) Do(args []string, commandEnv *CommandEnv,
 
 	takeAction := !*skipChange
 
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
 
 	// find all volumes that needs replication
 	// collect all data nodes
-	volumeReplicas, allLocations := collectVolumeReplicaLocations(resp)
+	volumeReplicas, allLocations := collectVolumeReplicaLocations(topologyInfo)
 
 	if len(allLocations) == 0 {
 		return fmt.Errorf("no data nodes at all")
@@ -107,10 +104,10 @@ func (c *commandVolumeFixReplication) Do(args []string, commandEnv *CommandEnv,
 
 }
 
-func collectVolumeReplicaLocations(resp *master_pb.VolumeListResponse) (map[uint32][]*VolumeReplica, []location) {
+func collectVolumeReplicaLocations(topologyInfo *master_pb.TopologyInfo) (map[uint32][]*VolumeReplica, []location) {
 	volumeReplicas := make(map[uint32][]*VolumeReplica)
 	var allLocations []location
-	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
+	eachDataNode(topologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		loc := newLocation(dc, string(rack), dn)
 		for _, diskInfo := range dn.DiskInfos {
 			for _, v := range diskInfo.VolumeInfos {
diff --git a/weed/shell/command_volume_fsck.go b/weed/shell/command_volume_fsck.go
index f9dcf3b5f..1fbc9ad35 100644
--- a/weed/shell/command_volume_fsck.go
+++ b/weed/shell/command_volume_fsck.go
@@ -73,7 +73,7 @@ func (c *commandVolumeFsck) Do(args []string, commandEnv *CommandEnv, writer io.
 	defer os.RemoveAll(tempFolder)
 
 	// collect all volume id locations
-	volumeIdToVInfo, err := c.collectVolumeIds(*verbose, writer)
+	volumeIdToVInfo, err := c.collectVolumeIds(commandEnv, *verbose, writer)
 	if err != nil {
 		return fmt.Errorf("failed to collect all volume locations: %v", err)
 	}
@@ -268,23 +268,20 @@ type VInfo struct {
 	isEcVolume bool
 }
 
-func (c *commandVolumeFsck) collectVolumeIds(verbose bool, writer io.Writer) (volumeIdToServer map[uint32]VInfo, err error) {
+func (c *commandVolumeFsck) collectVolumeIds(commandEnv *CommandEnv, verbose bool, writer io.Writer) (volumeIdToServer map[uint32]VInfo, err error) {
 
 	if verbose {
 		fmt.Fprintf(writer, "collecting volume id and locations from master ...\n")
 	}
 
 	volumeIdToServer = make(map[uint32]VInfo)
-	var resp *master_pb.VolumeListResponse
-	err = c.env.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return
 	}
 
-	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, t *master_pb.DataNodeInfo) {
+	eachDataNode(topologyInfo, func(dc string, rack RackId, t *master_pb.DataNodeInfo) {
 		for _, diskInfo := range t.DiskInfos {
 			for _, vi := range diskInfo.VolumeInfos {
 				volumeIdToServer[vi.Id] = VInfo{
diff --git a/weed/shell/command_volume_list.go b/weed/shell/command_volume_list.go
index dc8783cd1..9856de10b 100644
--- a/weed/shell/command_volume_list.go
+++ b/weed/shell/command_volume_list.go
@@ -2,7 +2,6 @@ package shell
 
 import (
 	"bytes"
-	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
@@ -32,16 +31,13 @@ func (c *commandVolumeList) Help() string {
 
 func (c *commandVolumeList) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
 
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, volumeSizeLimitMb, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
 
-	writeTopologyInfo(writer, resp.TopologyInfo, resp.VolumeSizeLimitMb)
+	writeTopologyInfo(writer, topologyInfo, volumeSizeLimitMb)
 	return nil
 }
 
diff --git a/weed/shell/command_volume_server_evacuate.go b/weed/shell/command_volume_server_evacuate.go
index 5216de66b..80c5b1d6b 100644
--- a/weed/shell/command_volume_server_evacuate.go
+++ b/weed/shell/command_volume_server_evacuate.go
@@ -1,7 +1,6 @@
 package shell
 
 import (
-	"context"
 	"flag"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
@@ -71,36 +70,33 @@ func volumeServerEvacuate(commandEnv *CommandEnv, volumeServer string, skipNonMo
 	// 3. move to any other volume server as long as it satisfy the replication requirements
 
 	// list all the volumes
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
+	// collect topology information
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
 
-	if err := evacuateNormalVolumes(commandEnv, resp, volumeServer, skipNonMoveable, applyChange, writer); err != nil {
+	if err := evacuateNormalVolumes(commandEnv, topologyInfo, volumeServer, skipNonMoveable, applyChange, writer); err != nil {
 		return err
 	}
 
-	if err := evacuateEcVolumes(commandEnv, resp, volumeServer, skipNonMoveable, applyChange, writer); err != nil {
+	if err := evacuateEcVolumes(commandEnv, topologyInfo, volumeServer, skipNonMoveable, applyChange, writer); err != nil {
 		return err
 	}
 
 	return nil
 }
 
-func evacuateNormalVolumes(commandEnv *CommandEnv, resp *master_pb.VolumeListResponse, volumeServer string, skipNonMoveable, applyChange bool, writer io.Writer) error {
+func evacuateNormalVolumes(commandEnv *CommandEnv, topologyInfo *master_pb.TopologyInfo, volumeServer string, skipNonMoveable, applyChange bool, writer io.Writer) error {
 	// find this volume server
-	volumeServers := collectVolumeServersByDc(resp.TopologyInfo, "")
+	volumeServers := collectVolumeServersByDc(topologyInfo, "")
 	thisNode, otherNodes := nodesOtherThan(volumeServers, volumeServer)
 	if thisNode == nil {
 		return fmt.Errorf("%s is not found in this cluster", volumeServer)
 	}
 
 	// move away normal volumes
-	volumeReplicas, _ := collectVolumeReplicaLocations(resp)
+	volumeReplicas, _ := collectVolumeReplicaLocations(topologyInfo)
 	for _, diskInfo := range thisNode.info.DiskInfos {
 		for _, vol := range diskInfo.VolumeInfos {
 			hasMoved, err := moveAwayOneNormalVolume(commandEnv, volumeReplicas, vol, thisNode, otherNodes, applyChange)
@@ -120,9 +116,9 @@ func evacuateNormalVolumes(commandEnv *CommandEnv, resp *master_pb.VolumeListRes
 	return nil
 }
 
-func evacuateEcVolumes(commandEnv *CommandEnv, resp *master_pb.VolumeListResponse, volumeServer string, skipNonMoveable, applyChange bool, writer io.Writer) error {
+func evacuateEcVolumes(commandEnv *CommandEnv, topologyInfo *master_pb.TopologyInfo, volumeServer string, skipNonMoveable, applyChange bool, writer io.Writer) error {
 	// find this ec volume server
-	ecNodes, _ := collectEcVolumeServersByDc(resp.TopologyInfo, "")
+	ecNodes, _ := collectEcVolumeServersByDc(topologyInfo, "")
 	thisNode, otherNodes := ecNodesOtherThan(ecNodes, volumeServer)
 	if thisNode == nil {
 		return fmt.Errorf("%s is not found in this cluster\n", volumeServer)
diff --git a/weed/shell/command_volume_tier_download.go b/weed/shell/command_volume_tier_download.go
index 8aeb34d5c..33166ce65 100644
--- a/weed/shell/command_volume_tier_download.go
+++ b/weed/shell/command_volume_tier_download.go
@@ -56,7 +56,7 @@ func (c *commandVolumeTierDownload) Do(args []string, commandEnv *CommandEnv, wr
 	vid := needle.VolumeId(*volumeId)
 
 	// collect topology information
-	topologyInfo, err := collectTopologyInfo(commandEnv)
+	topologyInfo, _, err := collectTopologyInfo(commandEnv)
 	if err != nil {
 		return err
 	}
diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
index 27c6815d4..42c710db3 100644
--- a/weed/shell/command_volume_tier_move.go
+++ b/weed/shell/command_volume_tier_move.go
@@ -1,7 +1,6 @@
 package shell
 
 import (
-	"context"
 	"flag"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
@@ -26,8 +25,10 @@ func (c *commandVolumeTierMove) Name() string {
 func (c *commandVolumeTierMove) Help() string {
 	return `<WIP> change a volume from one disk type to another
 
-	volume.tier.move -source=hdd -target=ssd [-collection=""] [-fullPercent=95] [-quietFor=1h]
-	volume.tier.move -target=hdd [-collection=""] -volumeId=<volume_id>
+	volume.tier.move -fromDiskType=hdd -toDiskType=ssd [-collection=""] [-fullPercent=95] [-quietFor=1h]
+
+	Even if the volume is replicated, only one replica will be changed and the rest replicas will be dropped.
+	So "volume.fix.replication" and "volume.balance" should be followed.
 
 `
 }
@@ -39,7 +40,6 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 	}
 
 	tierCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
-	volumeId := tierCommand.Int("volumeId", 0, "the volume id")
 	collection := tierCommand.String("collection", "", "the collection name")
 	fullPercentage := tierCommand.Float64("fullPercent", 95, "the volume reaches the percentage of max volume size")
 	quietPeriod := tierCommand.Duration("quietFor", 24*time.Hour, "select volumes without no writes for this period")
@@ -49,20 +49,21 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 		return nil
 	}
 
-	if *source == *target {
-		return fmt.Errorf("source tier %s is the same as target tier %s", *source, *target)
+	fromDiskType := types.ToDiskType(*source)
+	toDiskType := types.ToDiskType(*target)
+
+	if fromDiskType == toDiskType {
+		return fmt.Errorf("source tier %s is the same as target tier %s", fromDiskType, toDiskType)
 	}
 
-	vid := needle.VolumeId(*volumeId)
-
-	// volumeId is provided
-	if vid != 0 {
-		// return doVolumeTierMove(commandEnv, writer, *collection, vid, *dest, *keepLocalDatFile)
+	// collect topology information
+	topologyInfo, volumeSizeLimitMb, err := collectTopologyInfo(commandEnv)
+	if err != nil {
+		return err
 	}
 
 	// apply to all volumes in the collection
-	// reusing collectVolumeIdsForEcEncode for now
-	volumeIds, err := collectVolumeIdsForTierChange(commandEnv, *source, *collection, *fullPercentage, *quietPeriod)
+	volumeIds, err := collectVolumeIdsForTierChange(commandEnv, topologyInfo, volumeSizeLimitMb, fromDiskType, *collection, *fullPercentage, *quietPeriod)
 	if err != nil {
 		return err
 	}
@@ -71,16 +72,7 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 	return nil
 }
 
-func collectVolumeIdsForTierChange(commandEnv *CommandEnv, sourceTier string, selectedCollection string, fullPercentage float64, quietPeriod time.Duration) (vids []needle.VolumeId, err error) {
-
-	var resp *master_pb.VolumeListResponse
-	err = commandEnv.MasterClient.WithClient(func(client master_pb.SeaweedClient) error {
-		resp, err = client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
-		return err
-	})
-	if err != nil {
-		return
-	}
+func collectVolumeIdsForTierChange(commandEnv *CommandEnv, topologyInfo *master_pb.TopologyInfo, volumeSizeLimitMb uint64, sourceTier types.DiskType, selectedCollection string, fullPercentage float64, quietPeriod time.Duration) (vids []needle.VolumeId, err error) {
 
 	quietSeconds := int64(quietPeriod / time.Second)
 	nowUnixSeconds := time.Now().Unix()
@@ -88,11 +80,11 @@ func collectVolumeIdsForTierChange(commandEnv *CommandEnv, sourceTier string, se
 	fmt.Printf("collect %s volumes quiet for: %d seconds\n", sourceTier, quietSeconds)
 
 	vidMap := make(map[uint32]bool)
-	eachDataNode(resp.TopologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
+	eachDataNode(topologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
 		for _, diskInfo := range dn.DiskInfos {
 			for _, v := range diskInfo.VolumeInfos {
-				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds && types.ToDiskType(v.DiskType) == types.ToDiskType(sourceTier) {
-					if float64(v.Size) > fullPercentage/100*float64(resp.VolumeSizeLimitMb)*1024*1024 {
+				if v.Collection == selectedCollection && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds && types.ToDiskType(v.DiskType) == sourceTier {
+					if float64(v.Size) > fullPercentage/100*float64(volumeSizeLimitMb)*1024*1024 {
 						vidMap[v.Id] = true
 					}
 				}

From 6a4546d2c088b5d71f8b2200b758a82f1aad08c6 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 01:30:07 -0800
Subject: [PATCH 133/140] shell: add volume.tier.move

---
 weed/shell/command_volume_fix_replication.go |  8 +--
 weed/shell/command_volume_tier_move.go       | 59 +++++++++++++++++++-
 2 files changed, 61 insertions(+), 6 deletions(-)

diff --git a/weed/shell/command_volume_fix_replication.go b/weed/shell/command_volume_fix_replication.go
index bf20d3574..538351fd0 100644
--- a/weed/shell/command_volume_fix_replication.go
+++ b/weed/shell/command_volume_fix_replication.go
@@ -162,10 +162,10 @@ func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *Comm
 		replicaPlacement, _ := super_block.NewReplicaPlacementFromByte(byte(replica.info.ReplicaPlacement))
 		foundNewLocation := false
 		hasSkippedCollection := false
-		keepDataNodesSorted(allLocations, replica.info.DiskType)
+		keepDataNodesSorted(allLocations, types.ToDiskType(replica.info.DiskType))
+		fn := capacityByFreeVolumeCount(types.ToDiskType(replica.info.DiskType))
 		for _, dst := range allLocations {
 			// check whether data nodes satisfy the constraints
-			fn := capacityByFreeVolumeCount(types.ToDiskType(replica.info.DiskType))
 			if fn(dst.dataNode) > 0 && satisfyReplicaPlacement(replicaPlacement, replicas, dst) {
 				// check collection name pattern
 				if *c.collectionPattern != "" {
@@ -216,8 +216,8 @@ func (c *commandVolumeFixReplication) fixUnderReplicatedVolumes(commandEnv *Comm
 	return nil
 }
 
-func keepDataNodesSorted(dataNodes []location, diskType string) {
-	fn := capacityByFreeVolumeCount(types.ToDiskType(diskType))
+func keepDataNodesSorted(dataNodes []location, diskType types.DiskType) {
+	fn := capacityByFreeVolumeCount(diskType)
 	sort.Slice(dataNodes, func(i, j int) bool {
 		return fn(dataNodes[i].dataNode) > fn(dataNodes[j].dataNode)
 	})
diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
index 42c710db3..18385667d 100644
--- a/weed/shell/command_volume_tier_move.go
+++ b/weed/shell/command_volume_tier_move.go
@@ -23,7 +23,7 @@ func (c *commandVolumeTierMove) Name() string {
 }
 
 func (c *commandVolumeTierMove) Help() string {
-	return `<WIP> change a volume from one disk type to another
+	return `change a volume from one disk type to another
 
 	volume.tier.move -fromDiskType=hdd -toDiskType=ssd [-collection=""] [-fullPercent=95] [-quietFor=1h]
 
@@ -45,6 +45,7 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 	quietPeriod := tierCommand.Duration("quietFor", 24*time.Hour, "select volumes without no writes for this period")
 	source := tierCommand.String("fromDiskType", "", "the source disk type")
 	target := tierCommand.String("toDiskType", "", "the target disk type")
+	applyChange := tierCommand.Bool("force", false, "actually apply the changes")
 	if err = tierCommand.Parse(args); err != nil {
 		return nil
 	}
@@ -62,13 +63,67 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 		return err
 	}
 
-	// apply to all volumes in the collection
+	// collect all volumes that should change
 	volumeIds, err := collectVolumeIdsForTierChange(commandEnv, topologyInfo, volumeSizeLimitMb, fromDiskType, *collection, *fullPercentage, *quietPeriod)
 	if err != nil {
 		return err
 	}
 	fmt.Printf("tier move volumes: %v\n", volumeIds)
 
+	_, allLocations := collectVolumeReplicaLocations(topologyInfo)
+	for _, vid := range volumeIds {
+		if err = doVolumeTierMove(commandEnv, writer, *collection, vid, toDiskType, allLocations, *applyChange); err != nil {
+			fmt.Printf("tier move volume %d: %v\n", vid, err)
+		}
+	}
+
+	return nil
+}
+
+func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection string, vid needle.VolumeId, toDiskType types.DiskType, allLocations []location, applyChanges bool) (err error) {
+	// find volume location
+	locations, found := commandEnv.MasterClient.GetLocations(uint32(vid))
+	if !found {
+		return fmt.Errorf("volume %d not found", vid)
+	}
+
+	// find one server with the most empty volume slots with target disk type
+	hasFoundTarget := false
+	keepDataNodesSorted(allLocations, toDiskType)
+	fn := capacityByFreeVolumeCount(toDiskType)
+	for _, dst := range allLocations {
+		if fn(dst.dataNode) > 0 {
+			// ask the volume server to replicate the volume
+			sourceVolumeServer := ""
+			for _, loc := range locations {
+				if loc.Url != dst.dataNode.Id {
+					sourceVolumeServer = loc.Url
+				}
+			}
+			if sourceVolumeServer == "" {
+				continue
+			}
+			fmt.Fprintf(writer, "moving volume %d %s from %s to dataNode %s with disk type ...\n", vid, sourceVolumeServer, dst.dataNode.Id, toDiskType.String())
+			hasFoundTarget = true
+
+			if !applyChanges {
+				break
+			}
+
+			// mark all replicas as read only
+			err = markVolumeReadonly(commandEnv.option.GrpcDialOption, vid, locations)
+			if err != nil {
+				return fmt.Errorf("mark volume %d as readonly on %s: %v", vid, locations[0].Url, err)
+			}
+			return LiveMoveVolume(commandEnv.option.GrpcDialOption, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.String())
+
+		}
+	}
+
+	if !hasFoundTarget {
+		fmt.Fprintf(writer, "can not find disk type %s for volume %d\n", toDiskType.String(), vid)
+	}
+
 	return nil
 }
 

From 5da63e045ec8aac1f86b31c398a4319ddb5e227a Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 01:44:18 -0800
Subject: [PATCH 134/140] avoid moving to another server with the same volume
 id

---
 weed/shell/command_volume_tier_move.go | 28 +++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
index 18385667d..fb52c5d96 100644
--- a/weed/shell/command_volume_tier_move.go
+++ b/weed/shell/command_volume_tier_move.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 	"github.com/chrislusf/seaweedfs/weed/storage/types"
+	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"io"
 	"time"
 
@@ -80,6 +81,15 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 	return nil
 }
 
+func isOneOf(server string, locations []wdclient.Location) bool {
+	for _, loc := range locations {
+		if server == loc.Url {
+			return true
+		}
+	}
+	return false
+}
+
 func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection string, vid needle.VolumeId, toDiskType types.DiskType, allLocations []location, applyChanges bool) (err error) {
 	// find volume location
 	locations, found := commandEnv.MasterClient.GetLocations(uint32(vid))
@@ -94,6 +104,9 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection strin
 	for _, dst := range allLocations {
 		if fn(dst.dataNode) > 0 {
 			// ask the volume server to replicate the volume
+			if isOneOf(dst.dataNode.Id, locations) {
+				continue
+			}
 			sourceVolumeServer := ""
 			for _, loc := range locations {
 				if loc.Url != dst.dataNode.Id {
@@ -111,12 +124,21 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection strin
 			}
 
 			// mark all replicas as read only
-			err = markVolumeReadonly(commandEnv.option.GrpcDialOption, vid, locations)
-			if err != nil {
+			if err = markVolumeReadonly(commandEnv.option.GrpcDialOption, vid, locations); err != nil {
 				return fmt.Errorf("mark volume %d as readonly on %s: %v", vid, locations[0].Url, err)
 			}
-			return LiveMoveVolume(commandEnv.option.GrpcDialOption, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.String())
+			if err = LiveMoveVolume(commandEnv.option.GrpcDialOption, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.String()); err != nil {
+				return fmt.Errorf("move volume %d %s => %s : %v", vid, locations[0].Url, dst.dataNode.Id, err)
+			}
 
+			// remove the remaining replicas
+			for _, loc := range locations {
+				if loc.Url != sourceVolumeServer {
+					if err = deleteVolume(commandEnv.option.GrpcDialOption, vid, loc.Url); err != nil {
+						fmt.Fprintf(writer, "failed to delete volume %d on %s\n", vid, loc.Url)
+					}
+				}
+			}
 		}
 	}
 

From 30b30b8fe0bdfef08c27268970b4df89f7f0abae Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 01:59:03 -0800
Subject: [PATCH 135/140] volume.tier.move: passing non-empty disk type

---
 weed/server/volume_grpc_copy.go        | 2 +-
 weed/shell/command_volume_tier_move.go | 6 +++---
 weed/storage/types/volume_disk_type.go | 7 +++++++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/weed/server/volume_grpc_copy.go b/weed/server/volume_grpc_copy.go
index 3b6524df8..cf9f9f777 100644
--- a/weed/server/volume_grpc_copy.go
+++ b/weed/server/volume_grpc_copy.go
@@ -61,7 +61,7 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
 		}
 		location := vs.store.FindFreeLocation(types.ToDiskType(diskType))
 		if location == nil {
-			return fmt.Errorf("no space left")
+			return fmt.Errorf("no space left for disk type %s", types.ToDiskType(diskType).ReadableString())
 		}
 
 		dataBaseFileName = storage.VolumeFileName(location.Directory, volFileInfoResp.Collection, int(req.VolumeId))
diff --git a/weed/shell/command_volume_tier_move.go b/weed/shell/command_volume_tier_move.go
index fb52c5d96..a15efd6b3 100644
--- a/weed/shell/command_volume_tier_move.go
+++ b/weed/shell/command_volume_tier_move.go
@@ -116,7 +116,7 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection strin
 			if sourceVolumeServer == "" {
 				continue
 			}
-			fmt.Fprintf(writer, "moving volume %d %s from %s to dataNode %s with disk type ...\n", vid, sourceVolumeServer, dst.dataNode.Id, toDiskType.String())
+			fmt.Fprintf(writer, "moving volume %d from %s to %s with disk type %s ...\n", vid, sourceVolumeServer, dst.dataNode.Id, toDiskType.ReadableString())
 			hasFoundTarget = true
 
 			if !applyChanges {
@@ -127,7 +127,7 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection strin
 			if err = markVolumeReadonly(commandEnv.option.GrpcDialOption, vid, locations); err != nil {
 				return fmt.Errorf("mark volume %d as readonly on %s: %v", vid, locations[0].Url, err)
 			}
-			if err = LiveMoveVolume(commandEnv.option.GrpcDialOption, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.String()); err != nil {
+			if err = LiveMoveVolume(commandEnv.option.GrpcDialOption, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.ReadableString()); err != nil {
 				return fmt.Errorf("move volume %d %s => %s : %v", vid, locations[0].Url, dst.dataNode.Id, err)
 			}
 
@@ -143,7 +143,7 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, collection strin
 	}
 
 	if !hasFoundTarget {
-		fmt.Fprintf(writer, "can not find disk type %s for volume %d\n", toDiskType.String(), vid)
+		fmt.Fprintf(writer, "can not find disk type %s for volume %d\n", toDiskType.ReadableString(), vid)
 	}
 
 	return nil
diff --git a/weed/storage/types/volume_disk_type.go b/weed/storage/types/volume_disk_type.go
index 25056ee10..c9b87d802 100644
--- a/weed/storage/types/volume_disk_type.go
+++ b/weed/storage/types/volume_disk_type.go
@@ -31,3 +31,10 @@ func (diskType DiskType) String() string {
 	}
 	return string(diskType)
 }
+
+func (diskType DiskType) ReadableString() string {
+	if diskType == "" {
+		return "hdd"
+	}
+	return string(diskType)
+}

From 62191b08eafe896f0f403bbf759f1cb07a59856f Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 02:03:12 -0800
Subject: [PATCH 136/140] disk type support custom tags

---
 weed/command/benchmark.go          | 2 +-
 weed/command/filer.go              | 2 +-
 weed/command/filer_copy.go         | 2 +-
 weed/command/filer_sync.go         | 4 ++--
 weed/command/mount.go              | 2 +-
 weed/command/server.go             | 4 ++--
 weed/command/upload.go             | 2 +-
 weed/command/volume.go             | 2 +-
 weed/command/webdav.go             | 2 +-
 weed/shell/command_fs_configure.go | 2 +-
 weed/shell/command_volume_move.go  | 6 +++---
 11 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/weed/command/benchmark.go b/weed/command/benchmark.go
index e1b6d8d6c..c1bc80c42 100644
--- a/weed/command/benchmark.go
+++ b/weed/command/benchmark.go
@@ -63,7 +63,7 @@ func init() {
 	b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
 	b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
 	b.replication = cmdBenchmark.Flag.String("replication", "000", "replication type")
-	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	b.diskType = cmdBenchmark.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
 	b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	b.fsync = cmdBenchmark.Flag.Bool("fsync", false, "flush data to disk after write")
diff --git a/weed/command/filer.go b/weed/command/filer.go
index 6660bd694..534bd9e04 100644
--- a/weed/command/filer.go
+++ b/weed/command/filer.go
@@ -84,7 +84,7 @@ func init() {
 	filerWebDavOptions.port = cmdFiler.Flag.Int("webdav.port", 7333, "webdav server http listen port")
 	filerWebDavOptions.collection = cmdFiler.Flag.String("webdav.collection", "", "collection to create the files")
 	filerWebDavOptions.replication = cmdFiler.Flag.String("webdav.replication", "", "replication to create the files")
-	filerWebDavOptions.disk = cmdFiler.Flag.String("webdav.disk", "", "[hdd|ssd] hard drive or solid state drive")
+	filerWebDavOptions.disk = cmdFiler.Flag.String("webdav.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	filerWebDavOptions.tlsPrivateKey = cmdFiler.Flag.String("webdav.key.file", "", "path to the TLS private key file")
 	filerWebDavOptions.tlsCertificate = cmdFiler.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	filerWebDavOptions.cacheDir = cmdFiler.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index bf64e72b3..42f5ec4c3 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -55,7 +55,7 @@ func init() {
 	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
 	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
 	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index 725f7d485..f8beb6fda 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -58,8 +58,8 @@ func init() {
 	syncOptions.bCollection = cmdFilerSynchronize.Flag.String("b.collection", "", "collection on filer B")
 	syncOptions.aTtlSec = cmdFilerSynchronize.Flag.Int("a.ttlSec", 0, "ttl in seconds on filer A")
 	syncOptions.bTtlSec = cmdFilerSynchronize.Flag.Int("b.ttlSec", 0, "ttl in seconds on filer B")
-	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd] hard drive or solid state drive on filer A")
-	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd] hard drive or solid state drive on filer B")
+	syncOptions.aDiskType = cmdFilerSynchronize.Flag.String("a.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer A")
+	syncOptions.bDiskType = cmdFilerSynchronize.Flag.String("b.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag on filer B")
 	syncOptions.aProxyByFiler = cmdFilerSynchronize.Flag.Bool("a.filerProxy", false, "read and write file chunks by filer A instead of volume servers")
 	syncOptions.bProxyByFiler = cmdFilerSynchronize.Flag.Bool("b.filerProxy", false, "read and write file chunks by filer B instead of volume servers")
 	syncOptions.aDebug = cmdFilerSynchronize.Flag.Bool("a.debug", false, "debug mode to print out filer A received files")
diff --git a/weed/command/mount.go b/weed/command/mount.go
index aa6d91740..ea439af7c 100644
--- a/weed/command/mount.go
+++ b/weed/command/mount.go
@@ -42,7 +42,7 @@ func init() {
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
 	mountOptions.collection = cmdMount.Flag.String("collection", "", "collection to create the files")
 	mountOptions.replication = cmdMount.Flag.String("replication", "", "replication(e.g. 000, 001) to create to files. If empty, let filer decide.")
-	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	mountOptions.diskType = cmdMount.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	mountOptions.ttlSec = cmdMount.Flag.Int("ttl", 0, "file ttl in seconds")
 	mountOptions.chunkSizeLimitMB = cmdMount.Flag.Int("chunkSizeLimitMB", 2, "local write buffer size, also chunk large files")
 	mountOptions.concurrentWriters = cmdMount.Flag.Int("concurrentWriters", 128, "limit concurrent goroutine writers if not 0")
diff --git a/weed/command/server.go b/weed/command/server.go
index d7c41b014..611578953 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -102,7 +102,7 @@ func init() {
 	serverOptions.v.port = cmdServer.Flag.Int("volume.port", 8080, "volume server http listen port")
 	serverOptions.v.publicPort = cmdServer.Flag.Int("volume.port.public", 0, "volume server public port")
 	serverOptions.v.indexType = cmdServer.Flag.String("volume.index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd] hard drive or solid state drive")
+	serverOptions.v.diskType = cmdServer.Flag.String("volume.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	serverOptions.v.fixJpgOrientation = cmdServer.Flag.Bool("volume.images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	serverOptions.v.readRedirect = cmdServer.Flag.Bool("volume.read.redirect", true, "Redirect moved or non-local volumes.")
 	serverOptions.v.compactionMBPerSecond = cmdServer.Flag.Int("volume.compactionMBps", 0, "limit compaction speed in mega bytes per second")
@@ -122,7 +122,7 @@ func init() {
 	webdavOptions.port = cmdServer.Flag.Int("webdav.port", 7333, "webdav server http listen port")
 	webdavOptions.collection = cmdServer.Flag.String("webdav.collection", "", "collection to create the files")
 	webdavOptions.replication = cmdServer.Flag.String("webdav.replication", "", "replication to create the files")
-	webdavOptions.disk = cmdServer.Flag.String("webdav.disk", "", "[hdd|ssd] hard drive or solid state drive")
+	webdavOptions.disk = cmdServer.Flag.String("webdav.disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	webdavOptions.tlsPrivateKey = cmdServer.Flag.String("webdav.key.file", "", "path to the TLS private key file")
 	webdavOptions.tlsCertificate = cmdServer.Flag.String("webdav.cert.file", "", "path to the TLS certificate file")
 	webdavOptions.cacheDir = cmdServer.Flag.String("webdav.cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/command/upload.go b/weed/command/upload.go
index 149d71241..67fde2185 100644
--- a/weed/command/upload.go
+++ b/weed/command/upload.go
@@ -41,7 +41,7 @@ func init() {
 	upload.replication = cmdUpload.Flag.String("replication", "", "replication type")
 	upload.collection = cmdUpload.Flag.String("collection", "", "optional collection name")
 	upload.dataCenter = cmdUpload.Flag.String("dataCenter", "", "optional data center name")
-	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	upload.diskType = cmdUpload.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	upload.ttl = cmdUpload.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
 	upload.maxMB = cmdUpload.Flag.Int("maxMB", 32, "split files larger than the limit")
 	upload.usePublicUrl = cmdUpload.Flag.Bool("usePublicUrl", false, "upload to public url from volume server")
diff --git a/weed/command/volume.go b/weed/command/volume.go
index ff951afdc..659c93d96 100644
--- a/weed/command/volume.go
+++ b/weed/command/volume.go
@@ -78,7 +78,7 @@ func init() {
 	v.dataCenter = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|leveldbMedium|leveldbLarge] mode for memory~performance balance.")
-	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	v.diskType = cmdVolume.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", false, "Adjust jpg orientation when uploading.")
 	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 	v.cpuProfile = cmdVolume.Flag.String("cpuprofile", "", "cpu profile output file")
diff --git a/weed/command/webdav.go b/weed/command/webdav.go
index 3e4532d6e..2bd4a3c61 100644
--- a/weed/command/webdav.go
+++ b/weed/command/webdav.go
@@ -39,7 +39,7 @@ func init() {
 	webDavStandaloneOptions.port = cmdWebDav.Flag.Int("port", 7333, "webdav server http listen port")
 	webDavStandaloneOptions.collection = cmdWebDav.Flag.String("collection", "", "collection to create the files")
 	webDavStandaloneOptions.replication = cmdWebDav.Flag.String("replication", "", "replication to create the files")
-	webDavStandaloneOptions.disk = cmdWebDav.Flag.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	webDavStandaloneOptions.disk = cmdWebDav.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	webDavStandaloneOptions.tlsPrivateKey = cmdWebDav.Flag.String("key.file", "", "path to the TLS private key file")
 	webDavStandaloneOptions.tlsCertificate = cmdWebDav.Flag.String("cert.file", "", "path to the TLS certificate file")
 	webDavStandaloneOptions.cacheDir = cmdWebDav.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks")
diff --git a/weed/shell/command_fs_configure.go b/weed/shell/command_fs_configure.go
index d0db3722a..02cd7ac69 100644
--- a/weed/shell/command_fs_configure.go
+++ b/weed/shell/command_fs_configure.go
@@ -52,7 +52,7 @@ func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io
 	collection := fsConfigureCommand.String("collection", "", "assign writes to this collection")
 	replication := fsConfigureCommand.String("replication", "", "assign writes with this replication")
 	ttl := fsConfigureCommand.String("ttl", "", "assign writes with this ttl")
-	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	diskType := fsConfigureCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
 	volumeGrowthCount := fsConfigureCommand.Int("volumeGrowthCount", 0, "the number of physical volumes to add if no writable volumes")
 	isDelete := fsConfigureCommand.Bool("delete", false, "delete the configuration by locationPrefix")
diff --git a/weed/shell/command_volume_move.go b/weed/shell/command_volume_move.go
index f9462beee..84f33db34 100644
--- a/weed/shell/command_volume_move.go
+++ b/weed/shell/command_volume_move.go
@@ -29,7 +29,7 @@ func (c *commandVolumeMove) Help() string {
 	return `move a live volume from one volume server to another volume server
 
 	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id>
-	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [hdd|ssd]
+	volume.move -source <source volume server host:port> -target <target volume server host:port> -volumeId <volume id> -disk [hdd|ssd|<tag>]
 
 	This command move a live volume from one volume server to another volume server. Here are the steps:
 
@@ -41,7 +41,7 @@ func (c *commandVolumeMove) Help() string {
 		Now the master will mark this volume id as writable.
 	5. This command asks the source volume server to delete the source volume
 
-	The option "-disk [hdd|ssd]" can be used to change the volume disk type.
+	The option "-disk [hdd|ssd|<tag>]" can be used to change the volume disk type.
 
 `
 }
@@ -56,7 +56,7 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *CommandEnv, writer io.
 	volumeIdInt := volMoveCommand.Int("volumeId", 0, "the volume id")
 	sourceNodeStr := volMoveCommand.String("source", "", "the source volume server <host>:<port>")
 	targetNodeStr := volMoveCommand.String("target", "", "the target volume server <host>:<port>")
-	diskTypeStr := volMoveCommand.String("disk", "", "[hdd|ssd] hard drive or solid state drive")
+	diskTypeStr := volMoveCommand.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
 	if err = volMoveCommand.Parse(args); err != nil {
 		return nil
 	}

From 44bdfb2d157684e0862408a3a5146179d62839db Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 12:22:49 -0800
Subject: [PATCH 137/140] filer: avoid encryption and compression at the same
 time

fix https://github.com/chrislusf/seaweedfs/issues/1828
---
 weed/operation/upload_content.go | 33 ++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index 934075ff3..70428bb07 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -130,7 +130,8 @@ func doUploadData(uploadUrl string, filename string, cipher bool, data []byte, i
 	// gzip if possible
 	// this could be double copying
 	clearDataLen = len(data)
-	if shouldGzipNow {
+	clearData := data
+	if shouldGzipNow && !cipher {
 		compressed, compressErr := util.GzipData(data)
 		// fmt.Printf("data is compressed from %d ==> %d\n", len(data), len(compressed))
 		if compressErr == nil {
@@ -139,7 +140,7 @@ func doUploadData(uploadUrl string, filename string, cipher bool, data []byte, i
 		}
 	} else if isInputCompressed {
 		// just to get the clear data length
-		clearData, err := util.DecompressData(data)
+		clearData, err = util.DecompressData(data)
 		if err == nil {
 			clearDataLen = len(clearData)
 		}
@@ -150,7 +151,7 @@ func doUploadData(uploadUrl string, filename string, cipher bool, data []byte, i
 
 		// encrypt
 		cipherKey := util.GenCipherKey()
-		encryptedData, encryptionErr := util.Encrypt(data, cipherKey)
+		encryptedData, encryptionErr := util.Encrypt(clearData, cipherKey)
 		if encryptionErr != nil {
 			err = fmt.Errorf("encrypt input: %v", encryptionErr)
 			return
@@ -161,26 +162,26 @@ func doUploadData(uploadUrl string, filename string, cipher bool, data []byte, i
 			_, err = w.Write(encryptedData)
 			return
 		}, "", false, len(encryptedData), "", nil, jwt)
-		if uploadResult != nil {
-			uploadResult.Name = filename
-			uploadResult.Mime = mtype
-			uploadResult.CipherKey = cipherKey
+		if uploadResult == nil {
+			return
 		}
+		uploadResult.Name = filename
+		uploadResult.Mime = mtype
+		uploadResult.CipherKey = cipherKey
+		uploadResult.Size = uint32(clearDataLen)
 	} else {
 		// upload data
 		uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) {
 			_, err = w.Write(data)
 			return
 		}, filename, contentIsGzipped, len(data), mtype, pairMap, jwt)
-	}
-
-	if uploadResult == nil {
-		return
-	}
-
-	uploadResult.Size = uint32(clearDataLen)
-	if contentIsGzipped {
-		uploadResult.Gzip = 1
+		if uploadResult == nil {
+			return
+		}
+		uploadResult.Size = uint32(clearDataLen)
+		if contentIsGzipped {
+			uploadResult.Gzip = 1
+		}
 	}
 
 	return uploadResult, err

From 2270737344f1d5eec90f67d7d07fb139bbec67bd Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 12:52:37 -0800
Subject: [PATCH 138/140] volume: avoid fixed vacuum timeout for large volumes

1GB for 3 minutes, about 5.7MB/s
---
 weed/topology/topology_vacuum.go | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/weed/topology/topology_vacuum.go b/weed/topology/topology_vacuum.go
index 89eefefc7..9feb55b73 100644
--- a/weed/topology/topology_vacuum.go
+++ b/weed/topology/topology_vacuum.go
@@ -14,7 +14,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
 )
 
-func batchVacuumVolumeCheck(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId,
+func (t *Topology) batchVacuumVolumeCheck(grpcDialOption grpc.DialOption, vid needle.VolumeId,
 	locationlist *VolumeLocationList, garbageThreshold float64) (*VolumeLocationList, bool) {
 	ch := make(chan int, locationlist.Length())
 	errCount := int32(0)
@@ -43,7 +43,7 @@ func batchVacuumVolumeCheck(grpcDialOption grpc.DialOption, vl *VolumeLayout, vi
 	}
 	vacuumLocationList := NewVolumeLocationList()
 
-	waitTimeout := time.NewTimer(30 * time.Minute)
+	waitTimeout := time.NewTimer(time.Minute * time.Duration(t.volumeSizeLimit/1024/1024/1000+1))
 	defer waitTimeout.Stop()
 
 	for range locationlist.list {
@@ -58,7 +58,7 @@ func batchVacuumVolumeCheck(grpcDialOption grpc.DialOption, vl *VolumeLayout, vi
 	}
 	return vacuumLocationList, errCount == 0 && len(vacuumLocationList.list) > 0
 }
-func batchVacuumVolumeCompact(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId,
+func (t *Topology) batchVacuumVolumeCompact(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId,
 	locationlist *VolumeLocationList, preallocate int64) bool {
 	vl.accessLock.Lock()
 	vl.removeFromWritable(vid)
@@ -86,7 +86,7 @@ func batchVacuumVolumeCompact(grpcDialOption grpc.DialOption, vl *VolumeLayout,
 	}
 	isVacuumSuccess := true
 
-	waitTimeout := time.NewTimer(30 * time.Minute)
+	waitTimeout := time.NewTimer(3 * time.Minute * time.Duration(t.volumeSizeLimit/1024/1024/1000+1))
 	defer waitTimeout.Stop()
 
 	for range locationlist.list {
@@ -99,7 +99,7 @@ func batchVacuumVolumeCompact(grpcDialOption grpc.DialOption, vl *VolumeLayout,
 	}
 	return isVacuumSuccess
 }
-func batchVacuumVolumeCommit(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId, locationlist *VolumeLocationList) bool {
+func (t *Topology) batchVacuumVolumeCommit(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId, locationlist *VolumeLocationList) bool {
 	isCommitSuccess := true
 	isReadOnly := false
 	for _, dn := range locationlist.list {
@@ -127,7 +127,7 @@ func batchVacuumVolumeCommit(grpcDialOption grpc.DialOption, vl *VolumeLayout, v
 	}
 	return isCommitSuccess
 }
-func batchVacuumVolumeCleanup(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId, locationlist *VolumeLocationList) {
+func (t *Topology) batchVacuumVolumeCleanup(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId, locationlist *VolumeLocationList) {
 	for _, dn := range locationlist.list {
 		glog.V(0).Infoln("Start cleaning up", vid, "on", dn.Url())
 		err := operation.WithVolumeServerClient(dn.Url(), grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
@@ -161,13 +161,13 @@ func (t *Topology) Vacuum(grpcDialOption grpc.DialOption, garbageThreshold float
 		for _, vl := range c.storageType2VolumeLayout.Items() {
 			if vl != nil {
 				volumeLayout := vl.(*VolumeLayout)
-				vacuumOneVolumeLayout(grpcDialOption, volumeLayout, c, garbageThreshold, preallocate)
+				t.vacuumOneVolumeLayout(grpcDialOption, volumeLayout, c, garbageThreshold, preallocate)
 			}
 		}
 	}
 }
 
-func vacuumOneVolumeLayout(grpcDialOption grpc.DialOption, volumeLayout *VolumeLayout, c *Collection, garbageThreshold float64, preallocate int64) {
+func (t *Topology) vacuumOneVolumeLayout(grpcDialOption grpc.DialOption, volumeLayout *VolumeLayout, c *Collection, garbageThreshold float64, preallocate int64) {
 
 	volumeLayout.accessLock.RLock()
 	tmpMap := make(map[needle.VolumeId]*VolumeLocationList)
@@ -187,12 +187,11 @@ func vacuumOneVolumeLayout(grpcDialOption grpc.DialOption, volumeLayout *VolumeL
 		}
 
 		glog.V(2).Infof("check vacuum on collection:%s volume:%d", c.Name, vid)
-		if vacuumLocationList, needVacuum := batchVacuumVolumeCheck(
-			grpcDialOption, volumeLayout, vid, locationList, garbageThreshold); needVacuum {
-			if batchVacuumVolumeCompact(grpcDialOption, volumeLayout, vid, vacuumLocationList, preallocate) {
-				batchVacuumVolumeCommit(grpcDialOption, volumeLayout, vid, vacuumLocationList)
+		if vacuumLocationList, needVacuum := t.batchVacuumVolumeCheck(grpcDialOption, vid, locationList, garbageThreshold); needVacuum {
+			if t.batchVacuumVolumeCompact(grpcDialOption, volumeLayout, vid, vacuumLocationList, preallocate) {
+				t.batchVacuumVolumeCommit(grpcDialOption, volumeLayout, vid, vacuumLocationList)
 			} else {
-				batchVacuumVolumeCleanup(grpcDialOption, volumeLayout, vid, vacuumLocationList)
+				t.batchVacuumVolumeCleanup(grpcDialOption, volumeLayout, vid, vacuumLocationList)
 			}
 		}
 	}

From 72b0d9d8c4bc79d1571c6c770443dcade846d5cc Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 16:50:56 -0800
Subject: [PATCH 139/140] avoid unnecessary user home checking

---
 weed/util/file_util.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/weed/util/file_util.go b/weed/util/file_util.go
index 70135180d..f83f80265 100644
--- a/weed/util/file_util.go
+++ b/weed/util/file_util.go
@@ -69,6 +69,10 @@ func CheckFile(filename string) (exists, canRead, canWrite bool, modTime time.Ti
 
 func ResolvePath(path string) string {
 
+	if !strings.Contains(path, "~") {
+		return path
+	}
+
 	usr, _ := user.Current()
 	dir := usr.HomeDir
 

From 90cdf9dcace5595b31104df3a3b7e4038a7db341 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 22 Feb 2021 16:57:27 -0800
Subject: [PATCH 140/140] avoid conflict with "weed scaffold -config=xxx"

---
 weed/util/fla9/fla9.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/util/fla9/fla9.go b/weed/util/fla9/fla9.go
index 335b9ff7a..4a5884e9b 100644
--- a/weed/util/fla9/fla9.go
+++ b/weed/util/fla9/fla9.go
@@ -1078,7 +1078,7 @@ func NewFlagSetWithEnvPrefix(name string, prefix string, errorHandling ErrorHand
 // DefaultConfigFlagName defines the flag name of the optional config file
 // path. Used to lookup and parse the config file when a default is set and
 // available on disk.
-var DefaultConfigFlagName = "config"
+var DefaultConfigFlagName = "conf"
 
 // ParseFile parses flags from the file in path.
 // Same format as commandline arguments, newlines and lines beginning with a