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load volume info from .vif file, use superblock as a backup

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This commit is contained in:
Chris Lu 2019-12-28 12:28:58 -08:00
parent b7bc08cf52
commit c06f7eb48a
9 changed files with 292 additions and 251 deletions
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79
weed/pb/volume_info.go Normal file
View file

@ -0,0 +1,79 @@
package pb
import (
"bytes"
"fmt"
"io/ioutil"
_ "github.com/chrislusf/seaweedfs/weed/storage/backend/s3_backend"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/golang/protobuf/jsonpb"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
)
// MaybeLoadVolumeInfo load the file data as *volume_server_pb.VolumeInfo, the returned volumeInfo will not be nil
func MaybeLoadVolumeInfo(fileName string) (*volume_server_pb.VolumeInfo, bool) {
volumeInfo := &volume_server_pb.VolumeInfo{}
glog.V(1).Infof("maybeLoadVolumeInfo checks %s", fileName)
if exists, canRead, _, _, _ := util.CheckFile(fileName); !exists || !canRead {
if !exists {
return volumeInfo, false
}
if !canRead {
glog.Warningf("can not read %s", fileName)
}
return volumeInfo, false
}
glog.V(1).Infof("maybeLoadVolumeInfo reads %s", fileName)
tierData, readErr := ioutil.ReadFile(fileName)
if readErr != nil {
glog.Warningf("fail to read %s : %v", fileName, readErr)
return volumeInfo, false
}
glog.V(1).Infof("maybeLoadVolumeInfo Unmarshal volume info %v", fileName)
if err := jsonpb.Unmarshal(bytes.NewReader(tierData), volumeInfo); err != nil {
glog.Warningf("unmarshal error: %v", err)
return volumeInfo, false
}
if len(volumeInfo.GetFiles()) == 0 {
return volumeInfo, false
}
return volumeInfo, true
}
func SaveVolumeInfo(fileName string, volumeInfo *volume_server_pb.VolumeInfo) error {
tierFileName := fileName + ".vif"
if exists, _, canWrite, _, _ := util.CheckFile(tierFileName); exists && !canWrite {
return fmt.Errorf("%s not writable", tierFileName)
}
m := jsonpb.Marshaler{
EmitDefaults: true,
Indent: " ",
}
text, marshalErr := m.MarshalToString(volumeInfo)
if marshalErr != nil {
return fmt.Errorf("marshal to %s: %v", fileName, marshalErr)
}
writeErr := ioutil.WriteFile(tierFileName, []byte(text), 0755)
if writeErr != nil {
return fmt.Errorf("fail to write %s : %v", tierFileName, writeErr)
}
return nil
}

1
weed/pb/volume_server.proto
View file

@ -353,6 +353,7 @@ message RemoteFile {
}
message VolumeInfo {
repeated RemoteFile files = 1;
uint32 version = 2;
}
message VolumeTierMoveDatToRemoteRequest {

338
weed/pb/volume_server_pb/volume_server.pb.go
View file

@ -1516,7 +1516,8 @@ func (m *RemoteFile) GetExtension() string {
}
type VolumeInfo struct {
Files []*RemoteFile `protobuf:"bytes,1,rep,name=files" json:"files,omitempty"`
Files []*RemoteFile `protobuf:"bytes,1,rep,name=files" json:"files,omitempty"`
Version uint32 `protobuf:"varint,2,opt,name=version" json:"version,omitempty"`
}
func (m *VolumeInfo) Reset() { *m = VolumeInfo{} }
@ -1531,6 +1532,13 @@ func (m *VolumeInfo) GetFiles() []*RemoteFile {
return nil
}
func (m *VolumeInfo) GetVersion() uint32 {
if m != nil {
return m.Version
}
return 0
}
type VolumeTierMoveDatToRemoteRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
Collection string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
@ -3313,11 +3321,11 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 2885 bytes of a gzipped FileDescriptorProto
// 2891 bytes of a gzipped FileDescriptorProto
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@ -3334,165 +3342,165 @@ var fileDescriptor0 = []byte{
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0xb7, 0xd0, 0xdc, 0x98, 0x1c, 0xbd, 0xa5, 0x7e, 0xc5, 0x14, 0xfa, 0xd9, 0xb8, 0x01, 0x5f, 0x7e,
0x04, 0x44, 0x9b, 0xb5, 0xa9, 0xa8, 0xf6, 0xed, 0xd3, 0x78, 0xe3, 0x58, 0x34, 0x19, 0xe3, 0xff,
0xa2, 0xa5, 0x3b, 0x7e, 0x95, 0xaf, 0x70, 0xe8, 0xcd, 0x06, 0x8c, 0x4b, 0x0f, 0x89, 0xc6, 0x5b,
0xc7, 0xa4, 0xca, 0x2c, 0xe8, 0x23, 0x98, 0x15, 0xd5, 0x27, 0x3a, 0x7f, 0x74, 0x59, 0x6a, 0x5c,
0xa8, 0x9e, 0x4f, 0x8b, 0x2b, 0xce, 0x6d, 0x77, 0x4e, 0xfc, 0x6a, 0xfb, 0xc6, 0x3f, 0x03, 0x00,
0x00, 0xff, 0xff, 0xa1, 0xba, 0x89, 0x07, 0x81, 0x2b, 0x00, 0x00,
}

1
weed/storage/erasure_coding/ec_volume.go
View file

@ -126,6 +126,7 @@ func (ev *EcVolume) Destroy() {
}
os.Remove(ev.FileName() + ".ecx")
os.Remove(ev.FileName() + ".ecj")
os.Remove(ev.FileName() + ".vif")
}
func (ev *EcVolume) FileName() string {

3
weed/storage/volume.go
View file

@ -70,6 +70,9 @@ func (v *Volume) FileName() (fileName string) {
}
func (v *Volume) Version() needle.Version {
if v.volumeInfo.Version != 0 {
v.SuperBlock.Version = needle.Version(v.volumeInfo.Version)
}
return v.SuperBlock.Version
}

21
weed/storage/volume_loading.go
View file

@ -3,7 +3,6 @@ package storage
import (
"fmt"
"os"
"time"
"github.com/syndtr/goleveldb/leveldb/opt"
@ -12,6 +11,7 @@ import (
"github.com/chrislusf/seaweedfs/weed/storage/backend"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/storage/super_block"
"github.com/chrislusf/seaweedfs/weed/util"
)
func loadVolumeWithoutIndex(dirname string, collection string, id needle.VolumeId, needleMapKind NeedleMapType) (v *Volume, err error) {
@ -34,7 +34,7 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
glog.V(0).Infof("loading volume %d from remote %v", v.Id, v.volumeInfo.Files)
v.LoadRemoteFile()
alreadyHasSuperBlock = true
} else if exists, canRead, canWrite, modifiedTime, fileSize := checkFile(fileName + ".dat"); exists {
} else if exists, canRead, canWrite, modifiedTime, fileSize := util.CheckFile(fileName + ".dat"); exists {
// open dat file
if !canRead {
return fmt.Errorf("cannot read Volume Data file %s.dat", fileName)
@ -144,20 +144,3 @@ func (v *Volume) load(alsoLoadIndex bool, createDatIfMissing bool, needleMapKind
return err
}
func checkFile(filename string) (exists, canRead, canWrite bool, modTime time.Time, fileSize int64) {
exists = true
fi, err := os.Stat(filename)
if os.IsNotExist(err) {
exists = false
return
}
if fi.Mode()&0400 != 0 {
canRead = true
}
if fi.Mode()&0200 != 0 {
canWrite = true
}
modTime = fi.ModTime()
fileSize = fi.Size()
return
}

6
weed/storage/volume_read_write.go
View file

@ -184,8 +184,10 @@ func ScanVolumeFile(dirname string, collection string, id needle.VolumeId,
if v, err = loadVolumeWithoutIndex(dirname, collection, id, needleMapKind); err != nil {
return fmt.Errorf("failed to load volume %d: %v", id, err)
}
if err = volumeFileScanner.VisitSuperBlock(v.SuperBlock); err != nil {
return fmt.Errorf("failed to process volume %d super block: %v", id, err)
if v.volumeInfo.Version == 0 {
if err = volumeFileScanner.VisitSuperBlock(v.SuperBlock); err != nil {
return fmt.Errorf("failed to process volume %d super block: %v", id, err)
}
}
defer v.Close()

75
weed/storage/volume_tier.go
View file

@ -1,66 +1,29 @@
package storage
import (
"bytes"
"fmt"
"io/ioutil"
_ "github.com/chrislusf/seaweedfs/weed/storage/backend/s3_backend"
"github.com/golang/protobuf/jsonpb"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage/backend"
_ "github.com/chrislusf/seaweedfs/weed/storage/backend/s3_backend"
)
func (v *Volume) GetVolumeInfo() *volume_server_pb.VolumeInfo {
return v.volumeInfo
}
func (v *Volume) maybeLoadVolumeInfo() bool {
func (v *Volume) maybeLoadVolumeInfo() {
v.volumeInfo = &volume_server_pb.VolumeInfo{}
var found bool
tierFileName := v.FileName() + ".vif"
v.volumeInfo, found = pb.MaybeLoadVolumeInfo(v.FileName() + ".vif")
if exists, canRead, _, _, _ := checkFile(tierFileName); !exists || !canRead {
if !exists {
return false
}
if !canRead {
glog.Warningf("can not read %s", tierFileName)
}
return false
if found {
glog.V(0).Infof("volume %d is tiered to %s as %s and read only", v.Id,
v.volumeInfo.Files[0].BackendName(), v.volumeInfo.Files[0].Key)
v.hasRemoteFile = true
}
glog.V(0).Infof("maybeLoadVolumeInfo loading volume %d check file", v.Id)
tierData, readErr := ioutil.ReadFile(tierFileName)
if readErr != nil {
glog.Warningf("fail to read %s : %v", tierFileName, readErr)
return false
}
glog.V(0).Infof("maybeLoadVolumeInfo loading volume %d ReadFile", v.Id)
if err := jsonpb.Unmarshal(bytes.NewReader(tierData), v.volumeInfo); err != nil {
glog.Warningf("unmarshal error: %v", err)
return false
}
glog.V(0).Infof("maybeLoadVolumeInfo loading volume %d Unmarshal tierInfo %v", v.Id, v.volumeInfo)
if len(v.volumeInfo.GetFiles()) == 0 {
return false
}
glog.V(0).Infof("volume %d is tiered to %s as %s and read only", v.Id,
v.volumeInfo.Files[0].BackendName(), v.volumeInfo.Files[0].Key)
v.hasRemoteFile = true
return true
}
func (v *Volume) HasRemoteFile() bool {
@ -83,24 +46,6 @@ func (v *Volume) SaveVolumeInfo() error {
tierFileName := v.FileName() + ".vif"
if exists, _, canWrite, _, _ := checkFile(tierFileName); exists && !canWrite {
return fmt.Errorf("%s not writable", tierFileName)
}
return pb.SaveVolumeInfo(tierFileName, v.volumeInfo)
m := jsonpb.Marshaler{
EmitDefaults: true,
Indent: " ",
}
text, marshalErr := m.MarshalToString(v.GetVolumeInfo())
if marshalErr != nil {
return fmt.Errorf("marshal volume %d tier info: %v", v.Id, marshalErr)
}
writeErr := ioutil.WriteFile(tierFileName, []byte(text), 0755)
if writeErr != nil {
return fmt.Errorf("fail to write %s : %v", tierFileName, writeErr)
}
return nil
}

19
weed/util/file_util.go
View file

@ -3,6 +3,7 @@ package util
import (
"errors"
"os"
"time"
"github.com/chrislusf/seaweedfs/weed/glog"
)
@ -40,3 +41,21 @@ func FileExists(filename string) bool {
return true
}
func CheckFile(filename string) (exists, canRead, canWrite bool, modTime time.Time, fileSize int64) {
exists = true
fi, err := os.Stat(filename)
if os.IsNotExist(err) {
exists = false
return
}
if fi.Mode()&0400 != 0 {
canRead = true
}
if fi.Mode()&0200 != 0 {
canWrite = true
}
modTime = fi.ModTime()
fileSize = fi.Size()
return
}