seaweedfs/weed/command/mount_std.go

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// +build linux darwin freebsd
package command
import (
"context"
"fmt"
"os"
"os/user"
"path"
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"path/filepath"
"runtime"
"strconv"
"strings"
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"syscall"
"time"
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"github.com/chrislusf/seaweedfs/weed/storage/types"
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"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
"github.com/seaweedfs/fuse"
"github.com/seaweedfs/fuse/fs"
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"github.com/chrislusf/seaweedfs/weed/filesys"
"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/chrislusf/seaweedfs/weed/util/grace"
)
func runMount(cmd *Command, args []string) bool {
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grace.SetupProfiling(*mountCpuProfile, *mountMemProfile)
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if *mountReadRetryTime < time.Second {
*mountReadRetryTime = time.Second
}
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util.RetryWaitTime = *mountReadRetryTime
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umask, umaskErr := strconv.ParseUint(*mountOptions.umaskString, 8, 64)
if umaskErr != nil {
fmt.Printf("can not parse umask %s", *mountOptions.umaskString)
return false
}
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if len(args) > 0 {
return false
}
return RunMount(&mountOptions, os.FileMode(umask))
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}
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func getParentInode(mountDir string) (uint64, error) {
parentDir := filepath.Clean(filepath.Join(mountDir, ".."))
fi, err := os.Stat(parentDir)
if err != nil {
return 0, err
}
stat, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return 0, nil
}
return stat.Ino, nil
}
func RunMount(option *MountOptions, umask os.FileMode) bool {
filers := strings.Split(*option.filer, ",")
// parse filer grpc address
filerGrpcAddresses, err := pb.ParseServersToGrpcAddresses(filers)
if err != nil {
glog.V(0).Infof("ParseFilerGrpcAddress: %v", err)
return true
}
util.LoadConfiguration("security", false)
// try to connect to filer, filerBucketsPath may be useful later
grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
var cipher bool
for i := 0; i < 10; i++ {
err = pb.WithOneOfGrpcFilerClients(filerGrpcAddresses, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
if err != nil {
return fmt.Errorf("get filer grpc address %v configuration: %v", filerGrpcAddresses, err)
}
cipher = resp.Cipher
return nil
})
if err != nil {
glog.V(0).Infof("failed to talk to filer %v: %v", filerGrpcAddresses, err)
glog.V(0).Infof("wait for %d seconds ...", i+1)
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time.Sleep(time.Duration(i+1) * time.Second)
}
}
if err != nil {
glog.Errorf("failed to talk to filer %v: %v", filerGrpcAddresses, err)
return true
}
filerMountRootPath := *option.filerMountRootPath
dir := util.ResolvePath(*option.dir)
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parentInode, err := getParentInode(dir)
if err != nil {
glog.Errorf("failed to retrieve inode for parent directory of %s: %v", dir, err)
return true
}
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fmt.Printf("This is SeaweedFS version %s %s %s\n", util.Version(), runtime.GOOS, runtime.GOARCH)
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if dir == "" {
fmt.Printf("Please specify the mount directory via \"-dir\"")
return false
}
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chunkSizeLimitMB := *mountOptions.chunkSizeLimitMB
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if chunkSizeLimitMB <= 0 {
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fmt.Printf("Please specify a reasonable buffer size.")
return false
}
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fuse.Unmount(dir)
// detect mount folder mode
if *option.dirAutoCreate {
os.MkdirAll(dir, os.FileMode(0777)&^umask)
}
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fileInfo, err := os.Stat(dir)
uid, gid := uint32(0), uint32(0)
mountMode := os.ModeDir | 0777
if err == nil {
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mountMode = os.ModeDir | os.FileMode(0777)&^umask
uid, gid = util.GetFileUidGid(fileInfo)
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fmt.Printf("mount point owner uid=%d gid=%d mode=%s\n", uid, gid, mountMode)
} else {
fmt.Printf("can not stat %s\n", dir)
return false
}
if uid == 0 {
if u, err := user.Current(); err == nil {
if parsedId, pe := strconv.ParseUint(u.Uid, 10, 32); pe == nil {
uid = uint32(parsedId)
}
if parsedId, pe := strconv.ParseUint(u.Gid, 10, 32); pe == nil {
gid = uint32(parsedId)
}
fmt.Printf("current uid=%d gid=%d\n", uid, gid)
}
}
// mapping uid, gid
uidGidMapper, err := meta_cache.NewUidGidMapper(*option.uidMap, *option.gidMap)
if err != nil {
fmt.Printf("failed to parse %s %s: %v\n", *option.uidMap, *option.gidMap, err)
return false
}
// Ensure target mount point availability
if isValid := checkMountPointAvailable(dir); !isValid {
glog.Fatalf("Expected mount to still be active, target mount point: %s, please check!", dir)
return true
}
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mountName := path.Base(dir)
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options := []fuse.MountOption{
fuse.VolumeName(mountName),
fuse.FSName(*option.filer + ":" + filerMountRootPath),
fuse.Subtype("seaweedfs"),
// fuse.NoAppleDouble(), // include .DS_Store, otherwise can not delete non-empty folders
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fuse.NoAppleXattr(),
fuse.ExclCreate(),
fuse.DaemonTimeout("3600"),
fuse.AllowSUID(),
fuse.DefaultPermissions(),
fuse.MaxReadahead(1024 * 128),
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fuse.AsyncRead(),
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fuse.WritebackCache(),
fuse.MaxBackground(128),
fuse.CongestionThreshold(128),
}
options = append(options, osSpecificMountOptions()...)
if *option.allowOthers {
options = append(options, fuse.AllowOther())
}
if *option.nonempty {
options = append(options, fuse.AllowNonEmptyMount())
}
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if *option.readOnly {
options = append(options, fuse.ReadOnly())
}
// find mount point
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mountRoot := filerMountRootPath
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if mountRoot != "/" && strings.HasSuffix(mountRoot, "/") {
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mountRoot = mountRoot[0 : len(mountRoot)-1]
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}
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diskType := types.ToDiskType(*option.diskType)
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seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
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MountDirectory: dir,
FilerAddresses: filers,
FilerGrpcAddresses: filerGrpcAddresses,
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GrpcDialOption: grpcDialOption,
FilerMountRootPath: mountRoot,
Collection: *option.collection,
Replication: *option.replication,
TtlSec: int32(*option.ttlSec),
DiskType: diskType,
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ChunkSizeLimit: int64(chunkSizeLimitMB) * 1024 * 1024,
ConcurrentWriters: *option.concurrentWriters,
CacheDir: *option.cacheDir,
CacheSizeMB: *option.cacheSizeMB,
DataCenter: *option.dataCenter,
MountUid: uid,
MountGid: gid,
MountMode: mountMode,
MountCtime: fileInfo.ModTime(),
MountMtime: time.Now(),
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MountParentInode: parentInode,
Umask: umask,
VolumeServerAccess: *mountOptions.volumeServerAccess,
Cipher: cipher,
UidGidMapper: uidGidMapper,
})
// mount
c, err := fuse.Mount(dir, options...)
if err != nil {
glog.V(0).Infof("mount: %v", err)
return true
}
defer fuse.Unmount(dir)
grace.OnInterrupt(func() {
fuse.Unmount(dir)
c.Close()
})
glog.V(0).Infof("mounted %s%s to %v", *option.filer, mountRoot, dir)
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server := fs.New(c, nil)
seaweedFileSystem.Server = server
seaweedFileSystem.StartBackgroundTasks()
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err = server.Serve(seaweedFileSystem)
// check if the mount process has an error to report
<-c.Ready
if err := c.MountError; err != nil {
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glog.V(0).Infof("mount process: %v", err)
return true
}
return true
}