mirror of https://github.com/chrislusf/seaweedfs
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
package command
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import (
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"os"
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"path"
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"strconv"
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"github.com/chrislusf/seaweedfs/weed/util/log"
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"github.com/chrislusf/seaweedfs/weed/storage"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/storage/needle_map"
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"github.com/chrislusf/seaweedfs/weed/storage/super_block"
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"github.com/chrislusf/seaweedfs/weed/storage/types"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func init() {
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cmdFix.Run = runFix // break init cycle
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}
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var cmdFix = &Command{
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UsageLine: "fix -dir=/tmp -volumeId=234",
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Short: "run weed tool fix on index file if corrupted",
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Long: `Fix runs the SeaweedFS fix command to re-create the index .idx file.
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`,
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}
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var (
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fixVolumePath = cmdFix.Flag.String("dir", ".", "data directory to store files")
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fixVolumeCollection = cmdFix.Flag.String("collection", "", "the volume collection name")
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fixVolumeId = cmdFix.Flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
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)
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type VolumeFileScanner4Fix struct {
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version needle.Version
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nm *needle_map.MemDb
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}
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func (scanner *VolumeFileScanner4Fix) VisitSuperBlock(superBlock super_block.SuperBlock) error {
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scanner.version = superBlock.Version
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return nil
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}
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func (scanner *VolumeFileScanner4Fix) ReadNeedleBody() bool {
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return false
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}
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func (scanner *VolumeFileScanner4Fix) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error {
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log.Debugf("key %d offset %d size %d disk_size %d compressed %v", n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsCompressed())
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if n.Size.IsValid() {
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pe := scanner.nm.Set(n.Id, types.ToOffset(offset), n.Size)
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log.Debugf("saved %d with error %v", n.Size, pe)
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} else {
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log.Debugf("skipping deleted file ...")
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return scanner.nm.Delete(n.Id)
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}
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return nil
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}
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func runFix(cmd *Command, args []string) bool {
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if *fixVolumeId == -1 {
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return false
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}
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baseFileName := strconv.Itoa(*fixVolumeId)
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if *fixVolumeCollection != "" {
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baseFileName = *fixVolumeCollection + "_" + baseFileName
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}
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indexFileName := path.Join(util.ResolvePath(*fixVolumePath), baseFileName+".idx")
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nm := needle_map.NewMemDb()
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defer nm.Close()
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vid := needle.VolumeId(*fixVolumeId)
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scanner := &VolumeFileScanner4Fix{
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nm: nm,
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}
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if err := storage.ScanVolumeFile(util.ResolvePath(*fixVolumePath), *fixVolumeCollection, vid, storage.NeedleMapInMemory, scanner); err != nil {
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log.Fatalf("scan .dat File: %v", err)
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os.Remove(indexFileName)
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}
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if err := nm.SaveToIdx(indexFileName); err != nil {
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log.Fatalf("save to .idx File: %v", err)
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os.Remove(indexFileName)
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}
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return true
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}
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