package command import ( "fmt" "io/fs" "os" "path" "strconv" "strings" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/storage" "github.com/chrislusf/seaweedfs/weed/storage/needle" "github.com/chrislusf/seaweedfs/weed/storage/needle_map" "github.com/chrislusf/seaweedfs/weed/storage/super_block" "github.com/chrislusf/seaweedfs/weed/storage/types" "github.com/chrislusf/seaweedfs/weed/util" ) func init() { cmdFix.Run = runFix // break init cycle } var cmdFix = &Command{ UsageLine: "fix -path=/tmp [-volumeId=234] [-collection=bigData]", Short: "run weed tool fix to recreate index file(s) if corrupted", Long: `Fix runs the SeaweedFS fix command on dat files to re-create the index .idx file. `, } var ( fixVolumePath = cmdFix.Flag.String("path", ".", "path to an individual .dat file or a folder of dat files") fixVolumeCollection = cmdFix.Flag.String("collection", "", "an optional volume collection name, if specified only it will be processed") fixVolumeId = cmdFix.Flag.Int64("volumeId", 0, "an optional volume id, if not 0 (default) only it will be processed") ) type VolumeFileScanner4Fix struct { version needle.Version nm *needle_map.MemDb } func (scanner *VolumeFileScanner4Fix) VisitSuperBlock(superBlock super_block.SuperBlock) error { scanner.version = superBlock.Version return nil } func (scanner *VolumeFileScanner4Fix) ReadNeedleBody() bool { return false } func (scanner *VolumeFileScanner4Fix) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error { glog.V(2).Infof("key %d offset %d size %d disk_size %d compressed %v", n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsCompressed()) if n.Size.IsValid() { pe := scanner.nm.Set(n.Id, types.ToOffset(offset), n.Size) glog.V(2).Infof("saved %d with error %v", n.Size, pe) } else { glog.V(2).Infof("skipping deleted file ...") return scanner.nm.Delete(n.Id) } return nil } func runFix(cmd *Command, args []string) bool { basePath, f := path.Split(util.ResolvePath(*fixVolumePath)) files := []fs.DirEntry{} if f == "" { fileInfo, err := os.ReadDir(basePath + f) if err != nil { fmt.Println(err) return false } files = fileInfo } else { fileInfo, err := os.Stat(basePath + f) if err != nil { fmt.Println(err) return false } files = []fs.DirEntry{fs.FileInfoToDirEntry(fileInfo)} } for _, file := range files { if !strings.HasSuffix(file.Name(), ".dat") { continue } if *fixVolumeCollection != "" { if !strings.HasPrefix(file.Name(), *fixVolumeCollection+"_") { continue } } baseFileName := file.Name()[:len(file.Name())-4] collection, volumeIdStr := "", baseFileName if sepIndex := strings.LastIndex(baseFileName, "_"); sepIndex > 0 { collection = baseFileName[:sepIndex] volumeIdStr = baseFileName[sepIndex+1:] } volumeId, parseErr := strconv.ParseInt(volumeIdStr, 10, 64) if parseErr != nil { fmt.Printf("Failed to parse volume id from %s: %v\n", baseFileName, parseErr) return false } if *fixVolumeId != 0 && *fixVolumeId != volumeId { continue } doFixOneVolume(basePath, baseFileName, collection, volumeId) } return true } func doFixOneVolume(basepath string, baseFileName string, collection string, volumeId int64) { indexFileName := path.Join(basepath, baseFileName+".idx") nm := needle_map.NewMemDb() defer nm.Close() vid := needle.VolumeId(volumeId) scanner := &VolumeFileScanner4Fix{ nm: nm, } if err := storage.ScanVolumeFile(basepath, collection, vid, storage.NeedleMapInMemory, scanner); err != nil { glog.Fatalf("scan .dat File: %v", err) os.Remove(indexFileName) } if err := nm.SaveToIdx(indexFileName); err != nil { glog.Fatalf("save to .idx File: %v", err) os.Remove(indexFileName) } }