mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-11 15:59:06 +08:00
611 lines
18 KiB
Go
611 lines
18 KiB
Go
package shell
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import (
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"bufio"
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"context"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"math"
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"net/http"
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"net/url"
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"os"
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"path/filepath"
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"sync"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/pb"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
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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/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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Commands = append(Commands, &commandVolumeFsck{})
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}
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type commandVolumeFsck struct {
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env *CommandEnv
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}
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func (c *commandVolumeFsck) Name() string {
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return "volume.fsck"
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}
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func (c *commandVolumeFsck) Help() string {
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return `check all volumes to find entries not used by the filer
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Important assumption!!!
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the system is all used by one filer.
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This command works this way:
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1. collect all file ids from all volumes, as set A
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2. collect all file ids from the filer, as set B
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3. find out the set A subtract B
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If -findMissingChunksInFiler is enabled, this works
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in a reverse way:
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1. collect all file ids from all volumes, as set A
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2. collect all file ids from the filer, as set B
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3. find out the set B subtract A
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`
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}
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func (c *commandVolumeFsck) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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fsckCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
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verbose := fsckCommand.Bool("v", false, "verbose mode")
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findMissingChunksInFiler := fsckCommand.Bool("findMissingChunksInFiler", false, "see \"help volume.fsck\"")
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findMissingChunksInFilerPath := fsckCommand.String("findMissingChunksInFilerPath", "/", "used together with findMissingChunksInFiler")
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applyPurging := fsckCommand.Bool("reallyDeleteFromVolume", false, "<expert only!> after detection, delete missing data from volumes / delete missing file entries from filer")
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purgeAbsent := fsckCommand.Bool("reallyDeleteFilerEntries", false, "<expert only!> delete missing file entries from filer if the corresponding volume is missing for any reason, please ensure all still existing/expected volumes are connected! used together with findMissingChunksInFiler")
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if err = fsckCommand.Parse(args); err != nil {
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return nil
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}
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if err = commandEnv.confirmIsLocked(args); err != nil {
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return
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}
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c.env = commandEnv
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// create a temp folder
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tempFolder, err := os.MkdirTemp("", "sw_fsck")
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if err != nil {
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return fmt.Errorf("failed to create temp folder: %v", err)
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}
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if *verbose {
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fmt.Fprintf(writer, "working directory: %s\n", tempFolder)
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}
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defer os.RemoveAll(tempFolder)
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// collect all volume id locations
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volumeIdToVInfo, err := c.collectVolumeIds(commandEnv, *verbose, writer)
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if err != nil {
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return fmt.Errorf("failed to collect all volume locations: %v", err)
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}
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// collect each volume file ids
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for volumeId, vinfo := range volumeIdToVInfo {
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err = c.collectOneVolumeFileIds(tempFolder, volumeId, vinfo, *verbose, writer)
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if err != nil {
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return fmt.Errorf("failed to collect file ids from volume %d on %s: %v", volumeId, vinfo.server, err)
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}
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}
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if *findMissingChunksInFiler {
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// collect all filer file ids and paths
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if err = c.collectFilerFileIdAndPaths(volumeIdToVInfo, tempFolder, writer, *findMissingChunksInFilerPath, *verbose, *purgeAbsent); err != nil {
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return fmt.Errorf("collectFilerFileIdAndPaths: %v", err)
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}
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// for each volume, check filer file ids
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if err = c.findFilerChunksMissingInVolumeServers(volumeIdToVInfo, tempFolder, writer, *verbose, *applyPurging); err != nil {
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return fmt.Errorf("findFilerChunksMissingInVolumeServers: %v", err)
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}
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} else {
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// collect all filer file ids
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if err = c.collectFilerFileIds(volumeIdToVInfo, tempFolder, writer, *verbose); err != nil {
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return fmt.Errorf("failed to collect file ids from filer: %v", err)
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}
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// volume file ids subtract filer file ids
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if err = c.findExtraChunksInVolumeServers(volumeIdToVInfo, tempFolder, writer, *verbose, *applyPurging); err != nil {
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return fmt.Errorf("findExtraChunksInVolumeServers: %v", err)
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}
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}
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return nil
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}
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func (c *commandVolumeFsck) collectFilerFileIdAndPaths(volumeIdToServer map[uint32]VInfo, tempFolder string, writer io.Writer, filerPath string, verbose bool, purgeAbsent bool) error {
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if verbose {
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fmt.Fprintf(writer, "checking each file from filer ...\n")
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}
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files := make(map[uint32]*os.File)
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for vid := range volumeIdToServer {
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dst, openErr := os.OpenFile(getFilerFileIdFile(tempFolder, vid), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
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if openErr != nil {
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return fmt.Errorf("failed to create file %s: %v", getFilerFileIdFile(tempFolder, vid), openErr)
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}
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files[vid] = dst
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}
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defer func() {
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for _, f := range files {
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f.Close()
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}
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}()
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type Item struct {
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vid uint32
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fileKey uint64
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cookie uint32
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path util.FullPath
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}
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return doTraverseBfsAndSaving(c.env, nil, filerPath, false, func(entry *filer_pb.FullEntry, outputChan chan interface{}) (err error) {
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if verbose && entry.Entry.IsDirectory {
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fmt.Fprintf(writer, "checking directory %s\n", util.NewFullPath(entry.Dir, entry.Entry.Name))
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}
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dChunks, mChunks, resolveErr := filer.ResolveChunkManifest(filer.LookupFn(c.env), entry.Entry.Chunks, 0, math.MaxInt64)
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if resolveErr != nil {
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return nil
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}
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dChunks = append(dChunks, mChunks...)
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for _, chunk := range dChunks {
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outputChan <- &Item{
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vid: chunk.Fid.VolumeId,
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fileKey: chunk.Fid.FileKey,
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cookie: chunk.Fid.Cookie,
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path: util.NewFullPath(entry.Dir, entry.Entry.Name),
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}
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}
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return nil
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}, func(outputChan chan interface{}) {
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buffer := make([]byte, 16)
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for item := range outputChan {
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i := item.(*Item)
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if f, ok := files[i.vid]; ok {
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util.Uint64toBytes(buffer, i.fileKey)
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util.Uint32toBytes(buffer[8:], i.cookie)
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util.Uint32toBytes(buffer[12:], uint32(len(i.path)))
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f.Write(buffer)
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f.Write([]byte(i.path))
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// fmt.Fprintf(writer, "%d,%x%08x %d %s\n", i.vid, i.fileKey, i.cookie, len(i.path), i.path)
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} else {
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fmt.Fprintf(writer, "%d,%x%08x %s volume not found\n", i.vid, i.fileKey, i.cookie, i.path)
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if purgeAbsent {
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fmt.Printf("deleting path %s after volume not found", i.path)
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c.httpDelete(i.path, verbose)
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}
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}
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}
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})
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}
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func (c *commandVolumeFsck) findFilerChunksMissingInVolumeServers(volumeIdToVInfo map[uint32]VInfo, tempFolder string, writer io.Writer, verbose bool, applyPurging bool) error {
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for volumeId, vinfo := range volumeIdToVInfo {
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checkErr := c.oneVolumeFileIdsCheckOneVolume(tempFolder, volumeId, writer, verbose, applyPurging)
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if checkErr != nil {
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return fmt.Errorf("failed to collect file ids from volume %d on %s: %v", volumeId, vinfo.server, checkErr)
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}
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}
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return nil
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}
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func (c *commandVolumeFsck) findExtraChunksInVolumeServers(volumeIdToVInfo map[uint32]VInfo, tempFolder string, writer io.Writer, verbose bool, applyPurging bool) error {
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var totalInUseCount, totalOrphanChunkCount, totalOrphanDataSize uint64
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for volumeId, vinfo := range volumeIdToVInfo {
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inUseCount, orphanFileIds, orphanDataSize, checkErr := c.oneVolumeFileIdsSubtractFilerFileIds(tempFolder, volumeId, writer, verbose)
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if checkErr != nil {
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return fmt.Errorf("failed to collect file ids from volume %d on %s: %v", volumeId, vinfo.server, checkErr)
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}
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totalInUseCount += inUseCount
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totalOrphanChunkCount += uint64(len(orphanFileIds))
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totalOrphanDataSize += orphanDataSize
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if verbose {
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for _, fid := range orphanFileIds {
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fmt.Fprintf(writer, "%s\n", fid)
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}
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}
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if applyPurging && len(orphanFileIds) > 0 {
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if verbose {
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fmt.Fprintf(writer, "purging process for volume %d", volumeId)
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}
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if vinfo.isEcVolume {
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fmt.Fprintf(writer, "skip purging for Erasure Coded volume %d.\n", volumeId)
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continue
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}
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needleVID := needle.VolumeId(volumeId)
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if vinfo.isReadOnly {
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err := markVolumeWritable(c.env.option.GrpcDialOption, needleVID, vinfo.server, true)
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if err != nil {
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return fmt.Errorf("mark volume %d read/write: %v", volumeId, err)
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}
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fmt.Fprintf(writer, "temporarily marked %d on server %v writable for forced purge\n", volumeId, vinfo.server)
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defer markVolumeWritable(c.env.option.GrpcDialOption, needleVID, vinfo.server, false)
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}
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fmt.Fprintf(writer, "marked %d on server %v writable for forced purge\n", volumeId, vinfo.server)
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if verbose {
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fmt.Fprintf(writer, "purging files from volume %d\n", volumeId)
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}
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if err := c.purgeFileIdsForOneVolume(volumeId, orphanFileIds, writer); err != nil {
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return fmt.Errorf("purging volume %d: %v", volumeId, err)
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}
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}
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}
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if !applyPurging {
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pct := float64(totalOrphanChunkCount*100) / (float64(totalOrphanChunkCount + totalInUseCount))
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fmt.Fprintf(writer, "\nTotal\t\tentries:%d\torphan:%d\t%.2f%%\t%dB\n",
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totalOrphanChunkCount+totalInUseCount, totalOrphanChunkCount, pct, totalOrphanDataSize)
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fmt.Fprintf(writer, "This could be normal if multiple filers or no filers are used.\n")
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}
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if totalOrphanChunkCount == 0 {
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fmt.Fprintf(writer, "no orphan data\n")
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//return nil
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}
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return nil
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}
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func (c *commandVolumeFsck) collectOneVolumeFileIds(tempFolder string, volumeId uint32, vinfo VInfo, verbose bool, writer io.Writer) error {
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if verbose {
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fmt.Fprintf(writer, "collecting volume %d file ids from %s ...\n", volumeId, vinfo.server)
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}
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return operation.WithVolumeServerClient(false, vinfo.server, c.env.option.GrpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
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ext := ".idx"
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if vinfo.isEcVolume {
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ext = ".ecx"
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}
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copyFileClient, err := volumeServerClient.CopyFile(context.Background(), &volume_server_pb.CopyFileRequest{
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VolumeId: volumeId,
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Ext: ext,
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CompactionRevision: math.MaxUint32,
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StopOffset: math.MaxInt64,
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Collection: vinfo.collection,
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IsEcVolume: vinfo.isEcVolume,
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IgnoreSourceFileNotFound: false,
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})
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if err != nil {
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return fmt.Errorf("failed to start copying volume %d%s: %v", volumeId, ext, err)
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}
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err = writeToFile(copyFileClient, getVolumeFileIdFile(tempFolder, volumeId))
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if err != nil {
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return fmt.Errorf("failed to copy %d%s from %s: %v", volumeId, ext, vinfo.server, err)
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}
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return nil
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})
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}
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func (c *commandVolumeFsck) collectFilerFileIds(volumeIdToServer map[uint32]VInfo, tempFolder string, writer io.Writer, verbose bool) error {
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if verbose {
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fmt.Fprintf(writer, "collecting file ids from filer ...\n")
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}
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files := make(map[uint32]*os.File)
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for vid := range volumeIdToServer {
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dst, openErr := os.OpenFile(getFilerFileIdFile(tempFolder, vid), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
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if openErr != nil {
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return fmt.Errorf("failed to create file %s: %v", getFilerFileIdFile(tempFolder, vid), openErr)
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}
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files[vid] = dst
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}
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defer func() {
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for _, f := range files {
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f.Close()
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}
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}()
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type Item struct {
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vid uint32
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fileKey uint64
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}
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return doTraverseBfsAndSaving(c.env, nil, "/", false, func(entry *filer_pb.FullEntry, outputChan chan interface{}) (err error) {
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dChunks, mChunks, resolveErr := filer.ResolveChunkManifest(filer.LookupFn(c.env), entry.Entry.Chunks, 0, math.MaxInt64)
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if resolveErr != nil {
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if verbose {
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fmt.Fprintf(writer, "resolving manifest chunks in %s: %v\n", util.NewFullPath(entry.Dir, entry.Entry.Name), resolveErr)
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}
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return nil
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}
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dChunks = append(dChunks, mChunks...)
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for _, chunk := range dChunks {
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outputChan <- &Item{
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vid: chunk.Fid.VolumeId,
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fileKey: chunk.Fid.FileKey,
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}
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}
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return nil
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}, func(outputChan chan interface{}) {
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buffer := make([]byte, 8)
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for item := range outputChan {
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i := item.(*Item)
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util.Uint64toBytes(buffer, i.fileKey)
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files[i.vid].Write(buffer)
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}
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})
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}
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func (c *commandVolumeFsck) oneVolumeFileIdsCheckOneVolume(tempFolder string, volumeId uint32, writer io.Writer, verbose bool, applyPurging bool) (err error) {
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if verbose {
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fmt.Fprintf(writer, "find missing file chunks in volume %d ...\n", volumeId)
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}
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db := needle_map.NewMemDb()
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defer db.Close()
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if err = db.LoadFromIdx(getVolumeFileIdFile(tempFolder, volumeId)); err != nil {
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return
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}
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file := getFilerFileIdFile(tempFolder, volumeId)
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fp, err := os.Open(file)
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if err != nil {
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return
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}
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defer fp.Close()
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type Item struct {
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fileKey uint64
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cookie uint32
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path util.FullPath
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}
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br := bufio.NewReader(fp)
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buffer := make([]byte, 16)
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item := &Item{}
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var readSize int
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for {
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readSize, err = io.ReadFull(br, buffer)
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if err != nil || readSize != 16 {
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break
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}
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item.fileKey = util.BytesToUint64(buffer[:8])
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item.cookie = util.BytesToUint32(buffer[8:12])
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pathSize := util.BytesToUint32(buffer[12:16])
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pathBytes := make([]byte, int(pathSize))
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n, err := io.ReadFull(br, pathBytes)
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if err != nil {
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fmt.Fprintf(writer, "%d,%x%08x in unexpected error: %v\n", volumeId, item.fileKey, item.cookie, err)
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}
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if n != int(pathSize) {
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fmt.Fprintf(writer, "%d,%x%08x %d unexpected file name size %d\n", volumeId, item.fileKey, item.cookie, pathSize, n)
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}
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item.path = util.FullPath(string(pathBytes))
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needleId := types.NeedleId(item.fileKey)
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if _, found := db.Get(needleId); !found {
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fmt.Fprintf(writer, "%s\n", item.path)
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if applyPurging {
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// defining the URL this way automatically escapes complex path names
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c.httpDelete(item.path, verbose)
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}
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}
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}
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return nil
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}
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func (c *commandVolumeFsck) httpDelete(path util.FullPath, verbose bool) {
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req, err := http.NewRequest(http.MethodDelete, "", nil)
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req.URL = &url.URL{
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Scheme: "http",
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Host: c.env.option.FilerAddress.ToHttpAddress(),
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Path: string(path),
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}
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if verbose {
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fmt.Printf("full HTTP delete request to be sent: %v\n", req)
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}
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if err != nil {
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fmt.Errorf("HTTP delete request error: %v\n", err)
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}
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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fmt.Errorf("DELETE fetch error: %v\n", err)
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}
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defer resp.Body.Close()
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_, err = ioutil.ReadAll(resp.Body)
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if err != nil {
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fmt.Errorf("DELETE response error: %v\n", err)
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}
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if verbose {
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fmt.Println("delete response Status : ", resp.Status)
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fmt.Println("delete response Headers : ", resp.Header)
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}
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}
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func (c *commandVolumeFsck) oneVolumeFileIdsSubtractFilerFileIds(tempFolder string, volumeId uint32, writer io.Writer, verbose bool) (inUseCount uint64, orphanFileIds []string, orphanDataSize uint64, err error) {
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db := needle_map.NewMemDb()
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defer db.Close()
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if err = db.LoadFromIdx(getVolumeFileIdFile(tempFolder, volumeId)); err != nil {
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return
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}
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filerFileIdsData, err := os.ReadFile(getFilerFileIdFile(tempFolder, volumeId))
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if err != nil {
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return
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}
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dataLen := len(filerFileIdsData)
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if dataLen%8 != 0 {
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return 0, nil, 0, fmt.Errorf("filer data is corrupted")
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}
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for i := 0; i < len(filerFileIdsData); i += 8 {
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fileKey := util.BytesToUint64(filerFileIdsData[i : i+8])
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|
db.Delete(types.NeedleId(fileKey))
|
|
inUseCount++
|
|
}
|
|
|
|
var orphanFileCount uint64
|
|
db.AscendingVisit(func(n needle_map.NeedleValue) error {
|
|
// fmt.Printf("%d,%x\n", volumeId, n.Key)
|
|
orphanFileIds = append(orphanFileIds, fmt.Sprintf("%d,%s00000000", volumeId, n.Key.String()))
|
|
orphanFileCount++
|
|
orphanDataSize += uint64(n.Size)
|
|
return nil
|
|
})
|
|
|
|
if orphanFileCount > 0 {
|
|
pct := float64(orphanFileCount*100) / (float64(orphanFileCount + inUseCount))
|
|
fmt.Fprintf(writer, "volume:%d\tentries:%d\torphan:%d\t%.2f%%\t%dB\n",
|
|
volumeId, orphanFileCount+inUseCount, orphanFileCount, pct, orphanDataSize)
|
|
}
|
|
|
|
return
|
|
|
|
}
|
|
|
|
type VInfo struct {
|
|
server pb.ServerAddress
|
|
collection string
|
|
isEcVolume bool
|
|
isReadOnly bool
|
|
}
|
|
|
|
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)
|
|
// collect topology information
|
|
topologyInfo, _, err := collectTopologyInfo(commandEnv, 0)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
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{
|
|
server: pb.NewServerAddressFromDataNode(t),
|
|
collection: vi.Collection,
|
|
isEcVolume: false,
|
|
isReadOnly: vi.ReadOnly,
|
|
}
|
|
}
|
|
for _, ecShardInfo := range diskInfo.EcShardInfos {
|
|
volumeIdToServer[ecShardInfo.Id] = VInfo{
|
|
server: pb.NewServerAddressFromDataNode(t),
|
|
collection: ecShardInfo.Collection,
|
|
isEcVolume: true,
|
|
isReadOnly: true,
|
|
}
|
|
}
|
|
}
|
|
})
|
|
|
|
if verbose {
|
|
fmt.Fprintf(writer, "collected %d volumes and locations.\n", len(volumeIdToServer))
|
|
}
|
|
return
|
|
}
|
|
|
|
func (c *commandVolumeFsck) purgeFileIdsForOneVolume(volumeId uint32, fileIds []string, writer io.Writer) (err error) {
|
|
fmt.Fprintf(writer, "purging orphan data for volume %d...\n", volumeId)
|
|
locations, found := c.env.MasterClient.GetLocations(volumeId)
|
|
if !found {
|
|
return fmt.Errorf("failed to find volume %d locations", volumeId)
|
|
}
|
|
|
|
resultChan := make(chan []*volume_server_pb.DeleteResult, len(locations))
|
|
var wg sync.WaitGroup
|
|
for _, location := range locations {
|
|
wg.Add(1)
|
|
go func(server pb.ServerAddress, fidList []string) {
|
|
defer wg.Done()
|
|
|
|
if deleteResults, deleteErr := operation.DeleteFilesAtOneVolumeServer(server, c.env.option.GrpcDialOption, fidList, false); deleteErr != nil {
|
|
err = deleteErr
|
|
} else if deleteResults != nil {
|
|
resultChan <- deleteResults
|
|
}
|
|
|
|
}(location.ServerAddress(), fileIds)
|
|
}
|
|
wg.Wait()
|
|
close(resultChan)
|
|
|
|
for results := range resultChan {
|
|
for _, result := range results {
|
|
if result.Error != "" {
|
|
fmt.Fprintf(writer, "purge error: %s\n", result.Error)
|
|
}
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func getVolumeFileIdFile(tempFolder string, vid uint32) string {
|
|
return filepath.Join(tempFolder, fmt.Sprintf("%d.idx", vid))
|
|
}
|
|
|
|
func getFilerFileIdFile(tempFolder string, vid uint32) string {
|
|
return filepath.Join(tempFolder, fmt.Sprintf("%d.fid", vid))
|
|
}
|
|
|
|
func writeToFile(client volume_server_pb.VolumeServer_CopyFileClient, fileName string) error {
|
|
flags := os.O_WRONLY | os.O_CREATE | os.O_TRUNC
|
|
dst, err := os.OpenFile(fileName, flags, 0644)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
defer dst.Close()
|
|
|
|
for {
|
|
resp, receiveErr := client.Recv()
|
|
if receiveErr == io.EOF {
|
|
break
|
|
}
|
|
if receiveErr != nil {
|
|
return fmt.Errorf("receiving %s: %v", fileName, receiveErr)
|
|
}
|
|
dst.Write(resp.FileContent)
|
|
}
|
|
return nil
|
|
}
|