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volume: atomic copying file, adds version and stopOffset

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This commit is contained in:
Chris Lu 2019-04-19 12:29:49 -07:00
parent 730a032137
commit 3b3651dea3
9 changed files with 168 additions and 113 deletions
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4
weed/command/backup.go
View file

@ -90,7 +90,7 @@ func runBackup(cmd *Command, args []string) bool {
return true
}
if v.SuperBlock.CompactRevision < uint16(stats.CompactRevision) {
if v.SuperBlock.CompactionRevision < uint16(stats.CompactRevision) {
if err = v.Compact(0); err != nil {
fmt.Printf("Compact Volume before synchronizing %v\n", err)
return true
@ -99,7 +99,7 @@ func runBackup(cmd *Command, args []string) bool {
fmt.Printf("Commit Compact before synchronizing %v\n", err)
return true
}
v.SuperBlock.CompactRevision = uint16(stats.CompactRevision)
v.SuperBlock.CompactionRevision = uint16(stats.CompactRevision)
v.DataFile().WriteAt(v.SuperBlock.Bytes(), 0)
}

3
weed/pb/volume_server.proto
View file

@ -162,6 +162,8 @@ message CopyFileRequest {
uint32 volume_id = 1;
bool is_idx_file = 2;
bool is_dat_file = 3;
uint32 compaction_revision = 4;
uint64 stop_offset = 5;
}
message CopyFileResponse {
bytes file_content = 1;
@ -188,6 +190,7 @@ message ReadVolumeFileStatusResponse {
uint64 dat_file_timestamp_seconds = 4;
uint64 dat_file_size = 5;
uint64 file_count = 6;
uint32 compaction_revision = 7;
}
message DiskStatus {

203
weed/pb/volume_server_pb/volume_server.pb.go
View file

@ -597,9 +597,11 @@ func (m *VolumeCopyResponse) GetLastAppendAtNs() uint64 {
}
type CopyFileRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
IsIdxFile bool `protobuf:"varint,2,opt,name=is_idx_file,json=isIdxFile" json:"is_idx_file,omitempty"`
IsDatFile bool `protobuf:"varint,3,opt,name=is_dat_file,json=isDatFile" json:"is_dat_file,omitempty"`
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
IsIdxFile bool `protobuf:"varint,2,opt,name=is_idx_file,json=isIdxFile" json:"is_idx_file,omitempty"`
IsDatFile bool `protobuf:"varint,3,opt,name=is_dat_file,json=isDatFile" json:"is_dat_file,omitempty"`
CompactionRevision uint32 `protobuf:"varint,4,opt,name=compaction_revision,json=compactionRevision" json:"compaction_revision,omitempty"`
StopOffset uint64 `protobuf:"varint,5,opt,name=stop_offset,json=stopOffset" json:"stop_offset,omitempty"`
}
func (m *CopyFileRequest) Reset() { *m = CopyFileRequest{} }
@ -628,6 +630,20 @@ func (m *CopyFileRequest) GetIsDatFile() bool {
return false
}
func (m *CopyFileRequest) GetCompactionRevision() uint32 {
if m != nil {
return m.CompactionRevision
}
return 0
}
func (m *CopyFileRequest) GetStopOffset() uint64 {
if m != nil {
return m.StopOffset
}
return 0
}
type CopyFileResponse struct {
FileContent []byte `protobuf:"bytes,1,opt,name=file_content,json=fileContent,proto3" json:"file_content,omitempty"`
}
@ -731,6 +747,7 @@ type ReadVolumeFileStatusResponse struct {
DatFileTimestampSeconds uint64 `protobuf:"varint,4,opt,name=dat_file_timestamp_seconds,json=datFileTimestampSeconds" json:"dat_file_timestamp_seconds,omitempty"`
DatFileSize uint64 `protobuf:"varint,5,opt,name=dat_file_size,json=datFileSize" json:"dat_file_size,omitempty"`
FileCount uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount" json:"file_count,omitempty"`
CompactionRevision uint32 `protobuf:"varint,7,opt,name=compaction_revision,json=compactionRevision" json:"compaction_revision,omitempty"`
}
func (m *ReadVolumeFileStatusResponse) Reset() { *m = ReadVolumeFileStatusResponse{} }
@ -780,6 +797,13 @@ func (m *ReadVolumeFileStatusResponse) GetFileCount() uint64 {
return 0
}
func (m *ReadVolumeFileStatusResponse) GetCompactionRevision() uint32 {
if m != nil {
return m.CompactionRevision
}
return 0
}
type DiskStatus struct {
Dir string `protobuf:"bytes,1,opt,name=dir" json:"dir,omitempty"`
All uint64 `protobuf:"varint,2,opt,name=all" json:"all,omitempty"`
@ -1579,89 +1603,92 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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0x00, 0x00,
}

41
weed/server/volume_grpc_copy.go
View file

@ -52,9 +52,13 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
return fmt.Errorf("read volume file status failed, %v", err)
}
// println("source:", volFileInfoResp.String())
copyFileClient, err := client.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
VolumeId: req.VolumeId,
IsIdxFile: true,
VolumeId: req.VolumeId,
IsIdxFile: true,
CompactionRevision: volFileInfoResp.CompactionRevision,
StopOffset: volFileInfoResp.IdxFileSize,
})
if err != nil {
return fmt.Errorf("failed to start copying volume %d idx file: %v", req.VolumeId, err)
@ -66,8 +70,10 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
}
copyFileClient, err = client.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
VolumeId: req.VolumeId,
IsDatFile: true,
VolumeId: req.VolumeId,
IsDatFile: true,
CompactionRevision: volFileInfoResp.CompactionRevision,
StopOffset: volFileInfoResp.DatFileSize,
})
if err != nil {
return fmt.Errorf("failed to start copying volume %d dat file: %v", req.VolumeId, err)
@ -97,7 +103,7 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
}
return &volume_server_pb.VolumeCopyResponse{
LastAppendAtNs:volFileInfoResp.DatFileTimestampSeconds*uint64(time.Second),
LastAppendAtNs: volFileInfoResp.DatFileTimestampSeconds * uint64(time.Second),
}, err
}
@ -161,6 +167,7 @@ func (vs *VolumeServer) ReadVolumeFileStatus(ctx context.Context, req *volume_se
resp.DatFileTimestampSeconds = uint64(modTime.Unix())
resp.IdxFileTimestampSeconds = uint64(modTime.Unix())
resp.FileCount = v.FileCount()
resp.CompactionRevision = uint32(v.CompactionRevision)
return resp, nil
}
@ -171,7 +178,13 @@ func (vs *VolumeServer) CopyFile(req *volume_server_pb.CopyFileRequest, stream v
return fmt.Errorf("not found volume id %d", req.VolumeId)
}
const BufferSize = 1024 * 16
if uint32(v.CompactionRevision) != req.CompactionRevision {
return fmt.Errorf("volume %d is compacted", req.VolumeId)
}
bytesToRead := int64(req.StopOffset)
const BufferSize = 1024 * 1024 * 2
var fileName = v.FileName()
if req.IsDatFile {
fileName += ".dat"
@ -186,19 +199,31 @@ func (vs *VolumeServer) CopyFile(req *volume_server_pb.CopyFileRequest, stream v
buffer := make([]byte, BufferSize)
for {
for bytesToRead > 0 {
bytesread, err := file.Read(buffer)
// println(fileName, "read", bytesread, "bytes, with target", bytesToRead)
if err != nil {
if err != io.EOF {
return err
}
// println(fileName, "read", bytesread, "bytes, with target", bytesToRead, "err", err.Error())
break
}
stream.Send(&volume_server_pb.CopyFileResponse{
if int64(bytesread) > bytesToRead {
bytesread = int(bytesToRead)
}
err = stream.Send(&volume_server_pb.CopyFileResponse{
FileContent: buffer[:bytesread],
})
if err != nil {
// println("sending", bytesread, "bytes err", err.Error())
return err
}
bytesToRead -= int64(bytesread)
}

2
weed/storage/store.go
View file

@ -125,7 +125,7 @@ func (s *Store) Status() []*VolumeInfo {
DeletedByteCount: v.nm.DeletedSize(),
ReadOnly: v.readOnly,
Ttl: v.Ttl,
CompactRevision: uint32(v.CompactRevision),
CompactRevision: uint32(v.CompactionRevision),
}
stats = append(stats, s)
}

2
weed/storage/volume.go
View file

@ -166,6 +166,6 @@ func (v *Volume) ToVolumeInformationMessage() *master_pb.VolumeInformationMessag
ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()),
Version: uint32(v.Version()),
Ttl: v.Ttl.ToUint32(),
CompactRevision: uint32(v.SuperBlock.CompactRevision),
CompactRevision: uint32(v.SuperBlock.CompactionRevision),
}
}

2
weed/storage/volume_backup.go
View file

@ -20,7 +20,7 @@ func (v *Volume) GetVolumeSyncStatus() *volume_server_pb.VolumeSyncStatusRespons
}
syncStatus.Collection = v.Collection
syncStatus.IdxFileSize = v.nm.IndexFileSize()
syncStatus.CompactRevision = uint32(v.SuperBlock.CompactRevision)
syncStatus.CompactRevision = uint32(v.SuperBlock.CompactionRevision)
syncStatus.Ttl = v.SuperBlock.Ttl.String()
syncStatus.Replication = v.SuperBlock.ReplicaPlacement.String()
return syncStatus

16
weed/storage/volume_super_block.go
View file

@ -24,12 +24,12 @@ const (
* Rest bytes: Reserved
*/
type SuperBlock struct {
version needle.Version
ReplicaPlacement *ReplicaPlacement
Ttl *needle.TTL
CompactRevision uint16
Extra *master_pb.SuperBlockExtra
extraSize uint16
version needle.Version
ReplicaPlacement *ReplicaPlacement
Ttl *needle.TTL
CompactionRevision uint16
Extra *master_pb.SuperBlockExtra
extraSize uint16
}
func (s *SuperBlock) BlockSize() int {
@ -48,7 +48,7 @@ func (s *SuperBlock) Bytes() []byte {
header[0] = byte(s.version)
header[1] = s.ReplicaPlacement.Byte()
s.Ttl.ToBytes(header[2:4])
util.Uint16toBytes(header[4:6], s.CompactRevision)
util.Uint16toBytes(header[4:6], s.CompactionRevision)
if s.Extra != nil {
extraData, err := proto.Marshal(s.Extra)
@ -112,7 +112,7 @@ func ReadSuperBlock(dataFile *os.File) (superBlock SuperBlock, err error) {
return
}
superBlock.Ttl = needle.LoadTTLFromBytes(header[2:4])
superBlock.CompactRevision = util.BytesToUint16(header[4:6])
superBlock.CompactionRevision = util.BytesToUint16(header[4:6])
superBlock.extraSize = util.BytesToUint16(header[6:8])
if superBlock.extraSize > 0 {

8
weed/storage/volume_vacuum.go
View file

@ -27,7 +27,7 @@ func (v *Volume) Compact(preallocate int64) error {
filePath := v.FileName()
v.lastCompactIndexOffset = v.nm.IndexFileSize()
v.lastCompactRevision = v.SuperBlock.CompactRevision
v.lastCompactRevision = v.SuperBlock.CompactionRevision
glog.V(3).Infof("creating copies for volume %d ,last offset %d...", v.Id, v.lastCompactIndexOffset)
return v.copyDataAndGenerateIndexFile(filePath+".cpd", filePath+".cpx", preallocate)
}
@ -105,7 +105,7 @@ func fetchCompactRevisionFromDatFile(file *os.File) (compactRevision uint16, err
if err != nil {
return 0, err
}
return superBlock.CompactRevision, nil
return superBlock.CompactionRevision, nil
}
func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldIdxFileName string) (err error) {
@ -246,7 +246,7 @@ type VolumeFileScanner4Vacuum struct {
func (scanner *VolumeFileScanner4Vacuum) VisitSuperBlock(superBlock SuperBlock) error {
scanner.version = superBlock.Version()
superBlock.CompactRevision++
superBlock.CompactionRevision++
_, err := scanner.dst.Write(superBlock.Bytes())
scanner.newOffset = int64(superBlock.BlockSize())
return err
@ -321,7 +321,7 @@ func (v *Volume) copyDataBasedOnIndexFile(dstName, idxName string) (err error) {
nm := NewBtreeNeedleMap(idx)
now := uint64(time.Now().Unix())
v.SuperBlock.CompactRevision++
v.SuperBlock.CompactionRevision++
dst.Write(v.SuperBlock.Bytes())
newOffset := int64(v.SuperBlock.BlockSize())