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Code Issues Projects Releases Wiki Activity

fix multiple bugs

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This commit is contained in:
Chris Lu 2019-06-03 02:26:31 -07:00
parent 55be09996d
commit 7e80b2b882
15 changed files with 960 additions and 370 deletions
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16
weed/pb/volume_server.proto
View file

@ -50,6 +50,8 @@ service VolumeServer {
// erasure coding
rpc VolumeEcShardsGenerate (VolumeEcShardsGenerateRequest) returns (VolumeEcShardsGenerateResponse) {
}
rpc VolumeEcShardsRebuild (VolumeEcShardsRebuildRequest) returns (VolumeEcShardsRebuildResponse) {
}
rpc VolumeEcShardsCopy (VolumeEcShardsCopyRequest) returns (VolumeEcShardsCopyResponse) {
}
rpc VolumeEcShardsDelete (VolumeEcShardsDeleteRequest) returns (VolumeEcShardsDeleteResponse) {
@ -61,7 +63,6 @@ service VolumeServer {
rpc VolumeEcShardRead (VolumeEcShardReadRequest) returns (stream VolumeEcShardReadResponse) {
}
}
//////////////////////////////////////////////////
@ -180,6 +181,8 @@ message CopyFileRequest {
string ext = 2;
uint32 compaction_revision = 3;
uint64 stop_offset = 4;
string collection = 5;
bool is_ec_volume = 6;
}
message CopyFileResponse {
bytes file_content = 1;
@ -212,10 +215,19 @@ message VolumeEcShardsGenerateRequest {
message VolumeEcShardsGenerateResponse {
}
message VolumeEcShardsRebuildRequest {
uint32 volume_id = 1;
string collection = 2;
}
message VolumeEcShardsRebuildResponse {
repeated uint32 rebuilt_shard_ids = 1;
}
message VolumeEcShardsCopyRequest {
uint32 volume_id = 1;
string collection = 2;
repeated uint32 shard_ids = 3;
bool copy_ecx_file = 4;
string source_data_node = 5;
}
message VolumeEcShardsCopyResponse {
@ -223,7 +235,7 @@ message VolumeEcShardsCopyResponse {
message VolumeEcShardsDeleteRequest {
uint32 volume_id = 1;
bool should_delete_ecx = 2;
string collection = 2;
repeated uint32 shard_ids = 3;
}
message VolumeEcShardsDeleteResponse {

364
weed/pb/volume_server_pb/volume_server.pb.go
View file

@ -45,6 +45,8 @@ It has these top-level messages:
VolumeTailReceiverResponse
VolumeEcShardsGenerateRequest
VolumeEcShardsGenerateResponse
VolumeEcShardsRebuildRequest
VolumeEcShardsRebuildResponse
VolumeEcShardsCopyRequest
VolumeEcShardsCopyResponse
VolumeEcShardsDeleteRequest
@ -615,6 +617,8 @@ type CopyFileRequest struct {
Ext string `protobuf:"bytes,2,opt,name=ext" json:"ext,omitempty"`
CompactionRevision uint32 `protobuf:"varint,3,opt,name=compaction_revision,json=compactionRevision" json:"compaction_revision,omitempty"`
StopOffset uint64 `protobuf:"varint,4,opt,name=stop_offset,json=stopOffset" json:"stop_offset,omitempty"`
Collection string `protobuf:"bytes,5,opt,name=collection" json:"collection,omitempty"`
IsEcVolume bool `protobuf:"varint,6,opt,name=is_ec_volume,json=isEcVolume" json:"is_ec_volume,omitempty"`
}
func (m *CopyFileRequest) Reset() { *m = CopyFileRequest{} }
@ -650,6 +654,20 @@ func (m *CopyFileRequest) GetStopOffset() uint64 {
return 0
}
func (m *CopyFileRequest) GetCollection() string {
if m != nil {
return m.Collection
}
return ""
}
func (m *CopyFileRequest) GetIsEcVolume() bool {
if m != nil {
return m.IsEcVolume
}
return false
}
type CopyFileResponse struct {
FileContent []byte `protobuf:"bytes,1,opt,name=file_content,json=fileContent,proto3" json:"file_content,omitempty"`
}
@ -810,17 +828,58 @@ func (m *VolumeEcShardsGenerateResponse) String() string { return pro
func (*VolumeEcShardsGenerateResponse) ProtoMessage() {}
func (*VolumeEcShardsGenerateResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{35} }
type VolumeEcShardsRebuildRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
Collection string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
}
func (m *VolumeEcShardsRebuildRequest) Reset() { *m = VolumeEcShardsRebuildRequest{} }
func (m *VolumeEcShardsRebuildRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsRebuildRequest) ProtoMessage() {}
func (*VolumeEcShardsRebuildRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{36} }
func (m *VolumeEcShardsRebuildRequest) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
func (m *VolumeEcShardsRebuildRequest) GetCollection() string {
if m != nil {
return m.Collection
}
return ""
}
type VolumeEcShardsRebuildResponse struct {
RebuiltShardIds []uint32 `protobuf:"varint,1,rep,packed,name=rebuilt_shard_ids,json=rebuiltShardIds" json:"rebuilt_shard_ids,omitempty"`
}
func (m *VolumeEcShardsRebuildResponse) Reset() { *m = VolumeEcShardsRebuildResponse{} }
func (m *VolumeEcShardsRebuildResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsRebuildResponse) ProtoMessage() {}
func (*VolumeEcShardsRebuildResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{37} }
func (m *VolumeEcShardsRebuildResponse) GetRebuiltShardIds() []uint32 {
if m != nil {
return m.RebuiltShardIds
}
return nil
}
type VolumeEcShardsCopyRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
Collection string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
ShardIds []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds" json:"shard_ids,omitempty"`
CopyEcxFile bool `protobuf:"varint,4,opt,name=copy_ecx_file,json=copyEcxFile" json:"copy_ecx_file,omitempty"`
SourceDataNode string `protobuf:"bytes,5,opt,name=source_data_node,json=sourceDataNode" json:"source_data_node,omitempty"`
}
func (m *VolumeEcShardsCopyRequest) Reset() { *m = VolumeEcShardsCopyRequest{} }
func (m *VolumeEcShardsCopyRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsCopyRequest) ProtoMessage() {}
func (*VolumeEcShardsCopyRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{36} }
func (*VolumeEcShardsCopyRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{38} }
func (m *VolumeEcShardsCopyRequest) GetVolumeId() uint32 {
if m != nil {
@ -843,6 +902,13 @@ func (m *VolumeEcShardsCopyRequest) GetShardIds() []uint32 {
return nil
}
func (m *VolumeEcShardsCopyRequest) GetCopyEcxFile() bool {
if m != nil {
return m.CopyEcxFile
}
return false
}
func (m *VolumeEcShardsCopyRequest) GetSourceDataNode() string {
if m != nil {
return m.SourceDataNode
@ -856,18 +922,18 @@ type VolumeEcShardsCopyResponse struct {
func (m *VolumeEcShardsCopyResponse) Reset() { *m = VolumeEcShardsCopyResponse{} }
func (m *VolumeEcShardsCopyResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsCopyResponse) ProtoMessage() {}
func (*VolumeEcShardsCopyResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{37} }
func (*VolumeEcShardsCopyResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{39} }
type VolumeEcShardsDeleteRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
ShouldDeleteEcx bool `protobuf:"varint,2,opt,name=should_delete_ecx,json=shouldDeleteEcx" json:"should_delete_ecx,omitempty"`
ShardIds []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds" json:"shard_ids,omitempty"`
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
Collection string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
ShardIds []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds" json:"shard_ids,omitempty"`
}
func (m *VolumeEcShardsDeleteRequest) Reset() { *m = VolumeEcShardsDeleteRequest{} }
func (m *VolumeEcShardsDeleteRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsDeleteRequest) ProtoMessage() {}
func (*VolumeEcShardsDeleteRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{38} }
func (*VolumeEcShardsDeleteRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{40} }
func (m *VolumeEcShardsDeleteRequest) GetVolumeId() uint32 {
if m != nil {
@ -876,11 +942,11 @@ func (m *VolumeEcShardsDeleteRequest) GetVolumeId() uint32 {
return 0
}
func (m *VolumeEcShardsDeleteRequest) GetShouldDeleteEcx() bool {
func (m *VolumeEcShardsDeleteRequest) GetCollection() string {
if m != nil {
return m.ShouldDeleteEcx
return m.Collection
}
return false
return ""
}
func (m *VolumeEcShardsDeleteRequest) GetShardIds() []uint32 {
@ -896,7 +962,7 @@ type VolumeEcShardsDeleteResponse struct {
func (m *VolumeEcShardsDeleteResponse) Reset() { *m = VolumeEcShardsDeleteResponse{} }
func (m *VolumeEcShardsDeleteResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsDeleteResponse) ProtoMessage() {}
func (*VolumeEcShardsDeleteResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{39} }
func (*VolumeEcShardsDeleteResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{41} }
type VolumeEcShardsMountRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
@ -907,7 +973,7 @@ type VolumeEcShardsMountRequest struct {
func (m *VolumeEcShardsMountRequest) Reset() { *m = VolumeEcShardsMountRequest{} }
func (m *VolumeEcShardsMountRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsMountRequest) ProtoMessage() {}
func (*VolumeEcShardsMountRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{40} }
func (*VolumeEcShardsMountRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{42} }
func (m *VolumeEcShardsMountRequest) GetVolumeId() uint32 {
if m != nil {
@ -936,7 +1002,7 @@ type VolumeEcShardsMountResponse struct {
func (m *VolumeEcShardsMountResponse) Reset() { *m = VolumeEcShardsMountResponse{} }
func (m *VolumeEcShardsMountResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsMountResponse) ProtoMessage() {}
func (*VolumeEcShardsMountResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{41} }
func (*VolumeEcShardsMountResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{43} }
type VolumeEcShardsUnmountRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
@ -946,7 +1012,7 @@ type VolumeEcShardsUnmountRequest struct {
func (m *VolumeEcShardsUnmountRequest) Reset() { *m = VolumeEcShardsUnmountRequest{} }
func (m *VolumeEcShardsUnmountRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsUnmountRequest) ProtoMessage() {}
func (*VolumeEcShardsUnmountRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{42} }
func (*VolumeEcShardsUnmountRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{44} }
func (m *VolumeEcShardsUnmountRequest) GetVolumeId() uint32 {
if m != nil {
@ -968,7 +1034,7 @@ type VolumeEcShardsUnmountResponse struct {
func (m *VolumeEcShardsUnmountResponse) Reset() { *m = VolumeEcShardsUnmountResponse{} }
func (m *VolumeEcShardsUnmountResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardsUnmountResponse) ProtoMessage() {}
func (*VolumeEcShardsUnmountResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{43} }
func (*VolumeEcShardsUnmountResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{45} }
type VolumeEcShardReadRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
@ -980,7 +1046,7 @@ type VolumeEcShardReadRequest struct {
func (m *VolumeEcShardReadRequest) Reset() { *m = VolumeEcShardReadRequest{} }
func (m *VolumeEcShardReadRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardReadRequest) ProtoMessage() {}
func (*VolumeEcShardReadRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{44} }
func (*VolumeEcShardReadRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{46} }
func (m *VolumeEcShardReadRequest) GetVolumeId() uint32 {
if m != nil {
@ -1017,7 +1083,7 @@ type VolumeEcShardReadResponse struct {
func (m *VolumeEcShardReadResponse) Reset() { *m = VolumeEcShardReadResponse{} }
func (m *VolumeEcShardReadResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeEcShardReadResponse) ProtoMessage() {}
func (*VolumeEcShardReadResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{45} }
func (*VolumeEcShardReadResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{47} }
func (m *VolumeEcShardReadResponse) GetData() []byte {
if m != nil {
@ -1033,7 +1099,7 @@ type ReadVolumeFileStatusRequest struct {
func (m *ReadVolumeFileStatusRequest) Reset() { *m = ReadVolumeFileStatusRequest{} }
func (m *ReadVolumeFileStatusRequest) String() string { return proto.CompactTextString(m) }
func (*ReadVolumeFileStatusRequest) ProtoMessage() {}
func (*ReadVolumeFileStatusRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{46} }
func (*ReadVolumeFileStatusRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{48} }
func (m *ReadVolumeFileStatusRequest) GetVolumeId() uint32 {
if m != nil {
@ -1056,7 +1122,7 @@ type ReadVolumeFileStatusResponse struct {
func (m *ReadVolumeFileStatusResponse) Reset() { *m = ReadVolumeFileStatusResponse{} }
func (m *ReadVolumeFileStatusResponse) String() string { return proto.CompactTextString(m) }
func (*ReadVolumeFileStatusResponse) ProtoMessage() {}
func (*ReadVolumeFileStatusResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{47} }
func (*ReadVolumeFileStatusResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{49} }
func (m *ReadVolumeFileStatusResponse) GetVolumeId() uint32 {
if m != nil {
@ -1124,7 +1190,7 @@ type DiskStatus struct {
func (m *DiskStatus) Reset() { *m = DiskStatus{} }
func (m *DiskStatus) String() string { return proto.CompactTextString(m) }
func (*DiskStatus) ProtoMessage() {}
func (*DiskStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{48} }
func (*DiskStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{50} }
func (m *DiskStatus) GetDir() string {
if m != nil {
@ -1167,7 +1233,7 @@ type MemStatus struct {
func (m *MemStatus) Reset() { *m = MemStatus{} }
func (m *MemStatus) String() string { return proto.CompactTextString(m) }
func (*MemStatus) ProtoMessage() {}
func (*MemStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{49} }
func (*MemStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{51} }
func (m *MemStatus) GetGoroutines() int32 {
if m != nil {
@ -1255,6 +1321,8 @@ func init() {
proto.RegisterType((*VolumeTailReceiverResponse)(nil), "volume_server_pb.VolumeTailReceiverResponse")
proto.RegisterType((*VolumeEcShardsGenerateRequest)(nil), "volume_server_pb.VolumeEcShardsGenerateRequest")
proto.RegisterType((*VolumeEcShardsGenerateResponse)(nil), "volume_server_pb.VolumeEcShardsGenerateResponse")
proto.RegisterType((*VolumeEcShardsRebuildRequest)(nil), "volume_server_pb.VolumeEcShardsRebuildRequest")
proto.RegisterType((*VolumeEcShardsRebuildResponse)(nil), "volume_server_pb.VolumeEcShardsRebuildResponse")
proto.RegisterType((*VolumeEcShardsCopyRequest)(nil), "volume_server_pb.VolumeEcShardsCopyRequest")
proto.RegisterType((*VolumeEcShardsCopyResponse)(nil), "volume_server_pb.VolumeEcShardsCopyResponse")
proto.RegisterType((*VolumeEcShardsDeleteRequest)(nil), "volume_server_pb.VolumeEcShardsDeleteRequest")
@ -1303,6 +1371,7 @@ type VolumeServerClient interface {
VolumeTailReceiver(ctx context.Context, in *VolumeTailReceiverRequest, opts ...grpc.CallOption) (*VolumeTailReceiverResponse, error)
// erasure coding
VolumeEcShardsGenerate(ctx context.Context, in *VolumeEcShardsGenerateRequest, opts ...grpc.CallOption) (*VolumeEcShardsGenerateResponse, error)
VolumeEcShardsRebuild(ctx context.Context, in *VolumeEcShardsRebuildRequest, opts ...grpc.CallOption) (*VolumeEcShardsRebuildResponse, error)
VolumeEcShardsCopy(ctx context.Context, in *VolumeEcShardsCopyRequest, opts ...grpc.CallOption) (*VolumeEcShardsCopyResponse, error)
VolumeEcShardsDelete(ctx context.Context, in *VolumeEcShardsDeleteRequest, opts ...grpc.CallOption) (*VolumeEcShardsDeleteResponse, error)
VolumeEcShardsMount(ctx context.Context, in *VolumeEcShardsMountRequest, opts ...grpc.CallOption) (*VolumeEcShardsMountResponse, error)
@ -1549,6 +1618,15 @@ func (c *volumeServerClient) VolumeEcShardsGenerate(ctx context.Context, in *Vol
return out, nil
}
func (c *volumeServerClient) VolumeEcShardsRebuild(ctx context.Context, in *VolumeEcShardsRebuildRequest, opts ...grpc.CallOption) (*VolumeEcShardsRebuildResponse, error) {
out := new(VolumeEcShardsRebuildResponse)
err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsRebuild", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *volumeServerClient) VolumeEcShardsCopy(ctx context.Context, in *VolumeEcShardsCopyRequest, opts ...grpc.CallOption) (*VolumeEcShardsCopyResponse, error) {
out := new(VolumeEcShardsCopyResponse)
err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsCopy", in, out, c.cc, opts...)
@ -1641,6 +1719,7 @@ type VolumeServerServer interface {
VolumeTailReceiver(context.Context, *VolumeTailReceiverRequest) (*VolumeTailReceiverResponse, error)
// erasure coding
VolumeEcShardsGenerate(context.Context, *VolumeEcShardsGenerateRequest) (*VolumeEcShardsGenerateResponse, error)
VolumeEcShardsRebuild(context.Context, *VolumeEcShardsRebuildRequest) (*VolumeEcShardsRebuildResponse, error)
VolumeEcShardsCopy(context.Context, *VolumeEcShardsCopyRequest) (*VolumeEcShardsCopyResponse, error)
VolumeEcShardsDelete(context.Context, *VolumeEcShardsDeleteRequest) (*VolumeEcShardsDeleteResponse, error)
VolumeEcShardsMount(context.Context, *VolumeEcShardsMountRequest) (*VolumeEcShardsMountResponse, error)
@ -1985,6 +2064,24 @@ func _VolumeServer_VolumeEcShardsGenerate_Handler(srv interface{}, ctx context.C
return interceptor(ctx, in, info, handler)
}
func _VolumeServer_VolumeEcShardsRebuild_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(VolumeEcShardsRebuildRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(VolumeServerServer).VolumeEcShardsRebuild(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsRebuild",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(VolumeServerServer).VolumeEcShardsRebuild(ctx, req.(*VolumeEcShardsRebuildRequest))
}
return interceptor(ctx, in, info, handler)
}
func _VolumeServer_VolumeEcShardsCopy_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(VolumeEcShardsCopyRequest)
if err := dec(in); err != nil {
@ -2142,6 +2239,10 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
MethodName: "VolumeEcShardsGenerate",
Handler: _VolumeServer_VolumeEcShardsGenerate_Handler,
},
{
MethodName: "VolumeEcShardsRebuild",
Handler: _VolumeServer_VolumeEcShardsRebuild_Handler,
},
{
MethodName: "VolumeEcShardsCopy",
Handler: _VolumeServer_VolumeEcShardsCopy_Handler,
@ -2187,113 +2288,118 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 1724 bytes of a gzipped FileDescriptorProto
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0x1c, 0x00, 0x00,
}

37
weed/server/volume_grpc_copy.go
View file

@ -53,11 +53,11 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
// println("source:", volFileInfoResp.String())
// copy ecx file
if err := vs.doCopyFile(ctx, client, req.VolumeId, volFileInfoResp.CompactionRevision, volFileInfoResp.IdxFileSize, volumeFileName, ".idx"); err != nil {
if err := vs.doCopyFile(ctx, client, false, req.Collection, req.VolumeId, volFileInfoResp.CompactionRevision, volFileInfoResp.IdxFileSize, volumeFileName, ".idx"); err != nil {
return err
}
if err := vs.doCopyFile(ctx, client, req.VolumeId, volFileInfoResp.CompactionRevision, volFileInfoResp.DatFileSize, volumeFileName, ".dat"); err != nil {
if err := vs.doCopyFile(ctx, client, false, req.Collection, req.VolumeId, volFileInfoResp.CompactionRevision, volFileInfoResp.DatFileSize, volumeFileName, ".dat"); err != nil {
return err
}
@ -92,7 +92,7 @@ func (vs *VolumeServer) VolumeCopy(ctx context.Context, req *volume_server_pb.Vo
}, err
}
func (vs *VolumeServer) doCopyFile(ctx context.Context, client volume_server_pb.VolumeServerClient, vid uint32,
func (vs *VolumeServer) doCopyFile(ctx context.Context, client volume_server_pb.VolumeServerClient, isEcVolume bool, collection string, vid uint32,
compactRevision uint32, stopOffset uint64, baseFileName, ext string) error {
copyFileClient, err := client.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
@ -100,6 +100,8 @@ func (vs *VolumeServer) doCopyFile(ctx context.Context, client volume_server_pb.
Ext: ext,
CompactionRevision: compactRevision,
StopOffset: stopOffset,
Collection: collection,
IsEcVolume: isEcVolume,
})
if err != nil {
return fmt.Errorf("failed to start copying volume %d %s file: %v", vid, ext, err)
@ -107,7 +109,7 @@ func (vs *VolumeServer) doCopyFile(ctx context.Context, client volume_server_pb.
err = writeToFile(copyFileClient, baseFileName+ext, util.NewWriteThrottler(vs.compactionBytePerSecond))
if err != nil {
return fmt.Errorf("failed to copy volume %d %s file: %v", vid, ext, err)
return fmt.Errorf("failed to copy %s file: %v", baseFileName+ext, err)
}
return nil
@ -185,18 +187,27 @@ func (vs *VolumeServer) ReadVolumeFileStatus(ctx context.Context, req *volume_se
// The copying still stop at req.StopOffset, but you can set it to math.MaxUint64 in order to read all data.
func (vs *VolumeServer) CopyFile(req *volume_server_pb.CopyFileRequest, stream volume_server_pb.VolumeServer_CopyFileServer) error {
v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
if v == nil {
return fmt.Errorf("not found volume id %d", req.VolumeId)
}
var fileName string
if !req.IsEcVolume {
v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
if v == nil {
return fmt.Errorf("not found volume id %d", req.VolumeId)
}
if uint32(v.CompactionRevision) != req.CompactionRevision && req.CompactionRevision != math.MaxUint32 {
return fmt.Errorf("volume %d is compacted", req.VolumeId)
if uint32(v.CompactionRevision) != req.CompactionRevision && req.CompactionRevision != math.MaxUint32 {
return fmt.Errorf("volume %d is compacted", req.VolumeId)
}
fileName = v.FileName() + req.Ext
} else {
ecv, found := vs.store.FindEcVolume(needle.VolumeId(req.VolumeId))
if !found {
return fmt.Errorf("not found ec volume id %d", req.VolumeId)
}
fileName = ecv.FileName() + req.Ext
}
bytesToRead := int64(req.StopOffset)
var fileName = v.FileName() + req.Ext
file, err := os.Open(fileName)
if err != nil {
return err
@ -235,3 +246,7 @@ func (vs *VolumeServer) CopyFile(req *volume_server_pb.CopyFileRequest, stream v
return nil
}
func (vs *VolumeServer) findVolumeOrEcVolumeLocation(volumeId needle.VolumeId) {
}

122
weed/server/volume_grpc_erasure_coding.go
View file

@ -4,8 +4,11 @@ import (
"context"
"fmt"
"io"
"io/ioutil"
"math"
"os"
"path"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
@ -13,6 +16,7 @@ import (
"github.com/chrislusf/seaweedfs/weed/storage"
"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/util"
)
/*
@ -54,6 +58,30 @@ func (vs *VolumeServer) VolumeEcShardsGenerate(ctx context.Context, req *volume_
return &volume_server_pb.VolumeEcShardsGenerateResponse{}, nil
}
// VolumeEcShardsRebuild generates the any of the missing .ec01 ~ .ec14 files
func (vs *VolumeServer) VolumeEcShardsRebuild(ctx context.Context, req *volume_server_pb.VolumeEcShardsRebuildRequest) (*volume_server_pb.VolumeEcShardsRebuildResponse, error) {
baseFileName := erasure_coding.EcShardBaseFileName(req.Collection, int(req.VolumeId))
var rebuiltShardIds []uint32
for _, location := range vs.store.Locations {
if util.FileExists(path.Join(location.Directory, baseFileName+".ecx")) {
// write .ec01 ~ .ec14 files
if generatedShardIds, err := erasure_coding.RebuildEcFiles(baseFileName); err != nil {
return nil, fmt.Errorf("RebuildEcFiles %s: %v", baseFileName, err)
} else {
rebuiltShardIds = generatedShardIds
}
break
}
}
return &volume_server_pb.VolumeEcShardsRebuildResponse{
RebuiltShardIds: rebuiltShardIds,
}, nil
}
// VolumeEcShardsCopy copy the .ecx and some ec data slices
func (vs *VolumeServer) VolumeEcShardsCopy(ctx context.Context, req *volume_server_pb.VolumeEcShardsCopyRequest) (*volume_server_pb.VolumeEcShardsCopyResponse, error) {
@ -62,22 +90,26 @@ func (vs *VolumeServer) VolumeEcShardsCopy(ctx context.Context, req *volume_serv
return nil, fmt.Errorf("no space left")
}
baseFileName := storage.VolumeFileName(req.Collection, location.Directory, int(req.VolumeId))
baseFileName := storage.VolumeFileName(location.Directory, req.Collection, int(req.VolumeId))
err := operation.WithVolumeServerClient(req.SourceDataNode, vs.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
// copy ecx file
if err := vs.doCopyFile(ctx, client, req.VolumeId, math.MaxUint32, math.MaxInt64, baseFileName, ".ecx"); err != nil {
return err
}
// copy ec data slices
for _, shardId := range req.ShardIds {
if err := vs.doCopyFile(ctx, client, req.VolumeId, math.MaxUint32, math.MaxInt64, baseFileName, erasure_coding.ToExt(int(shardId))); err != nil {
if err := vs.doCopyFile(ctx, client, true, req.Collection, req.VolumeId, math.MaxUint32, math.MaxInt64, baseFileName, erasure_coding.ToExt(int(shardId))); err != nil {
return err
}
}
if !req.CopyEcxFile {
return nil
}
// copy ecx file
if err := vs.doCopyFile(ctx, client, true, req.Collection, req.VolumeId, math.MaxUint32, math.MaxInt64, baseFileName, ".ecx"); err != nil {
return err
}
return nil
})
if err != nil {
@ -87,65 +119,43 @@ func (vs *VolumeServer) VolumeEcShardsCopy(ctx context.Context, req *volume_serv
return &volume_server_pb.VolumeEcShardsCopyResponse{}, nil
}
// VolumeEcShardsDelete local delete the .ecx and some ec data slices if not needed, assuming current server has the source volume
// VolumeEcShardsDelete local delete the .ecx and some ec data slices if not needed
// the shard should not be mounted before calling this.
func (vs *VolumeServer) VolumeEcShardsDelete(ctx context.Context, req *volume_server_pb.VolumeEcShardsDeleteRequest) (*volume_server_pb.VolumeEcShardsDeleteResponse, error) {
foundExistingVolume, err := vs.doDeleteUnmountedShards(ctx, req)
if err != nil {
return nil, err
}
if !foundExistingVolume {
err = vs.doDeleteMountedShards(ctx, req)
}
return &volume_server_pb.VolumeEcShardsDeleteResponse{}, err
}
// VolumeEcShardsDelete local delete the .ecx and some ec data slices if not needed, assuming current server has the source volume
func (vs *VolumeServer) doDeleteUnmountedShards(ctx context.Context, req *volume_server_pb.VolumeEcShardsDeleteRequest) (foundVolume bool, err error) {
v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
if v == nil {
return false, nil
}
baseFileName := v.FileName()
baseFilename := erasure_coding.EcShardBaseFileName(req.Collection, int(req.VolumeId))
for _, shardId := range req.ShardIds {
if err := os.Remove(baseFileName + erasure_coding.ToExt(int(shardId))); err != nil {
return true, err
os.Remove(baseFilename + erasure_coding.ToExt(int(shardId)))
}
// check whether to delete the ecx file also
hasEcxFile := false
existingShardCount := 0
for _, location := range vs.store.Locations {
fileInfos, err := ioutil.ReadDir(location.Directory)
if err != nil {
continue
}
for _, fileInfo := range fileInfos {
if fileInfo.Name() == baseFilename+".ecx" {
hasEcxFile = true
continue
}
if strings.HasPrefix(fileInfo.Name(), baseFilename+".ec") {
existingShardCount++
}
}
}
if req.ShouldDeleteEcx {
if err := os.Remove(baseFileName + ".ecx"); err != nil {
return true, err
if hasEcxFile && existingShardCount == 0 {
if err := os.Remove(baseFilename + ".ecx"); err != nil {
return nil, err
}
}
return true, nil
}
// VolumeEcShardsDelete local delete the .ecx and some ec data slices if not needed, assuming current server has the source volume
func (vs *VolumeServer) doDeleteMountedShards(ctx context.Context, req *volume_server_pb.VolumeEcShardsDeleteRequest) (error) {
ecv, found := vs.store.FindEcVolume(needle.VolumeId(req.VolumeId))
if !found {
return fmt.Errorf("volume %d not found", req.VolumeId)
}
for _, shardId := range req.ShardIds {
if shard, found := ecv.DeleteEcVolumeShard(erasure_coding.ShardId(shardId)); found {
shard.Destroy()
}
}
if len(ecv.Shards) == 0 {
vs.store.DestroyEcVolume(needle.VolumeId(req.VolumeId))
}
return nil
return &volume_server_pb.VolumeEcShardsDeleteResponse{}, nil
}
func (vs *VolumeServer) VolumeEcShardsMount(ctx context.Context, req *volume_server_pb.VolumeEcShardsMountRequest) (*volume_server_pb.VolumeEcShardsMountResponse, error) {

25
weed/shell/command_ec_balance.go
View file

@ -56,9 +56,9 @@ func (c *commandEcBalance) Help() string {
func (c *commandEcBalance) Do(args []string, commandEnv *commandEnv, writer io.Writer) (err error) {
balanceCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
collection := balanceCommand.String("c", "EACH_COLLECTION", "collection name, or \"EACH_COLLECTION\" for each collection")
collection := balanceCommand.String("collection", "EACH_COLLECTION", "collection name, or \"EACH_COLLECTION\" for each collection")
dc := balanceCommand.String("dataCenter", "", "only apply the balancing for this dataCenter")
applyBalancing := balanceCommand.Bool("f", false, "apply the balancing plan")
applyBalancing := balanceCommand.Bool("force", false, "apply the balancing plan")
if err = balanceCommand.Parse(args); err != nil {
return nil
}
@ -211,7 +211,7 @@ func pickOneEcNodeAndMoveOneShard(ctx context.Context, commandEnv *commandEnv, a
fmt.Printf("%s moves ec shard %d.%d to %s\n", existingLocation.info.Id, vid, shardId, destEcNode.info.Id)
err := moveOneShardToEcNode(ctx, commandEnv, existingLocation, collection, vid, shardId, destEcNode, applyBalancing)
err := moveMountedShardToEcNode(ctx, commandEnv, existingLocation, collection, vid, shardId, destEcNode, applyBalancing)
if err != nil {
return err
}
@ -223,25 +223,6 @@ func pickOneEcNodeAndMoveOneShard(ctx context.Context, commandEnv *commandEnv, a
return nil
}
func moveOneShardToEcNode(ctx context.Context, commandEnv *commandEnv, existingLocation *EcNode, collection string, vid needle.VolumeId, shardId erasure_coding.ShardId, destinationEcNode *EcNode, applyBalancing bool) error {
fmt.Printf("moved ec shard %d.%d %s => %s\n", vid, shardId, existingLocation.info.Id, destinationEcNode.info.Id)
if !applyBalancing {
return nil
}
// ask destination node to copy shard and the ecx file from source node, and mount it
copiedShardIds, err := oneServerCopyEcShardsFromSource(ctx, commandEnv.option.GrpcDialOption, destinationEcNode, uint32(shardId), 1, vid, collection, existingLocation.info.Id)
if err != nil {
return err
}
// ask source node to delete the shard, and maybe the ecx file
return sourceServerDeleteEcShards(ctx, commandEnv.option.GrpcDialOption, vid, existingLocation.info.Id, copiedShardIds)
}
func findEcVolumeShards(ecNode *EcNode, vid needle.VolumeId) erasure_coding.ShardBits {
for _, shardInfo := range ecNode.info.EcShardInfos {

198
weed/shell/command_ec_common.go Normal file
View file

@ -0,0 +1,198 @@
package shell
import (
"context"
"fmt"
"sort"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"google.golang.org/grpc"
)
func moveMountedShardToEcNode(ctx context.Context, commandEnv *commandEnv, existingLocation *EcNode, collection string, vid needle.VolumeId, shardId erasure_coding.ShardId, destinationEcNode *EcNode, applyBalancing bool) error {
fmt.Printf("moved ec shard %d.%d %s => %s\n", vid, shardId, existingLocation.info.Id, destinationEcNode.info.Id)
if !applyBalancing {
return nil
}
// ask destination node to copy shard and the ecx file from source node, and mount it
copiedShardIds, err := oneServerCopyAndMountEcShardsFromSource(ctx, commandEnv.option.GrpcDialOption, destinationEcNode, uint32(shardId), 1, vid, collection, existingLocation.info.Id)
if err != nil {
return err
}
// unmount the to be deleted shards
err = unmountEcShards(ctx, commandEnv.option.GrpcDialOption, vid, existingLocation.info.Id, copiedShardIds)
if err != nil {
return err
}
// ask source node to delete the shard, and maybe the ecx file
return sourceServerDeleteEcShards(ctx, commandEnv.option.GrpcDialOption, collection, vid, existingLocation.info.Id, copiedShardIds)
}
func oneServerCopyAndMountEcShardsFromSource(ctx context.Context, grpcDialOption grpc.DialOption,
targetServer *EcNode, startFromShardId uint32, shardCount int,
volumeId needle.VolumeId, collection string, existingLocation string) (copiedShardIds []uint32, err error) {
var shardIdsToCopy []uint32
for shardId := startFromShardId; shardId < startFromShardId+uint32(shardCount); shardId++ {
shardIdsToCopy = append(shardIdsToCopy, shardId)
}
fmt.Printf("allocate %d.%v %s => %s\n", volumeId, shardIdsToCopy, existingLocation, targetServer.info.Id)
err = operation.WithVolumeServerClient(targetServer.info.Id, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
if targetServer.info.Id != existingLocation {
fmt.Printf("copy %d.%v %s => %s\n", volumeId, shardIdsToCopy, existingLocation, targetServer.info.Id)
_, copyErr := volumeServerClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: shardIdsToCopy,
CopyEcxFile: true,
SourceDataNode: existingLocation,
})
if copyErr != nil {
return copyErr
}
}
fmt.Printf("mount %d.%v on %s\n", volumeId, shardIdsToCopy, targetServer.info.Id)
_, mountErr := volumeServerClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: shardIdsToCopy,
})
if mountErr != nil {
return mountErr
}
if targetServer.info.Id != existingLocation {
copiedShardIds = shardIdsToCopy
glog.V(0).Infof("%s ec volume %d deletes shards %+v", existingLocation, volumeId, copiedShardIds)
}
return nil
})
if err != nil {
return
}
return
}
func eachDataNode(topo *master_pb.TopologyInfo, fn func(*master_pb.DataNodeInfo)) {
for _, dc := range topo.DataCenterInfos {
for _, rack := range dc.RackInfos {
for _, dn := range rack.DataNodeInfos {
fn(dn)
}
}
}
}
func sortEcNodes(ecNodes []*EcNode) {
sort.Slice(ecNodes, func(i, j int) bool {
return ecNodes[i].freeEcSlot > ecNodes[j].freeEcSlot
})
}
func countShards(ecShardInfos []*master_pb.VolumeEcShardInformationMessage) (count int) {
for _, ecShardInfo := range ecShardInfos {
shardBits := erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
count += shardBits.ShardIdCount()
}
return
}
func countFreeShardSlots(dn *master_pb.DataNodeInfo) (count int) {
return int(dn.FreeVolumeCount)*10 - countShards(dn.EcShardInfos)
}
type EcNode struct {
info *master_pb.DataNodeInfo
freeEcSlot int
}
func collectEcNodes(ctx context.Context, commandEnv *commandEnv) (ecNodes []*EcNode, totalFreeEcSlots int, err error) {
// list all possible locations
var resp *master_pb.VolumeListResponse
err = commandEnv.masterClient.WithClient(ctx, func(client master_pb.SeaweedClient) error {
resp, err = client.VolumeList(ctx, &master_pb.VolumeListRequest{})
return err
})
if err != nil {
return nil, 0, err
}
// find out all volume servers with one slot left.
eachDataNode(resp.TopologyInfo, func(dn *master_pb.DataNodeInfo) {
if freeEcSlots := countFreeShardSlots(dn); freeEcSlots > 0 {
ecNodes = append(ecNodes, &EcNode{
info: dn,
freeEcSlot: int(freeEcSlots),
})
totalFreeEcSlots += freeEcSlots
}
})
sortEcNodes(ecNodes)
return
}
func sourceServerDeleteEcShards(ctx context.Context, grpcDialOption grpc.DialOption,
collection string, volumeId needle.VolumeId, sourceLocation string, toBeDeletedShardIds []uint32) error {
fmt.Printf("delete %d.%v from %s\n", volumeId, toBeDeletedShardIds, sourceLocation)
return operation.WithVolumeServerClient(sourceLocation, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, deleteErr := volumeServerClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: toBeDeletedShardIds,
})
return deleteErr
})
}
func unmountEcShards(ctx context.Context, grpcDialOption grpc.DialOption,
volumeId needle.VolumeId, sourceLocation string, toBeUnmountedhardIds []uint32) error {
fmt.Printf("unmount %d.%v from %s\n", volumeId, toBeUnmountedhardIds, sourceLocation)
return operation.WithVolumeServerClient(sourceLocation, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, deleteErr := volumeServerClient.VolumeEcShardsUnmount(ctx, &volume_server_pb.VolumeEcShardsUnmountRequest{
VolumeId: uint32(volumeId),
ShardIds: toBeUnmountedhardIds,
})
return deleteErr
})
}
func mountEcShards(ctx context.Context, grpcDialOption grpc.DialOption,
collection string, volumeId needle.VolumeId, sourceLocation string, toBeMountedhardIds []uint32) error {
fmt.Printf("mount %d.%v on %s\n", volumeId, toBeMountedhardIds, sourceLocation)
return operation.WithVolumeServerClient(sourceLocation, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, mountErr := volumeServerClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: toBeMountedhardIds,
})
return mountErr
})
}

161
weed/shell/command_ec_encode.go
View file

@ -5,11 +5,9 @@ import (
"flag"
"fmt"
"io"
"sort"
"sync"
"time"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
@ -73,6 +71,7 @@ func (c *commandEcEncode) Do(args []string, commandEnv *commandEnv, writer io.Wr
if err != nil {
return err
}
fmt.Printf("ec encode volumes: %v\n", volumeIds)
for _, vid := range volumeIds {
if err = doEcEncode(ctx, commandEnv, *collection, vid); err != nil {
return err
@ -96,9 +95,9 @@ func doEcEncode(ctx context.Context, commandEnv *commandEnv, collection string,
}
// balance the ec shards to current cluster
err = balanceEcShards(ctx, commandEnv, vid, collection, locations)
err = spreadEcShards(ctx, commandEnv, vid, collection, locations)
if err != nil {
return fmt.Errorf("balance ec shards for volume %d on %s: %v", vid, locations[0].Url, err)
return fmt.Errorf("spread ec shards for volume %d to %s: %v", vid, locations[0].Url, err)
}
return nil
@ -118,7 +117,7 @@ func generateEcShards(ctx context.Context, grpcDialOption grpc.DialOption, volum
}
func balanceEcShards(ctx context.Context, commandEnv *commandEnv, volumeId needle.VolumeId, collection string, existingLocations []wdclient.Location) (err error) {
func spreadEcShards(ctx context.Context, commandEnv *commandEnv, volumeId needle.VolumeId, collection string, existingLocations []wdclient.Location) (err error) {
allEcNodes, totalFreeEcSlots, err := collectEcNodes(ctx, commandEnv)
if err != nil {
@ -139,13 +138,19 @@ func balanceEcShards(ctx context.Context, commandEnv *commandEnv, volumeId needl
// ask the data nodes to copy from the source volume server
copiedShardIds, err := parallelCopyEcShardsFromSource(ctx, commandEnv.option.GrpcDialOption, allocatedDataNodes, allocated, volumeId, collection, existingLocations[0])
if err != nil {
return nil
return err
}
// unmount the to be deleted shards
err = unmountEcShards(ctx, commandEnv.option.GrpcDialOption, volumeId, existingLocations[0].Url, copiedShardIds)
if err != nil {
return err
}
// ask the source volume server to clean up copied ec shards
err = sourceServerDeleteEcShards(ctx, commandEnv.option.GrpcDialOption, volumeId, existingLocations[0].Url, copiedShardIds)
err = sourceServerDeleteEcShards(ctx, commandEnv.option.GrpcDialOption, collection, volumeId, existingLocations[0].Url, copiedShardIds)
if err != nil {
return fmt.Errorf("sourceServerDeleteEcShards %s %d.%v: %v", existingLocations[0], volumeId, copiedShardIds, err)
return fmt.Errorf("source delete copied ecShards %s %d.%v: %v", existingLocations[0].Url, volumeId, copiedShardIds, err)
}
// ask the source volume server to delete the original volume
@ -176,7 +181,7 @@ func parallelCopyEcShardsFromSource(ctx context.Context, grpcDialOption grpc.Dia
wg.Add(1)
go func(server *EcNode, startFromShardId uint32, shardCount int) {
defer wg.Done()
copiedShardIds, copyErr := oneServerCopyEcShardsFromSource(ctx, grpcDialOption, server,
copiedShardIds, copyErr := oneServerCopyAndMountEcShardsFromSource(ctx, grpcDialOption, server,
startFromShardId, shardCount, volumeId, collection, existingLocation.Url)
if copyErr != nil {
err = copyErr
@ -201,81 +206,12 @@ func parallelCopyEcShardsFromSource(ctx context.Context, grpcDialOption grpc.Dia
return
}
func oneServerCopyEcShardsFromSource(ctx context.Context, grpcDialOption grpc.DialOption,
targetServer *EcNode, startFromShardId uint32, shardCount int,
volumeId needle.VolumeId, collection string, existingLocation string) (copiedShardIds []uint32, err error) {
var shardIdsToCopy []uint32
for shardId := startFromShardId; shardId < startFromShardId+uint32(shardCount); shardId++ {
fmt.Printf("allocate %d.%d %s => %s\n", volumeId, shardId, existingLocation, targetServer.info.Id)
shardIdsToCopy = append(shardIdsToCopy, shardId)
}
err = operation.WithVolumeServerClient(targetServer.info.Id, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
if targetServer.info.Id != existingLocation {
_, copyErr := volumeServerClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: shardIdsToCopy,
SourceDataNode: existingLocation,
})
if copyErr != nil {
return copyErr
}
}
_, mountErr := volumeServerClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: shardIdsToCopy,
})
if mountErr != nil {
return mountErr
}
if targetServer.info.Id != existingLocation {
copiedShardIds = shardIdsToCopy
glog.V(0).Infof("%s ec volume %d deletes shards %+v", existingLocation, volumeId, copiedShardIds)
}
return nil
})
if err != nil {
return
}
return
}
func sourceServerDeleteEcShards(ctx context.Context, grpcDialOption grpc.DialOption,
volumeId needle.VolumeId, sourceLocation string, toBeDeletedShardIds []uint32) error {
shouldDeleteEcx := len(toBeDeletedShardIds) == erasure_coding.TotalShardsCount
return operation.WithVolumeServerClient(sourceLocation, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, deleteErr := volumeServerClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
VolumeId: uint32(volumeId),
ShardIds: toBeDeletedShardIds,
ShouldDeleteEcx: shouldDeleteEcx,
})
return deleteErr
})
}
func balancedEcDistribution(servers []*EcNode) (allocated []int) {
freeSlots := make([]int, len(servers))
allocated = make([]int, len(servers))
for i, server := range servers {
freeSlots[i] = countFreeShardSlots(server.info)
}
allocatedCount := 0
for allocatedCount < erasure_coding.TotalShardsCount {
for i, _ := range servers {
if freeSlots[i]-allocated[i] > 0 {
for i, server := range servers {
if server.freeEcSlot-allocated[i] > 0 {
allocated[i] += 1
allocatedCount += 1
}
@ -288,67 +224,6 @@ func balancedEcDistribution(servers []*EcNode) (allocated []int) {
return allocated
}
func eachDataNode(topo *master_pb.TopologyInfo, fn func(*master_pb.DataNodeInfo)) {
for _, dc := range topo.DataCenterInfos {
for _, rack := range dc.RackInfos {
for _, dn := range rack.DataNodeInfos {
fn(dn)
}
}
}
}
func countShards(ecShardInfos []*master_pb.VolumeEcShardInformationMessage) (count int) {
for _, ecShardInfo := range ecShardInfos {
shardBits := erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
count += shardBits.ShardIdCount()
}
return
}
func countFreeShardSlots(dn *master_pb.DataNodeInfo) (count int) {
return int(dn.FreeVolumeCount)*10 - countShards(dn.EcShardInfos)
}
type EcNode struct {
info *master_pb.DataNodeInfo
freeEcSlot int
}
func sortEcNodes(ecNodes []*EcNode) {
sort.Slice(ecNodes, func(i, j int) bool {
return ecNodes[i].freeEcSlot > ecNodes[j].freeEcSlot
})
}
func collectEcNodes(ctx context.Context, commandEnv *commandEnv) (ecNodes []*EcNode, totalFreeEcSlots int, err error) {
// list all possible locations
var resp *master_pb.VolumeListResponse
err = commandEnv.masterClient.WithClient(ctx, func(client master_pb.SeaweedClient) error {
resp, err = client.VolumeList(ctx, &master_pb.VolumeListRequest{})
return err
})
if err != nil {
return nil, 0, err
}
// find out all volume servers with one slot left.
eachDataNode(resp.TopologyInfo, func(dn *master_pb.DataNodeInfo) {
if freeEcSlots := countFreeShardSlots(dn); freeEcSlots > 0 {
ecNodes = append(ecNodes, &EcNode{
info: dn,
freeEcSlot: int(freeEcSlots),
})
totalFreeEcSlots += freeEcSlots
}
})
sortEcNodes(ecNodes)
return
}
func collectVolumeIdsForEcEncode(ctx context.Context, commandEnv *commandEnv, selectedCollection string, quietPeriod time.Duration) (vids []needle.VolumeId, err error) {
var resp *master_pb.VolumeListResponse
@ -360,9 +235,11 @@ func collectVolumeIdsForEcEncode(ctx context.Context, commandEnv *commandEnv, se
return
}
quietSeconds := int64((quietPeriod * time.Second).Seconds())
quietSeconds := int64(quietPeriod / time.Second)
nowUnixSeconds := time.Now().Unix()
fmt.Printf("ec encode volumes quiet for: %d seconds\n", quietSeconds)
vidMap := make(map[uint32]bool)
for _, dc := range resp.TopologyInfo.DataCenterInfos {
for _, r := range dc.RackInfos {

272
weed/shell/command_ec_rebuild.go Normal file
View file

@ -0,0 +1,272 @@
package shell
import (
"context"
"flag"
"fmt"
"io"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"google.golang.org/grpc"
)
func init() {
commands = append(commands, &commandEcRebuild{})
}
type commandEcRebuild struct {
}
func (c *commandEcRebuild) Name() string {
return "ec.rebuild"
}
func (c *commandEcRebuild) Help() string {
return `find and rebuild missing ec shards among volume servers
ec.rebuild [-c EACH_COLLECTION|<collection_name>] [-f]
Algorithm:
For each type of volume server (different max volume count limit){
for each collection {
rebuildEcVolumes()
}
}
func rebuildEcVolumes(){
idealWritableVolumes = totalWritableVolumes / numVolumeServers
for {
sort all volume servers ordered by the number of local writable volumes
pick the volume server A with the lowest number of writable volumes x
pick the volume server B with the highest number of writable volumes y
if y > idealWritableVolumes and x +1 <= idealWritableVolumes {
if B has a writable volume id v that A does not have {
move writable volume v from A to B
}
}
}
}
`
}
func (c *commandEcRebuild) Do(args []string, commandEnv *commandEnv, writer io.Writer) (err error) {
fixCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
collection := fixCommand.String("collection", "EACH_COLLECTION", "collection name, or \"EACH_COLLECTION\" for each collection")
applyChanges := fixCommand.Bool("force", false, "apply the changes")
if err = fixCommand.Parse(args); err != nil {
return nil
}
// collect all ec nodes
allEcNodes, _, err := collectEcNodes(context.Background(), commandEnv)
if err != nil {
return err
}
if *collection == "EACH_COLLECTION" {
collections, err := ListCollectionNames(commandEnv, false, true)
if err != nil {
return err
}
fmt.Printf("rebuildEcVolumes collections %+v\n", len(collections))
for _, c := range collections {
fmt.Printf("rebuildEcVolumes collection %+v\n", c)
if err = rebuildEcVolumes(commandEnv, allEcNodes, c, writer, *applyChanges); err != nil {
return err
}
}
} else {
if err = rebuildEcVolumes(commandEnv, allEcNodes, *collection, writer, *applyChanges); err != nil {
return err
}
}
return nil
}
func rebuildEcVolumes(commandEnv *commandEnv, allEcNodes []*EcNode, collection string, writer io.Writer, applyChanges bool) error {
ctx := context.Background()
fmt.Printf("rebuildEcVolumes %s\n", collection)
// collect vid => each shard locations, similar to ecShardMap in topology.go
ecShardMap := make(EcShardMap)
for _, ecNode := range allEcNodes {
ecShardMap.registerEcNode(ecNode, collection)
}
for vid, locations := range ecShardMap {
shardCount := locations.shardCount()
if shardCount == erasure_coding.TotalShardsCount {
continue
}
if shardCount < erasure_coding.DataShardsCount {
return fmt.Errorf("ec volume %d is unrepairable with %d shards\n", vid, shardCount)
}
sortEcNodes(allEcNodes)
if allEcNodes[0].freeEcSlot < erasure_coding.TotalShardsCount {
return fmt.Errorf("disk space is not enough")
}
if err := rebuildOneEcVolume(ctx, commandEnv, allEcNodes[0], collection, vid, locations, writer, applyChanges); err != nil {
return err
}
}
return nil
}
func rebuildOneEcVolume(ctx context.Context, commandEnv *commandEnv, rebuilder *EcNode, collection string, volumeId needle.VolumeId, locations EcShardLocations, writer io.Writer, applyChanges bool) error {
fmt.Printf("rebuildOneEcVolume %s %d\n", collection, volumeId)
// collect shard files to rebuilder local disk
var generatedShardIds []uint32
copiedShardIds, _, err := prepareDataToRecover(ctx, commandEnv, rebuilder, collection, volumeId, locations, writer, applyChanges)
if err != nil {
return err
}
defer func() {
// clean up working files
// ask the rebuilder to delete the copied shards
err = sourceServerDeleteEcShards(ctx, commandEnv.option.GrpcDialOption, collection, volumeId, rebuilder.info.Id, copiedShardIds)
if err != nil {
fmt.Fprintf(writer, "%s delete copied ec shards %s %d.%v\n", rebuilder.info.Id, collection, volumeId, copiedShardIds)
}
// ask the rebuilder to delete the copied shards
err = sourceServerDeleteEcShards(ctx, commandEnv.option.GrpcDialOption, collection, volumeId, rebuilder.info.Id, generatedShardIds)
if err != nil {
fmt.Fprintf(writer, "%s delete generated ec shards %s %d.%v\n", rebuilder.info.Id, collection, volumeId, generatedShardIds)
}
}()
if !applyChanges {
return nil
}
// generate ec shards, and maybe ecx file, and mount them
generatedShardIds, err = generateMissingShards(ctx, commandEnv.option.GrpcDialOption, collection, volumeId, rebuilder.info.Id)
if err != nil {
return err
}
// mount the generated shards
err = mountEcShards(ctx, commandEnv.option.GrpcDialOption, collection, volumeId, rebuilder.info.Id, generatedShardIds)
if err != nil {
return err
}
return nil
}
func generateMissingShards(ctx context.Context, grpcDialOption grpc.DialOption,
collection string, volumeId needle.VolumeId, sourceLocation string) (rebuiltShardIds []uint32, err error) {
err = operation.WithVolumeServerClient(sourceLocation, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
resp, rebultErr := volumeServerClient.VolumeEcShardsRebuild(ctx, &volume_server_pb.VolumeEcShardsRebuildRequest{
VolumeId: uint32(volumeId),
Collection: collection,
})
if rebultErr == nil {
rebuiltShardIds = resp.RebuiltShardIds
}
return rebultErr
})
return
}
func prepareDataToRecover(ctx context.Context, commandEnv *commandEnv, rebuilder *EcNode, collection string, volumeId needle.VolumeId, locations EcShardLocations, writer io.Writer, applyBalancing bool) (copiedShardIds []uint32, localShardIds []uint32, err error) {
needEcxFile := true
var localShardBits erasure_coding.ShardBits
for _, ecShardInfo := range rebuilder.info.EcShardInfos {
if ecShardInfo.Collection == collection && needle.VolumeId(ecShardInfo.Id) == volumeId {
needEcxFile = false
localShardBits = erasure_coding.ShardBits(ecShardInfo.EcIndexBits)
}
}
for shardId, ecNodes := range locations {
if len(ecNodes) == 0 {
fmt.Fprintf(writer, "missing shard %d.%d\n", volumeId, shardId)
continue
}
if localShardBits.HasShardId(erasure_coding.ShardId(shardId)){
localShardIds = append(localShardIds, uint32(shardId))
fmt.Fprintf(writer, "use existing shard %d.%d\n", volumeId, shardId)
continue
}
var copyErr error
if applyBalancing{
copyErr = operation.WithVolumeServerClient(rebuilder.info.Id, commandEnv.option.GrpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, copyErr := volumeServerClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
VolumeId: uint32(volumeId),
Collection: collection,
ShardIds: []uint32{uint32(shardId)},
CopyEcxFile: needEcxFile,
SourceDataNode: ecNodes[0].info.Id,
})
return copyErr
})
if copyErr == nil && needEcxFile {
needEcxFile = false
}
}
if copyErr != nil {
fmt.Fprintf(writer, "%s failed to copy %d.%d from %s: %v\n", rebuilder.info.Id, volumeId, shardId, ecNodes[0].info.Id, copyErr)
} else {
fmt.Fprintf(writer, "%s copied %d.%d from %s\n", rebuilder.info.Id, volumeId, shardId, ecNodes[0].info.Id)
copiedShardIds = append(copiedShardIds, uint32(shardId))
}
}
if len(copiedShardIds)+len(localShardIds) >= erasure_coding.DataShardsCount {
return copiedShardIds, localShardIds, nil
}
return nil, nil, fmt.Errorf("%d shards are not enough to recover volume %d", len(copiedShardIds)+len(localShardIds), volumeId)
}
type EcShardMap map[needle.VolumeId]EcShardLocations
type EcShardLocations [][]*EcNode
func (ecShardMap EcShardMap) registerEcNode(ecNode *EcNode, collection string) {
for _, shardInfo := range ecNode.info.EcShardInfos {
if shardInfo.Collection == collection {
existing, found := ecShardMap[needle.VolumeId(shardInfo.Id)]
if !found {
existing = make([][]*EcNode, erasure_coding.TotalShardsCount)
ecShardMap[needle.VolumeId(shardInfo.Id)] = existing
}
for _, shardId := range erasure_coding.ShardBits(shardInfo.EcIndexBits).ShardIds() {
existing[shardId] = append(existing[shardId], ecNode)
}
}
}
}
func (ecShardLocations EcShardLocations) shardCount() (count int) {
for _, locations := range ecShardLocations {
if len(locations) > 0 {
count++
}
}
return
}

4
weed/shell/command_volume_balance.go
View file

@ -62,9 +62,9 @@ func (c *commandVolumeBalance) Help() string {
func (c *commandVolumeBalance) Do(args []string, commandEnv *commandEnv, writer io.Writer) (err error) {
balanceCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
collection := balanceCommand.String("c", "EACH_COLLECTION", "collection name, or use \"ALL_COLLECTIONS\" across collections, \"EACH_COLLECTION\" for each collection")
collection := balanceCommand.String("collection", "EACH_COLLECTION", "collection name, or use \"ALL_COLLECTIONS\" across collections, \"EACH_COLLECTION\" for each collection")
dc := balanceCommand.String("dataCenter", "", "only apply the balancing for this dataCenter")
applyBalancing := balanceCommand.Bool("f", false, "apply the balancing plan.")
applyBalancing := balanceCommand.Bool("force", false, "apply the balancing plan.")
if err = balanceCommand.Parse(args); err != nil {
return nil
}

2
weed/storage/disk_location_ec.go
View file

@ -61,6 +61,7 @@ func (l *DiskLocation) LoadEcShard(collection string, vid needle.VolumeId, shard
return fmt.Errorf("failed to create ec shard %d.%d: %v", vid, shardId, err)
}
l.ecVolumesLock.Lock()
defer l.ecVolumesLock.Unlock()
ecVolume, found := l.ecVolumes[vid]
if !found {
ecVolume, err = erasure_coding.NewEcVolume(l.Directory, collection, vid)
@ -70,7 +71,6 @@ func (l *DiskLocation) LoadEcShard(collection string, vid needle.VolumeId, shard
l.ecVolumes[vid] = ecVolume
}
ecVolume.AddEcVolumeShard(ecVolumeShard)
l.ecVolumesLock.Unlock()
return nil
}

105
weed/storage/erasure_coding/ec_encoder.go
View file

@ -9,6 +9,7 @@ import (
"github.com/chrislusf/seaweedfs/weed/storage/idx"
"github.com/chrislusf/seaweedfs/weed/storage/needle_map"
"github.com/chrislusf/seaweedfs/weed/storage/types"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/klauspost/reedsolomon"
)
@ -53,6 +54,10 @@ func WriteEcFiles(baseFileName string) error {
return generateEcFiles(baseFileName, 256*1024, ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize)
}
func RebuildEcFiles(baseFileName string) ([]uint32, error) {
return generateMissingEcFiles(baseFileName, 256*1024, ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize)
}
func ToExt(ecIndex int) string {
return fmt.Sprintf(".ec%02d", ecIndex)
}
@ -75,6 +80,37 @@ func generateEcFiles(baseFileName string, bufferSize int, largeBlockSize int64,
return nil
}
func generateMissingEcFiles(baseFileName string, bufferSize int, largeBlockSize int64, smallBlockSize int64) (generatedShardIds []uint32, err error) {
shardHasData := make([]bool, TotalShardsCount)
inputFiles := make([]*os.File, TotalShardsCount)
outputFiles := make([]*os.File, TotalShardsCount)
for shardId := 0; shardId < TotalShardsCount; shardId++ {
shardFileName := baseFileName + ToExt(shardId)
if util.FileExists(shardFileName) {
shardHasData[shardId] = true
inputFiles[shardId], err = os.OpenFile(shardFileName, os.O_RDONLY, 0)
if err != nil {
return nil, err
}
defer inputFiles[shardId].Close()
} else {
outputFiles[shardId], err = os.OpenFile(shardFileName, os.O_TRUNC|os.O_WRONLY|os.O_CREATE, 0644)
if err != nil {
return nil, err
}
defer outputFiles[shardId].Close()
generatedShardIds = append(generatedShardIds, uint32(shardId))
}
}
err = rebuildEcFiles(shardHasData, inputFiles, outputFiles)
if err != nil {
return nil, fmt.Errorf("rebuildEcFiles: %v", err)
}
return
}
func encodeData(file *os.File, enc reedsolomon.Encoder, startOffset, blockSize int64, buffers [][]byte, outputs []*os.File) error {
bufferSize := int64(len(buffers[0]))
@ -150,20 +186,25 @@ func encodeDataOneBatch(file *os.File, enc reedsolomon.Encoder, startOffset, blo
}
func encodeDatFile(remainingSize int64, err error, baseFileName string, bufferSize int, largeBlockSize int64, file *os.File, smallBlockSize int64) error {
var processedSize int64
enc, err := reedsolomon.New(DataShardsCount, ParityShardsCount)
if err != nil {
return fmt.Errorf("failed to create encoder: %v", err)
}
buffers := make([][]byte, TotalShardsCount)
for i, _ := range buffers {
buffers[i] = make([]byte, bufferSize)
}
outputs, err := openEcFiles(baseFileName, false)
defer closeEcFiles(outputs)
if err != nil {
return fmt.Errorf("failed to open dat file: %v", err)
}
for i, _ := range buffers {
buffers[i] = make([]byte, bufferSize)
}
for remainingSize > largeBlockSize*DataShardsCount {
err = encodeData(file, enc, processedSize, largeBlockSize, buffers, outputs)
if err != nil {
@ -183,6 +224,64 @@ func encodeDatFile(remainingSize int64, err error, baseFileName string, bufferSi
return nil
}
func rebuildEcFiles(shardHasData []bool, inputFiles []*os.File, outputFiles []*os.File) error {
enc, err := reedsolomon.New(DataShardsCount, ParityShardsCount)
if err != nil {
return fmt.Errorf("failed to create encoder: %v", err)
}
buffers := make([][]byte, TotalShardsCount)
for i, _ := range buffers {
if shardHasData[i] {
buffers[i] = make([]byte, ErasureCodingSmallBlockSize)
}
}
var startOffset int64
var inputBufferDataSize int
for {
// read the input data from files
for i := 0; i < TotalShardsCount; i++ {
if shardHasData[i] {
n, _ := inputFiles[i].ReadAt(buffers[i], startOffset)
if n == 0 {
return nil
}
if inputBufferDataSize != 0 {
inputBufferDataSize = n
}
if inputBufferDataSize != n {
return fmt.Errorf("ec shard size need to be the same")
}
} else {
buffers[i] = nil
}
}
fmt.Printf("reconstructing [%d,%d)\n", startOffset, startOffset+int64(inputBufferDataSize))
// encode the data
err = enc.Reconstruct(buffers)
if err != nil {
return fmt.Errorf("reconstruct: %v", err)
}
// write the data to output files
for i := 0; i < TotalShardsCount; i++ {
if !shardHasData[i] {
n, _ := outputFiles[i].WriteAt(buffers[i][:inputBufferDataSize], startOffset)
if inputBufferDataSize != n {
return fmt.Errorf("fail to write to %s", outputFiles[i].Name())
}
}
}
startOffset += int64(inputBufferDataSize)
}
}
func readCompactMap(baseFileName string) (*needle_map.CompactMap, error) {
indexFile, err := os.OpenFile(baseFileName+".idx", os.O_RDONLY, 0644)
if err != nil {

8
weed/storage/erasure_coding/ec_shard.go
View file

@ -57,6 +57,14 @@ func EcShardFileName(collection string, dir string, id int) (fileName string) {
return
}
func EcShardBaseFileName(collection string, id int) (baseFileName string) {
baseFileName = strconv.Itoa(id)
if collection != "" {
baseFileName = collection+"_"+baseFileName
}
return
}
func (shard *EcVolumeShard) Close() {
if shard.ecdFile != nil {
_ = shard.ecdFile.Close()

2
weed/storage/store_ec.go
View file

@ -45,6 +45,8 @@ func (s *Store) MountEcShards(collection string, vid needle.VolumeId, shardId er
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
}
return nil
} else {
return fmt.Errorf("%s load ec shard %d.%d: %v", location.Directory, vid, shardId, err)
}
}

4
weed/storage/volume.go
View file

@ -47,7 +47,7 @@ func (v *Volume) String() string {
return fmt.Sprintf("Id:%v, dir:%s, Collection:%s, dataFile:%v, nm:%v, readOnly:%v", v.Id, v.dir, v.Collection, v.dataFile, v.nm, v.readOnly)
}
func VolumeFileName(collection string, dir string, id int) (fileName string) {
func VolumeFileName(dir string, collection string, id int) (fileName string) {
idString := strconv.Itoa(id)
if collection == "" {
fileName = path.Join(dir, idString)
@ -57,7 +57,7 @@ func VolumeFileName(collection string, dir string, id int) (fileName string) {
return
}
func (v *Volume) FileName() (fileName string) {
return VolumeFileName(v.Collection, v.dir, int(v.Id))
return VolumeFileName(v.dir, v.Collection, int(v.Id))
}
func (v *Volume) DataFile() *os.File {
return v.dataFile

10
weed/util/file_util.go
View file

@ -30,3 +30,13 @@ func GetFileSize(file *os.File) (size int64, err error) {
}
return
}
func FileExists(filename string) bool {
_, err := os.Stat(filename)
if os.IsNotExist(err) {
return false
}
return true
}