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mount/unmount ec shards

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This commit is contained in:
Chris Lu 2019-05-25 23:23:19 -07:00
parent 41e8ae61f8
commit db94a41f9e
8 changed files with 471 additions and 134 deletions
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19
weed/pb/volume_server.proto
View file

@ -54,6 +54,10 @@ service VolumeServer {
}
rpc VolumeEcShardsDelete (VolumeEcShardsDeleteRequest) returns (VolumeEcShardsDeleteResponse) {
}
rpc VolumeEcShardsMount (VolumeEcShardsMountRequest) returns (VolumeEcShardsMountResponse) {
}
rpc VolumeEcShardsUnmount (VolumeEcShardsUnmountRequest) returns (VolumeEcShardsUnmountResponse) {
}
}
@ -223,6 +227,21 @@ message VolumeEcShardsDeleteRequest {
message VolumeEcShardsDeleteResponse {
}
message VolumeEcShardsMountRequest {
uint32 volume_id = 1;
string collection = 2;
repeated uint32 ec_indexes = 3;
}
message VolumeEcShardsMountResponse {
}
message VolumeEcShardsUnmountRequest {
uint32 volume_id = 1;
repeated uint32 ec_indexes = 3;
}
message VolumeEcShardsUnmountResponse {
}
message ReadVolumeFileStatusRequest {
uint32 volume_id = 1;
}

360
weed/pb/volume_server_pb/volume_server.pb.go
View file

@ -49,6 +49,10 @@ It has these top-level messages:
VolumeEcShardsCopyResponse
VolumeEcShardsDeleteRequest
VolumeEcShardsDeleteResponse
VolumeEcShardsMountRequest
VolumeEcShardsMountResponse
VolumeEcShardsUnmountRequest
VolumeEcShardsUnmountResponse
ReadVolumeFileStatusRequest
ReadVolumeFileStatusResponse
DiskStatus
@ -892,6 +896,78 @@ func (m *VolumeEcShardsDeleteResponse) String() string { return proto
func (*VolumeEcShardsDeleteResponse) ProtoMessage() {}
func (*VolumeEcShardsDeleteResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{39} }
type VolumeEcShardsMountRequest 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"`
EcIndexes []uint32 `protobuf:"varint,3,rep,packed,name=ec_indexes,json=ecIndexes" json:"ec_indexes,omitempty"`
}
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 (m *VolumeEcShardsMountRequest) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
func (m *VolumeEcShardsMountRequest) GetCollection() string {
if m != nil {
return m.Collection
}
return ""
}
func (m *VolumeEcShardsMountRequest) GetEcIndexes() []uint32 {
if m != nil {
return m.EcIndexes
}
return nil
}
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} }
type VolumeEcShardsUnmountRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
EcIndexes []uint32 `protobuf:"varint,3,rep,packed,name=ec_indexes,json=ecIndexes" json:"ec_indexes,omitempty"`
}
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 (m *VolumeEcShardsUnmountRequest) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
func (m *VolumeEcShardsUnmountRequest) GetEcIndexes() []uint32 {
if m != nil {
return m.EcIndexes
}
return nil
}
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} }
type ReadVolumeFileStatusRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
}
@ -899,7 +975,7 @@ 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{40} }
func (*ReadVolumeFileStatusRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{44} }
func (m *ReadVolumeFileStatusRequest) GetVolumeId() uint32 {
if m != nil {
@ -922,7 +998,7 @@ 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{41} }
func (*ReadVolumeFileStatusResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{45} }
func (m *ReadVolumeFileStatusResponse) GetVolumeId() uint32 {
if m != nil {
@ -990,7 +1066,7 @@ 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{42} }
func (*DiskStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{46} }
func (m *DiskStatus) GetDir() string {
if m != nil {
@ -1033,7 +1109,7 @@ 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{43} }
func (*MemStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{47} }
func (m *MemStatus) GetGoroutines() int32 {
if m != nil {
@ -1125,6 +1201,10 @@ func init() {
proto.RegisterType((*VolumeEcShardsCopyResponse)(nil), "volume_server_pb.VolumeEcShardsCopyResponse")
proto.RegisterType((*VolumeEcShardsDeleteRequest)(nil), "volume_server_pb.VolumeEcShardsDeleteRequest")
proto.RegisterType((*VolumeEcShardsDeleteResponse)(nil), "volume_server_pb.VolumeEcShardsDeleteResponse")
proto.RegisterType((*VolumeEcShardsMountRequest)(nil), "volume_server_pb.VolumeEcShardsMountRequest")
proto.RegisterType((*VolumeEcShardsMountResponse)(nil), "volume_server_pb.VolumeEcShardsMountResponse")
proto.RegisterType((*VolumeEcShardsUnmountRequest)(nil), "volume_server_pb.VolumeEcShardsUnmountRequest")
proto.RegisterType((*VolumeEcShardsUnmountResponse)(nil), "volume_server_pb.VolumeEcShardsUnmountResponse")
proto.RegisterType((*ReadVolumeFileStatusRequest)(nil), "volume_server_pb.ReadVolumeFileStatusRequest")
proto.RegisterType((*ReadVolumeFileStatusResponse)(nil), "volume_server_pb.ReadVolumeFileStatusResponse")
proto.RegisterType((*DiskStatus)(nil), "volume_server_pb.DiskStatus")
@ -1165,6 +1245,8 @@ type VolumeServerClient interface {
VolumeEcShardsGenerate(ctx context.Context, in *VolumeEcShardsGenerateRequest, opts ...grpc.CallOption) (*VolumeEcShardsGenerateResponse, 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)
VolumeEcShardsUnmount(ctx context.Context, in *VolumeEcShardsUnmountRequest, opts ...grpc.CallOption) (*VolumeEcShardsUnmountResponse, error)
}
type volumeServerClient struct {
@ -1424,6 +1506,24 @@ func (c *volumeServerClient) VolumeEcShardsDelete(ctx context.Context, in *Volum
return out, nil
}
func (c *volumeServerClient) VolumeEcShardsMount(ctx context.Context, in *VolumeEcShardsMountRequest, opts ...grpc.CallOption) (*VolumeEcShardsMountResponse, error) {
out := new(VolumeEcShardsMountResponse)
err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsMount", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *volumeServerClient) VolumeEcShardsUnmount(ctx context.Context, in *VolumeEcShardsUnmountRequest, opts ...grpc.CallOption) (*VolumeEcShardsUnmountResponse, error) {
out := new(VolumeEcShardsUnmountResponse)
err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsUnmount", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for VolumeServer service
type VolumeServerServer interface {
@ -1450,6 +1550,8 @@ type VolumeServerServer interface {
VolumeEcShardsGenerate(context.Context, *VolumeEcShardsGenerateRequest) (*VolumeEcShardsGenerateResponse, error)
VolumeEcShardsCopy(context.Context, *VolumeEcShardsCopyRequest) (*VolumeEcShardsCopyResponse, error)
VolumeEcShardsDelete(context.Context, *VolumeEcShardsDeleteRequest) (*VolumeEcShardsDeleteResponse, error)
VolumeEcShardsMount(context.Context, *VolumeEcShardsMountRequest) (*VolumeEcShardsMountResponse, error)
VolumeEcShardsUnmount(context.Context, *VolumeEcShardsUnmountRequest) (*VolumeEcShardsUnmountResponse, error)
}
func RegisterVolumeServerServer(s *grpc.Server, srv VolumeServerServer) {
@ -1825,6 +1927,42 @@ func _VolumeServer_VolumeEcShardsDelete_Handler(srv interface{}, ctx context.Con
return interceptor(ctx, in, info, handler)
}
func _VolumeServer_VolumeEcShardsMount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(VolumeEcShardsMountRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(VolumeServerServer).VolumeEcShardsMount(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsMount",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(VolumeServerServer).VolumeEcShardsMount(ctx, req.(*VolumeEcShardsMountRequest))
}
return interceptor(ctx, in, info, handler)
}
func _VolumeServer_VolumeEcShardsUnmount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(VolumeEcShardsUnmountRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(VolumeServerServer).VolumeEcShardsUnmount(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsUnmount",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(VolumeServerServer).VolumeEcShardsUnmount(ctx, req.(*VolumeEcShardsUnmountRequest))
}
return interceptor(ctx, in, info, handler)
}
var _VolumeServer_serviceDesc = grpc.ServiceDesc{
ServiceName: "volume_server_pb.VolumeServer",
HandlerType: (*VolumeServerServer)(nil),
@ -1897,6 +2035,14 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
MethodName: "VolumeEcShardsDelete",
Handler: _VolumeServer_VolumeEcShardsDelete_Handler,
},
{
MethodName: "VolumeEcShardsMount",
Handler: _VolumeServer_VolumeEcShardsMount_Handler,
},
{
MethodName: "VolumeEcShardsUnmount",
Handler: _VolumeServer_VolumeEcShardsUnmount_Handler,
},
},
Streams: []grpc.StreamDesc{
{
@ -1921,105 +2067,109 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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0x60, 0x85, 0x8e, 0x7b, 0x19, 0x00, 0x00,
}

39
weed/server/volume_grpc_erasure_coding.go
View file

@ -6,6 +6,7 @@ import (
"math"
"os"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage"
@ -108,3 +109,41 @@ func (vs *VolumeServer) VolumeEcShardsDelete(ctx context.Context, req *volume_se
return &volume_server_pb.VolumeEcShardsDeleteResponse{}, nil
}
func (vs *VolumeServer) VolumeEcShardsMount(ctx context.Context, req *volume_server_pb.VolumeEcShardsMountRequest) (*volume_server_pb.VolumeEcShardsMountResponse, error) {
for _, shardId := range req.EcIndexes {
err := vs.store.MountEcShards(req.Collection, needle.VolumeId(req.VolumeId), erasure_coding.ShardId(shardId))
if err != nil {
glog.Errorf("ec shard mount %v: %v", req, err)
} else {
glog.V(2).Infof("ec shard mount %v", req)
}
if err != nil {
return nil, fmt.Errorf("mount %d.%d: %v", req.VolumeId, shardId, err)
}
}
return &volume_server_pb.VolumeEcShardsMountResponse{}, nil
}
func (vs *VolumeServer) VolumeEcShardsUnmount(ctx context.Context, req *volume_server_pb.VolumeEcShardsUnmountRequest) (*volume_server_pb.VolumeEcShardsUnmountResponse, error) {
for _, shardId := range req.EcIndexes {
err := vs.store.UnmountEcShards(needle.VolumeId(req.VolumeId), erasure_coding.ShardId(shardId))
if err != nil {
glog.Errorf("ec shard unmount %v: %v", req, err)
} else {
glog.V(2).Infof("ec shard unmount %v", req)
}
if err != nil {
return nil, fmt.Errorf("unmount %d.%d: %v", req.VolumeId, shardId, err)
}
}
return &volume_server_pb.VolumeEcShardsUnmountResponse{}, nil
}

23
weed/shell/command_ec_encode.go
View file

@ -196,23 +196,36 @@ func oneServerCopyEcShardsFromSource(ctx context.Context, grpcDialOption grpc.Di
targetServer *master_pb.DataNodeInfo, startFromShardId uint32, shardCount uint32,
volumeId needle.VolumeId, collection string, existingLocation wdclient.Location) (copiedShardIds []uint32, err error) {
if targetServer.Id == existingLocation.Url {
return nil, nil
}
for shardId := startFromShardId; shardId < startFromShardId+shardCount; shardId++ {
fmt.Printf("copy %d.%d %s => %s\n", volumeId, shardId, existingLocation.Url, targetServer.Id)
fmt.Printf("allocate %d.%d %s => %s\n", volumeId, shardId, existingLocation.Url, targetServer.Id)
copiedShardIds = append(copiedShardIds, shardId)
}
err = operation.WithVolumeServerClient(targetServer.Id, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
if targetServer.Id != existingLocation.Url {
_, copyErr := volumeServerClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
VolumeId: uint32(volumeId),
Collection: collection,
EcIndexes: copiedShardIds,
SourceDataNode: existingLocation.Url,
})
if copyErr != nil {
return copyErr
}
}
_, mountErr := volumeServerClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
VolumeId: uint32(volumeId),
Collection: collection,
EcIndexes: copiedShardIds,
})
if mountErr != nil {
return mountErr
}
return nil
})
if err != nil {

71
weed/storage/disk_location_ec.go
View file

@ -16,20 +16,77 @@ var (
re = regexp.MustCompile("\\.ec[0-9][0-9]")
)
func (l *DiskLocation) loadEcShards(baseName string, shards []string, collection string, vid needle.VolumeId) (err error){
func (l *DiskLocation) FindEcShard(vid needle.VolumeId, shardId erasure_coding.ShardId) (*erasure_coding.EcVolumeShard, bool) {
l.ecShardsLock.RLock()
defer l.ecShardsLock.RUnlock()
ecShards, ok := l.ecShards[vid]
if !ok {
return nil, false
}
for _, ecShard := range ecShards {
if ecShard.ShardId == shardId {
return ecShard, true
}
}
return nil, false
}
func (l *DiskLocation) LoadEcShard(collection string, vid needle.VolumeId, shardId erasure_coding.ShardId) (err error) {
ecVolumeShard, err := erasure_coding.NewEcVolumeShard(l.Directory, collection, vid, shardId)
if err != nil {
return fmt.Errorf("failed to create ec shard %d.%d: %v", vid, shardId, err)
}
l.ecShardsLock.Lock()
l.ecShards[vid] = append(l.ecShards[vid], ecVolumeShard)
l.ecShardsLock.Unlock()
return nil
}
func (l *DiskLocation) UnloadEcShard(vid needle.VolumeId, shardId erasure_coding.ShardId) bool {
l.ecShardsLock.Lock()
defer l.ecShardsLock.Unlock()
vidShards, found := l.ecShards[vid]
if !found {
return false
}
shardIndex := -1
for i, shard := range vidShards {
if shard.ShardId == shardId {
shardIndex = i
break
}
}
if shardIndex < 0 {
return false
}
if len(vidShards) == 1 {
delete(l.ecShards, vid)
return true
}
l.ecShards[vid] = append(vidShards[:shardIndex], vidShards[shardIndex+1:]...)
return true
}
func (l *DiskLocation) loadEcShards(shards []string, collection string, vid needle.VolumeId) (err error) {
for _, shard := range shards {
shardId, err := strconv.ParseInt(path.Ext(shard)[3:], 10, 64)
if err != nil {
return fmt.Errorf("failed to parse ec shard name %v: %v", shard, err)
}
ecVolumeShard, err := erasure_coding.NewEcVolumeShard(l.Directory, collection, vid, int(shardId))
err = l.LoadEcShard(collection, vid, erasure_coding.ShardId(shardId))
if err != nil {
return fmt.Errorf("failed to create ec shard %v: %v", shard, err)
return fmt.Errorf("failed to load ec shard %v: %v", shard, err)
}
l.ecShardsLock.Lock()
l.ecShards[vid] = append(l.ecShards[vid], ecVolumeShard)
l.ecShardsLock.Unlock()
}
return nil
@ -72,7 +129,7 @@ func (l *DiskLocation) loadAllEcShards() (err error){
}
if ext == ".ecx" && volumeId == prevVolumeId {
if err = l.loadEcShards(baseName, sameVolumeShards, collection, volumeId);err!=nil{
if err = l.loadEcShards(sameVolumeShards, collection, volumeId); err != nil {
return fmt.Errorf("loadEcShards collection:%v volumeId:%d : %v", collection, volumeId, err)
}
prevVolumeId = volumeId

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

@ -24,16 +24,16 @@ type EcVolumeShard struct {
}
type EcVolumeShards []*EcVolumeShard
func NewEcVolumeShard(dirname string, collection string, id needle.VolumeId, shardId int) (v *EcVolumeShard, e error) {
func NewEcVolumeShard(dirname string, collection string, id needle.VolumeId, shardId ShardId) (v *EcVolumeShard, e error) {
v = &EcVolumeShard{dir: dirname, Collection: collection, VolumeId: id, ShardId: ShardId(shardId)}
v = &EcVolumeShard{dir: dirname, Collection: collection, VolumeId: id, ShardId: shardId}
baseFileName := v.FileName()
if v.ecxFile, e = os.OpenFile(baseFileName+".ecx", os.O_RDONLY, 0644); e != nil {
return nil, fmt.Errorf("cannot read ec volume index %s.ecx: %v", baseFileName, e)
}
if v.ecdFile, e = os.OpenFile(baseFileName+ToExt(shardId), os.O_RDONLY, 0644); e != nil {
return nil, fmt.Errorf("cannot read ec volume shard %s.%s: %v", baseFileName, ToExt(shardId), e)
if v.ecdFile, e = os.OpenFile(baseFileName+ToExt(int(shardId)), os.O_RDONLY, 0644); e != nil {
return nil, fmt.Errorf("cannot read ec volume shard %s.%s: %v", baseFileName, ToExt(int(shardId)), e)
}
return

1
weed/storage/store.go
View file

@ -271,6 +271,7 @@ func (s *Store) UnmountVolume(i needle.VolumeId) error {
Version: uint32(v.Version()),
Ttl: v.Ttl.ToUint32(),
}
for _, location := range s.Locations {
if err := location.UnloadVolume(i); err == nil {
glog.V(0).Infof("UnmountVolume %d", i)

58
weed/storage/store_ec.go
View file

@ -1,7 +1,12 @@
package storage
import (
"fmt"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
)
func (s *Store) CollectErasureCodingHeartbeat() *master_pb.Heartbeat {
@ -19,3 +24,56 @@ func (s *Store) CollectErasureCodingHeartbeat() *master_pb.Heartbeat {
}
}
func (s *Store) MountEcShards(collection string, vid needle.VolumeId, shardId erasure_coding.ShardId) error {
for _, location := range s.Locations {
if err := location.LoadEcShard(collection, vid, shardId); err == nil {
glog.V(0).Infof("MountEcShards %d.%d", vid, shardId)
var shardBits erasure_coding.ShardBits
s.NewEcShardsChan <- master_pb.VolumeEcShardInformationMessage{
Id: uint32(vid),
Collection: collection,
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
}
return nil
}
}
return fmt.Errorf("MountEcShards %d.%d not found on disk", vid, shardId)
}
func (s *Store) UnmountEcShards(vid needle.VolumeId, shardId erasure_coding.ShardId) error {
ecShard, found := s.findEcShard(vid, shardId)
if !found {
return nil
}
var shardBits erasure_coding.ShardBits
message := master_pb.VolumeEcShardInformationMessage{
Id: uint32(vid),
Collection: ecShard.Collection,
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
}
for _, location := range s.Locations {
if deleted := location.UnloadEcShard(vid, shardId); deleted {
glog.V(0).Infof("UnmountEcShards %d.%d", vid, shardId)
s.DeletedEcShardsChan <- message
return nil
}
}
return fmt.Errorf("UnmountEcShards %d.%d not found on disk", vid, shardId)
}
func (s *Store) findEcShard(vid needle.VolumeId, shardId erasure_coding.ShardId) (*erasure_coding.EcVolumeShard, bool) {
for _, location := range s.Locations {
if v, found := location.FindEcShard(vid, shardId); found {
return v, found
}
}
return nil, false
}