mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
397 lines
13 KiB
Go
397 lines
13 KiB
Go
package storage
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb"
|
|
"golang.org/x/exp/slices"
|
|
"io"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/klauspost/reedsolomon"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/operation"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/stats"
|
|
"github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding"
|
|
"github.com/seaweedfs/seaweedfs/weed/storage/needle"
|
|
"github.com/seaweedfs/seaweedfs/weed/storage/types"
|
|
)
|
|
|
|
func (s *Store) CollectErasureCodingHeartbeat() *master_pb.Heartbeat {
|
|
var ecShardMessages []*master_pb.VolumeEcShardInformationMessage
|
|
collectionEcShardSize := make(map[string]int64)
|
|
for _, location := range s.Locations {
|
|
location.ecVolumesLock.RLock()
|
|
for _, ecShards := range location.ecVolumes {
|
|
ecShardMessages = append(ecShardMessages, ecShards.ToVolumeEcShardInformationMessage()...)
|
|
|
|
for _, ecShard := range ecShards.Shards {
|
|
collectionEcShardSize[ecShards.Collection] += ecShard.Size()
|
|
}
|
|
}
|
|
location.ecVolumesLock.RUnlock()
|
|
}
|
|
|
|
for col, size := range collectionEcShardSize {
|
|
stats.VolumeServerDiskSizeGauge.WithLabelValues(col, "ec").Set(float64(size))
|
|
}
|
|
|
|
return &master_pb.Heartbeat{
|
|
EcShards: ecShardMessages,
|
|
HasNoEcShards: len(ecShardMessages) == 0,
|
|
}
|
|
|
|
}
|
|
|
|
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)),
|
|
DiskType: string(location.DiskType),
|
|
}
|
|
return nil
|
|
} else if err == os.ErrNotExist {
|
|
continue
|
|
} else {
|
|
return fmt.Errorf("%s load ec shard %d.%d: %v", location.Directory, vid, shardId, err)
|
|
}
|
|
}
|
|
|
|
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)),
|
|
DiskType: string(ecShard.DiskType),
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
func (s *Store) FindEcVolume(vid needle.VolumeId) (*erasure_coding.EcVolume, bool) {
|
|
for _, location := range s.Locations {
|
|
if s, found := location.FindEcVolume(vid); found {
|
|
return s, true
|
|
}
|
|
}
|
|
return nil, false
|
|
}
|
|
|
|
func (s *Store) DestroyEcVolume(vid needle.VolumeId) {
|
|
for _, location := range s.Locations {
|
|
location.DestroyEcVolume(vid)
|
|
}
|
|
}
|
|
|
|
func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle, onReadSizeFn func(size types.Size)) (int, error) {
|
|
for _, location := range s.Locations {
|
|
if localEcVolume, found := location.FindEcVolume(vid); found {
|
|
|
|
offset, size, intervals, err := localEcVolume.LocateEcShardNeedle(n.Id, localEcVolume.Version)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("locate in local ec volume: %v", err)
|
|
}
|
|
if size.IsDeleted() {
|
|
return 0, ErrorDeleted
|
|
}
|
|
|
|
if onReadSizeFn != nil {
|
|
onReadSizeFn(size)
|
|
}
|
|
|
|
glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToActualOffset(), size, intervals)
|
|
|
|
if len(intervals) > 1 {
|
|
glog.V(3).Infof("ReadEcShardNeedle needle id %s intervals:%+v", n.String(), intervals)
|
|
}
|
|
bytes, isDeleted, err := s.readEcShardIntervals(vid, n.Id, localEcVolume, intervals)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
|
|
}
|
|
if isDeleted {
|
|
return 0, ErrorDeleted
|
|
}
|
|
|
|
err = n.ReadBytes(bytes, offset.ToActualOffset(), size, localEcVolume.Version)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("readbytes: %v", err)
|
|
}
|
|
|
|
return len(bytes), nil
|
|
}
|
|
}
|
|
return 0, fmt.Errorf("ec shard %d not found", vid)
|
|
}
|
|
|
|
func (s *Store) readEcShardIntervals(vid needle.VolumeId, needleId types.NeedleId, ecVolume *erasure_coding.EcVolume, intervals []erasure_coding.Interval) (data []byte, is_deleted bool, err error) {
|
|
|
|
if err = s.cachedLookupEcShardLocations(ecVolume); err != nil {
|
|
return nil, false, fmt.Errorf("failed to locate shard via master grpc %s: %v", s.MasterAddress, err)
|
|
}
|
|
|
|
for i, interval := range intervals {
|
|
if d, isDeleted, e := s.readOneEcShardInterval(needleId, ecVolume, interval); e != nil {
|
|
return nil, isDeleted, e
|
|
} else {
|
|
if isDeleted {
|
|
is_deleted = true
|
|
}
|
|
if i == 0 {
|
|
data = d
|
|
} else {
|
|
data = append(data, d...)
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (s *Store) readOneEcShardInterval(needleId types.NeedleId, ecVolume *erasure_coding.EcVolume, interval erasure_coding.Interval) (data []byte, is_deleted bool, err error) {
|
|
shardId, actualOffset := interval.ToShardIdAndOffset(erasure_coding.ErasureCodingLargeBlockSize, erasure_coding.ErasureCodingSmallBlockSize)
|
|
data = make([]byte, interval.Size)
|
|
if shard, found := ecVolume.FindEcVolumeShard(shardId); found {
|
|
if _, err = shard.ReadAt(data, actualOffset); err != nil {
|
|
glog.V(0).Infof("read local ec shard %d.%d offset %d: %v", ecVolume.VolumeId, shardId, actualOffset, err)
|
|
return
|
|
}
|
|
} else {
|
|
ecVolume.ShardLocationsLock.RLock()
|
|
sourceDataNodes, hasShardIdLocation := ecVolume.ShardLocations[shardId]
|
|
ecVolume.ShardLocationsLock.RUnlock()
|
|
|
|
// try reading directly
|
|
if hasShardIdLocation {
|
|
_, is_deleted, err = s.readRemoteEcShardInterval(sourceDataNodes, needleId, ecVolume.VolumeId, shardId, data, actualOffset)
|
|
if err == nil {
|
|
return
|
|
}
|
|
glog.V(0).Infof("clearing ec shard %d.%d locations: %v", ecVolume.VolumeId, shardId, err)
|
|
}
|
|
|
|
// try reading by recovering from other shards
|
|
_, is_deleted, err = s.recoverOneRemoteEcShardInterval(needleId, ecVolume, shardId, data, actualOffset)
|
|
if err == nil {
|
|
return
|
|
}
|
|
glog.V(0).Infof("recover ec shard %d.%d : %v", ecVolume.VolumeId, shardId, err)
|
|
}
|
|
return
|
|
}
|
|
|
|
func forgetShardId(ecVolume *erasure_coding.EcVolume, shardId erasure_coding.ShardId) {
|
|
// failed to access the source data nodes, clear it up
|
|
ecVolume.ShardLocationsLock.Lock()
|
|
delete(ecVolume.ShardLocations, shardId)
|
|
ecVolume.ShardLocationsLock.Unlock()
|
|
}
|
|
|
|
func (s *Store) cachedLookupEcShardLocations(ecVolume *erasure_coding.EcVolume) (err error) {
|
|
|
|
shardCount := len(ecVolume.ShardLocations)
|
|
if shardCount < erasure_coding.DataShardsCount &&
|
|
ecVolume.ShardLocationsRefreshTime.Add(11*time.Second).After(time.Now()) ||
|
|
shardCount == erasure_coding.TotalShardsCount &&
|
|
ecVolume.ShardLocationsRefreshTime.Add(37*time.Minute).After(time.Now()) ||
|
|
shardCount >= erasure_coding.DataShardsCount &&
|
|
ecVolume.ShardLocationsRefreshTime.Add(7*time.Minute).After(time.Now()) {
|
|
// still fresh
|
|
return nil
|
|
}
|
|
|
|
glog.V(3).Infof("lookup and cache ec volume %d locations", ecVolume.VolumeId)
|
|
|
|
err = operation.WithMasterServerClient(false, s.MasterAddress, s.grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
|
|
req := &master_pb.LookupEcVolumeRequest{
|
|
VolumeId: uint32(ecVolume.VolumeId),
|
|
}
|
|
resp, err := masterClient.LookupEcVolume(context.Background(), req)
|
|
if err != nil {
|
|
return fmt.Errorf("lookup ec volume %d: %v", ecVolume.VolumeId, err)
|
|
}
|
|
if len(resp.ShardIdLocations) < erasure_coding.DataShardsCount {
|
|
return fmt.Errorf("only %d shards found but %d required", len(resp.ShardIdLocations), erasure_coding.DataShardsCount)
|
|
}
|
|
|
|
ecVolume.ShardLocationsLock.Lock()
|
|
for _, shardIdLocations := range resp.ShardIdLocations {
|
|
shardId := erasure_coding.ShardId(shardIdLocations.ShardId)
|
|
delete(ecVolume.ShardLocations, shardId)
|
|
for _, loc := range shardIdLocations.Locations {
|
|
ecVolume.ShardLocations[shardId] = append(ecVolume.ShardLocations[shardId], pb.NewServerAddressFromLocation(loc))
|
|
}
|
|
}
|
|
ecVolume.ShardLocationsRefreshTime = time.Now()
|
|
ecVolume.ShardLocationsLock.Unlock()
|
|
|
|
return nil
|
|
})
|
|
return
|
|
}
|
|
|
|
func (s *Store) readRemoteEcShardInterval(sourceDataNodes []pb.ServerAddress, needleId types.NeedleId, vid needle.VolumeId, shardId erasure_coding.ShardId, buf []byte, offset int64) (n int, is_deleted bool, err error) {
|
|
|
|
if len(sourceDataNodes) == 0 {
|
|
return 0, false, fmt.Errorf("failed to find ec shard %d.%d", vid, shardId)
|
|
}
|
|
|
|
for _, sourceDataNode := range sourceDataNodes {
|
|
glog.V(3).Infof("read remote ec shard %d.%d from %s", vid, shardId, sourceDataNode)
|
|
n, is_deleted, err = s.doReadRemoteEcShardInterval(sourceDataNode, needleId, vid, shardId, buf, offset)
|
|
if err == nil {
|
|
return
|
|
}
|
|
glog.V(1).Infof("read remote ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, err)
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func (s *Store) doReadRemoteEcShardInterval(sourceDataNode pb.ServerAddress, needleId types.NeedleId, vid needle.VolumeId, shardId erasure_coding.ShardId, buf []byte, offset int64) (n int, is_deleted bool, err error) {
|
|
|
|
err = operation.WithVolumeServerClient(false, sourceDataNode, s.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
|
|
|
|
// copy data slice
|
|
shardReadClient, err := client.VolumeEcShardRead(context.Background(), &volume_server_pb.VolumeEcShardReadRequest{
|
|
VolumeId: uint32(vid),
|
|
ShardId: uint32(shardId),
|
|
Offset: offset,
|
|
Size: int64(len(buf)),
|
|
FileKey: uint64(needleId),
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("failed to start reading ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, err)
|
|
}
|
|
|
|
for {
|
|
resp, receiveErr := shardReadClient.Recv()
|
|
if receiveErr == io.EOF {
|
|
break
|
|
}
|
|
if receiveErr != nil {
|
|
return fmt.Errorf("receiving ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, receiveErr)
|
|
}
|
|
if resp.IsDeleted {
|
|
is_deleted = true
|
|
}
|
|
copy(buf[n:n+len(resp.Data)], resp.Data)
|
|
n += len(resp.Data)
|
|
}
|
|
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return 0, is_deleted, fmt.Errorf("read ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, err)
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func (s *Store) recoverOneRemoteEcShardInterval(needleId types.NeedleId, ecVolume *erasure_coding.EcVolume, shardIdToRecover erasure_coding.ShardId, buf []byte, offset int64) (n int, is_deleted bool, err error) {
|
|
glog.V(3).Infof("recover ec shard %d.%d from other locations", ecVolume.VolumeId, shardIdToRecover)
|
|
|
|
enc, err := reedsolomon.New(erasure_coding.DataShardsCount, erasure_coding.ParityShardsCount)
|
|
if err != nil {
|
|
return 0, false, fmt.Errorf("failed to create encoder: %v", err)
|
|
}
|
|
|
|
bufs := make([][]byte, erasure_coding.TotalShardsCount)
|
|
|
|
var wg sync.WaitGroup
|
|
ecVolume.ShardLocationsLock.RLock()
|
|
for shardId, locations := range ecVolume.ShardLocations {
|
|
|
|
// skip currnent shard or empty shard
|
|
if shardId == shardIdToRecover {
|
|
continue
|
|
}
|
|
if len(locations) == 0 {
|
|
glog.V(3).Infof("readRemoteEcShardInterval missing %d.%d from %+v", ecVolume.VolumeId, shardId, locations)
|
|
continue
|
|
}
|
|
|
|
// read from remote locations
|
|
wg.Add(1)
|
|
go func(shardId erasure_coding.ShardId, locations []pb.ServerAddress) {
|
|
defer wg.Done()
|
|
data := make([]byte, len(buf))
|
|
nRead, isDeleted, readErr := s.readRemoteEcShardInterval(locations, needleId, ecVolume.VolumeId, shardId, data, offset)
|
|
if readErr != nil {
|
|
glog.V(3).Infof("recover: readRemoteEcShardInterval %d.%d %d bytes from %+v: %v", ecVolume.VolumeId, shardId, nRead, locations, readErr)
|
|
forgetShardId(ecVolume, shardId)
|
|
}
|
|
if isDeleted {
|
|
is_deleted = true
|
|
}
|
|
if nRead == len(buf) {
|
|
bufs[shardId] = data
|
|
}
|
|
}(shardId, locations)
|
|
}
|
|
ecVolume.ShardLocationsLock.RUnlock()
|
|
|
|
wg.Wait()
|
|
|
|
if err = enc.ReconstructData(bufs); err != nil {
|
|
glog.V(3).Infof("recovered ec shard %d.%d failed: %v", ecVolume.VolumeId, shardIdToRecover, err)
|
|
return 0, false, err
|
|
}
|
|
glog.V(4).Infof("recovered ec shard %d.%d from other locations", ecVolume.VolumeId, shardIdToRecover)
|
|
|
|
copy(buf, bufs[shardIdToRecover])
|
|
|
|
return len(buf), is_deleted, nil
|
|
}
|
|
|
|
func (s *Store) EcVolumes() (ecVolumes []*erasure_coding.EcVolume) {
|
|
for _, location := range s.Locations {
|
|
location.ecVolumesLock.RLock()
|
|
for _, v := range location.ecVolumes {
|
|
ecVolumes = append(ecVolumes, v)
|
|
}
|
|
location.ecVolumesLock.RUnlock()
|
|
}
|
|
slices.SortFunc(ecVolumes, func(a, b *erasure_coding.EcVolume) bool {
|
|
return a.VolumeId > b.VolumeId
|
|
})
|
|
return ecVolumes
|
|
}
|