package storage import ( "fmt" "path/filepath" "strings" "sync/atomic" "google.golang.org/grpc" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/stats" "github.com/chrislusf/seaweedfs/weed/storage/erasure_coding" "github.com/chrislusf/seaweedfs/weed/storage/needle" "github.com/chrislusf/seaweedfs/weed/storage/super_block" . "github.com/chrislusf/seaweedfs/weed/storage/types" ) const ( MAX_TTL_VOLUME_REMOVAL_DELAY = 10 // 10 minutes ) /* * A VolumeServer contains one Store */ type Store struct { MasterAddress string grpcDialOption grpc.DialOption volumeSizeLimit uint64 //read from the master Ip string Port int PublicUrl string Locations []*DiskLocation dataCenter string //optional informaton, overwriting master setting if exists rack string //optional information, overwriting master setting if exists connected bool NeedleMapType NeedleMapType NewVolumesChan chan master_pb.VolumeShortInformationMessage DeletedVolumesChan chan master_pb.VolumeShortInformationMessage NewEcShardsChan chan master_pb.VolumeEcShardInformationMessage DeletedEcShardsChan chan master_pb.VolumeEcShardInformationMessage } func (s *Store) String() (str string) { str = fmt.Sprintf("Ip:%s, Port:%d, PublicUrl:%s, dataCenter:%s, rack:%s, connected:%v, volumeSizeLimit:%d", s.Ip, s.Port, s.PublicUrl, s.dataCenter, s.rack, s.connected, s.GetVolumeSizeLimit()) return } func NewStore(grpcDialOption grpc.DialOption, port int, ip, publicUrl string, dirnames []string, maxVolumeCounts []int, needleMapKind NeedleMapType) (s *Store) { s = &Store{grpcDialOption: grpcDialOption, Port: port, Ip: ip, PublicUrl: publicUrl, NeedleMapType: needleMapKind} s.Locations = make([]*DiskLocation, 0) for i := 0; i < len(dirnames); i++ { location := NewDiskLocation(dirnames[i], maxVolumeCounts[i]) location.loadExistingVolumes(needleMapKind) s.Locations = append(s.Locations, location) stats.VolumeServerMaxVolumeCounter.Add(float64(maxVolumeCounts[i])) } s.NewVolumesChan = make(chan master_pb.VolumeShortInformationMessage, 3) s.DeletedVolumesChan = make(chan master_pb.VolumeShortInformationMessage, 3) s.NewEcShardsChan = make(chan master_pb.VolumeEcShardInformationMessage, 3) s.DeletedEcShardsChan = make(chan master_pb.VolumeEcShardInformationMessage, 3) return } func (s *Store) AddVolume(volumeId needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement string, ttlString string, preallocate int64, MemoryMapMaxSizeMb uint32) error { rt, e := super_block.NewReplicaPlacementFromString(replicaPlacement) if e != nil { return e } ttl, e := needle.ReadTTL(ttlString) if e != nil { return e } e = s.addVolume(volumeId, collection, needleMapKind, rt, ttl, preallocate, MemoryMapMaxSizeMb) return e } func (s *Store) DeleteCollection(collection string) (e error) { for _, location := range s.Locations { e = location.DeleteCollectionFromDiskLocation(collection) if e != nil { return } // let the heartbeat send the list of volumes, instead of sending the deleted volume ids to DeletedVolumesChan } return } func (s *Store) findVolume(vid needle.VolumeId) *Volume { for _, location := range s.Locations { if v, found := location.FindVolume(vid); found { return v } } return nil } func (s *Store) FindFreeLocation() (ret *DiskLocation) { max := 0 for _, location := range s.Locations { currentFreeCount := location.MaxVolumeCount - location.VolumesLen() currentFreeCount *= erasure_coding.DataShardsCount currentFreeCount -= location.EcVolumesLen() currentFreeCount /= erasure_coding.DataShardsCount if currentFreeCount > max { max = currentFreeCount ret = location } } return ret } func (s *Store) addVolume(vid needle.VolumeId, collection string, needleMapKind NeedleMapType, replicaPlacement *super_block.ReplicaPlacement, ttl *needle.TTL, preallocate int64, memoryMapMaxSizeMb uint32) error { if s.findVolume(vid) != nil { return fmt.Errorf("Volume Id %d already exists!", vid) } if location := s.FindFreeLocation(); location != nil { glog.V(0).Infof("In dir %s adds volume:%v collection:%s replicaPlacement:%v ttl:%v", location.Directory, vid, collection, replicaPlacement, ttl) if volume, err := NewVolume(location.Directory, collection, vid, needleMapKind, replicaPlacement, ttl, preallocate, memoryMapMaxSizeMb); err == nil { location.SetVolume(vid, volume) glog.V(0).Infof("add volume %d", vid) s.NewVolumesChan <- master_pb.VolumeShortInformationMessage{ Id: uint32(vid), Collection: collection, ReplicaPlacement: uint32(replicaPlacement.Byte()), Version: uint32(volume.Version()), Ttl: ttl.ToUint32(), } return nil } else { return err } } return fmt.Errorf("No more free space left") } func (s *Store) VolumeInfos() (allStats []*VolumeInfo) { for _, location := range s.Locations { stats := collectStatsForOneLocation(location) allStats = append(allStats, stats...) } sortVolumeInfos(allStats) return allStats } func collectStatsForOneLocation(location *DiskLocation) (stats []*VolumeInfo) { location.volumesLock.RLock() defer location.volumesLock.RUnlock() for k, v := range location.volumes { s := collectStatForOneVolume(k, v) stats = append(stats, s) } return stats } func collectStatForOneVolume(vid needle.VolumeId, v *Volume) (s *VolumeInfo) { s = &VolumeInfo{ Id: vid, Collection: v.Collection, ReplicaPlacement: v.ReplicaPlacement, Version: v.Version(), ReadOnly: v.IsReadOnly(), Ttl: v.Ttl, CompactRevision: uint32(v.CompactionRevision), } s.RemoteStorageName, s.RemoteStorageKey = v.RemoteStorageNameKey() v.dataFileAccessLock.RLock() defer v.dataFileAccessLock.RUnlock() if v.nm == nil { return } s.FileCount = v.nm.FileCount() s.DeleteCount = v.nm.DeletedCount() s.DeletedByteCount = v.nm.DeletedSize() s.Size = v.nm.ContentSize() return } func (s *Store) SetDataCenter(dataCenter string) { s.dataCenter = dataCenter } func (s *Store) SetRack(rack string) { s.rack = rack } func (s *Store) CollectHeartbeat() *master_pb.Heartbeat { var volumeMessages []*master_pb.VolumeInformationMessage maxVolumeCount := 0 var maxFileKey NeedleId collectionVolumeSize := make(map[string]uint64) for _, location := range s.Locations { var deleteVids []needle.VolumeId maxVolumeCount = maxVolumeCount + location.MaxVolumeCount location.volumesLock.RLock() for _, v := range location.volumes { if maxFileKey < v.MaxFileKey() { maxFileKey = v.MaxFileKey() } if !v.expired(s.GetVolumeSizeLimit()) { volumeMessages = append(volumeMessages, v.ToVolumeInformationMessage()) } else { if v.expiredLongEnough(MAX_TTL_VOLUME_REMOVAL_DELAY) { deleteVids = append(deleteVids, v.Id) } else { glog.V(0).Infoln("volume", v.Id, "is expired.") } } fileSize, _, _ := v.FileStat() collectionVolumeSize[v.Collection] += fileSize } location.volumesLock.RUnlock() if len(deleteVids) > 0 { // delete expired volumes. location.volumesLock.Lock() for _, vid := range deleteVids { found, err := location.deleteVolumeById(vid) if found { if err == nil { glog.V(0).Infof("volume %d is deleted", vid) } else { glog.V(0).Infof("delete volume %d: %v", vid, err) } } } location.volumesLock.Unlock() } } for col, size := range collectionVolumeSize { stats.VolumeServerDiskSizeGauge.WithLabelValues(col, "normal").Set(float64(size)) } return &master_pb.Heartbeat{ Ip: s.Ip, Port: uint32(s.Port), PublicUrl: s.PublicUrl, MaxVolumeCount: uint32(maxVolumeCount), MaxFileKey: NeedleIdToUint64(maxFileKey), DataCenter: s.dataCenter, Rack: s.rack, Volumes: volumeMessages, HasNoVolumes: len(volumeMessages) == 0, } } func (s *Store) Close() { for _, location := range s.Locations { location.Close() } } func (s *Store) WriteVolumeNeedle(i needle.VolumeId, n *needle.Needle, fsync bool) (isUnchanged bool, err error) { if v := s.findVolume(i); v != nil { if v.IsReadOnly() { err = fmt.Errorf("volume %d is read only", i) return } // using len(n.Data) here instead of n.Size before n.Size is populated in v.writeNeedle(n) if MaxPossibleVolumeSize >= v.ContentSize()+uint64(needle.GetActualSize(uint32(len(n.Data)), v.Version())) { _, _, isUnchanged, err = v.writeNeedle(n, fsync) } else { err = fmt.Errorf("volume size limit %d exceeded! current size is %d", s.GetVolumeSizeLimit(), v.ContentSize()) } return } glog.V(0).Infoln("volume", i, "not found!") err = fmt.Errorf("volume %d not found on %s:%d", i, s.Ip, s.Port) return } func (s *Store) DeleteVolumeNeedle(i needle.VolumeId, n *needle.Needle) (uint32, error) { if v := s.findVolume(i); v != nil { if v.noWriteOrDelete { return 0, fmt.Errorf("volume %d is read only", i) } if MaxPossibleVolumeSize >= v.ContentSize()+uint64(needle.GetActualSize(0, v.Version())) { return v.deleteNeedle(n) } else { return 0, fmt.Errorf("volume size limit %d exceeded! current size is %d", s.GetVolumeSizeLimit(), v.ContentSize()) } } return 0, fmt.Errorf("volume %d not found on %s:%d", i, s.Ip, s.Port) } func (s *Store) ReadVolumeNeedle(i needle.VolumeId, n *needle.Needle) (int, error) { if v := s.findVolume(i); v != nil { return v.readNeedle(n) } return 0, fmt.Errorf("volume %d not found", i) } func (s *Store) GetVolume(i needle.VolumeId) *Volume { return s.findVolume(i) } func (s *Store) HasVolume(i needle.VolumeId) bool { v := s.findVolume(i) return v != nil } func (s *Store) MarkVolumeReadonly(i needle.VolumeId) error { v := s.findVolume(i) if v == nil { return fmt.Errorf("volume %d not found", i) } v.noWriteOrDelete = true return nil } func (s *Store) MountVolume(i needle.VolumeId) error { for _, location := range s.Locations { if found := location.LoadVolume(i, s.NeedleMapType); found == true { glog.V(0).Infof("mount volume %d", i) v := s.findVolume(i) s.NewVolumesChan <- master_pb.VolumeShortInformationMessage{ Id: uint32(v.Id), Collection: v.Collection, ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()), Version: uint32(v.Version()), Ttl: v.Ttl.ToUint32(), } return nil } } return fmt.Errorf("volume %d not found on disk", i) } func (s *Store) UnmountVolume(i needle.VolumeId) error { v := s.findVolume(i) if v == nil { return nil } message := master_pb.VolumeShortInformationMessage{ Id: uint32(v.Id), Collection: v.Collection, ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()), 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) s.DeletedVolumesChan <- message return nil } } return fmt.Errorf("volume %d not found on disk", i) } func (s *Store) DeleteVolume(i needle.VolumeId) error { v := s.findVolume(i) if v == nil { return fmt.Errorf("delete volume %d not found on disk", i) } message := master_pb.VolumeShortInformationMessage{ Id: uint32(v.Id), Collection: v.Collection, ReplicaPlacement: uint32(v.ReplicaPlacement.Byte()), Version: uint32(v.Version()), Ttl: v.Ttl.ToUint32(), } for _, location := range s.Locations { if found, error := location.deleteVolumeById(i); found && error == nil { glog.V(0).Infof("DeleteVolume %d", i) s.DeletedVolumesChan <- message return nil } } return fmt.Errorf("volume %d not found on disk", i) } func (s *Store) ConfigureVolume(i needle.VolumeId, replication string) error { for _, location := range s.Locations { fileInfo, found := location.LocateVolume(i) if !found { continue } // load, modify, save baseFileName := strings.TrimSuffix(fileInfo.Name(), filepath.Ext(fileInfo.Name())) vifFile := filepath.Join(location.Directory, baseFileName+".vif") volumeInfo, _, err := pb.MaybeLoadVolumeInfo(vifFile) if err != nil { return fmt.Errorf("volume %d fail to load vif", i) } volumeInfo.Replication = replication err = pb.SaveVolumeInfo(vifFile, volumeInfo) if err != nil { return fmt.Errorf("volume %d fail to save vif", i) } return nil } return fmt.Errorf("volume %d not found on disk", i) } func (s *Store) SetVolumeSizeLimit(x uint64) { atomic.StoreUint64(&s.volumeSizeLimit, x) } func (s *Store) GetVolumeSizeLimit() uint64 { return atomic.LoadUint64(&s.volumeSizeLimit) } func (s *Store) MaybeAdjustVolumeMax() (hasChanges bool) { volumeSizeLimit := s.GetVolumeSizeLimit() for _, diskLocation := range s.Locations { if diskLocation.MaxVolumeCount == 0 { diskStatus := stats.NewDiskStatus(diskLocation.Directory) unusedSpace := diskLocation.UnUsedSpace(volumeSizeLimit) unclaimedSpaces := int64(diskStatus.Free) - int64(unusedSpace) volCount := diskLocation.VolumesLen() maxVolumeCount := volCount if unclaimedSpaces > int64(volumeSizeLimit) { maxVolumeCount += int(uint64(unclaimedSpaces)/volumeSizeLimit) - 1 } diskLocation.MaxVolumeCount = maxVolumeCount glog.V(0).Infof("disk %s max %d unclaimedSpace:%dMB, unused:%dMB volumeSizeLimit:%dMB", diskLocation.Directory, maxVolumeCount, unclaimedSpaces/1024/1024, unusedSpace/1024/1024, volumeSizeLimit/1024/1024) hasChanges = true } } return }