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