mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-28 13:31:27 +08:00
242 lines
8.0 KiB
Go
242 lines
8.0 KiB
Go
package shell
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import (
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"flag"
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"fmt"
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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/storage/types"
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"github.com/chrislusf/seaweedfs/weed/wdclient"
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"io"
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"path/filepath"
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"sync"
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"time"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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)
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func init() {
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Commands = append(Commands, &commandVolumeTierMove{})
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}
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type commandVolumeTierMove struct {
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activeServers map[pb.ServerAddress]struct{}
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activeServersLock sync.Mutex
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activeServersCond *sync.Cond
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}
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func (c *commandVolumeTierMove) Name() string {
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return "volume.tier.move"
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}
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func (c *commandVolumeTierMove) Help() string {
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return `change a volume from one disk type to another
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volume.tier.move -fromDiskType=hdd -toDiskType=ssd [-collectionPattern=""] [-fullPercent=95] [-quietFor=1h]
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Even if the volume is replicated, only one replica will be changed and the rest replicas will be dropped.
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So "volume.fix.replication" and "volume.balance" should be followed.
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`
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}
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func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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c.activeServers = make(map[pb.ServerAddress]struct{})
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c.activeServersCond = sync.NewCond(new(sync.Mutex))
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tierCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
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collectionPattern := tierCommand.String("collectionPattern", "", "match with wildcard characters '*' and '?'")
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fullPercentage := tierCommand.Float64("fullPercent", 95, "the volume reaches the percentage of max volume size")
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quietPeriod := tierCommand.Duration("quietFor", 24*time.Hour, "select volumes without no writes for this period")
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source := tierCommand.String("fromDiskType", "", "the source disk type")
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target := tierCommand.String("toDiskType", "", "the target disk type")
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applyChange := tierCommand.Bool("force", false, "actually apply the changes")
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if err = tierCommand.Parse(args); err != nil {
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return nil
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}
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if err = commandEnv.confirmIsLocked(); err != nil {
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return
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}
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fromDiskType := types.ToDiskType(*source)
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toDiskType := types.ToDiskType(*target)
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if fromDiskType == toDiskType {
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return fmt.Errorf("source tier %s is the same as target tier %s", fromDiskType, toDiskType)
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}
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// collect topology information
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topologyInfo, volumeSizeLimitMb, err := collectTopologyInfo(commandEnv)
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if err != nil {
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return err
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}
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// collect all volumes that should change
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volumeIds, err := collectVolumeIdsForTierChange(commandEnv, topologyInfo, volumeSizeLimitMb, fromDiskType, *collectionPattern, *fullPercentage, *quietPeriod)
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if err != nil {
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return err
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}
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fmt.Printf("tier move volumes: %v\n", volumeIds)
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_, allLocations := collectVolumeReplicaLocations(topologyInfo)
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for _, vid := range volumeIds {
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if err = c.doVolumeTierMove(commandEnv, writer, vid, toDiskType, allLocations, *applyChange); err != nil {
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fmt.Printf("tier move volume %d: %v\n", vid, err)
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}
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}
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return nil
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}
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func isOneOf(server string, locations []wdclient.Location) bool {
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for _, loc := range locations {
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if server == loc.Url {
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return true
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}
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}
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return false
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}
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func (c *commandVolumeTierMove) doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, vid needle.VolumeId, toDiskType types.DiskType, allLocations []location, applyChanges bool) (err error) {
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// find volume location
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locations, found := commandEnv.MasterClient.GetLocations(uint32(vid))
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if !found {
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return fmt.Errorf("volume %d not found", vid)
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}
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// find one server with the most empty volume slots with target disk type
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hasFoundTarget := false
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keepDataNodesSorted(allLocations, toDiskType)
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fn := capacityByFreeVolumeCount(toDiskType)
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wg := sync.WaitGroup{}
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for _, dst := range allLocations {
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if fn(dst.dataNode) > 0 && !hasFoundTarget {
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// ask the volume server to replicate the volume
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if isOneOf(dst.dataNode.Id, locations) {
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continue
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}
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var sourceVolumeServer pb.ServerAddress
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for _, loc := range locations {
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if loc.Url != dst.dataNode.Id {
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sourceVolumeServer = loc.ServerAddress()
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}
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}
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if sourceVolumeServer == "" {
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continue
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}
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fmt.Fprintf(writer, "moving volume %d from %s to %s with disk type %s ...\n", vid, sourceVolumeServer, dst.dataNode.Id, toDiskType.ReadableString())
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hasFoundTarget = true
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if !applyChanges {
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// adjust volume count
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dst.dataNode.DiskInfos[string(toDiskType)].VolumeCount++
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break
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}
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destServerAddress := pb.NewServerAddressFromDataNode(dst.dataNode)
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c.activeServersCond.L.Lock()
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_, isSourceActive := c.activeServers[sourceVolumeServer]
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_, isDestActive := c.activeServers[destServerAddress]
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for isSourceActive || isDestActive {
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c.activeServersCond.Wait()
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_, isSourceActive = c.activeServers[sourceVolumeServer]
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_, isDestActive = c.activeServers[destServerAddress]
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}
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c.activeServers[sourceVolumeServer] = struct{}{}
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c.activeServers[destServerAddress] = struct{}{}
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c.activeServersCond.L.Unlock()
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wg.Add(1)
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go func(dst location) {
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if err := c.doMoveOneVolume(commandEnv, writer, vid, toDiskType, locations, sourceVolumeServer, dst); err != nil {
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fmt.Fprintf(writer, "move volume %d %s => %s: %v\n", vid, sourceVolumeServer, dst.dataNode.Id, err)
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}
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delete(c.activeServers, sourceVolumeServer)
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delete(c.activeServers, destServerAddress)
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c.activeServersCond.Signal()
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wg.Done()
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}(dst)
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}
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}
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wg.Wait()
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if !hasFoundTarget {
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fmt.Fprintf(writer, "can not find disk type %s for volume %d\n", toDiskType.ReadableString(), vid)
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}
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return nil
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}
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func (c *commandVolumeTierMove) doMoveOneVolume(commandEnv *CommandEnv, writer io.Writer, vid needle.VolumeId, toDiskType types.DiskType, locations []wdclient.Location, sourceVolumeServer pb.ServerAddress, dst location) (err error) {
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// mark all replicas as read only
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if err = markVolumeReplicasWritable(commandEnv.option.GrpcDialOption, vid, locations, false); err != nil {
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return fmt.Errorf("mark volume %d as readonly on %s: %v", vid, locations[0].Url, err)
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}
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if err = LiveMoveVolume(commandEnv.option.GrpcDialOption, writer, vid, sourceVolumeServer, pb.NewServerAddressFromDataNode(dst.dataNode), 5*time.Second, toDiskType.ReadableString(), true); err != nil {
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// mark all replicas as writable
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if err = markVolumeReplicasWritable(commandEnv.option.GrpcDialOption, vid, locations, true); err != nil {
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glog.Errorf("mark volume %d as writable on %s: %v", vid, locations[0].Url, err)
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}
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return fmt.Errorf("move volume %d %s => %s : %v", vid, locations[0].Url, dst.dataNode.Id, err)
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}
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// adjust volume count
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dst.dataNode.DiskInfos[string(toDiskType)].VolumeCount++
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// remove the remaining replicas
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for _, loc := range locations {
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if loc.Url != dst.dataNode.Id && loc.ServerAddress() != sourceVolumeServer {
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if err = deleteVolume(commandEnv.option.GrpcDialOption, vid, loc.ServerAddress()); err != nil {
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fmt.Fprintf(writer, "failed to delete volume %d on %s: %v\n", vid, loc.Url, err)
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}
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}
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}
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return nil
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}
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func collectVolumeIdsForTierChange(commandEnv *CommandEnv, topologyInfo *master_pb.TopologyInfo, volumeSizeLimitMb uint64, sourceTier types.DiskType, collectionPattern string, fullPercentage float64, quietPeriod time.Duration) (vids []needle.VolumeId, err error) {
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quietSeconds := int64(quietPeriod / time.Second)
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nowUnixSeconds := time.Now().Unix()
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fmt.Printf("collect %s volumes quiet for: %d seconds\n", sourceTier, quietSeconds)
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vidMap := make(map[uint32]bool)
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eachDataNode(topologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
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for _, diskInfo := range dn.DiskInfos {
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for _, v := range diskInfo.VolumeInfos {
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// check collection name pattern
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if collectionPattern != "" {
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matched, err := filepath.Match(collectionPattern, v.Collection)
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if err != nil {
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return
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}
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if !matched {
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continue
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}
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}
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if v.ModifiedAtSecond+quietSeconds < nowUnixSeconds && types.ToDiskType(v.DiskType) == sourceTier {
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if float64(v.Size) > fullPercentage/100*float64(volumeSizeLimitMb)*1024*1024 {
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vidMap[v.Id] = true
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}
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}
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}
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}
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})
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for vid := range vidMap {
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vids = append(vids, needle.VolumeId(vid))
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}
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return
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}
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