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package shell
import ( "flag" "github.com/seaweedfs/seaweedfs/weed/pb" "github.com/seaweedfs/seaweedfs/weed/pb/master_pb" "github.com/seaweedfs/seaweedfs/weed/storage/needle" "github.com/seaweedfs/seaweedfs/weed/storage/super_block" "io" "log" "time" )
func init() { Commands = append(Commands, &commandVolumeDeleteEmpty{}) }
type commandVolumeDeleteEmpty struct { }
func (c *commandVolumeDeleteEmpty) Name() string { return "volume.deleteEmpty" }
func (c *commandVolumeDeleteEmpty) Help() string { return `delete empty volumes from all volume servers
volume.deleteEmpty -quietFor=24h -force
This command deletes all empty volumes from one volume server.
` }
func (c *commandVolumeDeleteEmpty) IsResourceHeavy() bool { return false }
func (c *commandVolumeDeleteEmpty) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
volDeleteCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError) quietPeriod := volDeleteCommand.Duration("quietFor", 24*time.Hour, "select empty volumes with no recent writes, avoid newly created ones") applyBalancing := volDeleteCommand.Bool("force", false, "apply to delete empty volumes") if err = volDeleteCommand.Parse(args); err != nil { return nil } infoAboutSimulationMode(writer, *applyBalancing, "-force")
if err = commandEnv.confirmIsLocked(args); err != nil { return }
// collect topology information
topologyInfo, _, err := collectTopologyInfo(commandEnv, 0) if err != nil { return err }
quietSeconds := int64(*quietPeriod / time.Second) nowUnixSeconds := time.Now().Unix()
eachDataNode(topologyInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) { for _, diskInfo := range dn.DiskInfos { for _, v := range diskInfo.VolumeInfos { if v.Size <= super_block.SuperBlockSize && v.ModifiedAtSecond > 0 && v.ModifiedAtSecond+quietSeconds < nowUnixSeconds { if *applyBalancing { log.Printf("deleting empty volume %d from %s", v.Id, dn.Id) if deleteErr := deleteVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), pb.NewServerAddressFromDataNode(dn), true); deleteErr != nil { err = deleteErr } continue } else { log.Printf("empty volume %d from %s", v.Id, dn.Id) } } } } })
return }
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