avoid fail on tail error

weed/operation/tail_volume.go

@@ -71,7 +71,10 @@ func TailVolumeFromSource(volumeServer string, grpcDialOption grpc.DialOption, v
 
 			n := new(needle.Needle)
 			n.ParseNeedleHeader(needleHeader)
-			n.ReadNeedleBodyBytes(needleBody, needle.CurrentVersion)
+			err = n.ReadNeedleBodyBytes(needleBody, needle.CurrentVersion)
+			if err != nil {
+				return err
+			}
 
 			err = fn(n)
 

weed/shell/command_volume_balance.go

@@ -340,7 +340,7 @@ func moveVolume(commandEnv *CommandEnv, v *master_pb.VolumeInformationMessage, f
 	}
 	fmt.Fprintf(os.Stdout, "  moving %s volume %s%d %s => %s\n", v.DiskType, collectionPrefix, v.Id, fullNode.info.Id, emptyNode.info.Id)
 	if applyChange {
-		return LiveMoveVolume(commandEnv.option.GrpcDialOption, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second, v.DiskType)
+		return LiveMoveVolume(commandEnv.option.GrpcDialOption, os.Stderr, needle.VolumeId(v.Id), fullNode.info.Id, emptyNode.info.Id, 5*time.Second, v.DiskType, false)
 	}
 	return nil
 }

weed/shell/command_volume_move.go

@@ -69,11 +69,11 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *CommandEnv, writer io.
 		return fmt.Errorf("source and target volume servers are the same!")
 	}
 
-	return LiveMoveVolume(commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, 5*time.Second, *diskTypeStr)
+	return LiveMoveVolume(commandEnv.option.GrpcDialOption, writer, volumeId, sourceVolumeServer, targetVolumeServer, 5*time.Second, *diskTypeStr, false)
 }
 
 // LiveMoveVolume moves one volume from one source volume server to one target volume server, with idleTimeout to drain the incoming requests.
-func LiveMoveVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, idleTimeout time.Duration, diskType string) (err error) {
+func LiveMoveVolume(grpcDialOption grpc.DialOption, writer io.Writer, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, idleTimeout time.Duration, diskType string, skipTailError bool) (err error) {
 
 	log.Printf("copying volume %d from %s to %s", volumeId, sourceVolumeServer, targetVolumeServer)
 	lastAppendAtNs, err := copyVolume(grpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, diskType)
@@ -83,8 +83,12 @@ func LiveMoveVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, so
 
 	log.Printf("tailing volume %d from %s to %s", volumeId, sourceVolumeServer, targetVolumeServer)
 	if err = tailVolume(grpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, lastAppendAtNs, idleTimeout); err != nil {
+		if skipTailError {
+			fmt.Fprintf(writer, "tail volume %d from %s to %s: %v", volumeId, sourceVolumeServer, targetVolumeServer, err)
+		} else {
 			return fmt.Errorf("tail volume %d from %s to %s: %v", volumeId, sourceVolumeServer, targetVolumeServer, err)
 		}
+	}
 
 	log.Printf("deleting volume %d from %s", volumeId, sourceVolumeServer)
 	if err = deleteVolume(grpcDialOption, volumeId, sourceVolumeServer); err != nil {

weed/shell/command_volume_tier_move.go

@@ -8,7 +8,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"io"
 	"path/filepath"
-	"strings"
+	"sync"
 	"time"
 
 	"github.com/chrislusf/seaweedfs/weed/storage/needle"
@@ -19,6 +19,9 @@ func init() {
 }
 
 type commandVolumeTierMove struct {
+	activeServers     map[string]struct{}
+	activeServersLock sync.Mutex
+	activeServersCond *sync.Cond
 }
 
 func (c *commandVolumeTierMove) Name() string {
@@ -38,6 +41,9 @@ func (c *commandVolumeTierMove) Help() string {
 
 func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
 
+	c.activeServers = make(map[string]struct{})
+	c.activeServersCond = sync.NewCond(new(sync.Mutex))
+
 	if err = commandEnv.confirmIsLocked(); err != nil {
 		return
 	}
@@ -75,7 +81,7 @@ func (c *commandVolumeTierMove) Do(args []string, commandEnv *CommandEnv, writer
 
 	_, allLocations := collectVolumeReplicaLocations(topologyInfo)
 	for _, vid := range volumeIds {
-		if err = doVolumeTierMove(commandEnv, writer, vid, toDiskType, allLocations, *applyChange); err != nil {
+		if err = c.doVolumeTierMove(commandEnv, writer, vid, toDiskType, allLocations, *applyChange); err != nil {
 			fmt.Printf("tier move volume %d: %v\n", vid, err)
 		}
 	}
@@ -92,7 +98,7 @@ func isOneOf(server string, locations []wdclient.Location) bool {
 	return false
 }
 
-func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, vid needle.VolumeId, toDiskType types.DiskType, allLocations []location, applyChanges bool) (err error) {
+func (c *commandVolumeTierMove) doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, vid needle.VolumeId, toDiskType types.DiskType, allLocations []location, applyChanges bool) (err error) {
 	// find volume location
 	locations, found := commandEnv.MasterClient.GetLocations(uint32(vid))
 	if !found {
@@ -127,26 +133,8 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, vid needle.Volum
 				break
 			}
 
-			// mark all replicas as read only
+			if err := c.doMoveOneVolume(commandEnv, writer, vid, toDiskType, locations, sourceVolumeServer, dst); err != nil {
-			if err = markVolumeReadonly(commandEnv.option.GrpcDialOption, vid, locations); err != nil {
+				return err
-				return fmt.Errorf("mark volume %d as readonly on %s: %v", vid, locations[0].Url, err)
-			}
-			if err = LiveMoveVolume(commandEnv.option.GrpcDialOption, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.ReadableString()); err != nil {
-				return fmt.Errorf("move volume %d %s => %s : %v", vid, locations[0].Url, dst.dataNode.Id, err)
-			}
-
-			// adjust volume count
-			dst.dataNode.DiskInfos[string(toDiskType)].VolumeCount++
-
-			// remove the remaining replicas
-			for _, loc := range locations {
-				if loc.Url != dst.dataNode.Id {
-					if err = deleteVolume(commandEnv.option.GrpcDialOption, vid, loc.Url); err != nil {
-						if !strings.Contains(err.Error(), "not found") {
-							fmt.Fprintf(writer, "failed to delete volume %d on %s: %v\n", vid, loc.Url, err)
-						}
-					}
-				}
 			}
 		}
 	}
@@ -158,6 +146,30 @@ func doVolumeTierMove(commandEnv *CommandEnv, writer io.Writer, vid needle.Volum
 	return nil
 }
 
+func (c *commandVolumeTierMove) doMoveOneVolume(commandEnv *CommandEnv, writer io.Writer, vid needle.VolumeId, toDiskType types.DiskType, locations []wdclient.Location, sourceVolumeServer string, dst location) (err error) {
+
+	// mark all replicas as read only
+	if err = markVolumeReadonly(commandEnv.option.GrpcDialOption, vid, locations); err != nil {
+		return fmt.Errorf("mark volume %d as readonly on %s: %v", vid, locations[0].Url, err)
+	}
+	if err = LiveMoveVolume(commandEnv.option.GrpcDialOption, writer, vid, sourceVolumeServer, dst.dataNode.Id, 5*time.Second, toDiskType.ReadableString(), true); err != nil {
+		return fmt.Errorf("move volume %d %s => %s : %v", vid, locations[0].Url, dst.dataNode.Id, err)
+	}
+
+	// adjust volume count
+	dst.dataNode.DiskInfos[string(toDiskType)].VolumeCount++
+
+	// remove the remaining replicas
+	for _, loc := range locations {
+		if loc.Url != dst.dataNode.Id && loc.Url != sourceVolumeServer {
+			if err = deleteVolume(commandEnv.option.GrpcDialOption, vid, loc.Url); err != nil {
+				fmt.Fprintf(writer, "failed to delete volume %d on %s: %v\n", vid, loc.Url, err)
+			}
+		}
+	}
+	return nil
+}
+
 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) {
 
 	quietSeconds := int64(quietPeriod / time.Second)