shell: add command volume.move

weed/topology/data_node.go

@@ -78,6 +78,20 @@ func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) (newVolume
 	return
 }
 
+func (dn *DataNode) DeltaUpdateVolumes(newlVolumes, deletedVolumes []storage.VolumeInfo) {
+	dn.Lock()
+	for _, v := range deletedVolumes {
+		delete(dn.volumes, v.Id)
+		dn.UpAdjustVolumeCountDelta(-1)
+		dn.UpAdjustActiveVolumeCountDelta(-1)
+	}
+	dn.Unlock()
+	for _, v := range newlVolumes {
+		dn.AddOrUpdateVolume(v)
+	}
+	return
+}
+
 func (dn *DataNode) GetVolumes() (ret []storage.VolumeInfo) {
 	dn.RLock()
 	for _, v := range dn.volumes {

weed/topology/topology.go

@@ -171,7 +171,7 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 		}
 	}
 	newVolumes, deletedVolumes = dn.UpdateVolumes(volumeInfos)
-	for _, v := range volumeInfos {
+	for _, v := range newVolumes {
 		t.RegisterVolumeLayout(v, dn)
 	}
 	for _, v := range deletedVolumes {
@@ -179,3 +179,27 @@ func (t *Topology) SyncDataNodeRegistration(volumes []*master_pb.VolumeInformati
 	}
 	return
 }
+
+func (t *Topology) IncrementalSyncDataNodeRegistration(newVolumes, deletedVolumes []*master_pb.VolumeShortInformationMessage, dn *DataNode) {
+	var newVis, oldVis []storage.VolumeInfo
+	for _, v := range newVolumes {
+		vi, err := storage.NewVolumeInfoFromShort(v)
+		if err != nil {
+			glog.V(0).Infof("NewVolumeInfoFromShort %v: %v", v, err)
+			continue
+		}
+		newVis = append(newVis, vi)
+		t.RegisterVolumeLayout(vi, dn)
+	}
+	for _, v := range deletedVolumes {
+		vi, err := storage.NewVolumeInfoFromShort(v)
+		if err != nil {
+			glog.V(0).Infof("NewVolumeInfoFromShort %v: %v", v, err)
+			continue
+		}
+		oldVis = append(oldVis, vi)
+		t.UnRegisterVolumeLayout(vi, dn)
+	}
+	dn.DeltaUpdateVolumes(newVis, oldVis)
+	return
+}