diff --git a/weed/topology/allocate_volume.go b/weed/topology/allocate_volume.go
index e1ae30c2d..f21d0fc0a 100644
--- a/weed/topology/allocate_volume.go
+++ b/weed/topology/allocate_volume.go
@@ -17,7 +17,7 @@ func AllocateVolume(dn *DataNode, grpcDialOption grpc.DialOption, vid needle.Vol
 
 	return operation.WithVolumeServerClient(false, dn.ServerAddress(), grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
 
-		_, deleteErr := client.AllocateVolume(context.Background(), &volume_server_pb.AllocateVolumeRequest{
+		_, allocateErr := client.AllocateVolume(context.Background(), &volume_server_pb.AllocateVolumeRequest{
 			VolumeId:           uint32(vid),
 			Collection:         option.Collection,
 			Replication:        option.ReplicaPlacement.String(),
@@ -26,7 +26,7 @@ func AllocateVolume(dn *DataNode, grpcDialOption grpc.DialOption, vid needle.Vol
 			MemoryMapMaxSizeMb: option.MemoryMapMaxSizeMb,
 			DiskType:           string(option.DiskType),
 		})
-		return deleteErr
+		return allocateErr
 	})
 
 }
diff --git a/weed/topology/volume_growth.go b/weed/topology/volume_growth.go
index e2949848d..7886c3998 100644
--- a/weed/topology/volume_growth.go
+++ b/weed/topology/volume_growth.go
@@ -181,7 +181,7 @@ func (vg *VolumeGrowth) findEmptySlotsForOneVolume(topo *Topology, option *Volum
 		return nil, rackErr
 	}
 
-	//find main rack and other racks
+	//find main server and other servers
 	mainServer, otherServers, serverErr := mainRack.(*Rack).PickNodesByWeight(rp.SameRackCount+1, option, func(node Node) error {
 		if option.DataNode != "" && node.IsDataNode() && node.Id() != NodeId(option.DataNode) {
 			return fmt.Errorf("Not matching preferred data node:%s", option.DataNode)