diff --git a/weed/topology/topology_vacuum.go b/weed/topology/topology_vacuum.go
index f5b1eaaff..b1a8b66d4 100644
--- a/weed/topology/topology_vacuum.go
+++ b/weed/topology/topology_vacuum.go
@@ -270,7 +270,11 @@ func (t *Topology) vacuumOneVolumeId(grpcDialOption grpc.DialOption, volumeLayou
 	isEnoughCopies := volumeLayout.enoughCopies(vid)
 	volumeLayout.accessLock.RUnlock()
 
-	if isReadOnly || !isEnoughCopies {
+	if isReadOnly {
+		return
+	}
+	if !isEnoughCopies {
+		glog.Warningf("skip vacuuming: not enough copies for volume:%d", vid)
 		return
 	}