diff --git a/weed/storage/store.go b/weed/storage/store.go
index e64dd8fab..83c40a01a 100644
--- a/weed/storage/store.go
+++ b/weed/storage/store.go
@@ -225,8 +225,7 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 				}
 				if v.lastIoError != nil {
 					deleteVids = append(deleteVids, v.Id)
-				} else {
-					glog.Warningf("volume %d has IO error", v.Id)
+					glog.Warningf("volume %d has IO error: %v", v.Id, v.lastIoError)
 				}
 			}
 			collectionVolumeSize[v.Collection] += volumeMessage.Size
diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index c726e7f11..7712c5eda 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -205,9 +205,9 @@ func (v *Volume) expired(contentSize uint64, volumeSizeLimit uint64) bool {
 	if v.Ttl == nil || v.Ttl.Minutes() == 0 {
 		return false
 	}
-	glog.V(2).Infof("now:%v lastModified:%v", time.Now().Unix(), v.lastModifiedTsSeconds)
+	glog.V(2).Infof("volume %d now:%v lastModified:%v", v.Id, time.Now().Unix(), v.lastModifiedTsSeconds)
 	livedMinutes := (time.Now().Unix() - int64(v.lastModifiedTsSeconds)) / 60
-	glog.V(2).Infof("ttl:%v lived:%v", v.Ttl, livedMinutes)
+	glog.V(2).Infof("volume %d ttl:%v lived:%v", v.Id, v.Ttl, livedMinutes)
 	if int64(v.Ttl.Minutes()) < livedMinutes {
 		return true
 	}