add logging

go/storage/volume_vacuum.go

@@ -38,6 +38,7 @@ func (v *Volume) commitCompact() error {
 	}
 	//glog.V(3).Infof("Pretending to be vacuuming...")
 	//time.Sleep(20 * time.Second)
+	glog.V(3).Infof("Loading Commit file...")
 	if e = v.load(true, false, v.needleMapKind); e != nil {
 		return e
 	}