add logs

weed/command/volume.go

@@ -128,6 +128,7 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 
 	if *v.ip == "" {
 		*v.ip = util.DetectedHostAddress()
+		glog.V(0).Infof("detected volume server ip address: %v", *v.ip)
 	}
 
 	if *v.publicPort == 0 {