add option to redirect moved or non-local volumes

fix https://github.com/chrislusf/seaweedfs/issues/168

go/weed/volume.go

@@ -35,6 +35,7 @@ type VolumeServerOptions struct {
 	whiteList             []string
 	indexType             *string
 	fixJpgOrientation     *bool
+	readRedirect          *bool
 }
 
 func init() {
@@ -52,6 +53,7 @@ func init() {
 	v.rack = cmdVolume.Flag.String("rack", "", "current volume server's rack name")
 	v.indexType = cmdVolume.Flag.String("index", "memory", "Choose [memory|leveldb|boltdb] mode for memory~performance balance.")
 	v.fixJpgOrientation = cmdVolume.Flag.Bool("images.fix.orientation", true, "Adjust jpg orientation when uploading.")
+	v.readRedirect = cmdVolume.Flag.Bool("read.redirect", true, "Redirect moved or non-local volumes.")
 }
 
 var cmdVolume = &Command{
@@ -129,7 +131,7 @@ func runVolume(cmd *Command, args []string) bool {
 		volumeNeedleMapKind,
 		*v.master, *v.pulseSeconds, *v.dataCenter, *v.rack,
 		v.whiteList,
-		*v.fixJpgOrientation,
+		*v.fixJpgOrientation, *v.readRedirect,
 	)
 
 	listeningAddress := *v.bindIp + ":" + strconv.Itoa(*v.port)