Add optional admin port to volume server, to seperate admin operations from normal file operations.

go/weed/server.go

@@ -64,6 +64,7 @@ var (
 	masterConfFile                = cmdServer.Flag.String("master.conf", "/etc/weedfs/weedfs.conf", "xml configuration file")
 	masterDefaultReplicaPlacement = cmdServer.Flag.String("master.defaultReplicaPlacement", "000", "Default replication type if not specified.")
 	volumePort                    = cmdServer.Flag.Int("volume.port", 8080, "volume server http listen port")
+	volumeAdminPort               = cmdServer.Flag.Int("volume.port.admin", 0, "volume server admin port to talk with master and other volume servers")
 	volumeDataFolders             = cmdServer.Flag.String("dir", os.TempDir(), "directories to store data files. dir[,dir]...")
 	volumeMaxDataVolumeCounts     = cmdServer.Flag.String("volume.max", "7", "maximum numbers of volumes, count[,count]...")
 	volumePulse                   = cmdServer.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats")
@@ -225,7 +226,9 @@ func runServer(cmd *Command, args []string) bool {
 	volumeWait.Wait()
 	time.Sleep(100 * time.Millisecond)
 	r := http.NewServeMux()
-	volumeServer := weed_server.NewVolumeServer(r, r, *serverIp, *volumePort, *serverPublicIp, folders, maxCounts,
+	volumeServer := weed_server.NewVolumeServer(r, r,
+		*serverIp, *volumePort, *volumeAdminPort, *serverPublicIp,
+		folders, maxCounts,
 		*serverIp+":"+strconv.Itoa(*masterPort), *volumePulse, *serverDataCenter, *serverRack,
 		serverWhiteList, *volumeFixJpgOrientation,
 	)