volume: follow compactionBytePerSecond

related to https://github.com/chrislusf/seaweedfs/issues/1108

weed/command/backup.go

@@ -119,7 +119,7 @@ func runBackup(cmd *Command, args []string) bool {
 	}
 
 	if v.SuperBlock.CompactionRevision < uint16(stats.CompactRevision) {
-		if err = v.Compact2(30 * 1024 * 1024 * 1024); err != nil {
+		if err = v.Compact2(30*1024*1024*1024, 0); err != nil {
 			fmt.Printf("Compact Volume before synchronizing %v\n", err)
 			return true
 		}

weed/command/compact.go

@@ -50,7 +50,7 @@ func runCompact(cmd *Command, args []string) bool {
 			glog.Fatalf("Compact Volume [ERROR] %s\n", err)
 		}
 	} else {
-		if err = v.Compact2(preallocate); err != nil {
+		if err = v.Compact2(preallocate, 0); err != nil {
 			glog.Fatalf("Compact Volume [ERROR] %s\n", err)
 		}
 	}