rename backup to local_incremental and use mtime

weed/replication/sink/backupsink/backup_sink.go

@@ -1,18 +0,0 @@
-package backupsink
-
-import (
-	"github.com/chrislusf/seaweedfs/weed/replication/sink"
-	"github.com/chrislusf/seaweedfs/weed/replication/sink/localsink"
-)
-
-type BackupSink struct {
-	localsink.LocalSink
-}
-
-func (backupsink *BackupSink) GetName() string {
-	return "backup"
-}
-
-func init() {
-	sink.Sinks = append(sink.Sinks, &BackupSink{})
-}

weed/replication/sink/localincrementalsink/local_incremental_sink.go

@@ -0,0 +1,18 @@
+package localincrementalsink
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/replication/sink"
+	"github.com/chrislusf/seaweedfs/weed/replication/sink/localsink"
+)
+
+type LocalIncSink struct {
+	localsink.LocalSink
+}
+
+func (localincsink *LocalIncSink) GetName() string {
+	return "local_incremental"
+}
+
+func init() {
+	sink.Sinks = append(sink.Sinks, &LocalIncSink{})
+}