From 1384529eb745b7d78153daf9e1dd1a51d225a621 Mon Sep 17 00:00:00 2001
From: chrislu <chris.lu@gmail.com>
Date: Thu, 14 Apr 2022 13:35:01 -0700
Subject: [PATCH] Fix filer.backup deletes files in backup folder in
 incremental mode

fix https://github.com/chrislusf/seaweedfs/issues/2919
---
 weed/command/filer_sync.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index 37ce2aa73..e3d3b97bc 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -267,7 +267,10 @@ func genProcessFunction(sourcePath string, targetPath string, dataSink sink.Repl
 				return nil
 			}
 			key := buildKey(dataSink, message, targetPath, sourceOldKey, sourcePath)
-			return dataSink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
+			if !dataSink.IsIncremental() {
+				return dataSink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
+			}
+			return nil
 		}
 
 		// handle new entries