From 935f41bff661af3480c3cab9100a6d318a0aa7e4 Mon Sep 17 00:00:00 2001
From: Chris Lu <chrislusf@users.noreply.github.com>
Date: Fri, 26 Dec 2025 15:44:30 -0800
Subject: [PATCH] filer.backup: ignore missing volume/lookup errors when
 -ignore404Error is set (#7889)

* filer.backup: ignore missing volume/lookup errors when -ignore404Error is set (#7888)

* simplify
---
 weed/command/filer_backup.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/weed/command/filer_backup.go b/weed/command/filer_backup.go
index 996260c1e..3387fccbf 100644
--- a/weed/command/filer_backup.go
+++ b/weed/command/filer_backup.go
@@ -146,10 +146,17 @@ func doFilerBackup(grpcDialOption grpc.DialOption, backupOption *FilerBackupOpti
 			if err == nil {
 				return nil
 			}
+			// ignore HTTP 404 from remote reads
 			if errors.Is(err, http.ErrNotFound) {
 				glog.V(0).Infof("got 404 error, ignore it: %s", err.Error())
 				return nil
 			}
+			// also ignore missing volume/lookup errors coming from LookupFileId or vid map
+			errStr := err.Error()
+			if strings.Contains(errStr, "LookupFileId") || (strings.Contains(errStr, "volume id") && strings.Contains(errStr, "not found")) {
+				glog.V(0).Infof("got missing-volume error, ignore it: %s", errStr)
+				return nil
+			}
 			return err
 		}
 	} else {