From 5d1feea7e862d135fb3452fa33e52a8bcec86b60 Mon Sep 17 00:00:00 2001
From: water <672684719@qq.com>
Date: Thu, 13 Aug 2026 21:45:47 +0800
Subject: [PATCH] fix: do not retry multipart upload chunk on 404 (upload
 session not found)

---
 backend/onedrive/onedrive.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/backend/onedrive/onedrive.go b/backend/onedrive/onedrive.go
index b454eee26..38f5bfef7 100644
--- a/backend/onedrive/onedrive.go
+++ b/backend/onedrive/onedrive.go
@@ -2681,9 +2681,8 @@ func (o *Object) uploadFragment(ctx context.Context, url string, start int64, to
 			}
 			return true, fmt.Errorf("retry this chunk skipping %d bytes: %w", skip, err)
 		} else if err != nil && resp != nil && resp.StatusCode == http.StatusNotFound {
-			fs.Debugf(o, "Received 404 error: assuming eventual consistency problem with session - retrying chunk: %v", err)
-			time.Sleep(5 * time.Second) // a little delay to help things along
-			return true, err
+			fs.Debugf(o, "Received 404 error: upload session not found - not retrying: %v", err)
+			return false, fserrors.NoLowLevelRetryError(err)
 		}
 		if err != nil {
 			return shouldRetry(ctx, resp, err)