From f911bf2995f6754f865724ff168b200eed353339 Mon Sep 17 00:00:00 2001
From: gaojianda <15731133699@163.com>
Date: Mon, 8 Jun 2026 11:23:49 +0800
Subject: [PATCH] Using Path.replace() calls os.rename() under the hood, which
 fails with [Errno 18] Invalid cross-device link when /tmp and the media
 directory are on different mount points (common in Docker environments).

Replace with shutil.move() which gracefully falls back to copy+delete
when moving across devices."
---
 labelu/internal/common/storage.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/labelu/internal/common/storage.py b/labelu/internal/common/storage.py
index fe797c2c..4f1f0370 100644
--- a/labelu/internal/common/storage.py
+++ b/labelu/internal/common/storage.py
@@ -2,6 +2,7 @@
 
 from abc import ABC, abstractmethod
 from functools import lru_cache
+import shutil
 from pathlib import Path
 from typing import Optional
 
@@ -60,7 +61,7 @@ def _resolve(self, key: str) -> Path:
     def save_file(self, local_path: Path, key: str, content_type: Optional[str] = None) -> None:
         target_path = self._resolve(key)
         target_path.parent.mkdir(parents=True, exist_ok=True)
-        local_path.replace(target_path)
+        shutil.move(str(local_path), str(target_path))
 
     def save_bytes(self, content: bytes, key: str, content_type: Optional[str] = None) -> None:
         target_path = self._resolve(key)