fix progress step

app/modules/filemanager/storages/smb.py

@@ -39,6 +39,9 @@ class SMB(StorageBase, metaclass=WeakSingleton):
         "copy": "复制",
     }
 
+    # 文件块大小，默认100MB
+    chunk_size = 100 * 1024 * 1024
+
     def __init__(self):
         super().__init__()
         self._connected = False
@@ -433,12 +436,9 @@ class SMB(StorageBase, metaclass=WeakSingleton):
             # 使用更高效的文件传输方式
             with smbclient.open_file(smb_path, mode="rb") as src_file:
                 with open(local_path, "wb") as dst_file:
-                    # 使用更大的缓冲区提高性能
-                    buffer_size = 1024 * 1024  # 1MB
                     downloaded_size = 0
-
                     while True:
-                        chunk = src_file.read(buffer_size)
+                        chunk = src_file.read(self.chunk_size)
                         if not chunk:
                             break
                         dst_file.write(chunk)
@@ -483,12 +483,9 @@ class SMB(StorageBase, metaclass=WeakSingleton):
             # 使用更高效的文件传输方式
             with open(path, "rb") as src_file:
                 with smbclient.open_file(smb_path, mode="wb") as dst_file:
-                    # 使用更大的缓冲区提高性能
-                    buffer_size = 1024 * 1024  # 1MB
                     uploaded_size = 0
-
                     while True:
-                        chunk = src_file.read(buffer_size)
+                        chunk = src_file.read(self.chunk_size)
                         if not chunk:
                             break
                         dst_file.write(chunk)