一些文件系统支持网络客户端获取对文件的排它写锁定，以及当客户端死机时移交锁定。

Some file systems support network clients obtaining an exclusive write lock on a file and remove the lock if the client crashes.

youdao

Walrus 不提供对象的写锁定；但是由于它与 S3 一样，因此要保证如果对同一个对象并发写入，保存的是一致的对象副本。

Walrus does not provide locking for object writes; however, as is the case with S3, you are guaranteed that a consistent copy of the object is saved if there are concurrent writes to the same object.

youdao

用户可能没有输出文件的写权限，或者该文件被另一个用户锁定。

The user might not have permission to write the output file, or it might be locked by another user.

youdao