| 摘要 |
Methods and systems are provided for providing concurrency control over remotely- stored data that may be shared across multiple clients via virtual drives. To prevent data corruption that may result from multiple clients concurrently modifying the same file, metadata indicative of a file's locking status may be stored at the remote storage. Existence of such metadata may be checked by a client intending to access the file so that no conflicting sharing permissions may be granted to the same file by different clients. Furthermore, to prevent data corruption that may result from the synchronization of multiple offline copies of a remotely-stored file, a client may be configured to determine, before uploading its offline copy to the remote storage, whether the online file has been modified. If so, the offline copy may be renamed with a unique name before being uploaded to avoid overwriting changes made by others. |
