Hi, guys RGWDataSyncShardCR will add a lock on its status oid before doing sync. The lock will re-lock itself every half duration. With a positive duration it will be released forcibly if time expires when another lock request from different client reached. Since the re-lock process is executed in the same thread with coroutine, the re-lock maybe lagging. In this situation, both RGWDataSyncShardCRs will think it owns the lock and continues to do sync. So my question is why not use a zero duration and let RGWDataSyncShardCR give up a lock on its own (it will indeed release the lock)? Thanks, Xinying. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html