Ceph » rgw

when set rgw_num_rados_handles>1 and use rgw_num_async_rados_threads default 32 will cause unlock failure.

since multisite use async thread pool, so lock and unlock operation may get different threads, which may direct to different rados handles, and lock operation use client.xxxx to identify owner, different rados handles means different client, leads to unlock fail, and next lock will return locked, rgw log will show a lot of -16 error.

The old federated way also has the problem. someone have reported. http://tracker.ceph.com/issues/14081