Hello, Openstack cinder is disable multi-attach volume for rbd backend, here is the link https://bugs.launchpad.net/cinder/+bug/1535815. I do not very understand which feature need to be checked as described in that link. And what's the impact if that features turned on on cinder multi-attach volumes. Thanks a lot. -- 谦谦君子 -- 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