ceph at ceph-admin:~$ rbd snap purge cloudstack/20fcd781-2423-436e-afc6-21e75d85111d Removing all snapshots: 100% complete...done. ceph at ceph-admin:~$ rbd rm cloudstack/20fcd781-2423-436e-afc6-21e75d85111d Removing image: 99% complete...failed. rbd: error: image still has watchers This means the image is still open or the client using it crashed. Try again after closing/unmapping it or waiting 30s for the crashed client to timeout. 2014-05-08 15:58:14.598199 7fd078915760 -1 librbd: error removing header: (16) Device or resource busy Please, how can I delete this volume? From the error I'd say the client has crashed, as nothing should be using it. Regards, Jon