ceph at ceph-admin:~$ rbd info
cloudstack/20fcd781-2423-436e-afc6-21e75d85111d | grep prefix
block_name_prefix: rbd_data.50f613006c83e
ceph at ceph-admin:~$ rados -p cloudstack listwatchers
rbd_header.50f613006c83e
watcher=10.x.x.23:0/10014542 client.728679 cookie=1
watcher=10.x.x.23:0/11014542 client.769347 cookie=1
watcher=10.x.x.23:0/12014542 client.1100595 cookie=1
watcher=10.x.x.23:0/13014542 client.1188066 cookie=1
watcher=10.x.x.23:0/14014542 client.1271058 cookie=1
Rebooted 10.x.x.23
ceph at ceph-admin:~$ rbd rm
cloudstack/20fcd781-2423-436e-afc6-21e75d85111d
Removing image: 100% complete...done.
