[root@ceph-server ~]# rbd ls test2 -l NAME SIZE PARENT FMT PROT LOCK vol05 102400k 2 [root@ceph-server ~]# rbd snap create test2/vol05@snap1 [root@ceph-server ~]# rbd snap create test2/vol05@snap2 [root@ceph-server ~]# rbd snap create test2/vol05@snap3 [root@ceph-server ~]# rbd snap create test2/vol05@snap4 [root@ceph-server ~]# rbd snap create test2/vol05@snap5 [root@ceph-server ~]# rbd snap protect test2/vol05@snap5 [root@ceph-server ~]# rbd ls test2 -l NAME SIZE PARENT FMT PROT LOCK vol05 102400k 2 vol05@snap1 102400k 2 vol05@snap2 102400k 2 vol05@snap3 102400k 2 vol05@snap4 102400k 2 vol05@snap5 102400k 2 yes [root@ceph-server ~]# rbd snap purge test2/vol05 Removing all snapshots: 0% complete...failed. rbd: snapshot 'snap5' is protected from removal. [root@ceph-server ~]# [root@ceph-server ~]# [root@ceph-server ~]# rbd ls test2 -l NAME SIZE PARENT FMT PROT LOCK vol05 102400k 2 vol05@snap1 102400k 2 vol05@snap2 102400k 2 vol05@snap3 102400k 2 vol05@snap4 102400k 2 vol05@snap5 102400k 2 yes [root@ceph-server ~]# [root@ceph-server ~]# [root@ceph-server ~]# [root@ceph-server ~]# [root@ceph-server ~]# rbd resize vol05 --size 20 rbd: error opening image vol05: (2) No such file or directory [root@ceph-server ~]# rbd resize test2/vol05 --size 20 rbd: shrinking an image is only allowed with the --allow-shrink flag [root@ceph-server ~]# rbd resize test2/vol05 --size 200 Resizing image: 100% complete...done. [root@ceph-server ~]# rbd ls test2 -l NAME SIZE PARENT FMT PROT LOCK vol05 200M 2 vol05@snap1 102400k 2 vol05@snap2 102400k 2 vol05@snap3 102400k 2 vol05@snap4 102400k 2 vol05@snap5 102400k 2 yes [root@ceph-server ~]# rbd snap create test2/vol05@snap6 [root@ceph-server ~]# rbd snap create test2/vol05@snap7 [root@ceph-server ~]# rbd snap create test2/vol05@snap8 [root@ceph-server ~]# rbd snap create test2/vol05@snap9 [root@ceph-server ~]# rbd ls test2 -l NAME SIZE PARENT FMT PROT LOCK vol05 200M 2 vol05@snap1 102400k 2 vol05@snap2 102400k 2 vol05@snap3 102400k 2 vol05@snap4 102400k 2 vol05@snap5 102400k 2 yes vol05@snap6 200M 2 vol05@snap7 200M 2 vol05@snap8 200M 2 vol05@snap9 200M 2 [root@ceph-server ~]# rbd snap purge test2/vol05 Removing all snapshots: 0% complete...failed. rbd: snapshot 'snap5' is protected from removal. [root@ceph-server ~]#