[root@hulk ~]# rbd rm main
2016-07-19 18:49:11.828501 7fcfe556f760 -1 librbd::ImageCtx: error finding header: (2) No such file or directory
Removing image: 100% complete...done.
[root@hulk ~]# rbd create bar --size 15728640 -m 192.168.127.12 -k /etc/ceph/ceph.client.admin.keyring
[root@hulk ~]# rbd map bar --name client.admin -m 192.168.127.12 -k /etc/ceph/ceph.client.admin.keyring
/dev/rbd0
[root@hulk ~]# rbd locck remove ^C
[root@hulk ~]# rbs ls
-bash: rbs: command not found
[root@hulk ~]# rbd ls
bar
[root@hulk ~]# rbd info bar
rbd image 'bar':
        size 15360 GB in 3932160 objects
        order 22 (4096 kB objects)
        block_name_prefix: rb.0.88e30.238e1f29
        format: 1
[root@hulk ~]# rbd lock remove bar
rbd: lock id was not specified
[root@hulk ~]# rbd info mypool/bar
rbd: error opening pool mypool: (2) No such file or directory
[root@hulk ~]# rbd lock remove bar^C
[root@hulk ~]# mkfs.ext4 -m0 /dev/rbd/rbd/bar
mke2fs 1.41.12 (17-May-2010)
Discarding device blocks: