Ceph » rbd

The operation process is as follows：
root@master:~# rbd create test-pool/[0.0.0.0] --size 50G
root@master:~# rbd map test-pool/[0.0.0.0]
rbd: sysfs write failed
RBD image feature set mismatch. You can disable features unsupported by the kernel with "rbd feature disable test-pool/[0.0.0.0] object-map fast-diff deep-flatten".
In some cases useful info is found in syslog - try "dmesg | tail".
rbd: map failed: (6) No such device or address
root@master:~# rbd feature disable test-pool/[0.0.0.0] object-map fast-diff deep-flatten
root@master:~# rbd map test-pool/[0.0.0.0]
/dev/rbd1
root@master:~# rbd showmapped
id pool namespace image snap device
1 test-pool [0.0.0.0] - /dev/rbd1
root@master:~# rbd unmap test-pool/[0.0.0.0]
rbd: test-pool/[0.0.0.0]: not a mapped image or snapshot
rbd: unmap failed: (22) Invalid argument