Hi experts,
I met a problem that after flattening the children image, snapshot still
can not be unprotected.
Detail infos are as following:
ubuntu@devstack-ntse:~$ rbd snap unprotect
vms/9bec1605-816b-4e6f-b393-eb44d214c21d_disk@20d41cdcbc184d09834c850ec68965af
2015-11-19 12:53:09.146001 7f6c48c507c0 -1 librbd: snap_unprotect: can't
unprotect; at least 1 child(ren) in pool images
rbd: unprotecting snap failed: (16) Device or resource busy
ubuntu@devstack-ntse:~$ rbd children
vms/9bec1605-816b-4e6f-b393-eb44d214c21d_disk@20d41cdcbc184d09834c850ec68965af
images/0a38b10d-2184-40fc-82b8-8bbd459d62d2
ubuntu@devstack-ntse:~$ rbd info images/0a38b10d-2184-40fc-82b8-8bbd459d62d2
rbd image '0a38b10d-2184-40fc-82b8-8bbd459d62d2':
size 20480 MB in 2560 objects
order 23 (8192 kB objects)
block_name_prefix: rbd_data.1819051b1183ad
format: 2
features: layering, striping
stripe unit: 4096 kB
stripe count: 1
What's the problem?
Regards,
Jackie
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