# rbd rm --pool cinder volume-3e68a46d-9c14-4256-bbae-cd981a2fc0bd
Removing image: 99% complete...failed.
delete error: (2) No such file or directory

2012-12-10 13:35:24.714538 7f523d565780 -1 librbd: error removing child from children list
# rbd ls --pool cinder
volume-1aab1e68-550f-42ae-a76b-573ed12d60be
volume-3e68a46d-9c14-4256-bbae-cd981a2fc0bd
volume-5481e855-5112-4cca-a5ae-214f8fc11649
volume-60bfed5b-64c9-439b-a848-8f8b185d3f44
volume-72ecbb54-939b-460a-b838-f12176720a7d
volume-79ba7dd9-9ebe-493a-94b9-779090f5e84f


# rbd info --pool cinder volume-3e68a46d-9c14-4256-bbae-cd981a2fc0bd
rbd image 'volume-3e68a46d-9c14-4256-bbae-cd981a2fc0bd':
        size 10240 MB in 1280 objects
        order 23 (8192 KB objects)
        block_name_prefix: rbd_data.169d38bd92d7
        format: 2
        features: layering
        parent: images/9ccb2103-2674-4d96-9288-9251fc5ffe26@snap
        overlap: 10001 MB


# rbd flatten --pool cinder volume-3e68a46d-9c14-4256-bbae-cd981a2fc0bd
Image flatten: 99% complete...failed.
flatten error: (2) No such file or directory
2012-12-10 13:43:38.459671 7f2be3f92780 -1 librbd: error removing child from children list