Dear all, I have a rbd image that I can't delete. It contains a snapshot that is "busy"
# rbd --pool openstack-images rm 2383ba62-b7ab-4964-a776-fb3f3723aabe-deleted 2014-03-04 14:02:04.062099 7f340b2d5760 -1 librbd: image has snapshots - not removing Removing image: 0% complete...failed. rbd: image has snapshots - these must be deleted with 'rbd snap purge' before the image can be removed. # rbd --pool openstack-images snap purge 2383ba62-b7ab-4964-a776-fb3f3723aabe-deleted Removing all snapshots: 0% complete...failed. rbd: removing snaps failed: (16) Device or resource busy 2014-03-04 14:03:27.311437 7f1991622760 -1 librbd: removing snapshot from header failed: (16) Device or resource busy Question, how do I found out what is accessing this snapshot? Running the same command with --debug-rbd 20 --debug-ms 1 shows the following 2014-03-04 13:57:27.664394 7fde6fe9a760 1 -- 192.168.116.24:0/1022718 --> 192.168.116.24:6806/2328 -- osd_op(client.15303529.0:9 rbd_header.182314483bf74 [call rbd.snapshot_remove] 10.ffd20474 e21337) v4 -- ?+0 0x1e5b9f0 con 0x1e5c940 2014-03-04 13:57:27.665500 7fde69ee7700 1 -- 192.168.116.24:0/1022718 <== osd.1 192.168.116.24:6806/2328 6 ==== osd_op_reply(9 rbd_header.182314483bf74 [call] v0'0 uv0 ondisk = -16 (Device or resourRemoving all snapshots: 0% complete...failed.7fde40001080 con 0x1e5c940 Can anyone explain? - WP
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