On 02/11/2013 05:35 AM, Wolfgang Hennerbichler wrote:
Hi, My snapshot is stuck, and I don't know how that could have happened: root@rd-c2:~# rbd snap rm rd/debian_template@snap rbd: snapshot 'snap' is protected from removal. 2013-02-11 14:30:37.935986 7f7a4a4ee780 -1 librbd: removing snapshot from header failed: (16) Device or resource busy root@rd-c2:~# rbd snap unprotect rd/debian_template@snap rbd: unprotecting snap failed: (22) Invalid argument
Can you add '--debug-rbd 20 --debug-ms 1' to that unprotect command and share the log? Also, what version of ceph is this?
When I tried to unprotect it initially it just sat there for a long time, then I killed the "unprotection" and that's where we are now. I can't find a way around the problem.
Do you have a large number of pools? Currently unprotect must check each pool for clones of the snapshot.
any help is really appreciated. Wolfgang
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