On Thu, Nov 11, 2010 at 09:32:06PM +0100, Goffredo Baroncelli wrote: > On Thursday, 11 November, 2010, Josh Berry wrote: > > Hi, > > > > I have a cron script that runs periodically, taking new snapshots and > > cleaning up old ones when space gets low on my filesystem. This > > morning, the script suddenly stopped being able to remove snapshots. > > When I tried to remove one manually, I got the following: > > > > # btrfs subvol del 2010-11-07-01:17:01 > > Delete subvolume '/btrfs/snapshot/2010-11-07-01:17:01' > > ERROR: cannot delete '/btrfs/snapshot/2010-11-07-01:17:01' > > > > There is nothing in dmesg or in the above output to tell me what the > > problem is, how to fix it, etc. I'm running kernel 2.6.36, and I > > updated btrfs-progs-unstable to the lastest Git revision > > (1b444cd2e6...), with the same result. > > > > How do I diagnose this issue? I'm not even sure where to start. > > This error is due to a failure during the ioctl. Could you "strace" btrfs > subvolume delete ? > > # strace btrfs subvolume delete /btrfs/snapshot/2010-11-07-01:17:01 > > Definetely we need a more verbose error handling, about the return of the > ioctl.
I've made a good start on doing that. I'll try to finish it off over the weekend. Hugo. -- === Hugo Mills: h...@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- The future isn't what it used to be. ---
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