On Wed, May 14, 2014 at 08:43:41PM +0200, laie wrote: > On 2014-05-11 16:19, Hugo Mills wrote: > >On Tue, May 13, 2014 at 10:16:59AM +0200, laie wrote: > >>On 2014-05-09 20:01, Hugo Mills wrote: > >>>On Fri, May 09, 2014 at 06:58:27PM +0100, Hugo Mills wrote: > >>>>On Fri, May 09, 2014 at 08:02:45PM +0200, laie wrote: > >>>>> Now I'm looking for a way to tell btrfs to provide me with a list of the > >>>>> corrupted files and delete them afterwards. This would be great, because > >>>>> otherwise it would take very long to get the data back from slow backups. > >>>> > >>>> Simple solution: cat every file to /dev/null, and see which ones > >>>>fail with an I/O error. With RAID-0 data, losing a device is going to > >>>>damage most files, though, so don't necessarily expect much to survive. > > I finished building the List, about 40% of the Data is gone. So far so good. > > As next step I planned to delete these files. This is not possible because > I'm not able to mount the fs r/w. > > btrfs: allowing degraded mounts > btrfs: bdev /dev/mapper/luks-0 errs: wr 37519, rd 32783, flush 0, corrupt 0, > gen 0 > Btrfs: too many missing devices, writeable mount is not allowed > btrfs: open_ctree failed > > Is it correct remove the missing device now: > > btrfs device delete missing /mnt > > Or do I have to add the replacement first? You'd have to mount r/w before you can add a new disk. :) You should be able to mount r/w using the -o degraded mount option. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- Attempted murder, now honestly, what is that? Do they give a --- Nobel Prize for attempted chemistry?
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