Re: btrfs mount segfaults or crashes after powerloss

["Leon Meßner" <l.messner@physik.tu-berlin.de>]

On Tue, Mar 15, 2011 at 12:58:43PM -0400, Chris Mason wrote:
> Excerpts from Leon Me=DFner's message of 2011-03-14 20:28:56 -0400:
> > Hi,
> >=20
> > i'm having a problem with a damaged btrfs after power loss. When i =
try
> > to mount the fs mount either segfaults (trace at bottom) or hangs i=
n=20
> > "D" state together with [btrfs-transacti].
> >=20
> > Please CC me as i'm not an the list.
> > # btrfsck -s 1 /dev/sdb2
>=20
> Does btrfsck /dev/sdb2 work?  -s 1 selects a different super, hopeful=
ly
> all the supers are the same.  If plain btrfsck runs without failing w=
e
> can easily work around the log tree crash.

Yes it does (i think), output is below.

# btrfsck /dev/sdb2
root 256 inode 257 errors 800
found 50907959296 bytes used err is 1
total csum bytes: 46730092
total tree bytes: 407293952
total fs tree bytes: 315609088
btree space waste bytes: 111966302
file data blocks allocated: 184320000000
 referenced 56142348288
Btrfs v0.19-35-g1b444cd

thanks,
Leon
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