On Tue, Aug 23, 2011 at 03:27:27PM +0100, Hugo Mills wrote: > On Tue, Aug 23, 2011 at 05:15:46PM +0300, Avi Kivity wrote: > > I've been using btrfs for a while as my /home (converted from ext4; > > encrypted lvm) when it died on me. Mounting it crashes immediately, > > here's a log: > [...] > > [ 6.456117] Call Trace: > > [ 6.456117] [<ffffffffa005646e>] add_inode_ref+0x2e6/0x37c [btrfs] > > [ 6.456117] [<ffffffffa00493f6>] ? read_extent_buffer+0xc3/0xe3 [btrfs] > > [ 6.456117] [<ffffffffa0056e14>] replay_one_buffer+0x197/0x212 [btrfs] > > [ 6.456117] [<ffffffffa0054e94>] walk_down_log_tree+0x15a/0x2c1 [btrfs] > > [ 6.456117] [<ffffffffa005507a>] walk_log_tree+0x7f/0x19e [btrfs] > > [ 6.456117] [<ffffffff8123a8d9>] ? radix_tree_lookup+0xb/0xd > > [ 6.456117] [<ffffffffa0058148>] btrfs_recover_log_trees+0x28b/0x298 > > [btrfs] > > [ 6.456117] [<ffffffffa0056c7d>] ? replay_one_dir_item+0xbd/0xbd [btrfs] > > [ 6.456117] [<ffffffffa002a192>] open_ctree+0x10f1/0x13ff [btrfs] > [...] > > Tried btrfsck, immediate segfault. > > Yes, it does that,I'm afraid. (It also doesn't fix anything). > > > Both kernel and btrfsprogs are stock Fedora 15. I still have the > > logical volume and would like to recover it. Its fairly easy to try > > out things in a virtual machine, so if you have a patch you want me to > > try out, I'm here. > > It looks like you've got a corrupt log tree. The quick and easy fix > for that is on the wiki in the problem FAQ page [1].
... or use Josef's fix first. :) H. > Could you give a bit more information about what happened in the > crash immediately prior to the FS being unmountable, and how your > storage is configured? > > Hugo. > > [1] > https://btrfs.wiki.kernel.org/index.php/Problem_FAQ#I_can.27t_mount_my_filesystem.2C_and_I_get_a_kernel_oops.21 > -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- You stay in the theatre because you're afraid of having no --- money? There's irony...
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