Re: kernel BUG at fs/btrfs/extent-tree.c:8113! (4.1.3 kernel)

[Marc MERLIN <marc@merlins.org>]

On Mon, Aug 24, 2015 at 01:11:26PM +0800, Qu Wenruo wrote:
> So, my last bet will be, using "btrfs-find-root -a" to find the root
> with highest generation, and use the new root to exec "btrfsck -b
> <bytenr of highest gen root>".
 
> The latest btrfs-find-root would output possible tree root by
> descending order of its generation. You'll find proper bytenr quite
> easy.
> But be prepared as "btrfs-find-root -a" will iterate all metadata
> space, so it will takes a long long time to finish.
> And until it scanned all the space, it won't output anything.

This is what I got:

myth:~# btrfs-find-root -a /dev/mapper/crypt_sdd1
Superblock thinks the generation is 39538
Superblock thinks the level is 1
Well block 4243456(gen: 3 level: 0) seems good, but generation/level doesn't match, want gen: 39538 level: 1
Well block 4194304(gen: 2 level: 0) seems good, but generation/level doesn't match, want gen: 39538 level: 1
myth:~# 

Does it mean there is no other block I can/should use?

Thanks,
Marc
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Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901