I've read the entire thread "Oops while rebalancing, now unmountable."
and it ended without any information about repairing the fs. (the web
page wouldn't let me post a reply to that thread tho.)
Has there been any info? The fs was working fine until I rebooted.
thanks for any info!
--jeff
root@aurora:~/btrfs-progs-unstable# uname -a
Linux aurora 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09
UTC 2011 i686 i686 i386 GNU/Linux
root@aurora:~/btrfs-progs-unstable# mount -t btrfs -r -o
defaults,relatime,compress,space_cache /dev/dm-0 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/mapper/put--vg-put,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
root@aurora:~/btrfs-progs-unstable# dmesg |tail -6
[33472.371273] device label putBtrfs devid 1 transid 519691
/dev/mapper/put--vg-put
[33472.373079] btrfs: use zlib compression
[33472.373083] btrfs: enabling disk space caching
[33478.399721] btrfs: dm-0 checksum verify failed on 12883853500416
wanted 9E7E27F5 found CC775767 level 0
[33478.399733] Failed to read block groups: -5
[33478.420497] btrfs: open_ctree failed
root@aurora:~/btrfs-progs-unstable# ./btrfsck -s 0 /dev/dm-0
using SB copy 0, bytenr 65536
checksum verify failed on 12883853500416 wanted CC775767 found FFFFFFF5
Segmentation fault
root@aurora:~/btrfs-progs-unstable# ./btrfsck -s 1 /dev/dm-0
using SB copy 1, bytenr 67108864
checksum verify failed on 12883853500416 wanted CC775767 found FFFFFFF5
Segmentation fault
root@aurora:~/btrfs-progs-unstable# ./btrfsck -s 2 /dev/dm-0
using SB copy 2, bytenr 274877906944
checksum verify failed on 12883853500416 wanted CC775767 found FFFFFFF5
Segmentation fault
root@aurora:~/btrfs-progs-unstable# ./btrfsck -s 3 /dev/dm-0
using SB copy 3, bytenr 1125899906842624
No valid Btrfs found on /dev/dm-0
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