Hello everybody,
after a recent power outage attempting to mount a my btrfs partition
fails with the following error:
mount: wrong fs type, bad option, bad superblock on /dev/sda8,
missing codepage or helper program, or other error
This is what dmesg shows:
[ 1035.236081] BTRFS (device sda8): parent transid verify failed on
410124288 wanted 85753 found 85755
[ 1035.240756] BTRFS (device sda8): parent transid verify failed on
410124288 wanted 85753 found 85755
[ 1035.240780] BTRFS: failed to read tree root on sda8
[ 1035.252025] BTRFS: open_ctree failed
Below is the result of btrfs check:
Checking filesystem on /dev/sda8
UUID: b0486700-ff9f-4979-8735-257ff1428a0d
checking extents
checking free space cache
checking fs roots
checking csums
checking root refs
found 311702978854 bytes used err is 0
total csum bytes: 271057636
total tree bytes: 1859862528
total fs tree bytes: 1473953792
total extent tree bytes: 72876032
btree space waste bytes: 377740163
file data blocks allocated: 11278336921600
referenced 975937630208
btrfs-progs v4.0
I tried googling the "open_ctree failed" error, but couldn't find any
definite answers. Here's some additional info:
uname -a:
Linux Computer 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC
2015 x86_64 x86_64 x86_64 GNU/Linux
btrfs fi show:
Label: none uuid: b0486700-ff9f-4979-8735-257ff1428a0d
Total devices 1 FS bytes used 290.37GiB
devid 1 size 301.32GiB used 295.04GiB path /dev/sda8
Thanks in advance for any help,
Radek
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