* filesystem issues after abrupt powerloss.
@ 2020-08-12 5:16 kenneth topp
0 siblings, 0 replies; only message in thread
From: kenneth topp @ 2020-08-12 5:16 UTC (permalink / raw)
To: linux-btrfs
greetings,
my btrfs on luks device is having troubles again. I believe the system
abruptly powerdown due to heat.
I believe my backups are in good order. Does anyone have any
suggestions how to recover this filesystem by running a check --repair
or scrub? Should I trust such a recovery or just recreate the
filesystem from backups.
Are there any other debugging commands I can run to provide more
information?
Are there any known defects in the filesystem that would explain how
this filesystem got so corrupt?
relevent part of dmesg:
[ 1381.291103] BTRFS warning (device dm-22): 'recovery' is deprecated,
use 'usebackuproot' instead
[ 1381.291104] BTRFS info (device dm-22): trying to use backup root at
mount time
[ 1381.291105] BTRFS info (device dm-22): using free space tree
[ 1381.291106] BTRFS info (device dm-22): has skinny extents
[ 1488.716374] BTRFS info (device dm-22): checking UUID tree
[ 1520.983660] BTRFS error (device dm-22): parent transid verify failed
on 19934974361600 wanted 675675 found 675394
[ 1520.984138] BTRFS error (device dm-22): parent transid verify failed
on 19934974361600 wanted 675675 found 675394
[ 1520.984151] BTRFS: error (device dm-22) in __btrfs_free_extent:3080:
errno=-5 IO failure
[ 1520.984157] BTRFS info (device dm-22): forced readonly
[ 1520.984163] BTRFS: error (device dm-22) in
btrfs_run_delayed_refs:2188: errno=-5 IO failure
rest of diagnostics
# uname -a
Linux static.myhost 5.4.52-100.fc32.x86_64 #1 SMP Thu Jul 16 12:00:22
EDT 2020 x86_64 x86_64 x86_64 GNU/Linux
# btrfs --version
btrfs-progs v5.7
# btrfs fi show
Label: 't2' uuid: ce50d21c-7727-4a53-b804-d02480643dfa
Total devices 2 FS bytes used 640.00KiB
devid 1 size 447.13GiB used 2.01GiB path /dev/mapper/cprt-30
devid 2 size 447.13GiB used 2.01GiB path /dev/mapper/cprt-31
Label: 'btm' uuid: 0a5b42a7-0e39-48fa-be1f-4aa29bc323f2
Total devices 2 FS bytes used 27.34TiB
devid 1 size 14.55TiB used 13.70TiB path /dev/mapper/cprt-50
devid 2 size 14.55TiB used 13.70TiB path /dev/mapper/cprt-53
# btrfs fi df /mnt
Data, single: total=27.31TiB, used=27.30TiB
System, RAID1: total=32.00MiB, used=2.88MiB
Metadata, RAID1: total=47.00GiB, used=46.72GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
thanks,
ken
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