On 2020-03-16 14:06, Qu Wenruo wrote:
On 2020/3/16 上午11:13, Tomasz Chmielewski wrote:
After upgrading to Linux 5.5 (tried 5.5.6, 5.5.9, also 5.6.0-rc5), the
system panics shortly after mounting and starting to use a btrfs
filesystem. Here is a dmesg - please advise how to deal with it.
It has since crashed several times, because of panic=10 parameter
(system boots, runs for a while, crashes, boots again, and so on).
Mount options:
noatime,ssd,space_cache=v2,user_subvol_rm_allowed
[ 65.777428] BTRFS info (device sda2): enabling ssd optimizations
[ 65.777435] BTRFS info (device sda2): using free space tree
[ 65.777436] BTRFS info (device sda2): has skinny extents
[ 98.225099] BTRFS error (device sda2): parent transid verify failed
on 19718118866944 wanted 664218442 found 674530371
[ 98.225594] BTRFS error (device sda2): parent transid verify failed
on 19718118866944 wanted 664218442 found 674530371
This is the root cause, not quota.
The metadata is already corrupted, and quota is the first to complain
about it.
Still, should it crash the server, putting it into a cycle of
crash-boot-crash-boot, possibly breaking the filesystem even more?
Also, how do I fix that corruption?
This server had a drive added, a full balance (to RAID-10 for data and
metadata) and scrub a few weeks ago, with no errors. Running scrub now
to see if it shows up anything.
btrfs filesystem stats also shows no errors:
# btrfs device stats /data/lxd
[/dev/sda2].write_io_errs 0
[/dev/sda2].read_io_errs 0
[/dev/sda2].flush_io_errs 0
[/dev/sda2].corruption_errs 0
[/dev/sda2].generation_errs 0
[/dev/sdd2].write_io_errs 0
[/dev/sdd2].read_io_errs 0
[/dev/sdd2].flush_io_errs 0
[/dev/sdd2].corruption_errs 0
[/dev/sdd2].generation_errs 0
[/dev/sdc2].write_io_errs 0
[/dev/sdc2].read_io_errs 0
[/dev/sdc2].flush_io_errs 0
[/dev/sdc2].corruption_errs 0
[/dev/sdc2].generation_errs 0
[/dev/sdb2].write_io_errs 0
[/dev/sdb2].read_io_errs 0
[/dev/sdb2].flush_io_errs 0
[/dev/sdb2].corruption_errs 0
[/dev/sdb2].generation_errs 0
Tomasz Chmielewski
https://lxadm.com
