Hi,

If there is some partition size change after filesystem created,
'btrfs filesystem resize max' will help.

See also
https://lore.kernel.org/linux-btrfs/42d37a6393db7ad5d83bc167459c8a5c@steev.me.uk/T/#t (local)


Best Regards
Wang Yugui (wangyugui@e16-tech.com)
2021/03/12

Hello,

I have observed this error messages in systemd journal:
BTRFS error (device sda1): bdev /dev/sdb1 errs: wr 2702175, rd 2719033,
flush 0, corrupt 6, gen 0

Here are the bottom lines of journalctl -xb:
?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=524288, want=497859712,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=524288, want=497859840,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=256, want=497859704,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719033, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=256, want=497859720,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=524288, want=497859968,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719034, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=256, want=497859728,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=256, want=497859712,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719035, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=524288, want=497860096,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719036, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=256, want=497859736,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: attempt to access beyond end of device
???????????????????????????????????? sdb1: rw=256, want=497859848,
limit=496091703
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719037, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719038, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719039, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719040, flush 0, corrupt 6, gen 0
M?r 12 08:30:41 pc1-desktop kernel: BTRFS error (device sda1): bdev
/dev/sdb1 errs: wr 2702175, rd 2719041, flush 0, corrupt 6, gen 0


I have configured a multidrive setup with 2 identical SSDs.

[root@pc1-desktop ~]# uname -a
Linux pc1-desktop 5.10.22-2-lts #1 SMP Wed, 10 Mar 2021 10:30:57 +0000
x86_64 GNU/Linux
[root@pc1-desktop ~]# btrfs --version
btrfs-progs v5.11
[root@pc1-desktop ~]# btrfs fi show
Label: 'archlinux'? uuid: 78462a70-55ad-4444-9d91-e71e42cce51c
??? Total devices 2 FS bytes used 178.93GiB
??? devid??? 1 size 236.55GiB used 233.50GiB path /dev/sda1
??? devid??? 2 size 238.47GiB used 233.50GiB path /dev/sdb1

Label: 'backup'? uuid: de094dc0-58b7-4931-b948-4b920495bf94
??? Total devices 1 FS bytes used 210.97GiB
??? devid??? 1 size 232.89GiB used 228.87GiB path /dev/sdd

[root@pc1-desktop ~]# btrfs fi df /
Data, RAID1: total=229.47GiB, used=175.82GiB
System, RAID1: total=32.00MiB, used=64.00KiB
Metadata, RAID1: total=4.00GiB, used=3.11GiB
GlobalReserve, single: total=512.00MiB, used=0.00B


Can you please advise how to fix these errors?


Regards
Thomas