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[unsolved] btrfs corruption? (lemmy.world)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

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In my dmesg logs I get following errors a lot:

[232671.710741] BTRFS warning (device nvme0n1p2): csum failed root 257 ino 2496314 off 946159616 csum 0xb7eb9798 expected csum 0x3803f9f6 mirror 1
[232671.710746] BTRFS error (device nvme0n1p2): bdev /dev/nvme0n1p2 errs: wr 0, rd 0, flush 0, corrupt 19297, gen 0
[232673.984324] BTRFS warning (device nvme0n1p2): csum failed root 257 ino 2496314 off 946159616 csum 0xb7eb9798 expected csum 0x3803f9f6 mirror 1
[232673.984329] BTRFS error (device nvme0n1p2): bdev /dev/nvme0n1p2 errs: wr 0, rd 0, flush 0, corrupt 19298, gen 0
[232673.988851] BTRFS warning (device nvme0n1p2): csum failed root 257 ino 2496314 off 946159616 csum 0xb7eb9798 expected csum 0x3803f9f6 mirror 1

I've run btrfs scrub start -Bd /home as described here. The report afterwards claim everything is fine.

btrfs scrub status /home
UUID:             145c0d63-05f8-43a2-934b-7583cb5f6100
Scrub started:    Fri Aug  4 11:35:19 2023
Status:           finished
Duration:         0:07:49
Total to scrub:   480.21GiB
Rate:             1.02GiB/s
Error summary:    no errors found

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[–] [email protected] 5 points 11 months ago (1 children)

Could you do an offline btrfs-check? (no --repair!)

[–] [email protected] 2 points 11 months ago

root@archiso ~ # lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
loop0         7:0    0   673M  1 loop /run/archiso/airootfs
sda           8:0    0 476.9G  0 disk 
└─sda1        8:1    0 476.9G  0 part 
sdb           8:16   0 119.2G  0 disk 
└─sdb1        8:17   0 119.2G  0 part 
sdc           8:32   1  14.4G  0 disk 
├─sdc1        8:33   1   778M  0 part 
└─sdc2        8:34   1    15M  0 part 
nvme0n1     259:0    0 931.5G  0 disk 
├─nvme0n1p1 259:1    0   511M  0 part 
└─nvme0n1p2 259:2    0   931G  0 part 
root@archiso ~ # btrfs check /dev/nvme0n1p2
Opening filesystem to check...
Checking filesystem on /dev/nvme0n1p2
UUID: 145c0d63-05f8-43a2-934b-7583cb5f6100
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space tree
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
found 514161029120 bytes used, no error found
total csum bytes: 496182240
total tree bytes: 1464221696
total fs tree bytes: 813809664
total extent tree bytes: 57655296
btree space waste bytes: 248053148
file data blocks allocated: 4385471590400
 referenced 512920408064
btrfs check /dev/nvme0n1p2  4.15s user 1.66s system 62% cpu 9.316 total