1st time csum error is detected during device remove:

[40196.027132] BTRFS info (device dm-6): relocating block group 46227415695360 flags 1
[40200.339934] BTRFS warning (device dm-6): csum failed ino 1501 off 662048768 csum 1587343192 expected csum 932567088
[40200.358589] BTRFS warning (device dm-6): csum failed ino 1501 off 662048768 csum 1587343192 expected csum 932567088


Additional ~40 runs of device remove:

[40683.366361] BTRFS info (device dm-6): relocating block group 46227415695360 flags 1
[40689.042033] BTRFS warning (device dm-6): csum failed ino 1502 off 662048768 csum 1587343192 expected csum 932567088
[40689.060719] BTRFS warning (device dm-6): csum failed ino 1502 off 662048768 csum 1587343192 expected csum 932567088

...

[41872.688703] BTRFS info (device dm-6): relocating block group 46227415695360 flags 1
[41878.242959] BTRFS warning (device dm-6): csum failed ino 1540 off 662048768 csum 1587343192 expected csum 932567088
[41878.250900] BTRFS warning (device dm-6): csum failed ino 1540 off 662048768 csum 1587343192 expected csum 932567088


scrub:

[51207.342360] BTRFS warning (device dm-6): checksum error at logical 46228077744128 on dev /dev/mapper/crypt_sdk1, sector 3131104392, root 5, inode 141388, offset 1186074624, length 4096, links 1 (path: path/file.ext)
[51207.342364] BTRFS error (device dm-6): bdev /dev/mapper/crypt_sdk1 errs: wr 0, rd 0, flush 0, corrupt 6, gen 0
[51207.342379] BTRFS error (device dm-6): unable to fixup (regular) error at logical 46228077744128 on dev /dev/mapper/crypt_sdk1
[51207.347328] BTRFS warning (device dm-6): checksum error at logical 46228077748224 on dev /dev/mapper/crypt_sdk1, sector 3131104400, root 5, inode 141388, offset 1186078720, length 4096, links 1 (path: path/file.ext)
[51207.347332] BTRFS error (device dm-6): bdev /dev/mapper/crypt_sdk1 errs: wr 0, rd 0, flush 0, corrupt 7, gen 0
[51207.347347] BTRFS error (device dm-6): unable to fixup (regular) error at logical 46228077748224 on dev /dev/mapper/crypt_sdk1
[51207.350874] BTRFS warning (device dm-6): checksum error at logical 46228077752320 on dev /dev/mapper/crypt_sdk1, sector 3131104408, root 5, inode 141388, offset 1186082816, length 4096, links 1 (path: path/file.ext)
[51207.350878] BTRFS error (device dm-6): bdev /dev/mapper/crypt_sdk1 errs: wr 0, rd 0, flush 0, corrupt 8, gen 0
[51207.350892] BTRFS error (device dm-6): unable to fixup (regular) error at logical 46228077752320 on dev /dev/mapper/crypt_sdk1
[51207.354494] BTRFS warning (device dm-6): checksum error at logical 46228077756416 on dev /dev/mapper/crypt_sdk1, sector 3131104416, root 5, inode 141388, offset 1186086912, length 4096, links 1 (path: path/file.ext)
[51207.354497] BTRFS error (device dm-6): bdev /dev/mapper/crypt_sdk1 errs: wr 0, rd 0, flush 0, corrupt 9, gen 0
[51207.354511] BTRFS error (device dm-6): unable to fixup (regular) error at logical 46228077756416 on dev /dev/mapper/crypt_sdk1
[51207.358172] BTRFS warning (device dm-6): checksum error at logical 46228077760512 on dev /dev/mapper/crypt_sdk1, sector 3131104424, root 5, inode 141388, offset 1186091008, length 4096, links 1 (path: path/file.ext)
[51207.358176] BTRFS error (device dm-6): bdev /dev/mapper/crypt_sdk1 errs: wr 0, rd 0, flush 0, corrupt 10, gen 0
[51207.358191] BTRFS error (device dm-6): unable to fixup (regular) error at logical 46228077760512 on dev /dev/mapper/crypt_sdk1