Have same issue (RAID5 over 4 disks):
https://marc.info/?l=linux-btrfs&m=154815802313248&w=2
Having perfectly healthy HDDs it seem to be caused by some bit flips
in SDRAM which is non-ECC in my case, unfortunately. Tried --repair,
didn't helped, same for --init-csum-tree. Now using fs in ro mode
(
03606] BTRFS info (device sdf): no csum found for inode
13730923 start 1619410944
[81685.703608] BTRFS critical (device sdf): unable to find logical
144149573654298624 length 4096
[81685.703772] BTRFS critical (device sdf): unable to find logical
144149573654298624 length 4096
Any help is appreciated.
Best regards,
Artem Mygaiev
Hello
I am running Ubuntu Server 16.04 LTS with HWE stack (4.18 kernel).
System is running on 2 protected SSDs in RAID1 mode, separate SSD
assigned for swap and media download / processing cache and main data
storage partition (read intense but not write intense, archive-like)
is 32TB RAID5 btrfs
