On Thu, Apr 30, 2020 at 12:40 PM Nouts <nouts@xxxxxxxxxxxxxx> wrote: > > Thanks for your help. I compiled btrfs-progs v5.6 from github. > > Here is the dump from /dev/sda : https://pastebin.com/e3YZxxsZ > > And btrfs check returned an error instantly : > Opening filesystem to check... > ERROR: child eb corrupted: parent bytenr=5923702292480 item=2 parent level=2 child level=0 > ERROR: failed to read block groups: Input/output error > ERROR: cannot open file system Ok try: btrfs insp dump-t -b 5923702292480 --follow /dev/sda Qu might have an idea. But in the meantime, my suggestion is to try to mount with a newer kernel. In order try: normal mount mount -o ro mount -o ro,degraded mount -o ro,degraded,usebackuproot And if any works, at least you can update backups in case this file system can't be fixed. -- Chris Murphy
