On Fri, May 1, 2020 at 1:59 PM Rollo ro <rollodroid@xxxxxxxxx> wrote: > > Am Fr., 1. Mai 2020 um 19:52 Uhr schrieb Chris Murphy <lists@xxxxxxxxxxxxxxxxx>: > > > > A complete dmesg please (not trimmed, starting at boot) would be useful. > > dmesg is spammed with btrfs warnings and errors, so all earlier > content is already gone. I can increase the buffer in grub > configuration and provide the complete dmesg next time. For the current boot: # journalctl -k For previous boot: # journalctl -b -1 -k > While looking at dmesg I found this: > [Fri May 1 16:25:15 2020] BTRFS warning (device sdc1): lost page > write due to IO error on /dev/sde > [Fri May 1 16:25:15 2020] BTRFS error (device sdc1): error writing > primary super block to device 4 > [Fri May 1 16:25:15 2020] BTRFS info (device sdc1): disk added /dev/sdb > [Fri May 1 16:25:49 2020] BUG: kernel NULL pointer dereference, > address: 0000000000000000 This might be related to the device vanishing. The actual problem(s) happened before this. This is just the consequence of the problem. -- Chris Murphy
