Прислали логи на посмотреть, в них такая куча ошибок:
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:46 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
Aug 14 23:11:47 nixos kernel: BTRFS critical (device dm-2): corrupt leaf, bad key order: block=261648994178,root=1, slot=51
и еще такие:
Aug 14 23:12:52 nixos kernel: BTRFS info (device dm-2): no csum found for inode 3524 start 23916544
Кто виноват? Btrfs или диск сыпится (проверку поверхности пока не делали)