Zdravím,
mám VPS u jednoho hostingu, ten mi vlivem jeho chyby smazal celý 370 GB virtuální disk, obnovili mi ho z jejich zálohy, ale Btrfs na šifrovaném LVM při pokusu o mount píše chybu. Zkoušel jsem opravit, ale marně, viz níže. Nenapadne někoho něco jak to opravit?
Verze software
root@krato-space:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04 LTS
Release: 18.04
Codename: bionic
root@krato-space:~# uname -a
Linux krato-space 4.17.8-041708-generic #201807180730 SMP Wed Jul 18 07:32:29 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
root@krato-space:~# btrfs --version
btrfs-progs v4.15.1
Chyba při mount
root@xubuntu:/media# mount /dev/mapper/linux-system linux-system
mount: /media/linux-system: wrong fs type, bad option, bad superblock on /dev/mapper/linux-system, missing codepage or helper program, or other error.
root@xubuntu:/media# tail /var/log/syslog
Jul 24 18:56:57 xubuntu dhclient[2686]: DHCPDISCOVER on ens3 to 255.255.255.255 port 67 interval 6 (xid=0x823cbd3d)
Jul 24 18:57:03 xubuntu dhclient[2686]: DHCPDISCOVER on ens3 to 255.255.255.255 port 67 interval 9 (xid=0x823cbd3d)
Jul 24 18:57:24 xubuntu kernel: [ 2019.510859] BTRFS info (device dm-1): disk space caching is enabled
Jul 24 18:57:24 xubuntu kernel: [ 2019.510861] BTRFS info (device dm-1): has skinny extents
Jul 24 18:57:24 xubuntu kernel: [ 2019.515375] BTRFS error (device dm-1): parent transid verify failed on 290030944256 wanted 685941 found 686068
Jul 24 18:57:24 xubuntu kernel: [ 2019.516184] BTRFS error (device dm-1): parent transid verify failed on 290030944256 wanted 685941 found 686068
Jul 24 18:57:24 xubuntu kernel: [ 2019.516188] BTRFS warning (device dm-1): failed to read tree root
Jul 24 18:57:24 xubuntu kernel: [ 2019.576034] BTRFS error (device dm-1): open_ctree failed
Jul 24 18:57:21 xubuntu dhclient[2686]: message repeated 2 times: [ DHCPDISCOVER on ens3 to 255.255.255.255 port 67 interval 9 (xid=0x823cbd3d)]
Jul 24 18:57:30 xubuntu dhclient[2686]: DHCPDISCOVER on ens3 to 255.255.255.255 port 67 interval 12 (xid=0x823cbd3d)
Marné pokusy o opravu
root@xubuntu:/media# mount /dev/mapper/linux-system linux-system -o ro,usebackuproot
mount: /media/linux-system: wrong fs type, bad option, bad superblock on /dev/mapper/linux-system, missing codepage or helper program, or other error.
root@xubuntu:/media# btrfs rescue zero-log /dev/mapper/linux-system
parent transid verify failed on 290030944256 wanted 685941 found 686068
parent transid verify failed on 290030944256 wanted 685941 found 686068
parent transid verify failed on 290030944256 wanted 685941 found 686068
parent transid verify failed on 290030944256 wanted 685941 found 686068
Ignoring transid failure
Couldn't setup extent tree
Couldn't setup device tree
ERROR: could not open ctree
root@xubuntu:/media# btrfs check /dev/mapper/linux-system
parent transid verify failed on 290030944256 wanted 685941 found 686068
parent transid verify failed on 290030944256 wanted 685941 found 686068
parent transid verify failed on 290030944256 wanted 685941 found 686068
parent transid verify failed on 290030944256 wanted 685941 found 686068
Ignoring transid failure
Couldn't setup extent tree
ERROR: cannot open file system
root@xubuntu:/media# mount /dev/mapper/linux-system linux-system -o ro
mount: /media/linux-system: wrong fs type, bad option, bad superblock on /dev/mapper/linux-system, missing codepage or helper program, or other error.
Dodatek: Zkusil jsem i mount -o recovery, ale také bez úspěchu.