Восстановление таблицы разделов?

Question

[omarion]

Случайно убил файловую часть, как теперь можно восстановить?

root@git-runner:~# pvscan --cache
WARNING: Couldn't find device with uuid 1kpYMI-6LcQ-gtcm-TPfD-ohdo-mzsf-vejXeZ.
pvscan[550] PV /dev/sdb1 online.
root@git-runner:~# hexdump -C /dev/sdc | head
00000000   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001b0   00 00 00 00 00 00 00 00  d4 22 20 c3 00 00 00 00  |........." .....|
000001c0   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001f0   00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
00000200   4c 41 42 45 4c 4f 4e 45  01 00 00 00 00 00 00 00  |LABELONE........|
00000210   b8 57 4c 13 20 00 00 00  00 00 00 00 00 00 00 00  |.WL.............|
00000220   31 6b 70 59 4d 49 36 4c  63 51 67 74 63 6d 54 50  |1kpYMI6LcQgtcmTP|
00000230   66 44 6f 68 64 6f 6d 7a  73 66 76 65 6a 58 65 5a  |fDohdomzsfvejXeZ|
root@git-runner:~# lvscan
WARNING: Couldn't find device with uuid 1kpYMI-6LcQ-gtcm-TPfD-ohdo-mzsf-vejXeZ.
WARNING: VG d1 is missing PV 1kpYMI-6LcQ-gtcm-TPfD-ohdo-mzsf-vejXeZ (last written to [unknown]).
  inactive          '/dev/d1/home' [<1.86 GiB] inherit
  ACTIVE            '/dev/d1/usr' [3.72 GiB] inherit
  inactive          '/dev/d1/var' [52.69 GiB] inherit
  inactive          '/dev/d1/opt' [<6.86 GiB] inherit
  inactive          '/dev/d1/tmp' [976.00 MiB] inherit
  ACTIVE            '/dev/d1/root' [<1.91 GiB] inherit
root@git-runner:~# pvscan
WARNING: Couldn't find device with uuid 1kpYMI-6LcQ-gtcm-TPfD-ohdo-mzsf-vejXeZ.
WARNING: VG d1 is missing PV 1kpYMI-6LcQ-gtcm-TPfD-ohdo-mzsf-vejXeZ (last written to [unknown]).
  PV /dev/sdb1   VG d1   lvm2 [<18.00 GiB / 0     free]
  PV [unknown]   VG d1   lvm2 [<50.00 GiB / 0     free]
  Total: 2 [67.99 GiB] / in use: 2 [67.99 GiB] / in no VG: 0 [0   ]

Comments

[shurshur]

Что именно сделал, что "убил"?

Если уже залил туда террабайт нулей с помощью dd, то вряд ли это можно починить.

[Дмитрий]

https://www.cgsecurity.org/wiki/TestDisk_%D1%88%D0...

Answer 1

[Пума Тайланд]

из гексдампа — LABELONE на /dev/sdc sector 1 жив, UUID тот самый. Скорее devices/filter в lvm.conf или use_devicesfile режет голый диск без разделов. Проверь:

pvscan --cache /dev/sdc

lvmconfig --type current devices/filter devices/use_devicesfile

pvck --dump headers /dev/sdc

если pvck скажет что type в label не "LVM2 001" — напиши

Comments

[omarion]

root@git-runner:~# lvmconfig --type current devices/filter devices/use_devicesfile
Configuration node devices/filter not found
Configuration node devices/use_devicesfile not found
root@git-runner:~# pvck --dump headers /dev/sdc | head -10
label_header at 512
label_header.id LABELONE
Found bad header or metadata values. label_header.sector 1

label_header.crc 0x134c57b8
label_header.offset 32
label_header.type ????????
CHECK: label_header.crc expected 0x81677d43
CHECK: label_header.type expected LVM2 001
pv_header at 544
pv_header.pv_uuid 1kpYMI6LcQgtcmTPfDohdomzsfvejXeZ
root@git-runner:~# lvmconfig --type current devices/filter devices/use_devicesfile
Configuration node devices/filter not found
Configuration node devices/use_devicesfile not found
root@git-runner:~#

[Пума Тайланд]

uuid жив — label header просто слетел. Попробуй pvck --repairtype label_header /dev/sdc — должен починить без потери данных.

[omarion]

root@git-runner:~# pvck --repairtype label_header /dev/sdc
CHECK: label_header.crc expected 0x81677d43
CHECK: label_header.type expected LVM2 001
WARNING: No LVM label found on /dev/sdc. It may not be an LVM device.
Write LVM header to device? y
Writing label_header.crc 0x134c57b8
Write new LVM header to /dev/sdc? y
root@git-runner:~# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 512M 0 disk
├─sda1 8:1 0 510M 0 part /boot
sdb 8:16 0 70G 0 disk
└─sdb1 8:17 0 70G 0 part
├─d1-root 254:0 0 1.9G 0 lvm /
└─d1-usr 254:1 0 3.7G 0 lvm /usr
sdc 8:32 0 100G 0 disk
sr0 11:0 1 1024M 0 rom
root@git-runner:~# pvscan
WARNING: ignoring metadata seqno 14 on /dev/sdb1 for VG d1.
WARNING: Inconsistent metadata found for VG d1.
See vgck --updatemetadata to correct inconsistency.
WARNING: VG d1 was previously updated while PV /dev/sdc was missing.
WARNING: VG d1 was missing PV /dev/sdc 1kpYMI-6LcQ-gtcm-TPfD-ohdo-mzsf-vejXeZ.
PV /dev/sdb1 VG d1 lvm2 [<18.00 GiB / 0 free]
PV /dev/sdc VG d1 lvm2 [<50.00 GiB / 0 free]
Total: 2 [67.99 GiB] / in use: 2 [67.99 GiB] / in no VG: 0 [0 ]
root@git-runner:~# _

[Пума Тайланд]

vgck --updatemetadata d1 — исправит метаданные, потом vgchange -ay d1 — активирует все тома.

Answer 2

[omarion]

Спасибо большое, все решилось, да и файл из архива нужно было подменить missing на пустоту, и после рестарта, все восстановилось