[linux-lvm] LVM crashed, no superblock on dozens of LVs even after vgcfgrestore

[Christophe]

Hi,

I use LVM on Debian Wheezy, kernel 3.2.0-4-amd64, with several dozens of 
LVs.

Every attempt of mounting any of these LVs says : can't read superblock

I can't imagine than each of all theses LVs were corrupted at the same time.

There should be a common problem for that. But which one ??? FYI I'm 
using LVM -on-DRBD-on-LVM.
DBRD seems to be fine.

pvs
  PV                VG         Fmt  Attr PSize   PFree
   /dev/raidssd/drbd0 miroirtest lvm2 a--  124,99g   9,99g
   /dev/raidssd/drbd1 miroir1    lvm2 a--  899,97g      0
   /dev/raidssd/drbd2 miroir2    lvm2 a--  899,97g      0
   /dev/raidssd/drbd3 miroir1    lvm2 a--  899,97g      0
   /dev/raidssd/drbd4 miroir2    lvm2 a--  899,97g   9,99g
   /dev/raidssd/drbd5 miroir1    lvm2 a--  929,97g      0
   /dev/raidssd/drbd6 miroir2    lvm2 a--  929,97g   1,70g
   /dev/raidssd/drbd7 miroir1    lvm2 a--  929,97g  17,88g
   /dev/raidssd/drbd8 miroir2    lvm2 a--  935,96g 157,64g
   /dev/sda           raidssd    lvm2 a--    3,64t      0
   /dev/sdb           raidssd    lvm2 a--    3,64t      0


cat /proc/drbd
version: 8.3.11 (api:88/proto:86-96)
srcversion: 41C52C8CD882E47FB5AF767
  0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r-----
     ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
  1: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r-----
     ns:0 nr:10990235 dw:10990235 dr:0 al:0 bm:178 lo:0 pe:0 ua:0 ap:0 
ep:1 wo:d oos:0
  2: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r-----
     ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
  3: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r-----
     ns:0 nr:21387 dw:21387 dr:0 al:0 bm:6 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d 
oos:0
  4: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r-----
     ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
  5: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r-----
     ns:0 nr:2648 dw:2648 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
  6: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r-----
     ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
  7: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate A r-----
     ns:0 nr:59829829 dw:59829829 dr:0 al:0 bm:93 lo:0 pe:0 ua:0 ap:0 
ep:1 wo:d oos:0
  8: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate A r-----
     ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0

There was no error about that in the system logs.

Any idea about that ?

Regards,

-- 
Christophe