Unable to restore LVM metadata.

[David Scriven via users <users@xxxxxxxxxxxxxxxxxxxxxxx>]

I'm afraid this is a very long post, but I need to describe the situation:

I had one disk fail out of two and in trying to restore the home directory on the primary I erased the lvm directory data I was trying to keep:

root@localhost-live ~]# pvscan
  WARNING: Device for PV F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1 not found or rejected by a filter.
  PV /dev/sda2   VG vg_debussy      lvm2 [931.00 GiB / 0    free]
  PV [unknown]   VG vg_debussy      lvm2 [931.50 GiB / 0    free]
  Total: 2 [<1.82 TiB] / in use: 2 [<1.82 TiB] / in no VG: 0 [0   ]
[root@localhost-live ~]# vgscan
  Reading volume groups from cache.
  WARNING: Device for PV F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1 not found or rejected by a filter.
  Found volume group "vg_debussy" using metadata type lvm2
[root@localhost-live ~]# lvs
  WARNING: Device for PV F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1 not found or rejected by a filter.
  LV      VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  lv_home vg_debussy -wi-----p-   1.75t                                                    
  lv_root vg_debussy -wi-a-----  50.00g                                                    
  lv_swap vg_debussy -wi-ao---- <17.69g                                                    
[root@localhost-live ~]# lvscan
  WARNING: Device for PV F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1 not found or rejected by a filter.
  ACTIVE            '/dev/vg_debussy/lv_root' [50.00 GiB] inherit
  inactive          '/dev/vg_debussy/lv_home' [1.75 TiB] inherit
  ACTIVE            '/dev/vg_debussy/lv_swap' [<17.69 GiB] inherit
[root@localhost-live ~]# pvdisplay
  WARNING: Device for PV F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1 not found or rejected by a filter.
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               vg_debussy
  PV Size               931.02 GiB / not usable 24.00 MiB
  Allocatable           yes (but full)
  PE Size               32.00 MiB
  Total PE              29792
  Free PE               0
  Allocated PE          29792
  PV UUID               KSk5KO-Su5d-H8LO-a8t0-s8gH-WdWA-DXQZTr
   
  --- Physical volume ---
  PV Name               [unknown]
  VG Name               vg_debussy
  PV Size               931.51 GiB / not usable 12.00 MiB
  Allocatable           yes (but full)
  PE Size               32.00 MiB
  Total PE              29808
  Free PE               0
  Allocated PE          29808
  PV UUID               F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1

So at this point I tried to get rid of the disk that was no longer there - BIG MISTAKE!

root@localhost-live ~]# vgreduce --removemissing --force vg_debussy
  WARNING: Device for PV F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1 not found or rejected by a filter.
  WARNING: Removing partial LV vg_debussy/lv_home.
  Logical volume "lv_home" successfully removed
  Wrote out consistent volume group vg_debussy.
[root@localhost-live ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               vg_debussy
  PV Size               931.02 GiB / not usable 24.00 MiB
  Allocatable           yes
  PE Size               32.00 MiB
  Total PE              29792
  Free PE               27626
  Allocated PE          2166
  PV UUID               KSk5KO-Su5d-H8LO-a8t0-s8gH-WdWA-DXQZTr
   
[root@localhost-live ~]# lvscan
  ACTIVE            '/dev/vg_debussy/lv_root' [50.00 GiB] inherit
  ACTIVE            '/dev/vg_debussy/lv_swap' [<17.69 GiB] inherit

OK I got a blank disk and tried to recreate the missing PV:

[root@localhost-live ~]# pvcreate --uuid "F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1" --restorefile /etc/lvm/archive/vg_debussy_00000-611197733.vg /dev/sdc1
  Couldn't find device with uuid F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1.
WARNING: ext4 signature detected on /dev/sdc1 at offset 1080. Wipe it? [y/n]: y
  Wiping ext4 signature on /dev/sdc1.
  Physical volume "/dev/sdc1" successfully created.
[root@localhost-live ~]# pvscan
  PV /dev/sda2   VG vg_debussy      lvm2 [931.00 GiB / 863.31 GiB free]
  PV /dev/sdc1                      lvm2 [<1.82 TiB]
  Total: 2 [<2.73 TiB] / in use: 1 [931.00 GiB] / in no VG: 1 [<1.82 TiB]
[root@localhost-live ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               vg_debussy
  PV Size               931.02 GiB / not usable 24.00 MiB
  Allocatable           yes
  PE Size               32.00 MiB
  Total PE              29792
  Free PE               27626
  Allocated PE          2166
  PV UUID               KSk5KO-Su5d-H8LO-a8t0-s8gH-WdWA-DXQZTr
   
  "/dev/sdc1" is a new physical volume of "<1.82 TiB"
  --- NEW Physical volume ---
  PV Name               /dev/sdc1
  VG Name               
  PV Size               <1.82 TiB
  Allocatable           NO
  PE Size               0   
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               F3lvXa-42cI-6Tx2-hmSr-3E0M-0PFE-W7kLj1

So - vgcfgrestore should work now? - NO!

[root@localhost-live ~]# vgcfgrestore vg_debussy  -f /etc/lvm/archive/vg_debussy_00000-611197733.vg
  Cannot restore Volume Group vg_debussy with 1 PVs marked as missing.
  Restore failed.

So there is nothing missing but the PV is still marked as missing??

I'm stuck I have simply no idea how to proceed.

DS

 

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