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Old 08-04-2011, 10:36 AM   #1
SoftDux
LQ Newbie
 
Registered: Jul 2006
Location: Johannesburg, South Africa
Distribution: Suse, Ubuntu, Fedora Core
Posts: 14

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can't recover LVM volume: Please specify a *single* volume group to restore


Hi everyone,

I'm trying to recover a deleted LVM volume but can't see to get the
syntax right.


Running the following command gives me a list of backed up LVM volumes:

Quote:
root@usaxen02:[~]$ vgcfgrestore -l fluidVG_125094317679


------- snip ---------

File: /etc/lvm/archive/fluidVG_125094317679_00126-1479850541.vg
VG name: fluidVG_125094317679
Description: Created *before* executing 'lvremove
/dev/fluidVG_125094317679/mars.x.com_root_125152080771'
Backup Time: Tue Aug 2 17:40:44 2011


File: /etc/lvm/backup/fluidVG_125094317679
VG name: fluidVG_125094317679
Description: Created *after* executing 'lvremove
/dev/fluidVG_125094317679/mars.x.com_root_125152080771'
Backup Time: Tue Aug 2 17:40:44 2011
So I want to recover mars.x.com_root_125152080771 and issue the
following command:

Quote:
root@usaxen02:[~]$ vgcfgrestore -f fluidVG_125094317679
mars.x.com_root_125152080771
fluidVG_125094317679: stat failed: No such file or directory
Couldn't read volume group metadata.
Restore failed.

root@usaxen02:[~]$ vgcfgrestore -f fluidVG_125094317679
Please specify a *single* volume group to restore.

root@usaxen02:[~]$ vgcfgrestore -f mars.x.com_root_125152080771
Please specify a *single* volume group to restore.
All different attempts, which apparently should work according to some
google search results I've found but doesn't.


Another attempt:

Quote:
root@usaxen02:[~]$ vgcfgrestore -vvt
/etc/lvm/archive/fluidVG_125094317679_00126-1479850541.vg
fluidVG_125094317679
Test mode: Metadata will NOT be updated.
Setting global/locking_type to 1
global/wait_for_locks not found in config: defaulting to 1
File-based locking selected.
Setting global/locking_dir to /var/lock/lvm
Please specify a *single* volume group to restore.
Test mode: Wiping internal cache
Wiping internal VG cache

Does anyone know what the correct syntax should be on CentOS 5.5?
 
Old 08-04-2011, 03:31 PM   #2
tommylovell
Member
 
Registered: Nov 2005
Distribution: Raspbian, Debian, Ubuntu
Posts: 380

Rep: Reputation: 103Reputation: 103
Quote:
vgcfgrestore [-d|--debug] [-f|--file filename] [-l[l]|--list]
[-h|--help] [-M|--Metadatatype1|2] [-t|--test] [-v|--verbose]
VolumeGroupName
'VolumeGroupName' is not in brackets, and is therefore a required parameter.

So the list, "vgcfgrestore -l fluidVG_125094317679" was correct.

The actual restore would be in the format "vgcfgrestore -f <filename> <vg_name>".

The '-f' flag requires a filename, so either of these should work.
Code:
vgcfgrestore -f /etc/lvm/archive/fluidVG_125094317679_00126-1479850541.vg fluidVG_125094317679
Code:
vgcfgrestore -f /etc/lvm/backup/fluidVG_125094317679 fluidVG_125094317679
Double check, triple check the content of them to make sure that it is what you want restored. 'vgcfgrestore' is not a fine surgical instrument, it's more of a sledgehammer...

Last edited by tommylovell; 08-04-2011 at 03:38 PM.
 
  


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