03-01-2010
The rule to do a "poor man's cluster" is to not use the same names of vg..
Since the LVM comes from HP, if it works the same way, you need knowing how to use vgimport vgexport vgchange, there is no need to vgexport each time when changing server (which means you need to vgimport again etc...) once both boxes are set, you only use vgexport/vgimport if you have changed disks configuration... otherwise its useless:
How can you vgexport on a crashed system?
You use vgchange! to activate/deactivate a volume group.
One thing to remember a true cluster has a special mode E (exclusive), you have nothing of the sort and in case or error (mounted both side) you loose everything (trust me -I tried for you long ago...)
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PVCK(8) System Manager's Manual PVCK(8)
NAME
pvck - check physical volume metadata
SYNOPSIS
pvck [-d|--debug] [-h|--help] [-v|--verbose] [--labelsector] PhysicalVolume [PhysicalVolume...]
DESCRIPTION
pvck checks physical volume LVM metadata for consistency.
OPTIONS
See lvm for common options.
--labelsector sector
By default, 4 sectors of PhysicalVolume are scanned for an LVM label, starting at sector 0. This parameter allows you to specify a
different starting sector for the scan and is useful for recovery situations. For example, suppose the partition table is corrupted
or lost on /dev/sda, but you suspect there was an LVM partition at approximately 100 MB. This area of the disk may be scanned by
using the --labelsector parameter with a value of 204800 (100 * 1024 * 1024 / 512 = 204800):
pvck --labelsector 204800 /dev/sda
Note that a script can be used with --labelsector to automate the process of finding LVM labels.
SEE ALSO
lvm(8), pvcreate(8), pvscan(8) vgck(8)
Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) PVCK(8)