Managing Serviceguard 14th Edition, June 2007

Building an HA Cluster Configuration
Preparing Your Systems
Chapter 5 227
NOTE When you use PVG-strict mirroring, the physical volume group
configuration is recorded in the /etc/lvmpvg file on the
configuration node. This file defines the physical volume groups
which are the basis of mirroring and indicate which physical volumes
belong to each physical volume group. Note that on each cluster
node, the /etc/lvmpvg file must contain the correct physical volume
names for the physical volume groups’s disks as they are known on
that node. Physical volume names for the same disks could be
different on different nodes. After distributing volume groups to
other nodes, make sure each node’s /etc/lvmpvg file correctly
reflects the contents of all physical volume groups on that node. See
the following section, “Making Physical Volume Group Files
Consistent.”
7. Make sure that you have deactivated the volume group on ftsys9.
Then enable the volume group on ftsys10:
vgchange -a y /dev/vgdatabase
8. Create a directory to mount the disk:
mkdir /mnt1
9. Mount and verify the volume group on ftsys10:
mount /dev/vgdatabase/lvol1 /mnt1
10. Unmount the volume group on ftsys10:
umount /mnt1
11. Deactivate the volume group on ftsys10:
vgchange -a n /dev/vgdatabase
Making Physical Volume Group Files Consistent Skip ahead to the
next section if you do not use physical volume groups for mirrored
individual disks in your disk configuration.
Different volume groups may be activated by different subsets of nodes
within a Serviceguard cluster. In addition, the physical volume name for
any given disk may be different on one node from what it is on another.
For these reasons, you must carefully merge the /etc/lvmpvg files on all
nodes so that each node has a complete and consistent view of all
cluster-aware disks as well as of its own private (non-cluster-aware)