Managing Serviceguard 14th Edition, June 2007

Building an HA Cluster Configuration
Preparing Your Systems
Chapter 5228
disks. To make merging the files easier, be sure to keep a careful record
of the physical volume group names on the volume group planning
worksheet (described in Chapter 4).
Use the following procedure to merge files between the configuration
node (ftsys9) and a new node (ftsys10) to which you are importing
volume groups:
1. Copy /etc/lvmpvg from ftsys9 to /etc/lvmpvg.new on ftsys10.
2. If there are volume groups in /etc/lvmpvg.new that do not exist on
ftsys10, remove all entries for that volume group from
/etc/lvmpvg.new.
3. If /etc/lvmpvg on ftsys10 contains entries for volume groups that
do not appear in /etc/lvmpvg.new, then copy all physical volume
group entries for that volume group to /etc/lvmpvg.new.
4. Adjust any physical volume names in /etc/lvmpvg.new to reflect
their correct names on ftsys10.
5. On ftsys10, copy /etc/lvmpvg to /etc/lvmpvg.old to create a
backup. Copy /etc/lvmvpg.new to /etc/lvmpvg on ftsys10.
Creating Additional Volume Groups The foregoing sections show in
general how to create volume groups and logical volumes for use with
Serviceguard. Repeat the procedure for as many volume groups as you
need to create, substituting other volume group names, logical volume
names, and physical volume names. Pay close attention to the disk device
names, which can vary from one node to another.
Creating a Storage Infrastructure with VxVM
In addition to configuring the cluster, you create the appropriate logical
volume infrastructure to provide access to data from different nodes.
This is done with Logical Volume Manager (LVM), Veritas Volume
Manager (VxVM), or Veritas Cluster Volume Manager (CVM) on systems
that support it. You can also use a mixture of volume types, depending on
your needs. LVM and VxVM configuration are done before cluster
configuration, and CVM configuration is done after cluster configuration.
For a discussion of migration from LVM to VxVM storage, refer to
Appendix G.