Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Building an HA Cluster Configuration
Preparing Your Systems
Chapter 5 171
Red Hat
It is not necessary to prevent vgscan on Red Hat.
To deactivate any volume groups that will be under Serviceguard control,
add vgchange commands to the end of /etc/rc.d/rc.sysinit; for
example, if volume groups sgvg00 and sgvg01 are under Serviceguard
control, add the following lines to the end of the file:
vgchange -a n /dev/sgvg00
vgchange -a n /dev/sgvg01
The vgchange commands activate the volume groups temporarily, then
deactivate them; this is expected behavior.
Setting up Disk Monitoring
HP Serviceguard for Linux includes a Disk Monitor which you can use to
detect problems in disk connectivity. This lets you fail a package from
one node to another in the event of a disk link failure.
See “Creating a Disk Monitor Configuration” on page 239 for
instructions on configuring disk monitoring.