Managing Serviceguard 13th Edition, February 2007

Configuring Packages and Their Services
Creating the Package Configuration
Chapter 6 259
Configuring System Multi-node Packages
There are two system multi-node packages that regulate VERITAS CVM
Cluster Volume Manager. These packages ship with the Serviceguard
product. There are two versions of the package files: VxVM-CVM-pkg for
CVM Version 3.5, and SG-CFS-pkg for CVM Version 4.1.
NOTE CVM (and CFS - Cluster File System) are supported on some, but not all
current releases of HP-UX. Check the latest Release Notes for your
version of Serviceguard for up-to-date information
(http://www.docs.hp.com -> High Availability - > Serviceguard).
The SG-CFS-pkg for CVM Version 4.1 has the following responsibilities:
• Maintain VERITAS configuration files /etc/llttab,
/etc/llthosts, /etc/gabtab
• Launch required services: cmvxd, cmvxpingd, vxfsckd
• Start/halt VERITAS processes in the proper order: llt, gab, vxfen,
odm, cvm, cfs
CAUTION Serviceguard manages VERITAS processes, specifically gab and LLT,
through system multi-node packages. As a result, the VERITAS
administration commands such as gabconfig, llthosts, and lltconfig
should only be used in the display mode, such as gabconfig -a. You
could crash nodes or the entire cluster if you use VERITAS commands
such as the gab* or llt* commands to configure these components or
affect their runtime behavior.
For CVM, use the cmapplyconf command to add the system multi-node
packages to your cluster. If you are using the VERITAS Cluster File
System, use the cfscluster command to activate and halt the system
multi-node package in your cluster.
NOTE Do not create or modify these packages by editing an ASCII
configuration file. Never edit their control script files.