Managing Serviceguard Nineteenth Edition, Reprinted June 2011

The system multi-node package SG-CFS-pkg manages the cluster’s volumes. When you use CFS,
Serviceguard enables you to create and manage multi-node packages for disk groups and mount
points using modular style packages or legacy style packages.
To create modular CVM disk group and CFS mount point packages, use the cmmakepkg command
and edit the parameters in the package configuration file. You can choose to name the packages.
You can also use the Serviceguard Manager to create the modular CFS packages. See the
Serviceguard Manager online help for more information. Alternatively, you can create CFS legacy
disk group and mount point packages with the cfs family of commands; do not edit the
configuration file. Serviceguard names the packages SG-CFS-DG-id# and SG-CFS-MP-id#,
respectively, and automatically increments their ID numbers.
NOTE: It is highly recommend to use the modular style of packaging as they offer flexibility and
can be managed better compared to the legacy style of packaging. For differences between the
two, see “Modular CFS packages v/s Legacy CFS packages” (page 190). For more information on
modular CFS packages, see “Managing Disk Groups and Mount Points Using Modular Packages”
(page 195).
CVM 4.1 and later requires you to configure multiple heartbeat networks, or a single heartbeat
with a standby. The following interfaces are supported as heartbeat networks — APA (CVM 5.0.1
and later) and VLAN (CVM 4.1 and later).
You create a chain of package dependencies for application failover packages and the non-failover
packages:
1. The failover package’s applications should not run on a node unless the mount point packages
are already running.
In the package’s configuration file, you fill out the dependency parameter to specify the
requirement that the disk group is UP on the SAME_NODE.
2. The disk group packages should not run unless the CFS system multi-node package
(SG-CFS-pkg) is running to manage the volumes.
122 Planning and Documenting an HA Cluster