Managing Serviceguard 12th Edition, March 2006

Understanding Serviceguard Software Components
How the Package Manager Works
Chapter 3 77
Figure 3-6 shows the condition where Node 1 has failed and Package 1
has been transferred to Node 2. Package 1's IP address was transferred
to Node 2 along with the package. Package 1 continues to be available
and is now running on Node 2. Also note that Node 2 can now access both
Package1’s disk and Package2’s disk.
Figure 3-6 After Package Switching
Failover Policy The Package Manager selects a node for a failover
package to run on based on the priority list included in the package
configuration file together with the FAILOVER_POLICY parameter, also in
the configuration file. The failover policy governs how the package
manager selects which node to run a package on when a specific node has
not been identified and the package needs to be started. This applies not
only to failovers but also to startup for the package, including the initial
startup. The two failover policies are CONFIGURED_NODE (the default) and
MIN_PACKAGE_NODE. The parameter is coded in the package ASCII
configuration file: