Managing HP Serviceguard for Linux, Tenth Edition, September 2012

Figure 18 Automatic Failback Configuration After Restart of node1
NOTE: Setting the failback_policy to automatic can result in a package failback
and application outage during a critical production period. If you are using automatic
failback, you may want to wait to add the package’s primary node back into the cluster
until you can allow the package to be taken out of service temporarily while it switches
back to the primary node.
On Combining Failover and Failback Policies
Combining a failover_policy of min_package_node with a failback_policy
of automatic can result in a package’s running on a node where you did not expect
it to run, since the node running the fewest packages will probably not be the same host
every time a failover occurs.
Using the Generic Resources Monitoring Service
Generic Resources module is a resource monitoring mechanism in Serviceguard that
allows you to monitor critical resources for a package through System Fault Management
(SFM), or custom monitors by configuring these monitors as user-defined services. It
How the Package Manager Works 55