HP Serviceguard Version A.11.19 Release Notes, October 2009

For a summary of what can be changed online, with instructions and caveats, see the
section “Reconfiguring a Cluster” in Chapter 7 of the latest version of Managing
Serviceguard.
New Online Package Configuration Capabilities
Serviceguard A.11.19 allows you to perform most configuration changes to modular
packages, and many changes to legacy packages, while the package is running. For
details, instructions, and caveats, see the section “Reconfiguring a Package” in chapter
7 of the latest version of Managing Serviceguard, and in particular the subsection
“Allowable Package States During Reconfiguration”.
For information about legacy and modular packages, see Chapter 6 of the latest version
of Managing Serviceguard.
New Preview Capabilities
Many variables affect package placement, including the availability of cluster nodes;
the availability of networks and other resources on those nodes; failover and failback
policies; and package weights, dependencies, and priorities, if you have configured
them. You can preview the effect on packages of certain actions or events before they
actually occur.
Serviceguard A.11.19 provides two ways to do this: you can use the preview mode
(-t) of Serviceguard commands, or you can use the cmeval (1m) command to simulate
different cluster states. Alternatively, you might want to model changes to the cluster
as a whole; cmeval allows you to do this.
For more information, see “Previewing the Effect of Cluster Changes” in Chapter 7 of
Managing Serviceguard.
Package Maintenance Mode
NOTE: For information about legacy and modular packages, see Chapter 6 of Managing
Serviceguard.
With the patches listed under “October 2009 Patches” (page 11) Serviceguard A.11.19
allows you to perform maintenance on a modular, failover package while the package
is running. This is called maintenance mode. The package must have package switching
disabled before you can place it in, or take it out, of maintenance mode.
This capability is not yet supported by Serviceguard Manager; you must use the
command line as shown in “Maintaining a Package” in Chapter 7 of the latest version
of Managing Serviceguard. See also “Current Limitations of Serviceguard Manager”
(page 36).
30 Serviceguard Version A.11.19 Release Notes