Managing Serviceguard 14th Edition, June 2007

Cluster and Package Maintenance
Managing Packages and Services
Chapter 7 343
System multi-node packages run on all cluster nodes simultaneously;
halting these packages stops them running on all nodes. A multi-node
package can run on several nodes simultaneously; you can halt it on all
the nodes it is running on, or you can specify individual nodes.
Halting a Package that Has Dependencies
Before halting a package, it is a good idea to use the cmviewcl command
to check for package dependencies.
You cannot halt a package unless all the packages that depend on it are
down. If you try, you’ll see a Serviceguard message telling you why the
operation failed, and the package will remain up.
If this happens, you can repeat the halt command, this time including
the dependent package(s); Serviceguard will halt all the packages in the
correct order. First, use cmviewcl to be sure that no other running
package has a dependency on any of the packages you are halting.
You can use Serviceguard Manager, or Serviceguard commands as shown
below, to halt a package.
Using Serviceguard Commands to Halt a Package
Use the cmhaltpkg command to halt a package, as follows:
cmhaltpkg pkg1
This halts pkg1, and, if pkg1 is a failover package, also disables it from
switching to another node.
You cannot halt a package unless all packages that depend on it are
down. If you try, Serviceguard will take no action, except to send a
message indicating that not all dependent packages are down. Before
you halt a system multi-node package, or halt all instances of a
multi-node package, halt any packages that depend on them
Moving a Failover Package
You can use Serviceguard Manager, or Serviceguard commands as shown
below, to move a failover package from one node to another.