HP Performing Maintenance in Service Guard Clusters with cmmodpkg and cmviewcl

Additional Rules for Partial-Startup Maintenance Mode

•You must halt the package before taking it out of partial-startup maintenance mode.

•To run a package normally after running it in partial-startup maintenance mode, you must take it out of maintenance mode, and then restart it.

Dependency Rules for a Package in Maintenance Mode or Partial-Startup Maintenance Mode

You cannot configure new dependencies involving a package running in maintenance mode, and in addition the following rules apply (we'll call the package in maintenance mode pkgA).

•The packages that depend on pkgA must be down with package switching disabled when you place pkgA in maintenance mode. This applies to all types of dependency (including exclusionary dependencies) as described under “About Package Dependencies” (page 137).

◦You cannot enable a package that depends on pkgA.

◦You cannot run a package that depends on pkgA, unless the dependent package itself is in maintenance mode.

•Dependency rules governing packages that pkgA depends on to be UP are bypassed so that these packages can halt and fail over as necessary while pkgA is in maintenance mode.

•If both packages in a dependency relationship are in maintenance mode, dependency rules are ignored for those two packages.

For example, both packages in an exclusionary dependency can be run and halted in maintenance mode at the same time.

Performing Maintenance Using Maintenance Mode

You can put a package in maintenance mode, perform maintenance, and take it out of maintenance mode, whether the package is down or running.

This mode is mainly useful for making modifications to networking, generic resources, or EMS resources. To modify other components of the package, such as services or storage, follow the additional rules and instructions under “Performing Maintenance Using Partial-Startup Maintenance Mode” (page 290).

If you want to reconfigure the package (using cmapplyconf (1m)) see “Reconfiguring a Package” (page 310) and “Allowable Package States During Reconfiguration ” (page 314).

Procedure

Follow these steps to perform maintenance on a package's networking, generic resources components, or EMS components.

In this example, we'll call the package pkg1 and assume it is running on node1.

1.Place the package in maintenance mode: cmmodpkg -m on -n node1 pkg1

2.Perform maintenance on the networks or resources and test manually that they are working correctly.

NOTE: If you now run cmviewcl, you'll see that the STATUS of pkg1 is up and its STATE is maintenance.

3.If everything is working as expected, take the package out of maintenance mode: cmmodpkg -m off pkg1

Managing Packages and Services 289