Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

must be configured with sites and each cluster nodes must be associated to a site. For
information on configuring the failover policy to site_preferred or site_preferred_manual, see
“Site Aware Failover Configuration” (page 26).
3. Validate the package configuration file.
# cmcheckconf -P pkgName.config
4. Apply the package configuration file.
# cmapplyconf -P pkgName.config
NOTE: After the modular Metrocluster 3PAR package is created, if the value of any
Metrocluster 3PAR parameter needs to be changed, then edit this package configuration file
and re-apply it.
Starting the Metrocluster Package
This section describes the procedure to start the Metrocluster package after completing the
configuration of the Metrocluster package using 3PAR Remote Copy in your environment.
Complete the following procedure to start the Metrocluster package:
1. Run the cmviewcl command to view the Metrocluster package.
2. Start the Metrocluster package.
cmmodpkg -e <pkg_name>
The package starts up on its primary node.
3. Check the Metrocluster package log file to ensure a clean startup.
Administering a Cluster that Uses Metrocluster 3PAR Remote Copy
While the package is running, a manual storage failover on Remote Copy volume group outside
of Metrocluster with 3PAR Remote Copy software can cause the package to halt due to unexpected
condition of the 3PAR Remote Copy virtual volumes. It is recommended that no manual storage
failover be performed while the package is running.
If the Remote Copy replication was stopped due to link failures, you can manually start the
replication even while the package is running. You do not have to manually start the replication
if the auto_recover option is set for the Remote Copy volume group.
Viewing the Remote Copy volume group details
To associate the Remote Copy volume group name with the package, run the cmgetpkgenv
command:
# cmgetpkgenv <pkg_name>
To list the various properties of 3PAR Remote Copy volume group, run the CLI command
showrcopy.
The Remote Copy volume group details can also be viewed using HP 3PAR Management Console.
Normal Maintenance
There might be situations when the package has to be taken down for maintenance purposes
without having the package move to another node. The following procedure is recommended for
normal maintenance of the Metrocluster with 3PAR Remote Copy package.
1. Stop the package with the appropriate Serviceguard command.
# cmhaltpkg pkgname
2. Perform the maintenance.
Starting the Metrocluster Package 325