Building Disaster Recovery Serviceguard Solutions Using Metrocluster with 3PAR Remote Copy for Linux B.01.00.10, December 2013

3 Metrocluster Features
Cluster verification
Starting HP Serviceguard version A.11.20.20, the cmcheckconf -v command validates the
cluster and the package configuration. Metrocluster uses this functionality to ensure the sanity of
Metrocluster package configuration. HP recommends that you set up a cron job to regularly run
the cmcheckconf command. For more information on cmcheckconf command, see the
cmcheckconf (1m) manpage.
The cluster verification feature provides the following benefits:
• It verifies whether the Metrocluster is able to connect to the array to get the status of the Remote
Copy volume group.
• It verifies the replication status of the Remote Copy volume group configured in the package.
• It verifies whether all the package attributes are configured in the package configuration file.
• It verifies whether the disks that are part of Remote Copy volume group are also part of the
logical volume group.
“Validating Metrocluster package” (page 25) lists the checks made on a Metrocluster Package.
Table 2 Validating Metrocluster package
RemarkCommandValidations/Checks
For Metrocluster with 3PAR Remote Copy, it verifies
whether the InformOS CLI is installed.
cmcheckconf [–v]
# cmcheckconf
Verify whether the Array Management
Software is available.
cmapplyconf
# cmapplyconf -P
<Metrocluster_pkg.conf>
cmcheckconf [-P/-p]
# cmcheckconf -P
<Metrocluster_pkg.conf>
# cmcheckconf -p
<pkg_reference_file>
Verifies the package configuration file that is
passed as an argument for the cmcheckconf
cmcheckconf [–v]
# cmcheckconf
Verify all attributes in the Metrocluster
module.
[-P/-p] command. For cmcheckconf, it checks
cmapplyconf
the Metrocluster environment file that is available
in the Metrocluster package directory.
# cmapplyconf -P
<Metrocluster_pkg.conf>
cmcheckconf [-P/-p]
# cmcheckconf -P
<Metrocluster_pkg.conf>
# cmcheckconf -p
<Metrocluster_pkg>
Warns you if the disks belonging to a volume
group are not being replicated. It reports an error
cmcheckconf [–v]
# cmcheckconf
Verify whether the disks belonging to
a volume group are being replicated.
if the disks belong to a replication group that is
cmapplyconf
different from what is mentioned in the environment
file or the package configuration file.
# cmapplyconf -P
<Metrocluster_pkg.conf>
cmcheckconf [-P/-p]
# cmcheckconf -P
<Metrocluster_pkg.conf>
Cluster verification 25