HP Serviceguard Continentalcluster manual 189

Checking the Metrocluster Configuration

Starting from HP Serviceguard version A.11.20, the cmcheckconf -vcommand validates the cluster and the package configuration. Starting from the April 2011 patch release, Metrolcuster uses this functionality to ensure the sanity of Metrocluster and the Site Controller package configuration. HP recommends you to set up a cron job to run the cmcheckconf command regularly. For more information about setting the cron job, see Setting up Periodic Cluster Verification section in the latest version of the Managing Serviceguard manual available at http://www.hp.com/ go/hpux-serviceguard-docs —> HP Serviceguard.

“Validating Metrocluster Package” (page 189) lists the checks made on a Metrocluster Package.

Table 17 Validating Metrocluster Package

Validations/Checks	Command	Remark
Check whether the Array Management	cmcheckconf [–v]	For Metrocluster with Continuous Access
Software is available.	cmapplyconf	for P9000 and XP, It checks whether
		the Raid Manager is installed.
	cmcheckconf [-P/-p]
Check whether the contents in the	cmcheckconf [-v]
environment file matches with the
contents in the package present in the
CDB.
Check all attributes in the Metrocluster	cmcheckconf [–v]	Checks the package configuration file
module.	cmapplyconf	that is passed as an argument for the
		cmcheckconf [-P/-p] command.
	cmcheckconf [-P/-p]
		For cmcheckconf, it checks the
		Metrocluster environment file that is
		available in the Metrocluster package
		directory.
Verify if the disks belonging to a	cmcheckconf [–v]	Warns you if the disks belonging to a
volume group or a disk group are	cmapplyconf	volume group or a diskgroup are not
being replicated. **		being replicated. It reports and error if
	cmcheckconf [-P/-p]	the disks belong to a different
		replication group than what is
		mentioned in the environment file or the
		package configuration file.
		When Metrocluster is integrated with
		Site Controller, this check is done only
		when the cmcheckconf [-v]
		command is executed. During
		validation, it creates a list of volume
		groups and diskgroups for all the
		packages controlled by Site Controller
		and does the above check.
		Restrictions
		Cannot confirm if the disks are being
		replicated in case they are being used
		as raw disks or in case they belong to
		an Oracle ASM diskgroup.
		Skips this check on VxVM diskgroups
		if the naming convention used by VxVM
		is legacy and if the controller ID is
		greater than 512 (This happens when
		VxVM uses an internal format to
		recognize devices that do not support
		legacy dsf format). Also skips the check
		if the naming convention is enclosure
		based. In such cases, it is
		recommended that you change the
		naming scheme using the vxddladm
		command so that VxVM output shows

Configuring Modular Packages 189