HP Serviceguard Extension for RAC (SGeRAC) manual Initializing the Veritas Volume Manager

For more information, refer to your version of the Serviceguard Extension for RAC Release Notes and HP Serviceguard Storage Management Suite Release Notes located at www.hp.com/go/hpux-serviceguard-docs.

CAUTION: Once you create the disk group and mount point packages, you must administer the cluster with CFS commands, including cfsdgadm, cfsmntadm, cfsmount, and cfsumount. You must not use the HP-UX mount or umount command to provide or remove access to a shared file system in a CFS environment. Using these HP-UX commands under these circumstances is not supported. Use cfsmount and cfsumount instead.

If you use the HP-UX mount and umount commands, serious problems could occur, such as writing to the local file system instead of the cluster file system. Non-CFS commands could cause conflicts with subsequent CFS command operations on the file system or the Serviceguard packages, and will not create an appropriate multi-node package—cluster packages will not be aware of file system changes.

Creating an SGeRAC Cluster with CFS for Oracle 11gR1 or 11gR2

The following software needs to be pre-installed in order to use this configuration.

NOTE: If you are installing CFS 4.1 or higher version with either the Storage Management Suite (SMS) bundle or Mission Critical Operating Environment (MCOE), High Availability Operating Environment (HAOE), or Data Center Operating Environment (DCOE), use the appropriate product number as described in the HP Serviceguard Storage Management Suite Release Notes.

With CFS, the database software and database files (control, redo, data files), and archive logs may reside on a cluster file system that is visible by all nodes.

In the example below, both the Oracle RAC software and datafiles reside on CFS. There is a single Oracle home. Three CFS file systems are created for Oracle home, Oracle datafiles, and for the Oracle Cluster Registry (OCR) and vote device. The Oracle Cluster Software home is on a local file system.

/cfs/mnt1 – for Oracle Base and Home /cfs/mnt2 – for Oracle datafiles /cfs/mnt3 - for OCR and Vote device

Initializing the Veritas Volume Manager

Use the following steps to create a two node SGeRAC cluster with CFS and Oracle:

1.Initialize the Veritas Volume Manager.

NOTE: CVM 5.x or later does not require rootdg.

2.Create the cluster ASCII file:

#cd /etc/cmcluster

#cmquerycl -C clm.asc -n ever3a -n ever3b

Edit the cluster file.

3.Create the cluster:

#cmapplyconf -C clm.asc

4.Start the cluster:

#cmruncl

#cmviewcl

The following output will be displayed:

CLUSTER STATUS

ever3_cluster up

48 Serviceguard Configuration for Oracle 10g, 11gR1, or 11gR2 RAC