Using Serviceguard Extension for RAC, 10th Edition, April 2013
Cluster Interconnect Monitoring Restrictions
In addition to the above limitations, the Cluster Interconnect Monitoring feature has the following
restriction:
• Cluster Lock device/Quorum Server/Lock Lun must be configured in the cluster.
Creating a Storage Infrastructure with LVM
In addition to configuring the cluster, you create the appropriate logical volume infrastructure to
provide access to data from different nodes. This is done with Logical Volume Manager (LVM) or
Veritas Cluster Volume Manager (CVM). LVM configuration is done before cluster configuration,
and CVM configuration is done after cluster configuration.
This section describes how to create LVM volume groups for use with Oracle data. Before configuring
the cluster, you create the appropriate logical volume infrastructure to provide access to data from
different nodes. This is done with Logical Volume Manager. Separate procedures are given for
the following:
• Building Volume Groups for RAC on Mirrored Disks
• Building Mirrored Logical Volumes for RAC with LVM Commands
• Creating RAC Volume Groups on Disk Arrays
• Creating Logical Volumes for RAC on Disk Arrays
The Event Monitoring Service HA Disk Monitor provides the capability to monitor the health of
LVM disks. If you intend to use this monitor for your mirrored disks, you should configure them in
physical volume groups. For more information, refer to the manual Using HA Monitors.
NOTE: When using LVM version 2.x, the volume groups are supported with Serviceguard. The
steps shown in the following section are for configuring the volume groups in Serviceguard clusters
LVM version 1.0.
For more information on using and configuring LVM version 2.x, see the HP-UX 11i Version 3:
HP-UX System Administrator's Guide: Logical Volume Management located at www.hp.com/go/
hpux-core-docs —> HP-UX 11i v3.
For LVM version 2.x compatibility requirements see the Serviceguard/SGeRAC/SMS/Serviceguard
Mgr Plug-in Compatibility and Feature Matrix at www.hp.com/go/hpux-serviceguard-docs
—> HP Serviceguard Extension for RAC.
NOTE: For more information, see the Serviceguard Version A.11.20 Release Notes at
www.hp.com/go/hpux-serviceguard-docs —> HP Serviceguard Extension for
RAC.
NOTE: The Oracle 11gR2 OUI allows only ASM over SLVM, ASM over raw device files, Cluster
File System for Clusterware files, and Database files.
Building Volume Groups for RAC on Mirrored Disks
The procedure described in this section uses physical volume groups for mirroring of individual
disks to ensure that each logical volume is mirrored to a disk on a different I/O bus. This kind of
arrangement is known as PVG-strict mirroring. It is assumed that your disk hardware is already
configured so that the disk can be used as a mirror copy, which is connected to each node on a
different bus other than the bus that is used for the other (primary) copy.
Creating Volume Groups and Logical Volumes
If your volume groups have not been set up, use the procedure in the next sections. If you have
already done LVM configuration, skip ahead to the section “Installing Oracle Real Application
Clusters” (page 48).
42 Serviceguard Configuration for Oracle 10gR2, 11gR1, or 11gR2 RAC