HP Serviceguard Extension for RAC (SGeRAC) manual Configuration File Parameters

Limitations of cDSFs

•cDSFs are supported only within a single cluster; you cannot define a cDSF group that crosses cluster boundaries.

•A node can belong to only one cDSF group.

•cDSFs are not supported by CVM, CFS, or any other application that assumes DSFs reside only in /dev/disk and /dev/rdisk.

•cDSFs do not support disk partitions.

Such partitions can be addressed by a device file using the agile addressing scheme, but not by a cDSF.

For more information about Cluster-wide Device Special Files (cDSFs), see the Managing Serviceguard, Eighteenth Edition manual at www.hp.com/go/hpux-serviceguard-docs—> HP Serviceguard .

Configuration File Parameters

You need to code specific entries for all the storage groups that you want to use in an Oracle RAC configuration. If you are using LVM, the OPS_VOLUME_GROUP parameter is included in the cluster ASCII file. If you are using Veritas CVM, the STORAGE_GROUP parameter is included in the package ASCII file. Details are as follows:

OPS_VOLUME_GROUP The name of an LVM volume group whose disks are attached to at least two nodes in the cluster. The disks will be accessed by more than one node at a time using SLVM with concurrency control provided by Oracle RAC. Such disks are considered cluster aware.

Volume groups listed under this parameter are marked for activation in shared mode. The entry can contain up to 40 characters.

STORAGE_GROUP This parameter is used for CVM disk groups. Enter the names of all the CVM disk groups the package will use.

In the ASCII package configuration file, this parameter is called

STORAGE_GROUP.

Unlike LVM volume groups, CVM disk groups are not entered in the cluster configuration file, they are entered in the package configuration file.

NOTE: CVM 5.x or later with CFS does not use the STORAGE_GROUP parameter because the disk group activation is performed by the multi-node package. CVM 5.x and later without CFS uses the STORAGE_GROUP parameter in the ASCII package configuration file in order to activate the disk group (on HP-UX releases that support Veritas CFS and CVM). See “About Veritas CFS and CVM from Symantec” (page 15).

Do not enter the names of LVM volume groups in the package ASCII configuration file.

Cluster Communication Network Monitoring

This section describes the various network configurations for cluster communications in SGeRAC/10g/11gR1/11gR2 RAC cluster, and how the package configuration parameter CLUSTER_INTERCONNECT_SUBNET can be used to recover from Oracle cluster communications network failures in certain configurations.

Support for the Oracle Grid Infrastructure 11.2.0.2 HAIP with SGeRAC A.11.20

The following network configuration requirements must be met to use the Oracle Grid Infrastructure 11.2.0.2 HAIP feature in an SGeRAC cluster:

1.Any networks in the SGeRAC A.11.20 cluster configured for heartbeat must also be configured as Oracle cluster interconnect network in the Oracle Grid Infrastructure 11.2.0.2. Similarly

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