Serviceguard Extension for RAC Version A.11.18 Release Notes, 4th Edition, September 2008

NOTE: LVM version 2 (or later) is only supported with SGeRAC version A.11.18 on HP-UX
11i v3, and requires the Serviceguard September 2008 Patch (PHSS_38424 or later).
For more information, see the following documents located at http://docs.hp.com
• HP-UX Logical Volume Manager and MirrorDisk/UX Release Note HP-UX 11i v3
• Serviceguard Version A.11.18 Release Notes
Support for Cluster Interconnect Subnet Monitoring
In SGeRAC, the Cluster Interconnect Subnet Monitoring feature is used to monitor cluster
communication subnets. This feature requires the use of a package configuration parameter
known as the CLUSTER_INTERCONNECT_SUBNET. It can be set up to monitor certain subnets
used by applications that are configured as Serviceguard multi-node packages with the following
restrictions:
• Cluster Interconnect subnet monitoring can support up to 4 nodes.
• Only one CLUSTER_INTERCONNECT_SUBNET can be specified per multi-node package.
The CLUSTER_INTERCONNECT_SUBNET parameter works similar to the existing SUBNETpackage
configuration parameter. The most notable difference is in the failure handling of the subnets
monitored using these individual parameters. While the failure of subnets monitored using
SUBNET package configuration parameter is handled by halting the instance of the package on
the node where the subnet has failed, the failure of subnets monitored using
CLUSTER_INTERCONNECT_SUBNET package configuration parameter is handled by ensuring
at least one instance of the package remains running in the cluster.
NOTE: A package with the CLUSTER_INTERCONNECT_SUBNET parameter is available for both
Modular and Legacy packages. A package with this parameter can be configured only when all
nodes of the cluster are running SGeRAC version A.11.18 or higher. For more information, see
the Managing Serviceguard Fifteenth Edition user’s guide at http://docs.hp.com -> High
Availability -> Serviceguard.
Support for Veritas CFS and CVM
SGeRAC A.11.18 on HP-UX 11i v2 and 11i v3 supports Veritas VxVM, CVM and CFS 5.0 from
Symantec, with the following exceptions:
• SGeRAC supports a maximum of eight nodes for CVM and CFS.
NOTE: For the most up-to-date information, see the HP Serviceguard Storage Management Suite
Version A.02.00 for HP-UX 11i v3 Release Notes at http://docs.hp.com -> High Availability ->
HP Serviceguard Storage Management Suite.
Serviceguard Extension for Faster Failover, which is not supported with earlier versions of CVM
and CFS, is supported with CVM and CFS 5.0.
Serviceguard NFS Toolkit supports CFS 5.0. See the white paper Serviceguard NFS Toolkit Support
for CFS at http://docs.hp.com-> High Availability -> Highly Available NFS -> White Papers.
SGeRAC ships the system multi-node package SG-CFS-pkg for CVM/CFS 4.1 or later. The older
system multi-node package, VxVM-CVM-pkg, is used only for Veritas Cluster Volume Manager
3.5. SGeRAC also supports multi-node packages.
As of SGeRAC version A.11.17, only two multi-node packages are supported for managing
CVM/CFS: the mount point package, SG-CFS-MP-ID#, and the disk group package,
SG-CFS-DG-ID#. Both are shipped with Serviceguard.
What’s in this Version 11