HP Serviceguard for Linux Version A.11.19 Release Notes, October 2009

Features Introduced Before A.11.19
New Features First Introduced in Serviceguard for Linux A.11.18 Patches
The following features were first introduced in patches to A.11.18:
• Serviceguard supports DM-MPIO; see “Support for DM-MPIO” (page 29).
• Serviceguard supports cross-subnet configurations. See “About Cross-Subnet
Configurations” (page 29).
• Serviceguard provides a means of automatically migrating existing (legacy)
packages to modular packages. See “Migrating Legacy to Modular Packages”
(page 31).
• Further package capabilities, additional to those introduced in Serviceguard A.11.19,
are described under“Other Package Changes” (page 32).
• You can configure an alternate subnet for communication between the cluster
nodes and a Quorum Server. See “Alternate Quorum Server Subnet” (page 33).
• Serviceguard for Linux supports HP Integrity Virtual Machines (HPVM) version
3.5, 4.0, or 4.1, and VMware ESX Server (VMware) versions 3.5 and 3.0.2. See
“Support for HPVM, VMware ESX Server, and Xen Virtual Machines” (page 33).
• A quorum server can now support up to 150 clusters comprising up to 300 nodes.
The previous limits were 50 clusters and 100 nodes. The new limits are supported
in Quorum Server versions A.02.00.04 and later.
• In addition to the new Serviceguard demons introduced in A.11.19 (see above),
new demons were introduced in a patch to A.11.18 (see Chapter 3 of Managing
Serviceguard for Linux for more information about Serviceguard demons):
— Lock LUN Daemon: cmdisklockd
If a lock LUN is being used, cmdisklockd runs on each node in the cluster
and is started by cmcld when the node joins the cluster.
— Network Manager Daemon: cmnetd
This daemon monitors the health of cluster networks, and handles the addition
and deletion of relocatable package IP addresses, for both IPv4 and IPv6
addresses.
— Utility Daemon: cmlockd
Runs on every node on which cmcld is running. It maintains the active and
pending cluster resource locks.
— Cluster SNMP Subagent (optionally running):cmsnmpd
• Hostnames for Serviceguard cluster nodes can be up to 39 characters (bytes) long.
(The former limit was 31 characters.)
28 Serviceguard for Linux Version A.11.19 Release Notes