HP Serviceguard A.12.00.00 for Linux Release Notes, March 2014

Serviceguard load sensitive placement of packages
Serviceguard load sensitive placement for packages enables packages to be placed in such a
way that package weights are distributed evenly among the cluster nodes based on each node's
capacity. For more information about load balancing see Managing HP Serviceguard A.12.00.00
for Linux manual.
Veritas Volume Manager (VxVM)
Serviceguard supports the use of Veritas Volume Manager (VxVM) and Veritas File System (VxFS)
to meet the data management needs of applications configured in packages. VxVM is a storage
management solution that allows you to manage physical and logical devices. VxFS is yet another
constituent of Veritas Storage Foundation product suite which provides the file system management
functionality. For more information on VxVM and VxFS, see Managing HP Serviceguard A.12.00.00
for Linux.
For information on configuring VxVM Diskgroups for Serviceguard Extended Distance Cluster
product see HP Serviceguard Extended Distance Cluster for Linux A.12.00.00 Deployment Guide.
btrfs file system
Serviceguard supports the use of btrfs file system module with the packages managed in the
cluster. btrfs is a new copy on write (CoW) file system for Linux aimed at implementing advanced
features while focusing on fault tolerance, repair, and administration.
For more information on btrfs file system see Managing HP Serviceguard A.12.00.00 for Linux
manual.
Scalable cluster: 32 nodes support
From Serviceguard for Linux A.12.00.00 version onwards the node support in Serviceguard is
extended up to 32, so now the cluster can have upto 32 nodes. For more information see Managing
HP Serviceguard A.12.00.00 for Linux manual.
Easy deployment to set up cluster using cmdeploycl, cmpreparestg, and cmdeploycl commands
Serviceguard for Linux A.12.00.00 offers quick and easy configuration of a cluster using just a
few commands.
Easy deployment is a feature that provides quick and simple way to create a cluster. It automates
the security, shared storage, and networking configuration required by the package and cluster,
it also simplifies cluster lock configuration using these commands:
• cmdeploycl—Using this command you can query available network configuration and
generates network template.
• cmpreparestg—Using this command you can create or modify LVM, VxVM storage shared
between Serviceguard nodes.
• cmdeploycl—Using this commands you can deploy the cluster with the previously generated
network and storage configuration.
For more information on cmdeploycl, cmpreparestg, and cmdeployclcommands see
corresponding Manpages.
Support for IPV6 address
Serviceguard allows you to choose either the IPv4 or the IPv6 address family for any subnet
configured into the cluster, including subnets that carry the cluster heartbeat, and those connected
to a Quorum Server. For more information about these modes including restrictions for IPv6–only
and mixed modes see Managing HP Serviceguard A.12.00.00 for Linux manual.
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