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

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 cmquerycl, 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:
• cmquerycl—This is an existing command which is enhanced with option –N to query available
network configuration and generate 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 cmquerycl, cmpreparestg, and cmdeploycl commands 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.
New behavior during online reconfiguration of the package
Serviceguard supports non-disruptive online modification of packages, so the packages will not
fail due to any error during online reconfiguration. For more information see Managing HP
Serviceguard A.12.00.00 for Linux manual.
License Information
Serviceguard for Linux A.12.00.00 requires licenses on per-socket basis.
The commands used to know about license information are as follows:
• cmgetlicense— This command displays the currently installed Serviceguard License
information. When you invoke this command with "-f line" option, it displays the currently
installed Serviceguard License information in machine parsable output format. If more than
one type of license keys are present, it displays information about the higher license. If more
than one similar type of permanent licenses are present, it displays the count of licenses present.
• cmsetlicense— This command renews the Serviceguard license at any time within 90 days
or after 90 days of license expiry. You can also run cmsetlicense command while the
node is up and running.
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