HP Serviceguard Version A.11.19 Release Notes, October 2009

IMPORTANT: If you are upgrading from A.11.16 on HP-UX 11i v2 , you must
first install patch PHSS_31072 or a later patch.
See also the requirements listed above under “Upgrading from an Earlier Serviceguard
Release” (page 62), and the Rolling Upgrade Exceptions that follow.
Rolling Upgrade Exceptions
HP-UX Cold Install
A rolling upgrade cannot include a cold install of HP-UX on any node. A cold install
will remove configuration information; for example, device file names (DSFs) are not
guaranteed to remain the same after a cold install.
HP Serviceguard Storage Management Suite and standalone CVM product
In many cases you cannot do a rolling upgrade if you are upgrading the HP
Serviceguard Storage Management Suite.
Specifically you cannot do a rolling upgrade if you are using the Veritas clustering
capabilities — CVM and CFS. In the case of CVM, this applies whether you purchase
it as part of a Storage Management bundle, or as a standalone product.
For more information, see the Veritas 5.0 Installation Guide and the HP Serviceguard
Storage Management Suite A.02.01 Release Notes at docs.hp.com -> High
Availability -> HP Serviceguard Storage Management Suite.
Migrating to Agile Addressing if Using Cluster Lock Disk
You cannot migrate to the HP-UX 11i v3 agile addressing scheme for device files during
a rolling upgrade if cluster lock disks are used as a tie-breaker, because that involves
changing the cluster configuration. See “Updating the Cluster Lock Configuration” in
Chapter 7 of Managing Serviceguard for instructions in this case. See “About Device
Special Files (DSFs)” (page 47) of these Release Notes for more information about agile
addressing.
Upgrading from an Earlier Release if You Are Not Using Rolling Upgrade (Non-Rolling
Upgrade)
If your cluster does not meet the requirements for a rolling upgrade, or you decide not
to use rolling upgrade for some other reason, you must bring down the cluster
(cmhaltcl) and then upgrade Serviceguard and HP-UX on the nodes. See Appendix
D of the Managing Serviceguard manual.
You can perform a non-rolling upgrade (that is, an upgrade performed while the cluster
is down) from any supported HP-UX/Serviceguard release to any supported
HP-UX/Serviceguard release. See the support matrix at docs.hp.com -> High
Availability -> Support Matrixes.
Installing Serviceguard on HP-UX 67