HP Serviceguard Version A.11.19 Release Notes, October 2009

are supported, but will be inactive unless you turn off native multipathing (in that case
they will function as they did in previous releases of HP-UX).
PCI Error Recovery
PCI Error Recovery enables an HP-UX system to detect, isolate, and automatically
recover from a PCI error. PCI Error Recovery is enabled on HP-UX 11i v3 systems by
default, but HP recommends that it remain enabled in a Serviceguard cluster only if
your storage devices are configured with multiple paths and you have not disabled
HP-UX native multipathing.
IMPORTANT: If your storage devices are configured with only a single path, or you
have disabled multipathing, you should disable PCI Error Recovery; otherwise
Serviceguard may not detect when connectivity is lost and cause a failover.
For instructions on using the pci_eh_enable parameter to disable PCI Error Recovery,
see the “Tunable Kernel Parameters” section of the latest edition of the PCI Error Recovery
Product Note in the High Availability collection on docs.hp.com.
Online Replacement of LAN Cards Requires Patch
Before you can replace a LAN card online (without bringing down the cluster) as
described under “Replacing LAN or Fibre Channel Cards” in Chapter 8 of Managing
Serviceguard, you must apply patch PHNE_35894. See “Patches for this Version”
(page 68) and “QXCR1000575890: OLR of a LAN Card in SG cluster fails on HP-UX
11i v3” (page 69).
For more information about replacing interface cards online, see the Interface Card OL*
Support Guide for HP-UX 11i v3, at http://docs.hp.com -> High Availability
-> System Administration.
What’s in this Release
This release of Serviceguard A.11.19 runs on both HP-UX 11i v2 and 11i v3, and adds
new functionality. There are some platform-dependent differences.
See the subsections that follow for details; see also the “Announcements” (page 11).
For information about documentation, see “Documents for This Version ” (page 50).
New Features for October 2009 Patches
Serviceguard A.11.19, with the patches listed under “October 2009 Patches” (page 11),
provides the following new capabilities:
What’s in this Release 19