Serviceguard Extension for RAC Version A.11.18 Release Notes, 2nd Edition, December 2007

Serviceguard Extension for RAC Version A.11.18 Release Notes
What’s in this Version
Chapter 1 17
This means that you are not required to migrate to agile addressing
when you upgrade to 11i v3, though you should seriously consider its
advantages (see the white paper The Next Generation Mass Storage
Stack under Network and Systems Management -> Storage Area
Management at docs.hp.com).
Migration involves modifying system and application configuration files
and scripts to use persistent device files and in some cases new
commands and options; the process is described in the white papers
Migrating from HP-UX 11i v2 to HP-UX 11i v3 and LVM Migration from
Legacy to Agile Naming Model HP-UX 11i v3 at http://docs.hp.com.
If you cold-install HP-UX 11i v3, sets of both legacy and persistent device
files are automatically created. In this case, by default the installation
process will configure system devices such as the boot, root, swap, and
dump devices to use persistent device files. This means that system
configuration files such as /etc/fstab and /etc/lvmtab will contain
references to persistent device files, but Serviceguard’s functioning will
not be affected by this.
NOTE It is possible, though not a best practice, to use legacy DSFs on some
nodes after migrating to agile addressing on others; this allows you to
migrate different nodes at different times, if necessary.
CAUTION You cannot migrate to the agile addressing scheme during a rolling
upgrade if you are using cluster lock disks as a tie-breaker, because that
involves changing the cluster configuration. But under certain
conditions, you can migrate the cluster lock device file names to the new
scheme without bringing the cluster down. For the requirements and a
procedure, see the section “Updating the Cluster Lock Configuration” in
chapter 7 of the Managing Serviceguard Fifteenth Edition user’s guide.
For more information about agile addressing, see following documents at
http://docs.hp.com:
•the Logical Volume Management volume of the HP-UX System
Administrator’s Guide (in the 11i v3 -> System Administration
collection)