Serviceguard Extension for RAC Version A.11.19 Release Notes (May 2010)

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 at http://www.hp.com/go/hpux-core-docs —> HP-UX 11i v3 —> white
papers).
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 HP-UX 11i v2 to 11i v3 Mass Storage Stack Update Guide and LVM Migration from Legacy
to Agile Naming Model HP-UX 11i v3 at http://www.hp.com/go/hpux-core-docs —> HP-UX
11i v3 —> white papers.
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 continue to use legacy DSFs on some nodes after migrating
to agile addressing on others. If necessary, this allows you to migrate different nodes at different
times.
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 latest edition of Managing Serviceguard .
For more information about agile addressing, see following documents at http://www.hp.com/
go/hpux-core-docs —> HP-UX 11i v3:
• HP-UX System Administrator's Guide: Logical Volume Management HP-UX 11i Version 3 (under
User guide section)
• HP-UX 11i v3 Installation and Update Guide (under Setup and install - general section)
• white papers:
• The Next Generation Mass Storage Stack
• HP-UX 11i v2 to 11i v3 Mass Storage Stack Update Guide
• HP-UX 11i v3 Native Multi-Pathing for Mass Storage
• LVM Migration from Legacy to Agile Naming Model HP-UX 11i v3
See also http://www.hp.com/go/hpux-core-docs —> HP-UX Manpages for HP-UX 11i
v3.
Native Multi-pathing, Veritas DMP, and Related Features
The HP-UX 11i v3 I/O subsystem provides mult-ipathing and load balancing by default. This is often
referred to as native multi-pathing. When CVM is installed on HP-UX 11i v3, DMP is the only supported
mult-ipathing solution, and is enabled by default.
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