HP Tru64 UNIX Version 5.1B-2 and Higher Patch Kit Installation Instructions (March 2009)

The clu_upgrade roll command performs the following tasks:

• Verifies that the member is not the lead member, that the member has not already been

rolled, and that the member is in single-user mode. Verifies that rolling the member will

not result in a loss of quorum.

• Backs up the member's member-specific files.

• Sets up the it(8) scripts that will be run on reboot to perform the roll.

• Reboots the member. During this boot, the it scripts roll the member, build a customized

kernel, and reboot with the customized kernel.

Note:

If you need to add a member to the cluster during a rolling upgrade, you must add the member

from a member that has completed its roll.

If a member goes down (and cannot be repaired and rebooted) before all members have rolled,

you must delete the member to complete the roll of the cluster. However, if you have rolled all

members but one, and this member goes down before it has rebooted in the roll stage, you must

delete this member and then reboot any other member of the cluster. (The clu_upgrade

command runs during reboot and tracks the number of members rolled versus the number of

members currently in the cluster; clu_upgrade marks the roll stage as completed when the

two values are equal. That is why, in the case where you have rolled all members except one,

deleting the unrolled member and rebooting another member completes the roll stage and lets

you continue the rolling upgrade.)

Switch Stage

Run LevelWhere RunCommand

multi-user mode

All members must be up and

running

any member

clu_upgrade switch

You can override this requirement by using the -f option to the switch command. However, all members' boot disks

must be accessible for the -f option to work.

The switch stage sets the active version of the software to the new version, which results in

turning on any new features that had been deliberately disabled during the rolling upgrade. (See

“Version Switch” for a description of active version and new version.)

The clu_upgrade switch command performs the following tasks:

• Verifies that all members have rolled, that all members are running the same versions of the

base operating system and cluster software, and that no members are running on tagged

files.

• Sets the new version ID in each member's sysconfigtab file and running kernel.

• Sets the active version to the new version for all cluster members.

Note:

After the switch stage completes, you must reboot each member of the cluster, one at a time.

Clean Stage

Run LevelWhere RunCommand

multi-user modeany member

clu_upgrade clean

The clean stage removes the tagged (.Old..) files from the cluster and completes the upgrade.

Rolling Upgrade 67