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

c. Roll the member:
# clu_upgrade roll
If you are performing parallel rolls, use the -f option with the clu_upgrade roll
command. This option causes the member to automatically reboot without first
prompting for permission:
# clu_upgrade -f roll
The roll command verifies that rolling the member will not result in a loss of quorum.
If a loss of quorum will result, then the roll of the member does not occur and an error
message is displayed. You can roll the member later, after one of the currently rolling
members has rejoined the cluster and its quorum vote is available.
If the roll proceeds, the member is prepared for a reboot. If you used the -f option, no
prompt is displayed; the reboot occurs automatically. If you did not use the -f option,
clu_upgrade displays a prompt that asks whether you want to reboot at this time.
Unless you want to examine something specific before you reboot, enter yes. (If you
enter yes, it may take approximately half a minute before the actual reboot occurs.)
Perform parallel rolls to minimize the time needed to complete the roll stage. For
example, on an eight-member cluster with a quorum disk, after rolling the lead member,
you can roll four members in parallel.
1) Begin the roll stage on a member. (The lead member was rolled during the install
stage. You do not perform the roll stage on the lead member.)
2) When you see a message similar to the following, begin the roll stage on the next
member:
*** Info ***
You may now begin the roll of another cluster member.
If you see a message that begins like the following, it is probably caused by the
number of currently rolling members that contribute member votes.
*** Info ***
The current quorum conditions indicate that beginning
a roll of another member at this time may result in
the loss of quorum.
In this case, you have the following options:
• You can wait until a member completes the roll stage before you begin to roll
the next member.
• If there is an unrolled member that does not contribute member votes, you
can begin the roll stage on it.
d. Continue to roll members until all members of the cluster have rolled. Before starting
each roll stage, wait until you see the message that it is all right to do so.
When you roll the last member, you will see a message similar to the following:
*** Info ***
This is the last member requiring a roll.
Rolling Upgrade 53