3PAR InForm OS 2.3.1 Upgrade Pre-Planning Guide

Release 2.3.1 Upgrade Pre-Planning Guide InForm OS Version 2.3.1

5.2 Restoring the Veritas DMP Link Restore Interval

If you are using Veritas DMP, use the following commands to change the link restore interval

to the previous setting on storage server hosts after completing an online update. The

following procedure must be repeated for each host server connected to the InServ Storage

Server and using Veritas DMP.

Use the following procedure to restore the link restore interval to its original setting:

1 Stop the daemon.

2 Restart the daemon with the interval set to what it was previously.

3 Verify the daemon is running with the interval set to the prior setting.

6.0 Sun Cluster Configuration Guidelines

There are some InForm OS online configuration rules to be aware of for Sun cluster

configurations.

■ InForm OS online upgrades with attached Sun cluster hosts are not supported by 3PAR for

major InForm OS releases. (Example 2.2.4 to 2.3.1 is considered a major InForm OS release).

■ As of 2.2.4 MU2, online maintenance updates can be successfully performed using the

“pause” option for the upgrade, e.g. 2.2.4 MU2 to 2.2.4 MU4.

Implementing the “pause” option for an online maintenance update will cause a wait for user

input in between each node reboot needed during an online InForm OS update. This pause

time in the upgrade process is used to allow all of the I/O paths to all of the Sun Cluster nodes,

for all of the presented LUNs to recover (failback). In Sun Cluster, this is a function of Solaris

SSTM MPxIO. Failure to wait for all I/O paths to return results in fatal

I/O errors and off-lining

of Sun Cluster “resources”.

vxdmpadm stop restore

vxdmpadm start restore interval=<prior setting>

vxdmpadm stat restored