HP Tru64 Unix Release Notes for Version 5.1B-6 (5900-1150)

Creation of Some MFS File Systems Depends on Version Switch
During the installation of this kit, MFS file systems that are 4 GB and larger (or 2 GB and larger
if a 1024-byte sector size is used) cannot be created until after the version switch is thrown. See
the Patch Kit Installation Instructions for information about the version switch.
Workaround Saves Files to Enable Patch Kit Removal
If you upgrade the operating system and install a patch kit within the same roll, the contents of
the patch backups are inadvertently removed. The result is that the patches most recently installed
cannot be removed because the backups are missing.
The following procedure saves then restores backups so they are available if you later decided
to remove the patch kit:
1. Create backup files of the /backup and /doc directories after the postinstall step
(clu_upgrade postinstall) as follows:
# cd /var/adm/patch/backup
# tar cvf /var/adm/patch/BACKUP.tar *
# cd /var/adm/patch/doc
# tar cvf /var/adm/patch/DOC.tar *
2. After the switch step (clu_upgrade switch) untar the files you created in step 1:
# cd /var/adm/patch/backup
# tar xvf /var/adm/patch/BACKUP.tar
# cd /var/adm/patch/doc
# tar xvf /var/adm/patch/DOC.tar
This restores the files under the following directories:
• /var/adm/patch/backup
• /var/adm/patch/doc
Enabling the Version Switch After Installation
Some patches require you to run the versw -switch command to enable the new functions
delivered in those patches. (See the Patch Kit Installation Instructions for information about version
switches.) Enter the command as follows after dupatch has completed the installation process:
# versw -switch
The new functionality is not available until after you reboot your system. You do not have to
run the versw -switch command, but if you do not, your system cannot access the functionality
provided in the version-switch patches.
Script Required to Reverse Version Switch
If you enabled version switches as described in “Enabling the Version Switch After Installation”,
you must run the /usr/sbin/versw_enable_delete script before attempting to remove
Version 5.1B-4. The steps for running this script require a complete cluster or single system
shutdown, so choose a time when a shutdown has the least impact on your operations. The
following steps describe the procedure:
1. Make sure that all phases of the installation process have been completed.
2. Run the /usr/sbin/versw_enable_delete script:
# /usr/sbin/versw_enable_delete
3. Shut down the entire cluster or the single system.
4. Reboot the entire cluster or the single system.
Cluster-Specific Installation and Removal Release Notes 23