rollback after installing HPUX patch bundles

[ikeleong]

Hello;

On yearly basis we apply hpux patches supplied by our HP support folks.

I've never had to rollback from a hpux patch bundle. So do you rollback if the patch bundle causes issues and how do you deal with dependency issues when you rollback

[Torsten.]

IMHO a very good procedure:

Create a DRD clone of your vg00, patch it.

Once you have the possibility, activate (boot) the clone and test.

In case of problems simply boot the original vg00.

[Dennis Handly]

Make sure you take an ignite backup that you keep longer.

[Steven E. Protter]

Shalom,

I use one. I restore the Ignite make_tape_recovery or make_net_recovery backup I did before the patch set.

If you created a patch bundle and did not remove superseded patches, you can remove the patch set by bundle with swremove.

You can remove individual patches if dependency problems are not created.

After committing patches with the cleanup command your options are limited to Ignite.

SEP

[Avinash20]

Option 1 - using swremove to uninstall patch bundle
If the system is bootable and you can login to the system, use swremove to uninstall the installed patch bundle and reboot the system.

Generate a list of patches to be removed which were installed as part of this change
# swlist -l product -a install_date | grep 2007MMDD | awk '{print $1}' > /tmp/patches_to_remove.txt

In the above line 2007MMDD corresponds to the install date of the patch bundles. For example if
the install date was Jan 17 2007, then 2007MMDD should read 20070117

Remove the patches
# swremove -x mount_all_filesystems=false -x autoreboot=true -f /tmp/patches_to_remove.txt
Progress of the patch removal can be viewed in the swagent.log (until the reboot takes place), eg:
# tail -f /var/adm/sw/swagent.log
Once the system has rebooted, remove the bundle definitions:
3) Now generate the bundle definition list including the revision details
# swlist â l bundle â a install_date | grep 2007MMDD | awk '{print $1}' > /tmp/bundle_def
For every bundle get the revision details
# swlist â a revision â l bundle â bundle nameâ
4) Remove the bundle definitions
# swremove â x mount_all_filesystems=false â Bundle nameâ .,r=â bundle revisionâ
e.g. # swremove GOLDAPPS11i.,r=B.11.11.0509.429
** Note: remember the â .â After the bundle name

Option 2: Recover from Ignite backup !!

Best of Luck !!

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Refer: http://forums11.itrc.hp.com/service/forums/helptips.do?#33

[Avinash20]

If system is not bootable
1) Boot from previous kernel and remove offending patch using swremove as stated above

[Bob E Campbell]

This is a tricky concept, but HP-UX does not support rollback of bundles. It only supports rollback of patches.

If you install a patch and later remove it, you get back to the original state.

If you install a patch bundle and later remove it, you *might* get back to the original state.

The difference is that the patch is atomic, while the bundle is comprised of parts. It is possible that some of those parts were installed before the bundle, and yet removing the bundle may cause those preexisting patches to be removed.

For that reason I recommend using the DRD and recovery image options described above. Failing that, review the swagent.log and remove the patches that were installed rather than selecting the bundle for removal.

[sujit kumar singh]

Hi,

have an Ignite backup and in case you need the roll-back restore that, actually that would be a much more cleaner approach that i think.

Other part is that if you have a mirror of the OS Disk then yiu can simply unplug one of the disks when you upgrade the patch, for roll-back boot the disk from the removed disk and do a mirroring on the disk that you have used for patching.
regards
sujit

[Suraj K Sankari]

Hi,

You can't rollback the bundle but you can rollback patch.
with swremove command you can uninstall/remove the patch from a system.
If you don't have DRD then better you go for Ignite backup.

Suraj