topic Re: swinstall & kernel parameter changes in Operating System - HP-UX

swinstall & kernel parameter changes

MikeL_4 — Tue, 18 May 2004 15:01:59 GMT

I have some sowtware updates that need to be applied for some new Peoplesoft upgrades, and along with it some kernel parameter changes.

What system file can I make the changes in,
/stand/system or /stand/build/system to get
swinstall to pick them up when it rebuilds the kernel for the patches ??

thanks

Re: swinstall & kernel parameter changes

Sanjay_6 — Tue, 18 May 2004 15:09:44 GMT

Hi,

It is not a good idea to combine the two. If you run into a problem, it may become difficult for you to indetify the cause of the problem since there are more number of variables involved.

Hope this helps.

Regds

Re: swinstall & kernel parameter changes

Sridhar Bhaskarla — Tue, 18 May 2004 15:09:58 GMT

Hi,

swinstall uses /stand/system to build the kernel (from the man page). However, it will not pick up the changes you made to the system file.

You will have to schedule two reboots. One for the kernel change and the other for the patches.

-Sri

Re: swinstall & kernel parameter changes

Michael Tully — Tue, 18 May 2004 22:31:13 GMT

Just a further comment on this:
Suggest you do the kernel changes before installing the patches. That way you know that your system is reasonably stable. The next thing to is to cut an ignite tape before applying any patches. If something does go wrong you can recover from the tape. To create the tape:
# /opt/ignite/bin/make_tape_recovery -x inc_entire=vg00 -I -v -a /dev/rmt/?mn

(substitute the ?mn for your device, and make sure you use the no-rewind device)

Re: swinstall & kernel parameter changes

MikeL_4 — Wed, 19 May 2004 09:05:50 GMT

I always do a make_recovery tape before any maintenance, thats a no brainer...

these patches and kernel changes were already applied, individualy on our development server over a week ago and we have had no problems.

I just wanted to save myself and extra 45 minutes of time working tonight doing an extra reboot...

Re: swinstall & kernel parameter changes

Dani Seely — Wed, 19 May 2004 09:38:30 GMT

Hey Mike,
I would suggest you keep these two activiites separate. Perform your software upgrade, performing a reboot if needed/required, see the recommendations in your software docs.

Most likely the kernel paramater changes will require a reboot. I suggest performing a backup first, installing your software upgrade, check your product to ensure the upgrade worked and your application still functions, then perform the kernel parameter changes, then again check your product to ensure the upgrade worked and you application still functions properly. If everything is working, I suggest performing another backup and keeping this tape marked clearly and protected so you won't have to go through this process again if something fails later.

Good luck!