topic Re: Installing kernel patches and changing kernel parameter(s) in Operating System - HP-UX

Installing kernel patches and changing kernel parameter(s)

Joe Profaizer — Wed, 16 Jan 2002 15:05:41 GMT

Can I get by with one reboot if I make some kernel parameter changes and also install a kernel patch (or any patch that requires a reboot for that matter)? I'm making one parameter change and upgrading my firmware to 41.39 on L1000s and L2000s.

Currently, I'm planning on two reboots just to be safe. What is HP's policy or stand on this?

Thanks,

...Joe

Re: Installing kernel patches and changing kernel parameter(s)

Patrick Wallek — Wed, 16 Jan 2002 15:11:21 GMT

I would go ahead and do it with 2 reboots.

By doing that you have a vmunix.prev kernel with the modifications of the patch or parm change, whichever you decide to do first, just in case the 2nd procedure screws up the kernel.

If you were doing a bunch of patches that require reboots, then you can put all of those into a depot and just do one reboot.

But in this case, let it reboot twice.

Re: Installing kernel patches and changing kernel parameter(s)

Christopher Caldwell — Wed, 16 Jan 2002 15:12:50 GMT

The tune and patch is doable in one pass. You just tell the box not to reboot/move the new kernel into place.

Personally I don't recommend it if you have the time to do it in two passes.

The problem lies in the case that either the kernel rebuild for the tune or the kernel rebuild from the patches can fail. If you do the patch and tunes at the same time, it might be harder for you to figure out which action is causing the problems.

Hey, but you've gotta ask yourself: do you feel luck ;-)

Re: Installing kernel patches and changing kernel parameter(s)

Sridhar Bhaskarla — Wed, 16 Jan 2002 15:13:25 GMT

Hi Joe,

You need to do them seperately. Combining them will not work.

I would recommend you to do it seperately.

-Sri

Re: Installing kernel patches and changing kernel parameter(s)

Uday_S_Ankolekar — Wed, 16 Jan 2002 15:17:34 GMT

Hi,

Anything related to changes in Kernel it makes a copy of existing Kernel as .prev. If you want to have new Kernel then rebooting is very much necessary. Secondly while applying multiple patches one reboot would do.

In your current scenario I would go for two reboots.

-USA..