topic Re: copying kernel between MC/SG nodes in Operating System - HP-UX

copying kernel between MC/SG nodes

Murat SULUHAN — Thu, 26 May 2005 10:17:55 GMT

Hi

When I configured a new kernel in one of the MC/SG nodes, I don't want to reconfigure the kernels in the other nodes.

How can I copy the configured kernel to the other nodes. Nodes are completely identical.

Is it enough only copying vmunix?

Regards
Murat

Re: copying kernel between MC/SG nodes

Patrick Wallek — Thu, 26 May 2005 10:31:30 GMT

Personally, I would NOT copy the kernel.

I would make the changes manually and recompile the kernel on the other machines.

No, copying vmunix would NOT be enough. I know you would need /stand/system and there are probably other files you would need as well.

Look for any files with the same time stamp as vmunix.

If you do copy, make absolutely SURE you have a good backup kernel, vmunix.prev.

Re: copying kernel between MC/SG nodes

melvyn burnard — Thu, 26 May 2005 10:34:30 GMT

I would suggest rather copy /stand/system and rebuild the kernel on the second node using that system file
Be careful though

Re: copying kernel between MC/SG nodes

A. Clay Stephenson — Thu, 26 May 2005 10:52:21 GMT

As mentioned, you should copy /stand/system and build a new kernel locally. You will also need the dlkm directory. You never want to be in the position of possibly not being able to build a kernel and that's why it's dumb to simply copy /stand/vmunix.

Re: copying kernel between MC/SG nodes

Duncan Edmonstone — Thu, 26 May 2005 11:42:45 GMT

Are you on HPUX 11.23 (11iv2)?

If so you can use the kconfig command to maintain the two kernels in sync.

Make your changes on 1 machine then issue:

kconfig -e /tmp/mykernel.cfg

Copy that file to the other host and then run:

kconfig -i /tmp/mykernel.cfg

I'd advise you to have a good read of the kconfig man page to fully understand all the implications of this.

HTH

Duncan

Re: copying kernel between MC/SG nodes

Kent Ostby — Thu, 26 May 2005 15:05:19 GMT

the other question is :

What are all the changes involved in the new kernel ?

And

Are you sure these kernels are identical ?

If you have different drivers or patch levels between the machines, you may cause a large problem by copying the kernel over.

Re: copying kernel between MC/SG nodes

Murat SULUHAN — Mon, 30 May 2005 01:04:23 GMT

Hi all

First of all thanks for all of the responses

I think I don't copy or like that before I try in the test system and I haven't one.

I will use traditional method.

Best Regards
Murat SULUHAN

Sorry for delayed update