Re: [Xen-users] possible newbie-level question - updating kernels?

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Robert Rust wrote:

> How do I go about updating the kernel (and perhaps more importantly 
> the modules that go with it) in a DomU to match what the Dom0 is 
> running?
As Fajar says, just don't !

Use a different kernel for your DomU than used for Dom0.
Some of my guests use Pygrub without problem. Others have problems 
and won't boot - so for those I just copy the kernel and initrd* to a 
folder on Dom0 alongside the guest config file and use the boot= and 
root= lines as you are probably doing now. This latter method does 
mean you have to copy one or two files (and possibly update the 
config file) whenever you update the kernel or do anything else that 
updates the initrd - but at least you are booting something that's 
specific to the virtual machine.
* I used to use the shared Dom0 kernels until I twigged that this 
also meant I was using an initrd in the guest that was actually built 
for the Dom0.
The initrd is more machine specific than the kernel.

--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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