[et-mgmt-tools] Need help on changing DomU kernel

[Michael DeHaan]

Peter Wright wrote:
> Radhesh Kamath wrote:
>> Hi,
>>
>> I needed help with changing the kernel on a DomU using virt-manager.
>>
>> I had an initial install of a Fedora core 7 domU. Now I have added 
>> some patches of my own to the standard domU kernel and I want to use 
>> it as the the new DomU. How can I do it using virt-manager?
>>
> Have you already compiled your locally patched kernel and tested it?  
> If you have done that bit, which is the hard part in my opinion, then 
> you can create a new distro using this kernel and initrd pretty easily 
> in cobbler.  check out the man page for cobbler (man cobbler) and read 
> the section on creating a new distro.  if you are having specific 
> problems let us know!
>
> -pete
>

I think he's asking about how to change the kernel of an existing 
virtual machine without reinstalling it.

After installation is complete (i.e. on subsequent boots), Xen gets the 
kernel/initrd information from the bootloader, so all you should really 
need to do is upgrade the kernel from inside the virtual machine as if 
it were any other kernel -- and restart the machine.   The next time it 
comes up, Xen should find the new kernel.

--Michael