On fc6 or RHEL or Centos, there is no specific source for xen-kernel.  
Xen kernel and the non-xen kernel are built from the same source.  So 
download the source for the  kernel - kernel-xxxx.src.rpm - patch it and 
rebuild. You should have a xen and generic kernel with Lustre cluster 
file system support in it. 
 
--Sadique 
 
gjrama@xxxxxxx wrote: 
> Hello all, 
> 
> Can anyone tell me where I can find documentation about patching a 
> running Xen kernel? 
> I have a system running 2.6.20-1.3002.fc6xen kernel.  I'd like to 
> patch this kernel to run the Lustre 
> cluster file system software.  All of the references I find describe 
> doing this from source, but 
> I don't have the source for my xen kernel. 
> 
> Ideas welcome, 
> 
> gjrama 
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