[CentOS-virt] Testing new Xen Version and rollback.

Thu Oct 8 23:29:23 UTC 2009
Manuel Wolfshant <wolfy at nobugconsulting.ro>

On 10/09/2009 01:57 AM, Ben M. wrote:
> I do not have a comprehensive grasp on startup scripts, as well as what 
> files are not rolled into the kernel itself.
> In other words, I don't understand yet when a new kernel is installed, 
> whether there are any support files that come with it, or whether 
> everything that, for instance, the Xen kernel needs, are entirely within 
> that kernel file (hardware drivers).
the normal centos kernel comes with lots of drivers compiled as modules. 
using tar tjf on the kernel provided by stacklet will let you know what 
modules does this one include...

> If it is just a matter of having a section for it in grub.conf.
depmod, used as described on the site, will not touch the rest of your 
system. and note that if using the new kernel only inside DomU (thus 
leaving Dom0 intact) AND using the first method that is described on 
that page, you do not have to touch ANY grub.conf at all ( by using the 
kernel directive inside the VM's config file, as described in the first 
part of the page)

actually the instructions given over there are pretty sane and - if 
respected - will not harm in any way the existing systems (either Dom0 
or DomU). unlike gitco, which, as you have seen, has a much more 
invasive approach.