how do I setup a Ubuntu domU on a Fedora Core 8 XEN server?

[Chris Cohen]

On Tuesday 29 July 2008 08:47:06 Rudi Ahlers wrote:
> On Sat, Jul 26, 2008 at 6:28 PM, Shizzle Cash <shizzlecash at gmail.com> wrote:
> >  On Jul 26, 2008, at 7:08 AM, Rudi Ahlers wrote:
> >
> > Hi all,
> >
> >> I'm looking for instructions on how to setup a Ubuntu domU XEN guest, on
> >> a Fedora Core 8 XEN server.
> >>
> >> Before you tell me to try the FC mailing list, I have asked on the
> >> CentOS mailing list already, and was reffered here. I got some nice
> >> tutorials on how to setup a Ubuntu XEN server, and then install the
> >> Ubuntu XEN guest, but that doesn't work on a different Linux distro.
> >>
> >> Can someone please direct me to a working tutorial on how to get it to
> >> work?
> >
> > Rudi,
> >
> > I'm not sure if you've run across this yet, you might very-well have.
> >  First off, without knowing exactly what problem you're having, there's
> > not much people can do for you on this list.  I would guess that most
> > people in here haven't set-up a XEN system.  I myself have not, but I
> > figured maybe I could at least help find a solution.  I ran across this
> > link in the Ubuntu community wiki that, while it doesn't specifically
> > address your issue, it might point you in the right direction.  Actually
> > I have 2 links for you.
> >
> > The first is to an ubuntuforums post that I'm wondering if it is yours:
> >
> > http://ubuntuforums.org/showthread.php?t=828157
> >
> > If not, it sounds like you're not the only one having issues using the
> > latest release as a DomU guest.
> >
> > The second is the wiki link:
> >
> > https://help.ubuntu.com/community/Xen
> >
> > The wiki link is more about using Ubuntu as the XEN host with others as
> > guests.  However, I'm wondering if the problem lies in Ubuntu needing to
> > be tweaked a little to run under a Fedora DomU host. I notice that in the
> > "Stuff to check when converting a disk image to a DomU" in the wiki, it
> > mentions some specific things you have to do to get Gentoo running on an
> > Ubuntu host.  I'm wondering if something similar is needed for Ubuntu
> > running on Fedora.  While I know it's not an "answer" I'm hoping it might
> > at least be a pointer to a potential solution.
> >
> > The only other thing I can think of (and one that you've probably already
> > taken into account), is to make sure you're using the same architectures
> > for your host and guest OS (e.g. i386 and i386).  I know I've been bitten
> > by silly stuff like that in the past.  Since XEN is kernel-based, I would
> > think mis-matched architectures would be problematic.  Again, no offense
> > intended by this, I just know I've beaten my head over problems just to
> > have the solution be something really simple that should've been obvious
> > to me, but for some reason wasn't at the time.
> >
> > Also, as far as Karl is concerned, he generally means well, but it most
> > cases the information or suggestions he gives are wrong.
> >
> > I'm sorry I can't help further with this problem right now, but hopefully
> > this will maybe provide some thoughts that point you in the right
> > direction for a solution.
> >
> > --
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>
> Ok, so I suppose no one really knows how to successfully setup Ubuntu as a
> XEN domU guest on CentOS or Fedora Core then?

Never used either of them, but heres what I would try:

does centos have xen-tools? Then... use xen-create-image with the appropriate 
options, or if not... do it by hand... create a new lvm volume (or a disk 
image using dd), then debootstrap ubuntu and set up a config file for xen.
Maxbe you'll have to fix some things that xen-create-image would have done for 
you...

-- 
Just my 2¢
Chris