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xen-users
Re: [Xen-users] Xen on AMD64 with Desktop on domU
In one of the documents, I read, it indicated that, for example, if I
had 2 PCI network cards, and I wanted to have domU manage one of the
cards directly, there's a way of telling Dom0 to not manage the card in
question. Is it possible to do something similar with the AGP adapter
bus/card? But, given I actually get this to work, how do I go about
getting desktop domU to gain control of tty7 (or whatever, since all
consoles are (I believe) controlled by dom0. In other words, I'd like to
have a direct pass-through.
Could I achieve something similar by installing Xorg in dom0 and domU
and running XDMCP to connect to domU? This would mean a more complicated
package management scenario. I guess it all depends on how well the
nvidia drivers play with Xen.
Any thoughts?
SM
Petersson, Mats wrote:
-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
Samir Mishra
Sent: 20 April 2006 12:00
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen on AMD64 with Desktop on domU
Hello.
I'm doing a fresh install of Xen on an AMD64 using Gentoo. I
have an nvidia graphics card. Dom0 will be a minimal system
install without Xorg or any other GUI applications. I'm
hoping to set up Xen with 3 guest domains -- one running
servers for the network (ntp, dhcp, bind, yp, etc.), one
guest domain running my desktop with Xorg and the third guest
domain to be used for development & testing.
What I'm hoping to find out is --
1. does the above make sense?
In theory yes. In practice, it doesn't work. See below.
2. I want to access the X-server on the desktop domU directly
on tty7.
Is this possible? If so, how can I do this?
No. The X-server needs to be the OWNER of all the graphics card, and
your Dom0 takes ownership of the graphics card very early on.
There is two solutions that come to mind:
You could perhaps use a simple PCI graphics card for the Dom0 console,
and then give the DomU the nvidia card, but any shared hardware must be
managed by one Domain only (and everyone else talking through that
domain to get access). Of coruse, this assumes that there is an nVidia
driver that works under Xen, which I don't think exists (yet) - and I
very much doubt that native kernel graphics drivers will work "out of
the box" - as they probably do all sorts of "nasty" things that Xen
needs to be aware of.
Or you can use vncserver/vncviewer to access your desktop machine.
3. what are the things I need to watch out for?
See above.
[Snip other questions that I can't really answer anyways]
--
Mats
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