Re: [Xen-users] Problem setting up VNC on SLES10 HVM DomU

[Evan Lavelle <sa212+xen@xxxxxxxxxxx>]

Jonathan Ervine wrote:
> On Sunday 27 January 2008 18:11:57 Evan Lavelle wrote:
> > I've just uneventfully installed SLES10 as an HVM DomU (after finding
> > out, the hard way, that OpenSUSE 10.3 won't install on Intel VT).
> Echoing some of Jim's comments too. openSUSE 10.3 absolutely installs on 
> Intel-VT and AMD-V hardware. It's not mentioned anywhere, but what is 
> the Dom0? (I would guess SLES 10?)
The main issue is getting out of the graphical installer; apparently the 
text installer works. You can, in principle, do this with the shift key, 
but it's next to impossible in practice. See Ian Jackson's post on 
xen-devel 
(http://lists.xensource.com/archives/html/xen-devel/2007-12/msg00564.html) 
for various other problems. Ian doesn't say *why* it's necessary to turn 
off gfxboot; see the other post 
(http://www.mail-archive.com/fedora-xen@xxxxxxxxxx/msg00699.html) for 
details. My own fix was much simpler - install SLES 10 instead  :)
Dom0 is Fedora 8, Xen 3.1, so I haven't addressed your other points 
concerning SLES 10 Dom0's. The issue of looking at DomU's on a dom0 via 
qemu is interesting, but it doesn't fit in with the way I do things. The 
Dom0 is practically irrelevant - it's headless, and only exists to 
create and shutdown DomU's. I imagine that this is a common way to use 
Xen. Each DomU runs a vnc server, with a remote client somewhere else on 
the network.
> 2. Why are you using HVM for this instance rather than 
> paravirtualisation?
It's easier (ha). This box has 7 DomU's, Linux&Windows, all HVM, and all 
worked out of the box, except OpenSUSE and SLES 10. I can live with the 
lower performance, and I've had a lot of trouble with PV domU's on F8.
> I know KDE has a 
> desktop sharing option that allows you to temporarily share your 
> desktop with another user via VNC. It would be interesting to see if 
> this works. Do any of the usual logs (/var/log/messages etc.) provide 
> any insights into what is going on?
I only installed Gnome. Nothing in the log files, unfortunately. The 
relevant stuff looks like it should go to .xsession-errors, but that 
always contains lots of incomprehensible stuff anyway.
> Just to satisfy my own curiousity - why is X forwarding via ssh not a 
> viable solution for you?
To some extent, perhaps bloody-mindedness. It works on everything else. 
I took a break from this yesterday and installed a complete WinXP DomU, 
with a remote vnc login, in ~90 minutes, without a hitch. Besides, I 
normally use Windoze as a front-end, so that brings up all sorts of 
problems to do with Cygwin/ssh/X installation.
BTW - something I forgot to mention in my last post - I can log in from 
anything, without being root, if I use a failsafe Gnome session. I've 
just had a quick look on Google for this, and found at least one hit for 
someone who had the same problem after installing SP1 for SLES10, so 
I'll chase that up.
- Evan

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