|
|
|
|
|
|
|
|
|
|
xen-users
Re: [Xen-users] Running Xen on top of Xen
> > I was wondering if anyone has run Xen on top of Xen in the following
> > scenarios and did it work:
> >
> > 1) Xen-Paravirtualized on top of Xen Intel-VT (I hope this would work
> > out of the box)
> > 2) Xen Intel-VT on top of Xen-Paravirtualized (I don't think this would
> > work out of the box)
>
> You can't load the xen hypervisor inside a PV guest, which would be
> necessary to get 2) to work.
As Jim says, you can't run Xen inside of a PV domain. Xen can't emulate the
presense of VT if it's not already there, so your option 2 won't work, sorry.
> Even if you could run the hypervisor inside an
> hvm guest to get 1) to work, I would suspect the performance would be
> abysmal. I tried loading WIndows Virtual PC 2007 inside my Xen WIndows XP
> guest. The configuration steps worked fine, but as soon as I tried to run
> the Virtual PC guest, my Xen Windows guest became unresponsive. (Maybe
> Xen/qemu-dm was trying to emulate every instruction of the Virtual PC
> guest? :-) Some people on this list report being able to run Xen under
> Vmware.
Actually, I find that running Xen PV in an HVM domain on top of a host Xen
performs OK. Not great but actually pretty good. The fact that it's doing
paravirtualisation rather than two nested layers of full virtualisation
probably makes a lot of difference here!
I actually use Xen-on-Xen to do development, with my unstable development Xens
running in HVM domains on top of a nice reliable host Xen :-)
Cheers,
Mark
--
Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/)
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
|
<Prev in Thread] |
Current Thread |
[Next in Thread> |
- Re: [Xen-users] Running Xen on top of Xen,
Mark Williamson <=
|
|
|
|
|