Thank you, it is much more clear.
Unfortunately, the Sun Fire V40Z server, on which I want to install a
win2k3 server, has 1st gen. Opteron CPUs, which do not support
hardware virtualization. If they would, I could install Windows
directly on XEN as a domU.
XEN supports Windows only on HVM capable hardware, but VirtualBox does
not need HVM, so it seemed to be a good solution.
I also tried VMWare, but it does not run on dom0 either.
The dom0 is a Debian Etch and there is a domU with Oracle Enterprise
Linux. Maybe I should replace XEN to another solution, which supports
both Windows and Linux without HVM, and can boot them from LVM.
VirtualBox can only use image files.
Is there such a VM?
If not, I will try qemu.
On Thu, Feb 26, 2009 at 8:21 PM, Mark Williamson
> As a rule, if something isn't possible in dom0 it won't be possible in a
> paravirt domU either. I'm afraid that's the case here - VirtualBox needs more
> low level control over the CPU than Xen will give it.
> You can probably get away with running VirtualBox inside an HVM domU, if you
> have HVM-capable hardware. If that doesn't work reliably it may be hard to
> fix, though.
> Using Qemu without any accelerators (i.e. KVM or kQemu) should also work in
> any domU but it is much slower.
> In the future, perhaps somebody will make it possible to virtualise the HVM
> instruction set, then nesting like this will be easier. For the moment,
> though, that's not possible.
> Hope that clears things up. I think my information is up-to-date...
> On Thursday 26 February 2009 19:09:49 Espák Miklós wrote:
>> although it is primarily a VirtualBox problem, but maybe someone knows
>> the answer here.
>> I read that it is not possible to run vbox on dom0.
>> Is it possible to run it on domU?
>> Xen-users mailing list
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