On Di, Mär 25, 2008 at 11:01:00 -0700, Rick Strong
wrote:> Hi,
>
> First off, I am a hardware go so if these questions are obvious, sorry
> in advanced.
>
> I wanted to boot xen in a guest domain on top of xen. I believe this
> should be possible if the underlying xen is full system enabled and the
> guest domain xen is paravirtualized, but I am fairly new to this. Has
> anyone tried this before?
This problem was discussed here before.
You can search the list archives for more information.
You can have two levels of virtualization if you have VT-x system:
1 2 3
-----------------------
dom0 domU-HVM
--------||-------------
dom0 domU-PV
-----------------------
Without HVM usage it is impossible
to run nested Xen domains.
If you want to get more levels of virtualization
you can use QEMU (withou kqemu!).
Also take a look at OpenVZ in Xen (may be it is not exactly
what you want, but may be it helps).
>
> Also, I was wondering what the best way of proceeding towards this goal
> is in the guest domain. When I start xen on hardware, I use grub to load
> the xen hypervisor as the kernel and pass domain 0 and its initrd as
> modules. However, in a guest domain, I wont necessarily have grub. Is
> there an easy way to pass the modules to a kernel in a xen guest domain
> startup script? I only ask because you definitely are able to pass
> kernel, so being able to pass a module may be possible.
When you run HVM-domain (level 2 in my picture shown above),
you use GRUB inside it.
HVM is not PV and you must use boot loader,
as in case when you make normal machine boot.
>
> Thanks in advance,
> -Rick
>
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--
WBR, i.m.chubin
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