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Re: [Xen-users] Prohibit to run Xen inside guest VM?

To: "Fajar A. Nugraha" <fajar@xxxxxxxxx>
Subject: Re: [Xen-users] Prohibit to run Xen inside guest VM?
From: Jun Koi <junkoi2004@xxxxxxxxx>
Date: Tue, 15 Dec 2009 12:30:07 +0900
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On Tue, Dec 15, 2009 at 11:24 AM, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:
> On Tue, Dec 15, 2009 at 9:09 AM, Jun Koi <junkoi2004@xxxxxxxxx> wrote:
>> Hi,
>> I am looking around to find an ISP that provides Xen VM, so I can run
>> whatever OS I want inside the rented guest VM.
> usually you don't get to run "whatever OS". Amazon EC2 is a good
> example. Look at what OS they support.

The point is: once I control my VM, I can replace the OS anytime, no?
How can they enforce that?
(Suppose that they give me the HVM)

> Technically the only way you could run nested Xen is by using a HVM
> domU. Even then you'd get close to dead snail performance, and you can
> only have PV guests.

Why we can only have PV guests, but not HVM?
I know that currently nested hypervisor is not good in performance,
but that might very well change in the future.

> You might be better of with managed dedicated servers. Seriously. It's
> available under $100/mo (search "dedicated server" on google).
> However, if you plan to use it for Xen, I highly recommend you get
> ones with remote console, which might be somewhat more expensive.

Thanks for this advice.


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