Re: [Xen-users] Best way to differentiate between virtual servers and non-virtual servers

[jinho hwang <hwang.jinho@xxxxxxxxx>]

Hi Simon, 

Thanks for you reply. I understand your saying about 2). I think under current situations (with many different hypervisors and their settings) it might be hard to detect whether the machine is virtual or not with only one method. That's why I listed many possible ways to detect it. If you can share your idea how to detect the virtual machine, it might help many people who try to know the current states of the machine. 

I always wanted to know whether my machine is virtualized or not. Also, my current project wanted me to find a way to do it. 

Please, share your idea if you have any. 

Thanks,

Jinho

On Tue, May 15, 2012 at 11:36 AM, Simon Hobson <linux@xxxxxxxxxxxxxxxx> wrote:

jinho hwang wrote:

2) by watching network connectivity (address), if I can traceroute the client computer, I may be able to figure out whether it is virtualized or not because the traffic usually goes through the hypervisor (not only xen, but all other hypervisors.. I need to confirm this).

Incorrect.
If setup in bridged mode, then the host/hypervisor and it's network layer is as invisible to the outside as an ordinary L2 network switch would be. Only if the host/hypervisor was setup in routed mode would you see it as a hop in traceroute - but that would not be distinguishable from any other router.


It might help if instead of describing ways you can think of doing it, you described what you actually want to achieve. And why !

--
Simon Hobson

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-- 
Jinho Hwang
PhD Student
Department of Computer Science
The George Washington University
Washington, DC 20052
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