Possibly so, yes; however, Xen (at least the open source version) does not
strictly enforce this the way VMware does. In Xen I have had occasions where I
used MAC addresses outside of the Xen vendor range for various reasons, so this
isn't a 100% reliable method.
-Nick
>>> On 2009/12/21 at 14:09, Sachin Goel <SACHIN.GOEL@xxxxxxxxxx> wrote:
> Thanks Nick for the inputs!!
>
> Xen recommends the MAC addresses to start with 00:16:3e..cann't that be used
> to determine if a machine is virtual or not by checking the MAC
> addresses..but the point that would be handy to know will be what is the
> level of recommendation..is it strictly forced by Xen (like VMWare does) or
> its just a recommendation ??
>
> - Thanks,
> Sachin.
>
>
> ----- Original Message -----
> From: Nick.Couchman@xxxxxxxxx
> To: xen-users@xxxxxxxxxxxxxxxxxxx, SACHIN.GOEL@xxxxxxxxxx
> Sent: Tuesday, December 22, 2009 2:31:55 AM GMT +05:30 Chennai, Kolkata,
> Mumbai, New Delhi
> Subject: Re: [Xen-users] How to detect if a machine is a Virtual machine ??
>
> There are a few ways that you can determine that you're in a virtual
> platform. First, if the platform is PV platform, you either use uname to
> find the kernel name (usually contains a reference to Xen) or look for the
> /proc/xen directory. You can also look in /sys/hypervisor/type, which exists
> on Xen platforms. On PV domUs, /proc/xen/capabilities should be empty - on
> dom0 it will have the various available types of domUs listed. Of course,
> this is mainly for Linux-based PV domUs - other platforms will have
> indications elsewhere.
>
> For HVM domUs it's much harder to tell - probably the best way is to look at
> the hardware specs and see if they match what Xen (Qemu) emulates as
> hardware. Since many HVM kernels are not "aware" of the fact that they are
> running as virtual machines, there isn't necessarily anything you can look
> for to make that determination. Some HVM domUs run PV drivers (e.g. the
> Windows GPL PV drivers) that could tip you off, but it just depends on the
> configuration of the domU kernel and drivers.
>
> -Nick
>
>>>> On 2009/12/21 at 11:22, Sachin Goel <SACHIN.GOEL@xxxxxxxxxx> wrote:
>> Does anybody has an idea about this ??
>>
>> - Thanks,
>> Sachin.
>>
>> ----- Original Message -----
>> From: sachin.goel@xxxxxxxxxx
>> To: xen-users@xxxxxxxxxxxxxxxxxxx
>> Sent: Monday, December 21, 2009 10:51:45 PM GMT +05:30 Chennai, Kolkata,
>> Mumbai, New Delhi
>> Subject: [Xen-users] How to detect if a machine is a Virtual machine ??
>>
>> Hi,
>>
>> Just curious to know, if there is any way that given a terminal to a
>> box, we can determine is it a physical machine or a virtual machine ?
>>
>> Thanks,
>> Sachin.
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-users
>
>
>
>
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