Re: [Xen-users] Am I running under Xen?

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

Fajar A. Nugraha wrote:
> Matthew Haas wrote:
> > Tom Horsley wrote:
> > > Is there a standard idiom most folks use to ask the
> > > question: Am I a linux that was just booted under Xen?
> >
> >  If there is a nice guaranteed way of detecting a Paravirtualized 
> > domU (or if the machine is acting as a dom0), I would also be 
> > interested in knowing (basing it off strings in the kernel name isn't 
> > necessarily 100% guaranteed).
> What RH did :
> "if [ -e /proc/xen/xsd_kva -o ! -d /proc/xen ]; then"
>
> First part detects a xen dom0, second part detects a native Linux.
> To detect domU, you could put the code in the "else" part, or invert 
> the test, e.g.
> "if [ -d /proc/xen -a ! -e /proc/xen/xsd_kva ]; then"
>
> Regards,
>
> Fajar
Also, if you have a well-defined practice of using the Xen-provided 
prefix in your MAC addresses, you can identify them that way, at least 
on localhost.
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