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xen-users
Re: [Xen-users] Am I running under Xen?
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?
I'm thinking about fooling with some of my alternate
boot partitions so they can be booted as paravirt
VMs, but they'd need to do a bit of reconfiguring
of themselves when running under Xen early in the boot
process (like not trying to mount other partitions
that are gonna be used by other virtual machines
and use a different host name, and don't start so many
system services, etc).
I suppose I could just check and see if the kernel
name has "xen" in it, but I just wondered if there
was one true way to ask this question.
This is actually a question I've also found myself asking... I've got
a couple custom-built Debian packages that unroll various configurations
onto VMs, dom0s, and regular machines... I find myself writing in all
sorts of weird checks to try and determine what it is (and always am
finding new loopholes that I need to close).
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).
-Matthew
--
Matthew Haas
Visiting Instructor
Corning Community College
Computer & Information Science
http://lab46.corning-cc.edu/haas/home/
"Writing should be like breathing;
It is one of those important things we do." -- me
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