Fedora xen - Apr 2006 - two fully virtualized systems crashing

Hi,

i have serveral DomU''s running under Xen xen-3.0.1-4
kernel-xen0-2.6.16-1.2080_FC5.
i have paravirtualized and fully virtualized systems (windows and linux).
now the problem is whenever i start 2 fully virtualized systems in parallel
(first start one then if this runs try to start the other one) the computer
completely crashes and reboots, no more log entries... nothing.

does anybody now how to debug such a problem ? 

for couriosity this occurs only on one system, i have a second system with a
very similar setup and here i can start 2 fully virtualized (windows) systems in
parallel without problem.

any ideas ?

regards,
Matthias
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Hi,

On Tue, 2006-04-11 at 16:05 +0200, Matthias Bayer wrote:
> i have serveral DomU''s running under Xen xen-3.0.1-4
kernel-xen0-2.6.16-1.2080_FC5.
> i have paravirtualized and fully virtualized systems (windows and linux).
> now the problem is whenever i start 2 fully virtualized systems in parallel
(first start one then if this runs try to start the other one) the computer
completely crashes and reboots, no more log entries... nothing.
> 
> does anybody now how to debug such a problem ? 
With serial console, usually.  There are also a number of upstream Xen
updates for VMX, and we''re putting together an update which may help
there.

Cheers, 
 Stephen