Re: [Xen-devel] system lockup

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

> > Could you hook up a serial console to the machine? If you start
> > Xen with the appropriate (e.g. 'com1=115200,8n1') option there's
> > a fair chance that either Xen or more likely, domain 0, will
> > write some sort of crash message to the console when the machine
> > locks. A 'debug=y' build of Xen might help.
> 
> I'll hopefully be able to try something eventually.  I just moved, so at
> this point I'm living out of cardboard boxes 8)
> 
> Out of curiosity, is there any way to get the Xen console/crash dumps on
> the console (as opposed to serial)?

DOM0 will of course write crash dumps to dmesg and /var/log/messages,
if it can. Adn Xen's trace buffer can be seen with xen_dmesg.py.

But if you're locking hard then you want those crash dumps to get
written somewhere synchronously, and there's no better option than a
serial line. :-)

 -- Keir


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