[Xen-users] Re: Lenny DomU crash!

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Ferenc Wagner wrote:

>  > I'm getting the same thing - DomU runs fine for weeks or months, but
> >  then our monitoring system tells us it's down. From the outside, it's
> >  'dead' - doesn't respond to pings or anything. From Dom0 we can
> >  connect to the console (xm console <guestname>) and get the last few
> >  pages of output - but there's nothing unusual logged (just a load of
> >  Shorewall log lines which is normal). The guest is absolutely dead to
> >  the console as well.
> >
> >  xentop reports that teh guest is taking 100% cpu.
> >
> >  All I can do is kill it and restart it.
> >
> >  Almost all my guests are Debian Lenny, installed with debbootstrap and
> >  then cloned. Some have never done it (yet !), others have done it two
> >  or three times over the last few months.
> >
> >
> >  Dom0 runs 2.6.18-6-xen-686
> >  Guests run 2.6.18-5-xen-vserver-686 or 2.6.18-6-xen-686 - both have
> >  guests that have never crashed, both have guests that have.
> See http://thread.gmane.org/gmane.comp.emulators.xen.devel/55056/ for
> a workaround.  I also encountered this problem
> (http://lists.xensource.com/archives/html/xen-devel/2009-07/msg00659.html)
> however, my guest are running the stock Lenny kernel (2.6.26).
Hmm, I don't think it's that - my symptoms are different.

From the first link, I see that this event is characterised by an 
inability to start PV guests and existing guests showing state 
blocked. In my case, I can start a PV guest, and the stuck guest 
shows state running and consumes 100% cpu.
Also, if it were that, wouldn't I expect to see other guests on the 
same host lock up ?
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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