[Xen-users] Debugging a crash

[Liam Kirsher <liamk@xxxxxxxxxxx>]

I've had Xen crash a couple of times in the last 6 months, and I'm not 
sure quite how to fix it.  Any help would be very much appreciated!
First of all, on a Dell PE 2950, on Dom0 I'm running CentOS 5.0 with Xen 
3.0.3
Linux dom0.mydomain.com 2.6.18-8.1.8.el5xen #1 SMP Tue Jul 10 07:06:45 
EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
I'm running Xen 3.0.3 -- here are relevant entries from yum.log
Jun 27 01:14:18 Updated: xen-libs.x86_64 3.0.3-25.0.3.el5
Jun 27 01:14:18 Updated: xen-libs.i386 3.0.3-25.0.3.el5
Jun 27 01:14:45 Updated: xen.x86_64 3.0.3-25.0.3.el5
Jun 27 01:15:11 Installed: kernel-xen.x86_64 2.6.18-8.1.6.el5
Jul 18 12:54:56 Installed: kernel-xen.x86_64 2.6.18-8.1.8.el5

The domUs have all been updated to CentOS 5.1.

Basically, the whole system just reboots, and there is nothing in any of 
the log files (I've looked in /var/log/messages on host and domUs, and 
on /var/log/xen/xend.log).  The only difference I found was that on one 
of the domUs the 'last'  command shows a crash, while the other systems 
don't, they just show the reboot...
reboot   system boot  2.6.18-53.1.21.e Wed Sep 17 20:51          (12:48)   
johndoe pts/5        71.158.165.277   Wed Sep 17 19:42 - crash  (01:09)
It is not unlikely that that user was doing something that might have 
used a lot of memory/cpu/io, and that that might have triggered the crash.
So, I'm at a loss as to how to proceed.  Please, give me some hints 
about where to look to figure out what happened!
Best,
Liam



--
Liam Kirsher
PGP: http://liam.numenet.com/pgp/


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