Re: [Xen-users] How do I find out why Dom0 crashes on guest startup?

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

Schober Walter wrote:
> Before Wednesday all run fine. Then I must have done something - I 
> tried to get rid of those IPMI error messages on starting hpasm, 
> installed the latest RPMs from HP website - but can't tell exactly 
> when it started that the DomU startup crashed my Dom0.
> Anyway … How can I find out now, what exactly causes my Dom0 to crash? 
> Which logs would tell me that?
> /var/log/messages: Sometimes xenbr changes into forwarding of tap0 
> before, sometimes not.
> /var/log/xen/xend.log: The only thing that sounds strange:
> [2007-05-18 11:56:58 xend 3475] DEBUG (XendDomain:153) number of vcpus 
> to use is 0
> Meanwhile: hp-OpenIMPI, hpasm, hprsm, cmanic removed, OpenIPMI removed.
>
> Still, the Dom0 crashed (just reboots, no output on Display, SSH 
> connection interrupted) on starting a DomU.
> System: Centos 5 x86_64 @ HP DL360G5, latest yum update done.
>
> Will attach more info on config, when needed.
>
> Many thanks!
> Walter
RHEL 5, and thus CentOS 5, both have auto-updates turned on by default 
with yum-updatesd. I consider this *insane*, since it will patch things 
without a chance to say "hmm, I'm busy today, let's not do that Xen 
kernel patch right now!".
Can you bring up the machine without Xen and check /var/log/rpmpkgs, 
created by /etc/cron.daily/rpm, to check the software you've installed?
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