Re: [Xen-users] Ubuntu 8.04 DomU crash

[Markus SchÃnhaber <xen-users@xxxxxxxxxxxxxxxxxxxxx>]

Chris 'Xenon' Hanson:

>   My Debian 5 Lenny Dom0 has been running great for a few weeks with two PV 
> DomU's running
> Ubuntu 8.04 on an 8-core Intel E405 12Gb machine. Xen 3.2 from Debian's 
> packages. Both
> DomU's are webservers, and one runs qmail as well. The DomU that crashes is 
> not under
> heavy load.
> 
>   However, twice since moving to this new system, one of my DomU's has 
> crashed bad and
> needed to be taken down and restarted. This last time, I captured some of the 
> info in the
> console. There's lots more if anyone wants to see it.
> 
>   Does this look familiar to anyone?

Yes, I have seen those "BUG: soft lockup - CPU#0 stuck for 11s!" hangs a
couple of times, too.

> I'm wondering if the FS (ext3) is implicated, or just
> an innocent bystander. I'm using LVM storage on a RAID1 done with Linux 
> kernel software RAID.

Same on the machine I had problems with. So, this might indeed be a
problematic combination - or simply pure chance.

>   Thanks in advance for any advice.

I have neither found the root of the problem nor a solution. But
replacing the domU's Ubuntu kernel by a self-compiled recent vanilla
kernel (2.6.28.8) with domU support is a workaround that lets the domU
run stable since 54 days now - previously one week was the most I could
get for uptime.

-- 
Regards
  mks


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