Re: [Xen-users] xen dom0 server freezes every one or two hours

["Sebastian Reitenbach" <sebastia@xxxxxxxxxxxxxxxxxxxx>]

Hi,
Igor Chubin <igor@xxxxxxx> wrote: 
> 
> > same problem here and it can be reproduced. I use Gentoo 2007.0 with Xen 
> > 3.1.2 and kernel 2.6.22 (xen-sources) in 64bit mode.
> > The Server is a Dual Opteron 275 running in PV mode.
> > The Dom0 freezes every time if you generate system high-load, for 
example 
> > starting a boinc-client or doing big filesystem transfers.
> > -> Network hangs, SATA Devices time out
> 
> The problem I have mentioned earlier 
> as far as I remember is on a Gentoo system too.
> But there are no problems with the disk. 
> Only network.

I think this is the problem here too. Over Christmas I downloaded the 
opensuse KOTD, hoping that it maybe fixes the problem. the dom0 was 
disconnected from network, and I had two domU's running, and I copied a 650 
MB file between these two via scp, for thousand times.

Two days ago, I connected the dom0 to the network again, and started using 
the domU's as file/print/... servers again.
It took about an hour, and the server was frozen again, without any notice 
in /var/log/messages.

I created a bugreport, maybe you can add your observations there too.

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1131

> 
> May be if they try to generate big load on the system,
> disk drives will hang too. 
> 
> >
> > Normally the system freezes every 2 hours.
> 
> At that case much more seldom.
> Guys have said me that it hangs every several days
> (but if it wants to it can hang several times a day).
> 
> > I tried to play with the Xen version compatibility in the kernel, but 
that 
> > doesn't make a difference.
> >
> > Due to the HDD timeout I can't find anything in the logs...
> >
> 
> Just a guess:
> 
> it may not be related to Xen baloon driver?
> 
> Do you use dom0_mem as a parameter for the hypervisor?
I use dom0_mem, yes, but with and without this parameter, in both cases the 
dom0 froze.

kind regards
Sebastian


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