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

["Sebastian Reitenbach" <sebastia@xxxxxxxxxxxxxxxxxxxx>]

Hi,

Stephan Seitz <s.seitz@xxxxxxxxxxxx> wrote: 
> I had similar problems on one machine which has been solved by adding
> pci=routeirq to the kernel parameters at boot time.
> 
> I somewhat sure that your problem is caused by other issues, but ...
> maybe it helps ;)
thanks for this tip, I tried, but unfortunately it made the things worse. 
I started the copyjob over NFS again, it only took 10 minutes, and the 
server was frozen again.
Now I'll try to NFS export sth. from dom0, not from a domU as before, and 
start the copy job again, just to see what happens. 

kind regards,
Sebastian
> 
> Regards,
> 
> Stephan
> 
> 
> 
> 
> Sebastian Reitenbach schrieb:
> > 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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