Hello again,

No it was not, but now I'm aware of that.

It seems that the Domain-0 and paravirtualized hosts were using too much 
memory, so the hypervisor was not running correctly.

We are testing now the configuration with Dom0 shrunk to 1GB of RAM and 9 
paravirt. hosts. In this configuration hypervisor have ~8GB of RAM free 
and seems to be running OK. (before it had ~512MB).
We didn't notice any problem since Friday. We were doing some stress tests 
(like creating new big VM, even 2-3 simultaneously).

It's strange that system does not automatically manage the amount of 
memory required by hypervisor. 

Best Regards
Krzysztof Mazurek
[email protected]


[email protected] — zapisano w dniu 2009-06-22 13:56:55:

> Justin Cook <[email protected]> 
> Wysłane przez: [email protected]
> 
> 2009-06-22 13:56
> 
> Odpowiedz użytkownikowi
> "Red Hat Enterprise Linux 5 \(Tikanga\) discussion mailing-list" 
> <[email protected]>
> 
> Do
> 
> "Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list" 
> <[email protected]>
> 
> DW
> 
> Temat
> 
> Re: [rhelv5-list] RHEL 5.3 with XEN -> rebooting IBM machine
> 
> On Tue, Jun 16, 2009 at 4:24 PM, Justin Cook<[email protected]> wrote:
> > On Tue, Jun 16, 2009 at 3:15 PM, Krzysztof
> > Mazurek<[email protected]> wrote:
> >> Since we upgraded RHEL to version 5.3 (from 5.2) on IBM x3650 
> (XEON QuadCore
> >> 2GHz  with 20GB RAM). We experience random server reboots.
> >
> > I think this is a known issue with some hardware configurations.
> > Revert to the previous kernel. In the meantime, you should open a
> > support request with Red Hat.
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=494114
> 
> Hi,
> 
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> 
> -- 
> Justin Cook
> 
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