On Jul 29, 2009, at 7:52 AM, "Andrea Dell'Amico"
<adellam@xxxxxxxxxxxxx> wrote:
> On Tue, 2009-07-28 at 14:31 -0400, William L. Maltby wrote:
>
>>> When the two hosts are in sync, if I activate more than a few (six
>>> or
>>> seven) xen guests, the master server crashes spectacularly and
>>> reboots.
>>>
>>> I've seen a kernel dump over the serial console, but the machine
>>> restarts immediately so I didn't write it down.
>>
>> If you have an available pc, hook it up in place of the serial
>> console
>> and start a terminal emulator, e.g. minicom or whatever you prefer,
>> and
>> turn on full logging. This should save everyting in a file that you
>> can
>> then review.
>
> Uhm. The console is on the DRAC5 card. I think I would need to
> activate
> some network kernel crash dump feature.
>
>> If it's a Windows based, just remember to get rid of the ^M with
>> dos2unix, or equivalent, after you send it to a *IX box.
>>
>> I don't know anything about the rest of your problem, sorry.
>
> As I wrote, it's a production server. I cannot stop it when I want, I
> need to reserve a weekend session.
> In the meantime, I was asking if there's a known problem with a setup
> like mine.
I read on another forum how a user using iSCSI for domUs was
experiencing network hangs due to the fact that dom0 didn't have
enough scheduler credits to handle the network throughput. That might
be related.
http://lists.centos.org/pipermail/centos-virt/2009-June/001021.html
-Ross
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