Re: [Xen-users] dom0 crash, require assistance interpretting logs and config suggestions

[Sergey Vlasov <vsu@xxxxxxxxxxx>]

On Tue, Apr 13, 2010 at 09:41:57AM -0700, Ben Holt wrote:
> Pasi Kärkkäinen said the following:
> > On Mon, Apr 12, 2010 at 02:47:19PM -0700, Ben Holt wrote:
> >   
> >>    Pasi Kärkkäinen wrote:
> >>
> >>  On Sun, Apr 11, 2010 at 01:12:09PM -0700, Ben Holt wrote:
> >>
> >>  From /var/log/syslog:
> >>
> >>  Apr 11 04:22:29 xenserver kernel: [277113.497127] irq 22: nobody cared
> >>  (try booting with the "irqpoll" option)
> >>  Apr 11 04:22:29 xenserver kernel: [277113.497144] Pid: 0, comm: swapper
> >>  Not tainted 2.6.26-2-xen-amd64 #1
> >>
> >>  So I assume this is the host/dom0 kernel.
> >>
> >>    Yes.
> >>
> >>  What device is using IRQ 22?
> >>  Try checking from /proc/interrupts or from lspci.
> >>
> >>  Is it a shared IRQ (multiple devices using the same IRQ)?
> >>
> >>    IRQ 22 is being shared between the SATA controller and a NIC.
> >>
> >>    Both /proc/interrupts and lspci are posted below, I should have 
> >> mentioned
> >>    as much in my first message.
> >>
> >>    Thanks for your response.
> >
> > Is this onboard NIC? Or additional PCI card? Can you move it to a different 
> > PCI slot? 
> >   
> It's a PCI NIC.  Unfortunately the other available slots (there are only 
> three on this MB) are being used by the MPEG encoders.  I have a free 
> PCI express slot I could use for a PCIe NIC if necessary.  Whether 
> moving to a PCIe NIC would actually free up an IRQ is hard to say, 
> though for the price of a NIC it is probably worth trying.

And you did not explicitly mention that the NIC is passed to a domU -
maybe this is causing the problem.  Switching NIC roles so that all
devices using IRQ 22 will belong to dom0 may work better.

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