Re: [Xen-users] Re: [Xen-devel] pci-passthrough in pvops causing offline raid

[Mark Adams <mark@xxxxxxxxxxxxxxxxxx>]

On Mon, Nov 15, 2010 at 12:44:13PM -0500, Konrad Rzeszutek Wilk wrote:
> On Mon, Nov 15, 2010 at 05:23:09PM +0000, Mark Adams wrote:
> > On Mon, Nov 15, 2010 at 12:15:44PM -0500, Konrad Rzeszutek Wilk wrote:
> > > On Sun, Nov 14, 2010 at 05:15:02PM +0000, Mark Adams wrote:
> > > > 
> > > > On 12 Nov 2010, at 22:22, Konrad Rzeszutek Wilk 
> > > > <konrad.wilk@xxxxxxxxxx> wrote:
> > > > 
> > > > > On Fri, Nov 12, 2010 at 05:10:58PM +0000, Mark Adams wrote:
> > > > >> On Thu, Nov 11, 2010 at 02:06:58PM -0500, Konrad Rzeszutek Wilk 
> > > > >> wrote:
> > > > >>>> I've just noticed this at the end of xm dmesg
> > > > >>>> 
> > > > >>>> (XEN) msi.c:715: MSI is already in use on device 02:00.0
> > > > >>>> (XEN) msi.c:715: MSI is already in use on device 02:00.0
> > > > >>>> (XEN) msi.c:715: MSI is already in use on device 02:00.0
> > > 
> > > Looking briefly at the code it means that somebody enabled the MSI
> > > already on the device and did not disable them. But I wonder how
> > > you got those in the first place. Did you use xen-pciback.hide (for PVOPS 
> > > kernels)
> > > or pciback.hide (for older kernels) to "hide" the devices away from the
> > > Linux Dom0 kernel?
> > 
> > using xen-pciback.hide as its a pvops kernel (debian squeeze
> > 2.6.32-5-27)
> 
> Ok. Then it might be worth looking in when this happens. I think
> there is an argument on the Xen hyperisor line to include the time-stamp, but
> I don't remember it :-(
> 
> > > Didn't you say that you had two servers and saw this problem on another
> > > box too?
> > > 
> > > Without more details on the Xen hypervisor line or the kernel line when
> > > the failure occurs I sadly can't help you.
> > 
> > Yes this occurs on both servers that I've tried it on. Doesn't the MSI
> > log above indicate that there is a conflict - which is what ends up
> > causing the device to go offline? Is there no other way to identify the
> 
> Could be, but it is unclear - it depends on when the message pops out.

The message appears immediately on boot.

> 
> But that does not help with finding out why your RAID controller goes offline.

Maybe the other user having a similar issue can help with logs if it is
still happening to him. I'll ask on that thread...

Regards,
Mark


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