[Xen-users] shut down domU with hidden pci device = hosed dom0

[Steve Wray <steve.wray@xxxxxxxxx>]

I've been doing some testing of the pci device hiding; its a lot easier
in Debian than it is in Suse as Debian doesn't mess around with having
it as a module...

Anyhow, I'm finding a bizarre issue:

I have a domU which uses a 'hidden' PCI network card, this works just
fine. In other words I do have the 'pci =' directive and the
'pciback.hide=' directives correct as I can access the pci network card
from the domU and there are no problems with the dom0 prior to shutting
the domU down.

However, when I shut that domU down the dom0 starts having issues with
the IRQs for its IDE controllers, has DMA errors on all of its drives
and crashes. It doesn't kernel panic, it just goes into an endless cycle
of DMA-errors on its hard drives and becomes unusable.

Seems odd that shutting down a domU (with a 'pci =' directive) should so
hose the dom0... are these actually likely to be connected or is there
something else going on here?

Thanks!


Steve Wray wrote:
> Jerry Amundson wrote:
>> On 3/18/07, Steve Wray <steve.wray@xxxxxxxxx> wrote:
>>> Can someone please provide some documentation, update the wiki or direct
>>> me to a URL which can help?
>> http://wiki.xensource.com/xenwiki/Assign_hardware_to_DomU_with_PCIBack_as_module
>>
>> has helped me...
> 
> Thanks, thats one of the ones I found too... but it didn't help me much.
> 
> Its better than nothing but what I'd really like to see is something
> along the lines of:
> 
> "So you have a xen2 box which hides PCI devices using physdev_dom0_hide
> etc? Heres how to upgrade this existing, known-good configuration to xen3".
> 
> 
> 
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