Re: disk offline with xen4.0+pvops2.6.31.13

[Jeremy Fitzhardinge <jeremy@goop.org>]

On 04/27/2010 01:10 AM, tsk wrote:
> Hi, I'm a friend of yingbin wang, 
>
> we take some pictures for the disk offline, in the attachment.
>
> We did many stress test, the result is:
> disk offline disappears when there is no xen hypervision in 2.6.31.13, 
> when we use RHEL 5.x kernel+Xen, disk offline disappears too. It seems
> that redhat should add some patch to solve this problem..
>
> disk offline appears on:
> linux-2.6.18.8 + Xen-3.4.2
> linux-2.6.31.13 + Xen-4.0.0
> linux-2.6.32.10 + Xen-3.4.2
> Fedora linux-2.6.32 + Xen-4.0.0
> Suse linux-2.6.32.11 + Xen-3.4.2
>
> The servers tested above are all with Nehalem architecture CPU.

So you're saying that any recent Xen with any kernel is failing on
fairly recent hardware.  Have you tried playing with the iommu boot
command line options?

Can you post a complete log of Xen's console output (both hypervisor and
kernel console)?

What is the hardware platform?  Am I right in guessing that you're
seeing this on two distinct machines?

Thanks,
    J