Re: [dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0

[Andreas Hartmann <andihartmann-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org>]

On 10/07/2015 at 06:10 PM, Joerg Roedel wrote:
> On Wed, Oct 07, 2015 at 04:57:31AM +0200, Andreas Hartmann wrote:
>> Got it during a single mount (I booted with massively reduced mounts and
>> did the mount afterwards manually. During the second manually mount, the
>> problem can be seen).
>>
>> I attached the requested files. The mount starts at 80 seconds.
>> Hope this helps.
> 
> Okay, the lowest dma-addr the AMD IOMMU driver returns is 0x1000 and
> the highest is 0x7ff4000. All fault addresses are outside of this range,
> so the AMD IOMMU driver never returned these addresses.
> 
> This doesn't mean that it is not at fault, but it looks still unlikely.
> Maybe I can reproduce the problem here. Can you please tell me some
> details about the partitions you mounted to trigger this?
> 
> I remember something about a xfs->lvm->dm_crypt->md_raid->sata setup, but
> having more details may help me to reproduce.

See attachments in http://article.gmane.org/gmane.linux.kernel.pci/43975


To reproduce the error:
First I mounted /daten2, afterwards /raid/mt, which produces the errors.
The ssd mounts have been already active (during boot by fstab).

If I mount all of them already during boot, the system mostly starts to
emergency mode which unfortunately is broken here.


Regards,
Andreas