[lustre-discuss] DMA Interrupt Remap Errors

[Ashish Purkar]

Are you using RSS with MSIX on NIC?
Please provide more details about the NIC and the configuration.

app√
On Sep 30, 2015 1:54 AM, "Exec Unerd" <execunerd at gmail.com> wrote:

> Hello,
>
> I've been getting these types of error messages on my OSS nodes, and I'm
> wondering if I have a client sending bad data through RDMA. My googling has
> been fruitless to discover the meaning of "fault reason 34" but the PCI
> addresses are my 10Gb and 1Gb NICs.
>
> I'm not really sure where to begin diagnosing this error, so I'm hoping
> one of you have seen this before. One thing to note is that no clients
> should be using the 1Gb NIC to mount the file system; it's just for
> management so I don't know why I'd see a DMA error on PCI 04:00.1.
>
> dmar: INTR-REMAP: Request device [[81:00.1] fault index 8c
> INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
> dmar: DRHD: handling fault status reg 102
> dmar: INTR-REMAP: Request device [[04:00.1] fault index 75
> INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
>
> dmar: DRHD: handling fault status reg 202
> dmar: INTR-REMAP: Request device [[04:00.1] fault index 74
> INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
> dmar: DRHD: handling fault status reg 302
> dmar: INTR-REMAP: Request device [[04:00.1] fault index 73
> INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
>
> kernel: 2.6.32-504.23.4.el6.x86_64
> lustre: lustre-2.7.58-2.6.32_504.23.4.el6.x86_64_g051c25b.x86_64
> zfs: zfs-0.6.4-76_g87abfcb.el6.x86_64
>
>
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