On Wed, May 17, 2017 at 1:45 PM, Sarah Newman <srn@prgmr.com> wrote:

On 05/17/2017 01:30 PM, Jerry wrote:

> For some reason each of the 5, 6 & 7 releases have issues with the mpt2sas
> driver (there isn't enough swiotlb allocated by default for the driver to
> work properly, and the units for that parameter changed between 5 and 6).
> It's like this driver has bad luck or something.

To my best knowledge they shouldn't use swiotlb if you give the dom0 4GiB+
of RAM. I posted the exact same problem before and that was the recommendation
I got. It works.

--Sarah

I'm not keen on letting dom0 take up so much memory :)

I'm giving swiotlb 256MB of memory (swiotlb=131072 on el6/7) and that resolved it for my configuration.

Jerry