Re: multipath IB/srp fail-over testing lands up in dump stack in swiotlb_alloc_coherent()

Bart Van Assche
2016-06-14T12:25:15Z

On 06/14/2016 02:08 PM, Leon Romanovsky wrote:
> On Tue, Jun 14, 2016 at 11:24:28AM +0200, Bart Van Assche wrote:
>> On 06/14/2016 03:56 AM, Laurence Oberman wrote:
>>> Tracing [ ... ]
>>
>> Can you try to set the kernel command line parameter swiotlb to a value that
>> is a multiple of its default (64MB), reboot and see whether that helps? See
>> also Documentation/kernel-parameters.txt in the kernel tree.
>
> Do you think that 64MB is not enough for this scenario?

Hello Leon,

Does this mean that you think that the "swiotlb buffer is full" messages
reported by Laurence could be caused by something else than hitting the
swiotlb limit?

Bart.