Device hints to put mlx4 on IB mode

[Vinícius Ferrão]

Hello Justin,

I’m actually building a server-only appliance based on Infiniband on IB Mode for storage network. So the compute nodes isn’t part of the problem.

So the problem here is cosmetical, as I said. Dumping error messages every boot is just ugly.

V.

> On 10 Nov 2016, at 14:20, Justin Clift <justin at postgresql.org> wrote:
> 
> On 2016-11-10 15:39, Vinícius Ferrão wrote:
>> Hello Meny,
>> Thanks for the input. You’re recommending a driver code change to
>> start always on IB mode. This appears to be OK, but it's little
>> dangerous. I will need to keep the patches for the drivers/modules if
>> anything changes, right?
>> Another question, changing the starting mode cannot be done in other
>> place? Like the Connect-X3 firmware? If not, since you’re on Mellanox
>> can we recommend a better approach from the upstream (mlx) or this
>> would be inviable?
>> Thanks for your attention and time, it was really helpful.
> 
> As a thought, are you using a config mgmt system? (eg Ansible, Salt, Puppet, etc)
> 
> If so, that would be able to set this correctly (via sysctl) for all the nodes. :)
> 
> + Justin