[nvme-fabrics]Fabrics over ROCEv2

[Marta Rybczynska]

----- Le 24 Juin 16, à 16:38, Majd Dibbiny majd at mellanox.com a écrit :

>> On Jun 24, 2016, at 5:32 PM, Marta Rybczynska <mrybczyn at kalray.eu> wrote:
>> 
>> 
>> 
>> ----- Le 24 Juin 16, à 15:40, Majd Dibbiny majd at mellanox.com a écrit :
>> 
>>>> On Jun 24, 2016, at 2:02 PM, Marta Rybczynska <mrybczyn at kalray.eu> wrote:
>>>> 
>>>> Hello Christoph,
>>>> Thanks for the answer. I do indeed have more general problems with
>>>> ROCEv2: ib_send_bw works fine for ROCEv1 but not with ROCEv2. I'm
>>>> going to follow with the Mellanox persons as it seems to be mlx4 or
>>>> configuration-related.
>>> Hi Marta,
>>> 
>>> Do you run with RDMA-CM?
>>> Can you please provide the command lines you use and the GIDs table?
>> 
>> Hello Majd,
>> Yes, it's using RDMA-CM. I have re-connected the network and the
> This might be related to the fact that you need to configure the RDMA CM mode
> using configfs. (By default it's V1)


This isn't in fact working for me in 4.7+ (does work fine in OFED kernel 3.10).
Write to default_roce_mode does give Permission denied even for root (haven't 
debugged this one, however).

-- 

Marta Rybczynska 

Phone : +33 6 71 09 68 03 
mrybczyn at kalray.eu