[Lustre-discuss] Multi-Rail Configurations on a Multi-Port IB HCA

[Dardo D Kleiner - CONTRACTOR]

So are you suggesting I could just comment out the check in router.c?

Isaac Huang wrote:
> On Mon, Nov 16, 2009 at 04:38:03PM -0500, Dardo D Kleiner - CONTRACTOR wrote:
>> Stand down.  Don't know what was wrong with my configuration at first,
>> but it does instantiate the two NIDs on the host with multiple ports
>> on a single HCA.  Unfortunately,
>>
>> LustreError: 17771:0:(router.c:464:lnet_check_routes()) Routes to o2ib1 via xxx.xxx.182.193 at o2ib4 and xxx.xxx.182.129 at o2ib3 not supported
> 
> In fact, this limitation could be lifted. The reason it was there was
> that upper layers would rely on source NID in lnet messages to
> identify clients - i.e., it was assumed that messages from a same
> client would carry a same source NID in lnet message headers.
> 
> It seems that it's becoming an annoyance as multi-rail configurations
> grow more popular.
> 
>> So I couldn't have done what I wanted to anyway, the answer to my
>> question below "Should I be able to route over multiple lnets?" is
>> clearly no...
>>
>> - Dardo
> 
>