nvme-fabrics: crash at nvme connect-all

[Marta Rybczynska]

----- Le 10 Juin 16, à 15:40, Steve Wise swise at opengridcomputing.com a écrit :

>> >> Thanks Marta.  That card has less memory than the T580-CR.  I'm checking with
>> >> Chelsio on the details.  The "-SO" might mean a mem-free card.
>> >>
>> >> Also, can you email me the output of 'cat
>> > /sys/kernel/debug/cxgb4/blah/meminfo'?
>> 
>> Here it is:
>> # cat /sys/kernel/debug/cxgb4/0000\:09\:00.4/meminfo
>> EDC0:           0x0-0x2fffff [3.00 MiB]
>> EDC1:           0x300000-0x5fffff [3.00 MiB]
> 
> 
> The "-SO" cards have no external off-chip memory, as seen above.  If it did have
> off-chip memory there would be a "MC0" and possibly "MC1" lines above with a
> large amount of memory.    Like this (T580-CR):
> 
> MC0:            0x600000-0x405fffff [1.00 GiB]
> MC1:            0x40600000-0x805fffff [1.00 GiB]
> 
> So your -SO cards will only handle a very small amount of RDMA load.
> 

Thanks Steve for looking up into this. It's a good testcase then :)

Marta