[ewg] OFA EWG Meeting: Monday, Apr, 10, 2017, 09:00 AM US Pacific Time (12pm EST) - Minutes

[David Z. Dai]

Hi, Jeff, Arlin, Rupert:
  As far as I know, the NFS over RDMA test is run as mandatory for every
OFA Interoperability debug event and logo event.
The latest Test Plan is under this URL, section 13.2 of page 74:
https://www.iol.unh.edu/sites/default/files/test-services/ofa/testsuites/OFA-IWG_Interoperability_Test_Plan-v2.05.pdf

The up coming debug event is scheduled between 05/01/17 to 05/15/17. 
Based on Jeff's comment, NFS over RDMA backport won't make to that date.

I will let UNH-IOL lab know that NFS over RDMA functionality is not in
OFED-4.8-rc1 for this debug event.

Usually UNH-IOL will keep their testing environment for a while after
the event.
Any time NFS over RDMA functionality is available in the newer
OFED-4.8-rcx level, I will inform UNH-IOL lab. Hopefully they can run
the NFS over RDMA part to verify.

Thanks! - David
   
On Mon, 2017-04-10 at 22:56 +0000, Davis, Arlin R wrote:
> Jeff, thanks for the reply. Let’s discuss what is driving this before
> jumping.
> 
>  
> 
> David/Rupert,
> 
>  
> 
> Can you comment on the need for NFS-rdma; is it a requirement for
> interop program?
> 
> Are there other hard requirements driving the need for NFS-rdma in
> OFED 4.8?
> 
>  
> 
> -arlin
> 
>  
> 
> NFS-rdma backports – deferred until OFED 4.8-1 (fall 2017?).
> 
> 
>         § IBM would prefer NFS-rdma support in 4.8
>         
>         § What is confidence level for NFS-rdma in 4.8-1? 
>         
> 
> 
> First, it's nice to know that someone wants NFS-rdma for 4.8. When I
> asked Susan and others at the OFA workshop,  they couldn't name anyone
> who uses it (except possibly us (NASA) - unfortunately we don't
> despite my suggestions, although that may soon change).
> 
> As far as getting the backports done, I got as far as getting a
> successful build on both SLES12SP2 and RHEL7.3. Unfortunately, when I
> tried to run connectathon04 against it, only half the tests passed.
> After several discussions at OFA workshop with Chuck Lever (upstream
> NFS-rdma author) and Woody, I decided that the best way to proceed was
> to start with a base NFS-rdma source earlier than 4.8 (e.g., perhaps
> 4.5). Then if I get that to build and pass tests, start adding Chuck's
> patches incrementally if they fix bugs or add important features. Then
> get code building and tested as patches are added. One big problem
> with NFS-rdma is that the patches potentially touch all of NFS, and it
> would not be desirable to backport all of NFS since the distro's have
> done extensive QA, and NFS is such a critical part of the system.
> 
> With that said, I can resume my backport efforts, and see how far I
> get. Given the amount of work involved, I'm not sure if I can make the
> May 15 release, but I can try. What do you think?
> 
> 
> 
>  
> 
> 
> Thanks,
> 
> -jeff
> 
> 
> 
> 
>