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

[Davis, Arlin R]

Bob and Rupert,

What does this mean for the next OFA Interop Testing event with OFED 4.8? Can we adjust the test plan and remove NFS-rdma dependency? Maybe bring it back for OFED 4.8-1?

Arlin
 
> 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
> >
> >
> >
> >
> >
>