[ewg] Review of OFA Logo NFS/RDMA testing

[Rimmer, Todd]

I think it is wise to include testing with a variety of SMs and SM versions.

Procedurally, it would be recommended to stop the SMs, reboot the fabric, start the new SMs.

Todd Rimmer
DCSG Architecture
Voice: 610-312-2152     Fax: 610-312-2233
Todd.Rimmer at intel.com


> -----Original Message-----
> From: ewg-bounces at lists.openfabrics.org [mailto:ewg-
> bounces at lists.openfabrics.org] On Behalf Of Edward Mossman
> Sent: Wednesday, April 09, 2014 2:54 PM
> To: Chuck Lever
> Cc: Bob Noseworthy; ewg at lists.openfabrics.org; Shirley Ma
> Subject: Re: [ewg] Review of OFA Logo NFS/RDMA testing
> 
> Chuck,
> 
> Thanks for taking the time to look through our test plan and provide
> suggestions. I will bring these suggestions to the next IWG meeting and we
> will vote on whether to include some or all in the test plan.
> 
> Previously we were executing our InfiniBand tests with OpenSM as the
> Master SM, then disabling OpenSM and turning on the Subnet Managers
> that are included in our InfiniBand switches. This was meant to expose any
> interoperability issues with, say, a Subnet Manager on an Intel switch
> controlling a fabric comprised of Mellanox and Intel HCAs. We have since
> scaled back and only require a device to be interoperable when using
> OpenSM.
> 
> Thanks,
> Edward
> 
> On Mon, 7 Apr 2014, Chuck Lever wrote:
> 
> > Hi Edward-
> >
> > After reviewing your NFS/RDMA Logo test plan
> (https://iol.unh.edu/ofatestplan), I had some thoughts.
> >
> > No "vers=" mount option is specified on your clients, thus only one NFS
> version is tested.
> >
> > The default NFS version depends on the client version and server
> configuration, so it is better to set the NFS version explicitly. I recommend
> adding a specific "vers=" setting on your scripted mount commands, and run
> the cthon tests at least three times (with a umount/mount between each
> run): once for vers=2, once for vers=3, and once for vers=4 (4.0). Eventually
> 4.1 and 4.2 should be added when Linux NFS/RDMA is updated to support
> those minor versions. For now the two critical NFS versions are NFSv3 and
> NFSv4.0.
> >
> > Since you have a broad array of hardware in your test harness, that would
> be an opportunity for more extensive platform interoperability testing. The
> following areas might be interesting and appropriate.
> >
> > 	. 32-bit v. 64-bit
> > 	. 4KB pages v. other page sizes
> > 	. Little v. big endian
> >
> > Simply ensure your test matrix includes these combinations of clients and
> servers. Power will already get you large page sizes, for example.
> >
> > I am curious about the test plan's requirement to run your NFS/RDMA tests
> using every SM you have in your lab. Can you elaborate on that
> requirement?
> >
> > --
> > Chuck Lever
> > chuck[dot]lever[at]oracle[dot]com
> >
> >
> >
> >
> 
> --
> Edward Mossman
> UNH-IOL OFILG
> emossman at iol.unh.edu