[ewg] [GIT PULL compat-rdma] qib for OFED 4.8

[Davis, Arlin R]

All,

Here is a quick summary of OFED 4.8 and SRP blocking bugs. Please correct/comment if I have it wrong.

- SL7.2 and SL7.3 SRP support is a must for DDN, need latest upstream SRP 4.11 fixes
- No resources available to backport or integrate the SRP 4.11 base or fixes into OFED 4.8 
- ib_srp_backport (4.11 base) installs/builds/runs on OFED 4.8 for both 7.2 and 7.3
- SL7.3+OFED+srp_backport fixes 2632 
- SL7.2+OFED+srp_backport still hitting bug 2632 
- SL7.2+inbox_infiniband+srp_backport (no OFED) still hitting 2632 and 2634 (slightly different but still seeing CM DREQ) 
- Bug 2632, 2634 still open, no resolution and no ETA on fix from maintainer

Given that we still have the same issues without OFED installed and no ETA on fixes, I would suggest moving forward and releasing OFED 4.8 GA. We can document issues and process for applying upstream SRP fixes in the release notes. 

If there are no objections, I would like Vlad to modify OFED release notes, add the 2 remaining bugs to known issues, and add backport procedure for SRP upstream as follow:

http://bugs.openfabrics.org/show_bug.cgi?id=2632
http://bugs.openfabrics.org/show_bug.cgi?id=2634

The ib_srp-backport procedure is as follows:
 1. Install the OS (RHEL, SLES, ...).
 2. Install OFED.
 3. Install the ib_srp-backport driver:
 	git clone https://github.com/bvanassche/ib_srp-backport
 	cd ib_srp-backport
 	make rpm
 	sudo rpm -U $PWD/rpmbuilddir/RPMS/*/*.rpm

We can then release GA package tomorrow with these changes and latest daily build.
Any other release notes changes?

Thanks,

Arlin

> -----Original Message-----
> From: ewg [mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Davis,
> Arlin R
> Sent: Friday, June 23, 2017 12:59 PM
> To: Vladimir Sokolovsky <vlad at dev.mellanox.co.il>; Bart Van Assche
> <Bart.VanAssche at wdc.com>; rsdance at soft-forge.com; Hanania, Amir
> <amir.hanania at intel.com>; Woodruff, Robert J
> <robert.j.woodruff at intel.com>; mschlining at ddn.com
> Cc: mdavis at ddn.com; ewg at lists.openfabrics.org; cfernandes at ddn.com
> Subject: Re: [ewg] [GIT PULL compat-rdma] qib for OFED 4.8
> 
> It seems like we now have a way to apply the latest SRP upstream fixes to
> OFED 4.8, tested with RH 7.2 and RH7.3. However, we still have 2 critical bugs
> (1 new one) on RH 7.2 even after the upstream fixes are applied. RH
> 7.3+OFED4.8+srp_backport seems to be fine.
> 
> http://bugs.openfabrics.org/show_bug.cgi?id=2632
> http://bugs.openfabrics.org/show_bug.cgi?id=2634
> 
> How does DDN want to proceed?
> Is it acceptable to apply upstream version/fixes to OFED 4.8 as follow,
> document in release notes?
> Can you tell us if the remaining bugs are related to OFED 4.8 or if
> RH7.2+infiniband+srp_backport has the same issues?
> 
> The ib_srp-backport procedure is as follows:
> 1. Install the OS (RHEL, SLES, ...).
> 2. Install OFED.
> 3. Install the ib_srp-backport driver:
> 	git clone https://github.com/bvanassche/ib_srp-backport
> 	cd ib_srp-backport
> 	make rpm
> 	sudo rpm -U $PWD/rpmbuilddir/RPMS/*/*.rpm
> 
> Thanks,
> 
> Arlin
> 
> > SRP is included already in OFED-4.8 as a part of linux-4.8 kernel and
> > I don't see any reason to include SRP code twice.
> > If some bug fixes have to be added there then there is a specific
> > place in compat-rdma git tree for the relevant patches.
> > If somebody is interested to add an additional SRP standalone package
> > then please send me the relevant patches for compat-rdma/ofed_scripts
> > and build git trees.
> >
> > Regards,
> > Vladimir
> >
> >
> > On 06/20/2017 09:01 PM, Davis, Arlin R wrote:
> > > Ok. Vlad, what would it take to get this backported version of SRP
> > > into OFED
> > 4.8?
> > >
> > >> -----Original Message-----
> > >> From: Bart Van Assche [mailto:Bart.VanAssche at wdc.com]
> > >> Sent: Tuesday, June 20, 2017 10:49 AM
> > >> To: vlad at dev.mellanox.co.il; rsdance at soft-forge.com; Davis, Arlin R
> > >> <arlin.r.davis at intel.com>; Hanania, Amir <amir.hanania at intel.com>;
> > >> Woodruff, Robert J <robert.j.woodruff at intel.com>;
> > >> mschlining at ddn.com
> > >> Cc: ewg at lists.openfabrics.org; cfernandes at ddn.com; mdavis at ddn.com
> > >> Subject: Re: [ewg] [GIT PULL compat-rdma] qib for OFED 4.8
> > >>
> > >> Hello Arlin,
> > >>
> > >> Adding a URL to the OFED README is not the same as including a
> > >> version of the ib_srp-backport driver in OFED. How can OFED users
> > >> know what version of the ib_srp-backport driver has been tested in
> > >> combination with which OFED version?
> > >>
> > >> Thanks,
> > >>
> > >> Bart.
> > >>
> > >> On Tue, 2017-06-20 at 17:18 +0000, Davis, Arlin R wrote:
> > >>> Marty,
> > >>>
> > >>> Would this work for DDN? We could add the URL and the SRP backport
> > >>> readme to the OFED release notes. I believe you had an issue when
> > >>> applying the backport to SL 7.2 and OFED 4.8 RC4 but I think Bart
> > >>> fixed that
> > >> already.
> > >>> Thanks, Arlin
> > >>>
> > >>>> Hello Arlin and Robert,
> > >>>>
> > >>>> A backported version of the 4.11 ib_srp driver that already has
> > >>>> been tested is available at https://github.com/bvanassche/ib_srp-
> > backport.
> > >>>> That driver builds fine against kernel.org kernels, RHEL/CentOS
> > >>>> kernels, openSuSE and SLES kernels and also against MOFED and OFED.
> > >>>> Has it already been considered to use that code base instead of
> > >>>> duplicating the backporting effort of the ib_srp driver?
> > >>>>
> > >>>> Thanks,
> > >>>>
> > >>>> Bart.
> 
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