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Date:      Mon, 11 Apr 2016 22:36:17 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        Navdeep Parhar <navdeep@chelsio.com>
Cc:        Jim Harris <jimharris@freebsd.org>, Meny Yossefi <menyy@mellanox.com>,  "hselasky@freebsd.org" <hselasky@freebsd.org>,  "info@freebsdfoundation.org" <info@freebsdfoundation.org>, Oded Shanoon <odeds@mellanox.com>,  Hans Petter Selasky <hanss@mellanox.com>,  "freebsd-drivers@freebsd.org" <freebsd-drivers@freebsd.org>, Oren Duer <oren@mellanox.com>,  Warner Losh <imp@freebsd.org>, Max Gurtovoy <maxg@mellanox.com>,  "trasz@FreeBSD.org" <trasz@freebsd.org>
Subject:   Re: NVMe over fabrics support in FreeBSD
Message-ID:  <CANCZdfpXuphhCzWRftTGNzeg=vbZFhfueh3DuaA-gf8NS93yYA@mail.gmail.com>
In-Reply-To: <570C0289.6070707@chelsio.com>
References:  <DB5PR05MB1765396247B6E5E2912ACD3AC3940@DB5PR05MB1765.eurprd05.prod.outlook.com> <CAJP=Hc-=bY56YNoi=NjWfUDe5j=OeKFLfmJ6TPM4MrvsGb-z9g@mail.gmail.com> <570C0289.6070707@chelsio.com>

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On Mon, Apr 11, 2016 at 2:01 PM, Navdeep Parhar <navdeep@chelsio.com> wrote:

> On 04/11/2016 11:01, Jim Harris wrote:
> > On Mon, Apr 11, 2016 at 7:24 AM, Meny Yossefi <menyy@mellanox.com>
> wrote:
> >
> >> Hi,
> >>
> >> As you may be aware, in the last year or so a group of companies
> (Mellanox
> >> included) are defining the NVMe-over-fabric spec, and also developing
> the
> >> Linux drivers implementation (both initiator and target).
> >>
> >
> > Hi Meny,
> >
> > The spec is about to be finalized (next Q), and with that the code
> >> developed will become open source and available, under the GPL license.
> >>
> >> What are FreeBSD plans to support NVMe-over-fabrics?
> >>
> >
> > I am not aware of anyone working on NVMe-over-fabrics initiator support.
> > I've copied Warner Losh (imp@) who has also been doing some work on
> nvme(4)
> > in case he is aware of something going on here.
> >
> > For NVMe-over-fabrics target support, we at Intel are working on an SPDK
> > userspace NVMe-over-fabrics target that should work on FreeBSD.  I am not
> > aware of any in-tree FreeBSD NVMe-over-fabrics target work going on
> however.
> >
> >
> >> Is there a parallel effort happening or planned to happen as soon as the
> >> spec becomes available?
> >> Is there a plan/facility to allow the GPL Linux code ported to FreeBSD?
> >>
> >
> > Not really.  I think we would need the Linux code relicensed to BSD (or
> > dual GPL/BSD) to allow porting to FreeBSD.
>
> +1.  We (Chelsio) have a working NVMe over fabrics implementation as
> well and would be interested in getting it to run on FreeBSD.
>

While I've done a CAM front end to replace nvd, I've done nothing with
fabrics. However, it seems like a good fit to CAM...

Warner



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