From owner-freebsd-scsi Wed Nov 29 11:43:56 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id F101E37B402 for ; Wed, 29 Nov 2000 11:43:52 -0800 (PST) Received: from zeppo.feral.com (IDENT:mjacob@zeppo [192.67.166.71]) by feral.com (8.9.3/8.9.3) with ESMTP id LAA23500; Wed, 29 Nov 2000 11:43:33 -0800 Date: Wed, 29 Nov 2000 11:43:29 -0800 (PST) From: Matthew Jacob Reply-To: mjacob@feral.com To: Nat Lanza Cc: Tom Samplonius , Chuck McCrobie , freebsd-scsi@FreeBSD.ORG Subject: Re: RFC 2143 (IP over SCSI) Support in FreeBSD In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 24 Nov 2000, Nat Lanza wrote: > Tom Samplonius writes: > > > Is there planned support for SCSI over IP? I've just seen a storage > > server that uses SCSI over IP. The reasoning is that gigabit ethernet is > > just as fast as fibrechannel, and much more standard. They have drivers > > for Linux and NT, and have announced that a driver will be released for > > FreeBSD in early 2001? Apparently the driver simply probes the LAN for > > SCSI devices and attaches each discovered storage server as a LUN. For > > some reason the name of this product escapes me. > > Please keep in mind that SCSI-over-IP is currently the topic of an > active IETF working group, and the protocol development is not > finished. It would probably be best to wait for the standard to > actually be finalized before adding support, since having support that > doesn't interoperate is not much better than having no support. The > current timeline has the standard proposal being submitted next May. Yes and no. The ANSI SCSI-2 spec took years to finalize. Same for SCSI-3. If it's a worthwhile feature, and you're dealing just with the software instantiation, it might be worth looking at doing for early releases. If you're burning silicon, hmm, that'd be questionable. > > If you're interested in following the progress of the standard, the IP > Storage working group's charter is here: > > http://www.ietf.org/html.charters/ips-charter.html > > Additionally, there is a public mailing list archived here: > > http://ips.pdl.cs.cmu.edu/mail/maillist.html > > Subscription information for the list is available on the charter > page. > > > Our lab is working on SCSI-over-IP, and our target platforms are FreeBSD > and Linux. We would most likely be interested in contributing our code to > the FreeBSD community when we're done, but it's far too early to make any > promises. Can you keep us posted on this? We'd absolutely love it if CMU (d'ya work with Garth?) did this. > > Also, discussion at the SCSI panel at BSDCon indicated that the > FreeBSD SCSI developers are certainly interested in providing a > framework in which SCSI-over-IP can be supported well. Our initial > results show that it's possible to build a system with decent > performance over 100bT and gigabit links without any modifications to > the OS -- the driver builds as a self-contained KLD, and acts much > like any other SCSI HBA driver. Ah. Cool. Is this available to be looked at? Define 'decent'... -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message