From owner-freebsd-scsi@freebsd.org Mon Jan 14 14:49:31 2019 Return-Path: Delivered-To: freebsd-scsi@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 27F4214A1EE4 for ; Mon, 14 Jan 2019 14:49:31 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (mithlond.kdm.org [96.89.93.250]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mithlond.kdm.org", Issuer "mithlond.kdm.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 15F178B235 for ; Mon, 14 Jan 2019 14:49:29 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (localhost [127.0.0.1]) by mithlond.kdm.org (8.15.2/8.14.9) with ESMTPS id x0EEnR2N075133 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 14 Jan 2019 09:49:28 -0500 (EST) (envelope-from ken@mithlond.kdm.org) Received: (from ken@localhost) by mithlond.kdm.org (8.15.2/8.14.9/Submit) id x0EEnRuv075132; Mon, 14 Jan 2019 09:49:27 -0500 (EST) (envelope-from ken) Date: Mon, 14 Jan 2019 09:49:27 -0500 From: "Kenneth D. Merry" To: "Kevin P. Neal" Cc: freebsd-scsi@freebsd.org Subject: Re: Looking for PCI express SCSI diff card recommendations Message-ID: <20190114144927.GP40028@mithlond.kdm.org> References: <9D2ED808-CE43-41BE-9698-45F0D85843A7@langille.org> <9C8F819A-7B8F-46C8-90E7-BDD16C785BD8@samsco.org> <36153F07-0FE2-4DD5-9BD9-EBD18F88FC10@kdm.org> <20190114142631.GA18432@neutralgood.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190114142631.GA18432@neutralgood.org> User-Agent: Mutt/1.5.23 (2014-03-12) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mithlond.kdm.org [127.0.0.1]); Mon, 14 Jan 2019 09:49:28 -0500 (EST) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS autolearn=ham autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mithlond.kdm.org X-Rspamd-Queue-Id: 15F178B235 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of ken@kdm.org designates 96.89.93.250 as permitted sender) smtp.mailfrom=ken@kdm.org X-Spamd-Result: default: False [-3.98 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+a:mithlond.kdm.org]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[FreeBSD.ORG]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MX_GOOD(-0.01)[cached: mail.scsiguy.com]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.97)[-0.969,0]; IP_SCORE(-1.01)[ipnet: 96.64.0.0/11(-4.26), asn: 7922(-0.69), country: US(-0.08)]; FORGED_SENDER(0.30)[ken@FreeBSD.ORG,ken@kdm.org]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:7922, ipnet:96.64.0.0/11, country:US]; FROM_NEQ_ENVFROM(0.00)[ken@FreeBSD.ORG,ken@kdm.org] X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jan 2019 14:49:31 -0000 On Mon, Jan 14, 2019 at 09:26:31 -0500, Kevin P. Neal wrote: > On Mon, Jan 14, 2019 at 09:10:43AM -0500, Ken Merry wrote: > > If you want to use LTFS on FreeBSD, I ported IBM???s LTFS to FreeBSD: > > > > https://github.com/LinearTapeFileSystem/ltfs > > Any chance of that getting merged into the FreeBSD repo and becoming > officially supported? It would probably make the most sense to put it in the ports tree. It is a FUSE-based filesystem, and therefore easily installable as a port. Making it a port would also make it easier to keep up to date with IBM's development. (It is under active development.) As far as putting it in the base system, I think it is something that will get used as a standalone filesystem fairly infrequently. Very few people will have an IBM LTO-5 or newer drive / library. And most people shelling out the money for any amount of tape are either going to run a backup package or archive package on it, not just LTFS by itself. So, with stock FreeBSD, you would most likely run Bacula or Amanda for backup usage. I'm not sure if there are commercial backup packages with FreeBSD support. If you want a commercial FreeBSD-based archive product that will manage your tape library and do a lot more: https://spectralogic.com/products/blackpearl/ BlackPearl uses LTFS as its tape storage format, so that even if you want to switch to something else later on, you aren't "stuck" with a proprietary tape format. It can also import other vendors' LTFS-formatted tapes, assuming they follow the standard... If someone would like to make a port out of LTFS, that's fine with me... (Just a little busy with other stuff right now, and I'm not a ports committer.) Ken -- Kenneth Merry ken@FreeBSD.ORG