From owner-freebsd-current@FreeBSD.ORG Sat Jun 27 14:14:14 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 61FE0106566C; Sat, 27 Jun 2009 14:14:14 +0000 (UTC) (envelope-from uqs@spoerlein.net) Received: from acme.spoerlein.net (cl-43.dus-01.de.sixxs.net [IPv6:2a01:198:200:2a::2]) by mx1.freebsd.org (Postfix) with ESMTP id AF8C28FC08; Sat, 27 Jun 2009 14:14:13 +0000 (UTC) (envelope-from uqs@spoerlein.net) Received: from acme.spoerlein.net (localhost.spoerlein.net [127.0.0.1]) by acme.spoerlein.net (8.14.3/8.14.3) with ESMTP id n5REEC4h067446 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 27 Jun 2009 16:14:12 +0200 (CEST) (envelope-from uqs@spoerlein.net) Received: (from uqs@localhost) by acme.spoerlein.net (8.14.3/8.14.3/Submit) id n5REECXO067445; Sat, 27 Jun 2009 16:14:12 +0200 (CEST) (envelope-from uqs@spoerlein.net) Date: Sat, 27 Jun 2009 16:14:12 +0200 From: Ulrich =?utf-8?B?U3DDtnJsZWlu?= To: Alexander Motin Message-ID: <20090627141412.GN31709@acme.spoerlein.net> Mail-Followup-To: Alexander Motin , FreeBSD-Current , scottl@freebsd.org References: <4A4517BE.9040504@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4A4517BE.9040504@FreeBSD.org> User-Agent: Mutt/1.5.19 (2009-01-05) Cc: FreeBSD-Current , scottl@freebsd.org Subject: Re: RFC: ATA to CAM integration patch X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Jun 2009 14:14:14 -0000 On Fri, 26.06.2009 at 21:47:26 +0300, Alexander Motin wrote: > [Great stuff] > - make sure that you will be able to boot if your SATA disk devices > name change from some ad4 to ada0; I, personally, think this is not very good idea. People are used to CAM-devices getting enumerated as da0, da1, etc. All the documentation talks about ad0 for ATA and da0 (plus camcontrol) for SCSI, USB, Firewire devices. We also have fd0 and cd0 and should stick to two-letter-plus-number codes. So either make them all ad0 or da0. I'd vote for the latter, as that is what Linux is doing (more or less) and people are already familiar with USB drives or new SATA drives showing up as "SCSI drives, so they get the SCSI names". Anyway, thanks for the work and your consideration! The sooner we can unify the disk drive namespace, the better. Unrelated question: will it be possible to assign/reserve daX for specific busses? Like say all USB/Firewire devices will start at da9? Cheers, Ulrich Spörlein -- http://www.dubistterrorist.de/