From owner-freebsd-current@FreeBSD.ORG Sat Jun 27 23:18:06 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 86A84106564A; Sat, 27 Jun 2009 23:18:06 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.freebsd.org (Postfix) with ESMTP id D031B8FC17; Sat, 27 Jun 2009 23:18:05 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from inchoate.gsoft.com.au (ppp121-45-162-173.lns11.adl2.internode.on.net [121.45.162.173]) (authenticated bits=0) by cain.gsoft.com.au (8.13.8/8.13.8) with ESMTP id n5RNI23n001576 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Sun, 28 Jun 2009 08:48:02 +0930 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: freebsd-current@freebsd.org Date: Sun, 28 Jun 2009 08:47:43 +0930 User-Agent: KMail/1.9.10 References: <4A4517BE.9040504@FreeBSD.org> <20090627141412.GN31709@acme.spoerlein.net> <4A462A7A.20005@haruhiism.net> In-Reply-To: <4A462A7A.20005@haruhiism.net> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart19173528.ozoyCsvDn6"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200906280847.59316.doconnor@gsoft.com.au> X-Spam-Score: -1.309 () AWL,BAYES_00,RDNS_DYNAMIC X-Scanned-By: MIMEDefang 2.63 on 203.31.81.10 Cc: scottl@freebsd.org, Alexander Motin , Kamigishi Rei 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 23:18:06 -0000 --nextPart19173528.ozoyCsvDn6 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Sat, 27 Jun 2009, Kamigishi Rei wrote: > Hello, hope you're having a nice day, > > Ulrich Sp=C3=B6rlein wrote: > > 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". > > This poses the question of daXX enumeration order. I've already had > some 'fun' with an IBM server which has an LVD/320 SCSI controller. > While the controller's bus was enumerated properly, somehow if you > attach an USB mass storage device before the system boot that said > mass storage could suddenly appear earlier than one of the SCSI disks > (that was on 7.0-RELEASE) thus breaking the boot process sometimes > (when it appeared as da0). 7.2 has UFSID in GENERIC so you can mount your disks that way which is=20 non-ambiguous. Unfortunately you can't specify swap this way because it has no ID, I=20 don't know how hard it would be to add such a thing (which would=20 require a mkswap or somesuch, and modification to the dump & swap=20 code..) =2D-=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C --nextPart19173528.ozoyCsvDn6 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (FreeBSD) iD8DBQBKRqin5ZPcIHs/zowRAqgIAKCKFJhhsT3oDd5kMe5YhKuleQLfbgCgq41k sBBb/9HN2Z8SF65bD6hkuiE= =OdYh -----END PGP SIGNATURE----- --nextPart19173528.ozoyCsvDn6--