From owner-freebsd-questions@FreeBSD.ORG Fri Oct 26 16:33:40 2012 Return-Path: <owner-freebsd-questions@FreeBSD.ORG> Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 5EAE6E95 for <freebsd-questions@freebsd.org>; Fri, 26 Oct 2012 16:33:40 +0000 (UTC) (envelope-from jdc@koitsu.strangled.net) Received: from qmta03.emeryville.ca.mail.comcast.net (qmta03.emeryville.ca.mail.comcast.net [IPv6:2001:558:fe2d:43:76:96:30:32]) by mx1.freebsd.org (Postfix) with ESMTP id 3FE7E8FC08 for <freebsd-questions@freebsd.org>; Fri, 26 Oct 2012 16:33:40 +0000 (UTC) Received: from omta23.emeryville.ca.mail.comcast.net ([76.96.30.90]) by qmta03.emeryville.ca.mail.comcast.net with comcast id FoAs1k0011wfjNsA3sZfZa; Fri, 26 Oct 2012 16:33:39 +0000 Received: from koitsu.strangled.net ([67.180.84.87]) by omta23.emeryville.ca.mail.comcast.net with comcast id FsZe1k00C1t3BNj8jsZeia; Fri, 26 Oct 2012 16:33:39 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 4BCCE73A33; Fri, 26 Oct 2012 09:33:38 -0700 (PDT) Date: Fri, 26 Oct 2012 09:33:38 -0700 From: Jeremy Chadwick <jdc@koitsu.org> To: schmidt@ze.tum.de Subject: Re: ata controller problem Message-ID: <20121026163338.GA32286@icarus.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd@edvax.de, freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions <freebsd-questions.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions> List-Post: <mailto:freebsd-questions@freebsd.org> List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=subscribe> X-List-Received-Date: Fri, 26 Oct 2012 16:33:40 -0000 Regarding this: http://lists.freebsd.org/pipermail/freebsd-questions/2012-October/245862.html No no NO *NO*! I wish people would stop recommending this utter garbage. There is absolutely no justification behind using the highly convoluted labelling mechanisms at multiple layers within FreeBSD. There are 3 (possibly 4) different "label" mechanisms which do nothing but confuse the user, or cause other oddities/complexities. Good grief, there is so much hard evidence on the mailing lists over the past 5 (maybe even 7?) years talking about the utter mess that is filesystem/device/geom/blahblah labels that to recommend this is borderline insane. The proper way to solve this problem is to user /boot/loader.conf tie-downs to assign each disk to each individual controllers' device number (e.g. ada0 --> scbus0 --> ahcich0, or whatever you want). Please note I said ahcichX, not ahciX. Different things. I have helped others in the past do this; Randy Bush is one such person. Taken directly from my /boot/loader.conf with a single SATA controller, but obviously this can be adjusted to whatever you want. # "Wire down" device names (ada[0-5]) to each individual port # on the SATA/AHCI controller. This ensures that if we reboot # with a disk missing, the device names stay the same, and stay # attached to the same SATA/AHCI controller. # http://lists.freebsd.org/pipermail/freebsd-fs/2011-March/011036.html # hint.scbus.0.at="ahcich0" hint.scbus.1.at="ahcich1" hint.scbus.2.at="ahcich2" hint.scbus.3.at="ahcich3" hint.scbus.4.at="ahcich4" hint.scbus.5.at="ahcich5" hint.ada.0.at="scbus0" hint.ada.1.at="scbus1" hint.ada.2.at="scbus2" hint.ada.3.at="scbus3" hint.ada.4.at="scbus4" hint.ada.5.at="scbus5" See CAM(4) man page (read it, don't skim!) for full details. Just please for the love of god do not use labels to solve this. -- | Jeremy Chadwick jdc@koitsu.org | | UNIX Systems Administrator http://jdc.koitsu.org/ | | Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |