From owner-freebsd-questions@FreeBSD.ORG Fri May 7 15:17:48 2010 Return-Path: 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 2C3FA1065678 for ; Fri, 7 May 2010 15:17:48 +0000 (UTC) (envelope-from ahamiltonwright@mta.ca) Received: from smtpx.mta.ca (smtpx.mta.ca [138.73.1.138]) by mx1.freebsd.org (Postfix) with ESMTP id DD2F38FC17 for ; Fri, 7 May 2010 15:17:47 +0000 (UTC) Received: from [138.73.29.51] (port=49154 helo=qemg.org) by smtpx.mta.ca with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.71) (envelope-from ) id 1OAPJ8-00076g-2G; Fri, 07 May 2010 12:17:42 -0300 Date: Fri, 7 May 2010 12:17:42 -0300 (ADT) From: "A. Wright" To: krad In-Reply-To: Message-ID: References: <20100505195544.be380d17.freebsd@edvax.de> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: ahamiltonwright@mta.ca Cc: Polytropon , FreeBSD Questions Subject: Re: dangerously dedicated disks and 8-stable status X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 May 2010 15:17:48 -0000 On Fri, 7 May 2010, krad wrote: > FYI happened on 2nd box as well but I least it didnt catch me out this time > 8). It seems that pre freebsd-8 it is permissible to use format > s1[a-h] , however in freebsd-8+ to you are forced to use the format > [a-h]. I have noted peculiarities also in this move (as noted above: 8.0-RELEASE upgrade -- no files visible), but different ones from what you are seeing. I have begun to suspect that part of the issue is that my drives at one time were set up in "dangerously dedicated" mode, but later changed to "slice-based" mode. It may be that there are still sectors near the beginning of the disk with old information in them. Currently I have one disk remaining from the old setup, for which I only get /dev entries produced for the device, and for partition 'a' (ie, /dev/ad10, /dev/ad10a), however if accessed from 7.2, I can see and mount /dev/ad10s1[a,d-g]. Might your disks have similar "old" information in the first track (but not in the first sector), or do you refer to a new disk, or one to which a number of sectors of zeros was written? Thanks for the info, A.