From owner-freebsd-questions@FreeBSD.ORG Wed Oct 22 10:08:43 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 59F2516A4B3 for ; Wed, 22 Oct 2003 10:08:43 -0700 (PDT) Received: from station189.com (station189.com [203.194.198.184]) by mx1.FreeBSD.org (Postfix) with SMTP id EEA9743FBF for ; Wed, 22 Oct 2003 10:08:39 -0700 (PDT) (envelope-from rtjohan@syspres.com) Received: (qmail 17033 invoked from network); 22 Oct 2003 17:09:29 -0000 Received: from unknown (HELO syspres.com) (12.210.21.239) by station189.com with SMTP; 22 Oct 2003 17:09:29 -0000 Message-ID: <3F96B90B.4040302@syspres.com> Date: Wed, 22 Oct 2003 10:06:19 -0700 From: rtjohan@syspres.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031013 Thunderbird/0.3 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Greg 'groggy' Lehey References: <3F92406E.9020205@syspres.com> <20031021023944.GF42029@wantadilla.lemis.com> <3F95DA55.7030403@syspres.com> <20031022054946.GJ33152@wantadilla.lemis.com> <3F963743.7030502@syspres.com> <20031022081513.GM33152@wantadilla.lemis.com> In-Reply-To: <20031022081513.GM33152@wantadilla.lemis.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: FreeBSD Questions Subject: Re: Vinum Offset for Swap: 265 or 281? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Oct 2003 17:08:43 -0000 >>For instance you have partition "e" with size=3142987 and offset >>5242880, but the var volume uses sd len 3142987s driveoffset 524864s >>drive rootdev. Why is it necessary for each subdisk to be 16 lower >>then the partition it will be mapping? >> >> >Take /var for example. It's on partition e, which starts at offset >5242880 from the beginning of the disk. The subdisk starts at offset >5242864 from the beginning of the drive. The drive starts at offset >16 from the beginning of the disk, so the subdisk starts at 5242880 >from the beginning of the disk. > > Thanks for clarifying the difference between disk vs drive. That's the part I didn't understand well enough. I used those 16 subdisk offsets in my vinum config file, just didn't understand why they were there for all the subdisks. Now I do. Thanks, Richard