From owner-freebsd-questions@FreeBSD.ORG Mon Jan 4 04:18:17 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DDEC01065672 for ; Mon, 4 Jan 2010 04:18:17 +0000 (UTC) (envelope-from tigger@lilypie.com) Received: from lilypie.com (lilypie.com [67.19.138.162]) by mx1.freebsd.org (Postfix) with ESMTP id 95B868FC15 for ; Mon, 4 Jan 2010 04:18:17 +0000 (UTC) Received: (qmail 6162 invoked by uid 1001); 4 Jan 2010 03:51:36 -0000 Date: Mon, 4 Jan 2010 14:51:36 +1100 From: Tigger To: freebsd-questions@freebsd.org Message-ID: <20100104035136.GA64004@edward.lilypie.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.3i Subject: How to confirm hard drive ufsid before upgrade? 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: Mon, 04 Jan 2010 04:18:17 -0000 Hello. I recently upgraded 7 remote servers from FreeBSD 7.2 to 8.0. During the process, 3 servers had hard drive ufsid issues. Basically during the reboot between 7.2 to 8.0, the drive ids 'changed'. I'm using ufsids in fstab. All servers have two SCSI drives, but have all been set-up by different people that have come from a Linux background. I can only assume they have used different commands and methods to format the drives. I'm assuming this issue is related to GEOM_ changes, however it is not very clear how to prevent this from happening (I'm sure I'm missing something). I have one more machine to go which is a lot more critical than the others and do not wish to have this one down for as long as the others where. It took about 6 hours to get the tech guys at the other end to get 2 of the boxes back up, the other one was easy to get up, but all data was 'lost' on one drive and had to be restored from a back-up. -Tig