From owner-freebsd-questions@FreeBSD.ORG Tue Aug 18 19:56:25 2009 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 46629106568B for ; Tue, 18 Aug 2009 19:56:25 +0000 (UTC) (envelope-from archon@silvertree.org) Received: from arthur.silvertree.org (arthur.silvertree.org [173.11.101.153]) by mx1.freebsd.org (Postfix) with SMTP id 0484D8FC61 for ; Tue, 18 Aug 2009 19:56:24 +0000 (UTC) Received: (qmail 11734 invoked from network); 18 Aug 2009 12:29:43 -0700 Received: from webn1.ofoto.com (HELO ?192.168.62.44?) (66.128.224.196) by arthur.silvertree.org with SMTP; 18 Aug 2009 12:29:43 -0700 Message-Id: <00B06063-9872-4ACE-8767-1221C22E33EE@silvertree.org> From: Scott Schappell To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Date: Tue, 18 Aug 2009 12:29:42 -0700 X-Mailer: Apple Mail (2.936) Subject: Remounting a drive as read/write crashes the system and no dmesg.boot 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: Tue, 18 Aug 2009 19:56:25 -0000 I have a drive (/dev/ad2s1d) mounted to /backup that I want to be read only until the backup scripts run and then it will be read/write. If I set /etc/fstab to: /dev/ad2s1d /backup ufs ro 0 0 to mount it read only most of the time then do: umount /backup mount -o rw /backup the system crashes, it just reboots about 10 seconds into writing data. The system is perfectly stable with it mounted read/write. Also, dmesg.boot has completely disappeared from the system, and touch /var/log/dmesg.boot it does not get populated. # uname -a FreeBSD arthur.silvertree.org 7.2-RELEASE-p3 FreeBSD 7.2-RELEASE-p3 #1: Fri Aug 14 13:27:47 PDT 2009 root@arthur.silvertree.org:/usr/ obj/usr/src/sys/ARTHUR i386 Any suggestions on the remounting drive and dmesg.boot? Thanks! Scott P.S. It's good to be off of FreeBSD 4.11 :)