From owner-freebsd-questions@FreeBSD.ORG Fri Aug 21 05:22:36 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 DCCB3106568B for ; Fri, 21 Aug 2009 05:22:36 +0000 (UTC) (envelope-from mel.flynn+fbsd.questions@mailing.thruhere.net) Received: from mailhub.rachie.is-a-geek.net (rachie.is-a-geek.net [66.230.99.27]) by mx1.freebsd.org (Postfix) with ESMTP id A0B778FC65 for ; Fri, 21 Aug 2009 05:22:36 +0000 (UTC) Received: from smoochies.rachie.is-a-geek.net (mailhub.lan.rachie.is-a-geek.net [192.168.2.11]) by mailhub.rachie.is-a-geek.net (Postfix) with ESMTP id 21DBC7E859; Thu, 20 Aug 2009 21:22:35 -0800 (AKDT) From: Mel Flynn To: freebsd-questions@freebsd.org Date: Thu, 20 Aug 2009 21:22:32 -0800 User-Agent: KMail/1.11.4 (FreeBSD/8.0-BETA2; KDE/4.2.4; i386; ; ) References: <00B06063-9872-4ACE-8767-1221C22E33EE@silvertree.org> <4A8E0837.5020608@silvertree.org> <4A8E091B.9050408@silvertree.org> In-Reply-To: <4A8E091B.9050408@silvertree.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200908202122.33591.mel.flynn+fbsd.questions@mailing.thruhere.net> Cc: Scott Schappell Subject: Re: 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: Fri, 21 Aug 2009 05:22:36 -0000 On Thursday 20 August 2009 18:40:27 Scott Schappell wrote: > On 8/20/2009 7:36 PM, Scott Schappell wrote: > > On 8/20/2009 4:31 PM, Mel Flynn wrote: > >> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/ker > >>neldebug.html > > > > OK, /backup was mounted read only, I did the following > > > > umount /backup > > mount -o rw /backup > > [root@arthur ~]# dd if=/dev/zero of=/backup/testfile bs=1024 > > dd: /backup/testfile: end of device > > 21122+0 records in > > 21121+0 records out > > 21627904 bytes transferred in 2.215991 secs (9759924 bytes/sec) > > [root@arthur ~]# > > As of now, the dd command above has not crashed and it's past 3 GiB, > using the mount -u -w syntax versus unmount, mount -o rw. > > This is puzzling. I agree. These errors make no sense to me, which leads me to drive cable or physical memory problems, perhaps filesystem corruption. Since you have plenty of space on /home, is it possible for you to move whatever's on /backup to /home, then newfs /backup? Of course you could try fsck -y /backup in single user, but with these weird errors, I trust the filesystem on that disk as far as I can throw it. -- Mel