From owner-freebsd-questions@FreeBSD.ORG Mon Jun 30 19:18:06 2008 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 A940F106564A for ; Mon, 30 Jun 2008 19:18:06 +0000 (UTC) (envelope-from wmoran@potentialtech.com) Received: from mail.potentialtech.com (internet.potentialtech.com [66.167.251.6]) by mx1.freebsd.org (Postfix) with ESMTP id 78AD78FC12 for ; Mon, 30 Jun 2008 19:18:06 +0000 (UTC) (envelope-from wmoran@potentialtech.com) Received: from vanquish.ws.pitbpa0.priv.collaborativefusion.com (pr40.pitbpa0.pub.collaborativefusion.com [206.210.89.202]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.potentialtech.com (Postfix) with ESMTPSA id BFCECEBC08; Mon, 30 Jun 2008 15:18:05 -0400 (EDT) Date: Mon, 30 Jun 2008 15:16:57 -0400 From: Bill Moran To: Jim Message-Id: <20080630151657.70798100.wmoran@potentialtech.com> In-Reply-To: <80f4f2b20806301212n1bf6137bq75f40464212c2304@mail.gmail.com> References: <80f4f2b20806300401x71483882x8e9a6cf919f1ff9@mail.gmail.com> <20080630073059.be11304d.wmoran@potentialtech.com> <80f4f2b20806300930p67ca1fd5xf9ad59d16889df36@mail.gmail.com> <20080630170400.GB65282@slackbox.xs4all.nl> <80f4f2b20806301212n1bf6137bq75f40464212c2304@mail.gmail.com> X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.9; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Roland Smith , freebsd-questions@freebsd.org Subject: Re: filesystem information 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, 30 Jun 2008 19:18:06 -0000 In response to Jim : > > I'm aware of nothing but a UPS can completely protect me from an > outage. I was just wondering why that ONE file system was misbehaving, > and the rest are prefectly fine - which seemed odd. Additionally, why > were files that are read, but not written, being lost? I can > understand losing files that are being written, but if there's a file > that has bene written several restarts ago, not written to thereafter, > and has been fine ever since, why is it being lost now? If the files themselves are disappearing, then it could be the directory entry that's getting corrupted. You mentioned mp3s earlier ... if I had to guess, I'd say you frequently add and rename files in that directory. If the power goes out during an update to the directory entry, it's anybody's guess as to what filenames could disappear. Even if you're not doing it directly, is your mp3 software writing temp or other status files to that directory? If you're curious, you could run your mp3 software under ktrace and then grep the output for file creation and removal syscalls. Just speculation. -- Bill Moran http://www.potentialtech.com