From manningc2@actrix.gen.nz Fri Jan 15 00:29:22 2010 Received: from smtp.firstline.co.nz ([203.167.210.162] helo=firstline.co.nz) by stoneboat.aleph1.co.uk with smtp (Exim 4.69) (envelope-from ) id 1NVa3u-0002Fv-NM for yaffs@lists.aleph1.co.uk; Fri, 15 Jan 2010 00:29:21 +0000 Received: (qmail 9555 invoked by uid 453); 15 Jan 2010 00:29:03 -0000 X-Virus-Checked: Checked by ClamAV on firstline.co.nz Received: from Unknown (HELO linux-dual-head.local) (10.14.210.25) by firstline.co.nz (qpsmtpd/0.40) with ESMTP; Fri, 15 Jan 2010 13:29:03 +1300 From: Charles Manning To: yaffs@lists.aleph1.co.uk Date: Fri, 15 Jan 2010 13:29:03 +1300 User-Agent: KMail/1.9.10 References: <6811210.864481263475538432.JavaMail.coremail@bj163app54.163.com> In-Reply-To: <6811210.864481263475538432.JavaMail.coremail@bj163app54.163.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201001151329.03077.manningc2@actrix.gen.nz> X-SA-Exim-Connect-IP: 203.167.210.162 X-SA-Exim-Mail-From: manningc2@actrix.gen.nz X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-1.2 required=4.5 tests=AWL,BAYES_05,SPF_NEUTRAL autolearn=no version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: Re: [Yaffs] lost all file X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.11 Precedence: list List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jan 2010 00:29:22 -0000 On Friday 15 January 2010 02:25:38 yang wrote: > I had port yaffs to my embed board(with a 512M nand flash and ucos system ) > for a few months. It work well mostly. But for a few times, I lost all > files in yaffs2 after a reboot, nothing left event in lost and found. It > seem to be a totally new disk partation. > This problem didn't happend frequently, and I can't find a method to > debug or hunt it down. > Any one konw what would case this happend? And ,what can I do to trace > this problem? Any suggest whould be appreciate! I've never see that happen. When this happens have a look at the dmesg. Turn on all tracing and try again. What does a nand dump look like? Perhaps the flash was erased or overwritten? -- Charles