From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-bw0-f49.google.com ([209.85.214.49]) by canuck.infradead.org with esmtp (Exim 4.72 #1 (Red Hat Linux)) id 1PO093-0000QD-7J for linux-mtd@lists.infradead.org; Thu, 02 Dec 2010 03:47:46 +0000 Received: by bwz5 with SMTP id 5so7108830bwz.36 for ; Wed, 01 Dec 2010 19:47:44 -0800 (PST) Subject: Re: UBIFS partition on NOR flash not mountable after power cut test From: Artem Bityutskiy To: Mark Mason In-Reply-To: <20101129203306.GA22692@postdiluvian.org> References: <20101129195014.19224240@wker> <20101129203306.GA22692@postdiluvian.org> Content-Type: text/plain; charset="UTF-8" Date: Thu, 02 Dec 2010 05:47:39 +0200 Message-ID: <1291261659.14534.13.camel@koala> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: Anatolij Gustschin , linux-mtd@lists.infradead.org, Detlev Zundel Reply-To: dedekind1@gmail.com List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2010-11-29 at 15:33 -0500, Mark Mason wrote: > I have seen something similar in the last few months with Samsung > K9WAG08U1B-PIB0 chips on a PowerPC 8260. Sadly I can't be much help > since I no longer have access to the hardware and don't have detailed > notes anymore, but I did experience UBI/UBIFS corruption that > prevented mounting after power cycle tests. The frequency was > approximately what you quote, and there was a high volume of writes to > NAND. > > Reformatting the NAND was not a big problem for us, so we went with a > workaround and never had a chance to track down the actual problem > before the product shipped. > > Wish I could be more help. Well, you could have reported it, I usually try to provide at least some help... -- Best Regards, Artem Bityutskiy (Битюцкий Артём)