From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.nokia.com ([192.100.122.230] helo=mgw-mx03.nokia.com) by bombadil.infradead.org with esmtps (Exim 4.72 #1 (Red Hat Linux)) id 1OLzed-0006cq-P0 for linux-mtd@lists.infradead.org; Tue, 08 Jun 2010 14:19:48 +0000 Subject: Re: UBIFS failed to recover master node From: Artem Bityutskiy To: twebb In-Reply-To: References: <1274763914.2106.1.camel@localhost> Content-Type: text/plain; charset="UTF-8" Date: Tue, 08 Jun 2010 17:17:28 +0300 Message-ID: <1276006648.5677.20.camel@localhost> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: Lei Wen , linux-mtd@lists.infradead.org Reply-To: dedekind1@gmail.com List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2010-06-08 at 09:44 -0400, twebb wrote: > I've attached a log file that captures the problem I'm seeing. twebb, you did not enable debugging messages. But it looks like they are not actually needed. > The > log includes failures on 2 of 4 UBIFS volumes that are part of a > single MTD device (and shows the other 2 volumes being > mounted/umounted without error). > > It appears from the log that the problem is associated with "corrupt > empty space" which can be seen in the log at lines 28, 313, 347, and > 359. Could this be HW ECC failing to correct bit errors on reads? > Any suggestions on what this problem would be helpful. Yes, HW fails to correct bit errors. Why these errors are there - this it the question. May be MLC-related. You need to debug this. Or send me your board, I can try to take a look Did you enable UBI extra self checks? Best Regards, Artem Bityutskiy (Артём Битюцкий)