From hamish@cloud.net.au Fri Mar 28 04:46:00 2008 Received: from risingsoftware01.propagation.net ([66.221.33.65] ident=Debian-exim) by stoneboat.aleph1.co.uk with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1Jf6TP-0005z7-62 for yaffs@lists.aleph1.co.uk; Fri, 28 Mar 2008 04:45:59 +0000 Received: from c122-107-142-134.eburwd5.vic.optusnet.com.au ([122.107.142.134] helo=noddy.cloud.net.au) by risingsoftware01.propagation.net with esmtpsa (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1Jf6TM-0001Yr-5n for yaffs@lists.aleph1.co.uk; Thu, 27 Mar 2008 23:45:48 -0500 Received: from hamish by noddy.cloud.net.au with local (Exim 4.69) (envelope-from ) id 1Jf6TH-0007mp-Rb for yaffs@lists.aleph1.co.uk; Fri, 28 Mar 2008 15:45:43 +1100 Date: Fri, 28 Mar 2008 15:45:43 +1100 From: Hamish Moffatt To: yaffs@lists.aleph1.co.uk Message-ID: <20080328044543.GB29644@cloud.net.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.17+20080114 (2008-01-14) X-SA-Exim-Connect-IP: 66.221.33.65 X-SA-Exim-Mail-From: hamish@cloud.net.au X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-4.1 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.2.3 X-SA-Exim-Version: 4.2.1 (built Tue, 09 Jan 2007 17:23:22 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: [Yaffs] file system blank after mounting X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.9 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, 28 Mar 2008 04:46:00 -0000 I'm trying out YAFFS2 here with Linux 2.6.24. The kernel compiled fine and I can mount the file system on a blank MTD device. Now I've prepared an image using mkyaffs2image and written it, but when I mount the volume it's blank! $ ~/src/yaffs2/utils/mkyaffs2image /path/to/root elaraboot.yaffs2 convert [...] Operation complete. 418 objects in 36 directories 1753 NAND pages which looks promising. (My target is armeb, host is x86-64, hence convert option.) So I erase the device and write the image to it: # flash_eraseall /dev/mtd7 [...] Skipping bad block at 0x008e0000 Erasing 128 Kibyte @ 5280000 -- 32 % complete. Skipping bad block at 0x052a0000 Erasing 128 Kibyte @ 6120000 -- 37 % complete. Skipping bad block at 0x06140000 Erasing 128 Kibyte @ ffe0000 -- 99 % complete. And write the image: # nandwrite -p /dev/mtd7 elaraboot.yaffs2 Writing data to block 0 Bad block at 0, 1 block(s) from 0 will be skipped Writing data to block 20000 Bad block at 20000, 1 block(s) from 20000 will be skipped Writing data to block 40000 Bad block at 40000, 1 block(s) from 40000 will be skipped Writing data to block 60000 [...] Writing data to block c40000 Writing data to block c60000 # And mount it: # mount -t yaffs2 /dev/mtdblock7 /mnt # ls /mnt lost+found # du /mnt 2 /mnt/lost+found 4 /mnt So, perhaps I wrote it wrong. I tried: # nandwrite -o /dev/mtd7 elaraboot.yaffs2 ... # mount -t yaffs2 /dev/mtdblock7 /mnt # ls /mnt lost+found # du /mnt 1826902 /mnt/lost+found 1826904 /mnt What am I doing wrong? thanks Hamish -- Hamish Moffatt VK3SB