From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ww0-f49.google.com ([74.125.82.49]) by canuck.infradead.org with esmtps (Exim 4.72 #1 (Red Hat Linux)) id 1QGUvo-0000cF-KP for linux-mtd@lists.infradead.org; Sun, 01 May 2011 11:35:21 +0000 Received: by wwb39 with SMTP id 39so3915615wwb.18 for ; Sun, 01 May 2011 04:35:18 -0700 (PDT) Message-ID: <4DBD4572.5040508@gmail.com> Date: Sun, 01 May 2011 13:35:14 +0200 From: Angelo Dureghello MIME-Version: 1.0 To: linux-mtd@lists.infradead.org Subject: help request, jffs2 fs files get lost Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi all, i am looking for some help on an issue with jffs2: i can create jffs2 fs, mount, store edit/write some files, unmount, but in a next mount i find no more files/dirs. MTD probe detect correctly my flash, the chip allows erase sectors of 4KB, or blocks of 64KB. MTD shows correctly a 0x1000 erase size. / # / # cat /proc/mtd dev: size erasesize name mtd0: 00010000 00001000 "Colilo (64K)" mtd1: 002f0000 00001000 "Kernel+ROMfs (3008K)" mtd2: 00100000 00001000 "JFFS2 (1024K)" <--- want to use this partition only as jffs2 to store non volatile data mtd3: 0009d000 00001000 "ROMfs" So from uClinux, i try to prepare the jffs2 fs: # eraseall /dev/mtd2 erased 1024 Kibyte @ 0 -- 100% complete. cat /dev/mtd2 i see the flash has been cleared then i create a folder "backup" in /var with some files and try to crete the jffs2 fs: mkfs.jffs2 -d backup -o jffs2.img cp /deV/mtd2 jffs2.img Then i just mount/umount the device, but i get often the issue decribed. Any help is really appreciated. many thanks angelo