From mboxrd@z Thu Jan 1 00:00:00 1970 From: Woody Wu Date: Wed, 14 Aug 2013 06:12:17 +0800 Subject: [Buildroot] ubifs rootfs attached error In-Reply-To: <520A7922.2050703@gmail.com> References: <20130813130443.GA3676@zuhnb712> <520A36FB.80403@gmail.com> <20130813140840.GA5063@zuhnb712> <520A7922.2050703@gmail.com> Message-ID: <20130813221217.GA18527@zuhnb712> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net On Tue, Aug 13, 2013 at 08:21:22PM +0200, Stefan Peter wrote: > On 13.08.2013 16:08, Woody Wu wrote: > > > Stefan, thanks for the hints. Yes, my kernel configuration disalbed the > > NAND ECC. I like to study on that. But, do you think this is reason why > > my ubifs did not get attached? Thanks. > > Yes, definitively. I don't want to say that there are no other problems > in your setup, but as long as you can not read back exactly what you > have written to the flash, there is very little chance that UBI will work. > UBIFS is based upon MTD. And MTD relies on a working FLASH driver. As > long as one of these layers does not work properly, the topmost (UBIFS) > layer can not work properly, either. > If so, that's really wired. Since befor trying the ubifs, the same kernel was actually running jffs2 as rootfs without a sign that there is a i/o problem. Just because the performance concerns to jffs2, I decided to try ubifs. -- I can't go back to yesterday - because I was a different person then