From glfy-yaffs@m.gmane.org Wed May 21 08:08:00 2008 Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by stoneboat.aleph1.co.uk with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1JyiQN-0003mG-OW for yaffs@stoneboat.aleph1.co.uk; Wed, 21 May 2008 08:08:00 +0100 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1JyiQL-0000ox-5i for yaffs@stoneboat.aleph1.co.uk; Wed, 21 May 2008 07:07:45 +0000 Received: from shmi.ifi.uio.no ([129.240.64.198]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 21 May 2008 07:07:45 +0000 Received: from hgb by shmi.ifi.uio.no with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 21 May 2008 07:07:45 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: yaffs@stoneboat.aleph1.co.uk From: Henrik Grindal Bakken Date: Wed, 21 May 2008 09:07:35 +0200 Organization: Sierra Fan Club Lines: 27 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: shmi.ifi.uio.no User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) Cancel-Lock: sha1:o1NKIc/yDwQ+Ygj7ZGZPxeP8n/E= Sender: news X-SA-Exim-Connect-IP: 80.91.229.2 X-SA-Exim-Mail-From: glfy-yaffs@m.gmane.org X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-3.2 required=5.0 tests=AWL,BAYES_00, RCVD_IN_DNSWL_LOW,SPF_HELO_PASS,SPF_PASS 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: Re: [Yaffs] loopback , power-off, and data is lost 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: Wed, 21 May 2008 07:08:00 -0000 Henrik Grindal Bakken writes: > Matthieu CASTET writes: > >> After adding OS trace to yaffs2, I saw that sync does a call to >> yaffs_sync_fs, but it is a nop. >> >> This mean sync syscall doesn't flush the yaffs2 cache and data it >> lost on unclean umount. >> >> Calling yaffs_FlushEntireDeviceCache in yaffs_sync_fs seems to make >> sync working. What do you think of that ? > > I suffer from the same problem. If a yaffs2 filesystem is merely > remounted read-only, and never properly unmounted, I seem to lose > data. This only (I think, at least primarily) happens on > filesystems that are loopback mounted from files in the yaffs2 > filesystem. I'd love to see a fix for sync. Has anyone been able to look at this problem and the proposed fix from Matthieu? -- Henrik Grindal Bakken PGP ID: 8D436E52 Fingerprint: 131D 9590 F0CF 47EF 7963 02AF 9236 D25A 8D43 6E52