From Scott.Wagner@us.bosch.com Tue Mar 18 13:12:46 2008 Received: from smtp2-v.fe.bosch.de ([139.15.237.6]) by stoneboat.aleph1.co.uk with esmtp (Exim 4.63) (envelope-from ) id 1JbbcD-0008I3-Ud for yaffs@lists.aleph1.co.uk; Tue, 18 Mar 2008 13:12:45 +0000 Received: from vsmta2.fe.internet.bosch.com (unknown [10.4.98.30]) by imta8.fe.bosch.de (Postfix) with ESMTP id 6FE483C016 for ; Tue, 18 Mar 2008 14:12:20 +0100 (CET) Received: from mta2.sbd.internet.bosch.com (vsgw2.fe.internet.bosch.com [10.4.98.13]) by vsmta2.fe.internet.bosch.com (Postfix) with ESMTP id CDEE0800B0 for ; Tue, 18 Mar 2008 14:12:19 +0100 (CET) Received: from sbdimc01.us.bosch.com (sbdimc01.us.bosch.com [10.24.248.73]) by mta2.sbd.internet.bosch.com (Postfix) with ESMTP id D551DA0014 for ; Tue, 18 Mar 2008 09:12:18 -0400 (EDT) Received: from sbdmail14.us.bosch.com ([10.24.248.72]) by sbdimc01.us.bosch.com with Microsoft SMTPSVC(6.0.3790.3959); Tue, 18 Mar 2008 09:12:18 -0400 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Tue, 18 Mar 2008 09:12:17 -0400 Message-ID: <24F9B61D2FEAB94BBA5930904B9A79270793051B@sbdmail14.us.bosch.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Index: AciI+bBRZwdCixUDR8OPPdq/Y2LRjQ== From: "Wagner Scott (ST-IN/ENG1.1)" To: X-OriginalArrivalTime: 18 Mar 2008 13:12:18.0771 (UTC) FILETIME=[B1964A30:01C888F9] X-SA-Exim-Connect-IP: 139.15.237.6 X-SA-Exim-Mail-From: Scott.Wagner@us.bosch.com X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-3.7 required=5.0 tests=AWL, BAYES_00, MISSING_SUBJECT, RCVD_IN_DNSWL_MED 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] (no subject) 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: Tue, 18 Mar 2008 13:12:46 -0000 Hi all, I have been using YAFFS successfully with my Cirrus EP9302 / ST NAND512W3A /Linux 2.6.14 embedded system for about a year now. Nice work!!! I am writing to ask for recommendations / suggestions for safing the YAFFS, its underlying MTD, and the NAND Flash at power failure. To date I have not had any file system corruption attributable to power fail during write, but I would like to "make sure." I receive a Power Fail interrupt about 100 mS before my processor is reset. What, if any, steps can I take to safe YAFFS and flush pending writes when I receive the power fail interrupt? Thanks Scott Wagner