From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pd9e41948.dip.t-dialin.net ([217.228.25.72] helo=thomas.tec.autronix.de) by pentafluge.infradead.org with esmtp (Exim 3.22 #1 (Red Hat Linux)) id 16axZH-0002aw-00 for ; Wed, 13 Feb 2002 11:27:19 +0000 Content-Type: text/plain; charset="iso-8859-1" From: Thomas Gleixner Reply-To: gleixner@autronix.de To: David Woodhouse Subject: Re: NAND flash and JFFS(2) Date: Wed, 13 Feb 2002 12:40:52 +0100 References: <0202121847440K.00764@thomas> In-Reply-To: <0202121847440K.00764@thomas> MIME-Version: 1.0 Message-Id: <0202131200230Q.00764@thomas> Content-Transfer-Encoding: 8bit Cc: linux-mtd@lists.infradead.org, Sender: linux-mtd-admin@lists.infradead.org Errors-To: linux-mtd-admin@lists.infradead.org List-Help: List-Post: List-Subscribe: , List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: On Tuesday, 12. February 2002 18:47, Thomas Gleixner wrote: > > Actual state of JFFS2 on NAND > > I will run some more tests tonight. Excellent test result. Test is as follows: SmartMediaCard: 16MB two partitions a 8MB 1st partition is root 2nd partition is data data contains 20 files, which are not touched. 3 tasks running in loops task 1: copy 40 files from root to data, remove the files on root diff against original files on nfs copy 40 files from data to root, remove the files on data diff against original files on nfs task 2: open file A on data for write every 1 sec. append 1000 bytes and close the file loop until filesize is >1MB open file B on data for write every 1 sec. append 1000 bytes and close the file loop until filesize is >1MB task3: wait until A is >1MB copy file A to nfs check file integrity of A remove file A on data wait until B is >1MB copy file B to nfs check file integrity of B remove file B on data A independent control removes power after ~ 1-2 hours without warning. After reboot: The untouched 20 files on data are diffed against the original files on nfs The 40 files, which are shuffeld between root and data are diffed against original files on nfs. task1 starts task2 takes the file, which was filled at last and starts task3 starts The test ran for 8 hours without any problem. Thomas __________________________________________________ Thomas Gleixner, autronix automation GmbH auf dem berg 3, d-88690 uhldingen-muehlhofen fon: +49 7556 919891 , fax: +49 7556 919886 mail: gleixner@autronix.de, http://www.autronix.de