From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [202.108.35.176] (helo=vip.sina.com) by pentafluge.infradead.org with smtp (Exim 4.14 #3 (Red Hat Linux)) id 191Ka5-0004z3-FZ for ; Fri, 04 Apr 2003 07:21:41 +0100 Message-ID: <20030404062136.7806.qmail@vip.sina.com> From: To: linux-mtd@lists.infradead.org MIME-Version: 1.0 Date: Fri, 04 Apr 2003 14:21:36 +0800 Subject: [SPAM] FAT on NAND List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi, all: What I am doing now is to build a filesystem which can be recognized on _raw_ NAND flash. So, I think FAT will be the only choice(though I know it's very unstable). And I have following question now: 1.How unstable would it be? Does it support: a.journaling (crash/power-off safe ,I mean) b.bad block management c.wear levelling d.error correction e.something else I dont know to make the FS reliable 2.I have checked the NAND flash docoment (especially the "Filesystems supporting NAND"chapter) and I found out that it seems no way to build a FAT on a bare NAND flash but only on the SmartMediaCards, am I right? Or the SM card and the bare NAND are just the same thing when a FAT on it. 3.Maybe I misunderstood,but David Woodhouse had told me that I should apply layers like FAT->NFTL->NAND if I wanna build a FAT on a NAND flash.But I learned that the NFTL only support Doc from the NAND flash document, isnt it? And what should I do to support the FAT ? 4.Everybody tells me that the Fat on a NAND is not reliable,but I think USB mass storage are based on NAND and got a FAT (or some filesystem which windows can recognize) on it, so ,how comes it happen? BTW:Why my mail sent to the maillist always "awaits moderator approval"? TIA Jim Zeus ______________________________________ ===================================================================