From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from down.free-electrons.com ([37.187.137.238] helo=mail.free-electrons.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1badcc-0008D3-N4 for linux-mtd@lists.infradead.org; Fri, 19 Aug 2016 06:49:43 +0000 Date: Fri, 19 Aug 2016 08:49:08 +0200 From: Boris Brezillon To: Dongsheng Yang Cc: linux-mtd@lists.infradead.org, dmitry.torokhov@gmail.com, Dongsheng Yang , shengyong1@huawei.com, starvik@axis.com, richard , linux-cris-kernel@axis.com, Colin King , jschultz@xes-inc.com, Ard Biesheuvel , David Woodhouse , asierra@xes-inc.com, jesper.nilsson@axis.com, fabf@skynet.be, dooooongsheng.yang@gmail.com, Brian Norris , mtownsend1973@gmail.com Subject: Re: MTD RAID Message-ID: <20160819084908.4955c629@bbrezillon> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Dongsheng, On Fri, 19 Aug 2016 14:34:54 +0800 Dongsheng Yang wrote: > Hi guys, > This is a email about MTD RAID. > > *Code:* > kernel: > https://github.com/yangdongsheng/linux/tree/mtd_raid_v2-for-4.7 Just had a quick look at the code, and I see at least one major problem in your RAID-1 implementation: you're ignoring the fact that NAND blocks can be or become bad. What's the plan for that? Regards, Boris