Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755729AbXFLAfq (ORCPT ); Mon, 11 Jun 2007 20:35:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757359AbXFLAfg (ORCPT ); Mon, 11 Jun 2007 20:35:36 -0400 Received: from py-out-1112.google.com ([64.233.166.181]:40625 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757341AbXFLAff convert rfc822-to-8bit (ORCPT ); Mon, 11 Jun 2007 20:35:35 -0400 Message-ID: <11f674920706111735l7dec2136t32d40ee2ab4ccca4@mail.gmail.com> Date: Mon, 11 Jun 2007 17:35:34 -0700 From: "Kevin Bowling" To: "Kevin K" Subject: Re: ext2 on flash memory Cc: DervishD , Linux-kernel In-Reply-To: <191337B7-F4CC-4824-B669-48AE194BE141@sbcglobal.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8BIT Content-Disposition: inline References: <20070611101319.GA14284@DervishD> <191337B7-F4CC-4824-B669-48AE194BE141@sbcglobal.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1635 Lines: 41 On 6/11/07, Kevin K wrote: > > On Jun 11, 2007, at 5:13 AM, DervishD wrote: > > > Hi all :) > > > > I was wondering: is there any reason not to use ext2 on an USB > > pendrive? Really my question is not only about USB pendrives, but any > > device whose storage is flash based. Let's assume that the device > > has a > > good quality flash memory with wear leveling and the like... > > > > Thanks a lot in advance :) > > > > Ra?l N??ez de Arenas Coronado > > > > > My opinion is that, unless the flash is really cheap, or it is being > written to excessively, that it probably doesn't matter too much. > With the growth in size of flash, just how long do you think it will > continue to be used before you go to something larger? > > A 256MB flash of a few years ago has been supplanted in many cases by > today's 2-4gb memory. > > One suggestion with ext2 might be to mount it with the noatime > option, so it doesn't update the last access time for directories and > files. Otherwise, you are doing a write even when you only plan to > read a file. All of the posts fail to address the question here: what is the correct file system, or does one exist yet, for wear leveling flash storage. JFFS2 and logfs are nice for MTD, but for better flash memories that are likely to be used in the future like solid state hard disks, what is the answer? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/