From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754927AbZCJLYk (ORCPT ); Tue, 10 Mar 2009 07:24:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755401AbZCJLYO (ORCPT ); Tue, 10 Mar 2009 07:24:14 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:60183 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755397AbZCJLYN (ORCPT ); Tue, 10 Mar 2009 07:24:13 -0400 Date: Tue, 10 Mar 2009 12:23:55 +0100 From: Pavel Machek To: Thanasis Cc: LKML Subject: Re: jffs2 and kernel config for SDHC Memory Cards Message-ID: <20090310112355.GF1337@ucw.cz> References: <49B127AB.6070202@asyr.hopto.org> <49B12B71.7030300@asyr.hopto.org> <20090306182425.GB28349@silver.sucs.org> <49B18679.4030504@asyr.hopto.org> <20090306225746.GB25593@silver.sucs.org> <49B2A7F0.1090101@asyr.hopto.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49B2A7F0.1090101@asyr.hopto.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat 2009-03-07 18:59:28, Thanasis wrote: > on 03/07/2009 12:57 AM Sitsofe Wheeler wrote the following: > > On Fri, Mar 06, 2009 at 10:24:25PM +0200, Thanasis wrote: > >> on 03/06/2009 08:24 PM Sitsofe Wheeler wrote the following: > >>> On Fri, Mar 06, 2009 at 03:56:01PM +0200, Thanasis wrote: > >>>> on 03/06/2009 03:39 PM Thanasis wrote the following: > >>>>> I want to use two of these Transcend?s Class 6 SDHC (SD High-Capacity) > >>>>> Memory Cards, > >>>>> http://www.transcendusa.com/Products/ModDetail.asp?ModNo=147&LangNo=0&Func1No=1&Func2No=13 > >>>>> as part of the filesystem in a netbook (Acer A110L), will mount /home on > >>>>> one, and /tmp and /var on the other. > >>> > >>>> Let me rephrase my questions in order to be clearer: > >>>> Q1: In order to achieve wear leveling should I format them as jffs2? > >>> This probably won't be very effective as you are already past the > > > >> OK. I believe I should stick to ext2, right? > > > > If you mean compared to jffs2 then probably yes, better to stick with > > ext2. > Right, that is what I meant. > > If you mean is ext2 the best choice over anything else... well > > that's an open question (or so I'm told). You would need to ask a > > filesystem expert really but it apparently depends on the workload, the > > characteristics of the "disks" and whether you need journaling. > It is going to be a desktop (netbook) system, so, if it had a HDD, I > would opt for ext4 or xfs, but given the hardware (SDHC), I guess ext2 > is the best choice. Well, maybe ext2 is _best_ choice, but it is not good one. It will loose data on sudden powerdowns... See (english) http://www.livejournal.com/~pavelmachek entry 'evil little cards'.