From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ey-out-1920.google.com (ey-out-1920.google.com [74.125.78.144]) by ozlabs.org (Postfix) with ESMTP id 99038B7CEF for ; Wed, 20 Jan 2010 18:57:47 +1100 (EST) Received: by ey-out-1920.google.com with SMTP id 26so1007970eyw.38 for ; Tue, 19 Jan 2010 23:57:44 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: <20100119095024.GD16182@darwin> <20100119102026.GF16182@darwin> <20100119140600.GH16182@darwin> Date: Wed, 20 Jan 2010 08:57:44 +0100 Message-ID: <2ea1731b1001192357r72d627e2gb36d71f23fd69b2e@mail.gmail.com> Subject: Re: mount ramdisk rootfs /etc directory to jffs2 filesystem. From: Marco Stornelli To: Johnny Hung Content-Type: text/plain; charset=ISO-8859-1 Cc: Ricard Wanderlof , "linux-embedded@vger.kernel.org" , kernelnewbies , "linux-mtd@lists.infradead.org" , Matthias Kaehlcke , "linuxppc-dev@lists.ozlabs.org" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 2010/1/20 Johnny Hung : > 2010/1/19 Matthias Kaehlcke : >> El Tue, Jan 19, 2010 at 02:17:22PM +0100 Ricard Wanderlof ha dit: >> > I consider to use ramdisk as rootfs because worry about wrong > operation in rootfs (is use jffs2 rootfs) and it will cause system > boot up failed. > Another query, does the syslogd/klogd log files also store in jffs2 > rootfs? Write to jffs2 frequently will reduce flash life cycle. > > BRs, H. Johnny >> >> -- In general a good splitting for rootfs could be: squashfs for rootfs, tmpfs for volatile data (/tmp), ubifs (with a flash partition) for "strong" permanent data (/etc, ....) and pramfs for "light" permanent data (/var/log, .....). I think you should "split" your rootfs. Ramdisk is an old approach with some drawbacks. Marco