From: Matthias Kaehlcke <matthias@kaehlcke.net>
To: Johnny Hung <johnny.hacking@gmail.com>
Cc: linux-embedded@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-mtd@lists.infradead.org,
kernelnewbies <kernelnewbies@nl.linux.org>
Subject: Re: mount ramdisk rootfs /etc directory to jffs2 filesystem.
Date: Tue, 19 Jan 2010 10:50:24 +0100 [thread overview]
Message-ID: <20100119095024.GD16182@darwin> (raw)
In-Reply-To: <cb9ecdfa1001190120r593f7799sf566df5a855b8a54@mail.gmail.com>
El Tue, Jan 19, 2010 at 05:20:53PM +0800 Johnny Hung ha dit:
> I have build an embedded Linux system and rootfs is a ramdisk. Ramdisk
> rootfs resides in memory so modify files is non-effective after a
> reboot. Some directories in rootfs, like /etc, /usr, ... are contain
> many application configuration files and I want to mount it to jffs2
> flash filesysyem so it will take effect after a reboot. Is it
> possible?
yes, this is possible
> I know the flash has write times limited so the log files
> (syslogd/klogd) should not store in flash. In general, how to deploy
> root file system for embedded linux with flash storage?
- add jffs2 support to your kernel
- create your image using mkfs.jffs2 from mtd-utils
- flash the image
- specify the rootfs partition and type in the bootargs of the kernel
for further information i recommend the lecture of
http://free-electrons.com/doc/flash-filesystems.pdf
depending on your requirements/size of the rootfs partitions UBIFS
might be an option to consider
--
Matthias Kaehlcke
Embedded Linux Developer
Barcelona
El trabajo es el refugio de los que no tienen nada que hacer
(Oscar Wilde)
.''`.
using free software / Debian GNU/Linux | http://debian.org : :' :
`. `'`
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next prev parent reply other threads:[~2010-01-19 9:50 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-19 9:20 mount ramdisk rootfs /etc directory to jffs2 filesystem Johnny Hung
2010-01-19 9:50 ` Matthias Kaehlcke [this message]
2010-01-19 10:13 ` Johnny Hung
2010-01-19 10:20 ` Matthias Kaehlcke
2010-01-19 12:03 ` Johnny Hung
2010-01-19 13:17 ` Ricard Wanderlof
2010-01-19 14:06 ` Matthias Kaehlcke
2010-01-20 2:32 ` Johnny Hung
2010-01-20 7:12 ` Matthias Kaehlcke
2010-01-20 7:15 ` Ricard Wanderlof
2010-01-20 7:17 ` Matthias Kaehlcke
2010-01-22 3:01 ` Johnny Hung
2010-01-20 7:57 ` Marco Stornelli
2010-01-20 10:21 ` Matthias Kaehlcke
2010-01-20 11:54 ` Marco Stornelli
2010-01-22 3:07 ` Johnny Hung
2010-01-22 8:14 ` Marco Stornelli
2010-01-25 4:09 ` Johnny Hung
2010-01-25 8:27 ` Chris Simmonds
2010-01-25 8:43 ` Johnny Hung
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