From: Ralf Baechle <ralf@linux-mips.org>
To: zhuzhenhua <zzh.hust@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Subject: Re: how to choose journal filesystem for embedded linux?
Date: Wed, 24 Jan 2007 14:02:52 +0000 [thread overview]
Message-ID: <20070124140252.GA14574@linux-mips.org> (raw)
In-Reply-To: <50c9a2250701231805y62ec67f0v83d2fcf3ae2c55da@mail.gmail.com>
On Wed, Jan 24, 2007 at 10:05:10AM +0800, zhuzhenhua wrote:
> i now work on a mips board, and want to store my system code
> on NAND Flash.
> our Flash driver can handle the Flash features(bad block, phy to
> logic addr, spare,etc.),
> so i just want to select a journal filesystem to handle sudden poweroff.
> Our system code(writeable) is about 10M~50M. i am not sure what
> journal filesystem will be suitable, ext3,xfs,jfs,or reiserFS?
> i have try ext3, it runs well, but seems to waste too much space
> while mkfs.ext3.
Classic journaling filesystems are not suitable for flash as they tend to
have write hot spots so will wear out certain parts of the flash fairly
quickly. Don't forget atime updates, even those do matter! Of course if
your filesystem is read-only these constraints matter much less.
Ralf
prev parent reply other threads:[~2007-01-24 14:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-24 2:05 how to choose journal filesystem for embedded linux? zhuzhenhua
2007-01-24 4:27 ` Maarten Lankhorst
2007-01-24 5:04 ` zhuzhenhua
2007-01-24 14:45 ` Ladislav Michl
2007-01-27 5:04 ` zhuzhenhua
2007-01-24 14:02 ` Ralf Baechle [this message]
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