linux-kernel - Re: ext2 on flash memory

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Message-Id: <200706130849.37662.juergen127@kreuzholzen.de>
Date:	Wed, 13 Jun 2007 08:49:36 +0200
From:	Juergen Beisert <juergen127@...uzholzen.de>
To:	linux-kernel@...r.kernel.org
Cc:	Jason Lunz <lunz@...ooley.org>, DervishD <lkml@...vishd.net>
Subject: Re: ext2 on flash memory

On Tuesday 12 June 2007 23:09, Jason Lunz wrote:
> In gmane.linux.kernel, you wrote:
> >     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...
>
> Have a look at the UBI layer. It adds wear-levelling to MTD devices.  Of
> course, to use it on a regular blockdev like this you'll have to do
> something like usb-storage (sd) -> block2mtd -> ubi -> jffs2. But it can
> be done afaik.

Then you will do some kind of wear leveling (jffs2) over wear leveling 
(pendrive). Does this makes sense?

Juergen
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