linux-kernel - Re: New fast(?)-boot results on ARM

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Message-ID: <20090814185852.GO13320@pengutronix.de>
Date:	Fri, 14 Aug 2009 20:58:52 +0200
From:	Robert Schwebel <r.schwebel@...gutronix.de>
To:	Jamie Lokier <jamie@...reable.org>
Cc:	Zan Lynx <zlynx@....org>, linux-kernel@...r.kernel.org,
	linux-embedded@...r.kernel.org,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Tim Bird <tim.bird@...sony.com>, kernel@...gutronix.de
Subject: Re: New fast(?)-boot results on ARM

On Fri, Aug 14, 2009 at 07:46:51PM +0100, Jamie Lokier wrote:
> Zan Lynx wrote:
> > Or maybe its cheap and slow flash. In that case I think your only
> > hope is to make all the code as small as possible and/or find a
> > different flash filesystem that does not have to read so much of the
> > device to mount. Perhaps use a read-only compressed filesystem for
> > the system binaries and reflash it for software upgrades. Only init
> > and mount the writable flash for user-storable data well after
> > system boot has finished.
>
> Fwiw, logfs claims to mount quickly, but I haven't heard much about it
> in recent months and http://logfs.org/logfs/ implies it's not really
> stable yet. But maybe if you're working on a prototype that doesn't
> matter so much.

Is logfs ready for production in the meantime? Last time I checked it
was still more or less Jörn's pet project and ubifs seemed much more
mature.

rsc
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