Date: Mon, 23 Oct 2006 20:09:43 +0700 From: Max Khon <fjoe@samodelkin.net> To: Oliver Fromme <olli@lurza.secnetix.de> Cc: freebsd-fs@FreeBSD.ORG Subject: Re: Hi: Porting Cramfs on FreeBSD Message-ID: <20061023130942.GA73780@samodelkin.net> In-Reply-To: <200609271744.k8RHipTS032655@lurza.secnetix.de> References: <451AA52F.2020408@centtech.com> <200609271744.k8RHipTS032655@lurza.secnetix.de>
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Hi! On Wed, Sep 27, 2006 at 07:44:51PM +0200, Oliver Fromme wrote: > > I'm currently working on a tarfs, that will do something similar to > > this, except it allows you to use a regular tar file as the file system > > image. > > That's cool. I'm looking forward to it. > > > I don't have compression working yet, but that is on the > > roadmap. [...] large file system sizes (based on available > > memory) > > Hm. Does that mean that the whole (uncompressed) FS image > will have to fit into memory? That would be a disadvantage > compared to cramfs. Cramfs doesn't compress the whole FS > as one object (like .tar.gz), but it compresses it page-by- > page, so every page can be uncompressed independently, and > memory usage is very low, which is good for small embedded > applications. cloop (geom_uzip) works exactly like this, but on the block device level. /fjoe
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