Date: Wed, 19 Nov 2003 11:22:59 -0500 (EST) From: Robert Watson <rwatson@freebsd.org> To: Sergei Mozhaisky <technix@ukr.net> Cc: freebsd-fs@freebsd.org Subject: Re: Compressed filesystem for FreeBSD Message-ID: <Pine.NEB.3.96L.1031119112108.8405F-100000@fledge.watson.org> In-Reply-To: <E1AMPxQ-000EwV-00@storage.ukr.net>
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On Wed, 19 Nov 2003, Sergei Mozhaisky wrote: > Hello everyone. > > I am searching for compressed filesystem for FreeBSD. > > Why do I need compressed filesystem? I am developer of FreeBSD-based > LiveCD, and the main problem of liveCD is loading speed - it's too slow, > comparing with Knoppix or other Linux LiveCD. Usage of compressed > filesystem will improve software loading speed and allow to put more > software to CD. > > I found info about project "FiST" in freebsd-fs archives, this is almost > what I need: > ftp://ftp.filesystems.org/pub/fist/fistgen-0.0.7.tar.gz But gzipfs > module does not compile in FreeBSD (developers said that size-changing > algoritm they used currently works only in Linux) So the question is > simple: is there any implementations of compressed filesystems for > FreeBSD (even as unofficial projects)? This will help a lot in such > projects as FreeBSD-based LiveCD. If your file system is read-only, I wonder if the easier path wouldn't be to implement a compression layer for GEOM. That would keep you out of the business of alternative for stacked file systems, which is a painful business to be in :-). You could use regular UFS or cd9660, and then compress the resulting image using a custom (or off-the-shelf) tool. The trick will be to have random access to the compressed data... Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Network Associates Laboratories
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