From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Compressed iso9660 filesystem
Date: 4 May 2001 18:10:19 -0700 [thread overview]
Message-ID: <9cvjtr$jku$1@cesium.transmeta.com> (raw)
Okay, I think I now feel comfortable enough that I think I can unleash
this on the world...
I have made an extension to iso9660/RockRidge to allow for transparent
uncompression of block-compressed files. Because the files are
block-compressed, random access is fast; it uses a 32K blocksize which
gets pretty good compression ratios (I got 2:1 overall compression on
my SuperRescue CD; that includes a fair number of incompressible
files.)
The patches are available as:
ftp://ftp.kernel.org/pub/linux/kernel/people/hpa/filemap-2.4.4-1.diff.gz
ftp://ftp.kernel.org/pub/linux/kernel/people/hpa/zisofs-2.4.5-pre1-5.diff.gz
(Both are needed.)
Additionally, the user-space utilities (a program to compress and
uncompress file trees, and a patch to mkisofs to generate the new
RockRidge records for compressed files) are available at:
ftp://ftp.kernel.org/pub/linux/kernel/people/hpa/zisofs/
If you test this out, please let me know; I'd like to know if anyone
actually cares about this... also, I would like to gauge if I have
messed up stability anywhere.
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
reply other threads:[~2001-05-05 1:11 UTC|newest]
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