Compressed iso9660 filesystem

From: H. Peter Anvin (hpa@zytor.com)
Date: Fri May 04 2001 - 21:10:19 EDT

  • Next message: David S. Miller: "[PATCH] (was Re: 2.4.4 & IPv6 oopses)"

    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
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