Date: Sat, 19 Jul 2003 13:49:38 +0200 From: Benjamin Walkenhorst <krylon@gmx.net> To: FreeBSD-questions@FreeBSD.org Subject: ISO9660/RockRidge transparent de-/compression Message-ID: <20030719114942.2401A43F85@mx1.FreeBSD.org>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everybody, Linux comes with a nice feature - well, actually it's only of limited use, but for certain situations it's *very* useful: Before creating an iso9660-image, you can compress the file tree; you then create the iso-image in the ordinary way and write it to cd/cd-rw. When you read the cd, newer versions of Linux (2.4.16+, I think) can transparently decompress the files on the cd; you get to see the files normally, they just take less space on the cd. (For files that already are compressed, like .tar.[bz2|gz] or mp3 audio, jpg images and so on, this rarely works, of course, but it's great for plain text, like html, source code, scripts, ...) The reason this is useful to me is this: I regularly write backups on cd-rw; my cd-rw-writer can rewrite only at 2x-speed. Which really sucks if you have to store several hundred megabytes of data. ;-/ Using transparent de-/compression can save me some space on the rw and thus some time. Unfortunately, the documentation of cdrtools-2.00 and zisofs-tools-1.0.4 says, currently only Linux is capable of transparently reading such cds. Does anyone know if this will become a feature of FreeBSD one day? I would really appreciate that... =) Kind regards, Benjamin Walkenhorst - -- "Der Hoffnung beraubt sein, heißt noch nicht - verzweifeln." (Albert Camus) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) Comment: Public Key available at http://www.krylon.de iD8DBQE/GTBYoYumWdMvhMQRArbRAJ9wJNlpz4GlKfd+0fWOLRXzTpGKpwCfWBxK 9h+PlpTd1/TpOCKSPeduZy0= =tkS2 -----END PGP SIGNATURE-----
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