PDA

View Full Version : Should jigdo files be made available to ease iso download?



eriixblaike
04-27-2003, 05:36 PM
I'm on a DSL line here, so I don't have the fastest connection in the world, but I pay no extra charges by the meg for a month -- I only pay a constant charge to allocate a particular throughput. I was wondering if anyone would appreciate me putting jigdo files for knoppix (and the split files used to generate the jigdo). I have the .jigdo and .template files already and have split the knoppix image into 1MB chunks for them (since 1MB should be small enough for anyone to download in 1 session, I'm guessing nobody should need smaller chunks) and I can easily put them up for http download from my machine, which holds a constant dns address (through ddts.net) despite it's ip shifts. Good idea? Bad idea? Anyone? Fo those who don't know, jigdo is a download tool that grabs all the smaller files that comprise a larger file, and uses them to rebuild a bit-for-bit image of the original file. These smaller files usually make things somewhat less painful for the downloader and for the server (though Knoppix is in the special case where the large file is usually the smallest unit, so the later may not be the situation here) and it uses multiple levels of error correction as the file is downloaded and built -- to the point that if one segment fails, the rest should still be kept and only it should need be redownloaded.

BTW:
jigdo data here (http://home.in.tum.de/~atterer/jigdo/).

eriixblaike
04-27-2003, 07:11 PM
judging by the complete and utter lack of response here, I'd bet the unders, but if anyone actually wants to try it out, the jigdo files are available at my machine, so just run

jigdo-lite http://eriix.ddts.net/~eriix/jigdo/knoppix/knoppix.jigdo

jigdo will take it from there. Press enter at the prompt and wait while everything downlaods. If it's interrupted, it will recover gracefully when it is restarted. It should correct download corruption by redownloading only the corrupted part. The script also has a windows version on the homepage (linked to in the topic-starting post).

soapee01
05-14-2003, 10:01 PM
This is a great idea. I was wondering how to do this not to long ago since I've downloaded like 4 different isos in as many weeks. Jigdo (once you figure it out) is one of the best features of debian imho.

soap

Sigma
08-10-2003, 11:04 AM
I really think jigdo should be an alternative to the full iso download. I myself have an ADSL connection, and as said before, I have to re-download ISO's 4 times or so to get the MD5sum right. Jigdo's superb error correction minimalizes this problem. Put up Jigdo mirrors!