I know of a few techniques for minimizing server bandwidth when bittorent is not an option. 1) If you have the beta isos, you can rename them as centos 5 isos and then rsync from a mirror that allows rsync (such as kernel.org). Then only changes from beta to centos 5 plus some overhead is downloaded. I suppose you could use this technique with bittorrent too. 2) Instead of downloading both cd and dvd isos, just download the cd isos and use a script to create the dvd iso. You can rsync like step 1 if the dvd md5sum differs. A cd to dvd script is at url below (although I haven't tried it yet). http://www.tuxforums.org/forum/viewtopic.php?t=446
On 4/12/07, Dale Sykora <Dale.Sykora at 7core.biz> wrote:> A cd to dvd script is at url below (although I haven't tried it yet). > http://www.tuxforums.org/forum/viewtopic.php?t=446The script does not take care of repodata. After all files have been combined, the repodata direcory needs to be recompiled. This can be done by inserting this line: /usr/bin/createrepo -g repodata/comps.xml ./ just after the line cd $DVD and before the line mkisofs. Akemi
Dale Sykora wrote:> I know of a few techniques for minimizing server bandwidth when > bittorent is not an option. > > 1) If you have the beta isos, you can rename them as centos 5 isos and > then rsync from a mirror that allows rsync (such as kernel.org). Then > only changes from beta to centos 5 plus some overhead is downloaded. I > suppose you could use this technique with bittorrent too. >if one file near the beginning of the ISO changes size by even a block, then the whole rest of the ISO will be different, this will gain you nothing.