On Thursday 10 June 2004 01:35, Richard Atterer wrote: > On Wed, Jun 09, 2004 at 08:45:05PM +0300, George Danchev wrote: > > what advantages I'll get when using jigdo to update my old image instead > > of patching the old iso with rdiff. > > Well, Debian doesn't offer CD image upgrades in rdiff/xdelta format. > Generally, IMHO jigdo has the following advantages over binary diffs: > > - jigdo allows you to update to your image from /any/ previous version of > the same image. That's most useful with weekly snapshots - imagine having > to download and apply 6 "patches" because you last fetched a weekly > snapshot 6 weeks ago. > > - you can download all the changed/new packages from any Debian mirror, not > just designated "CD patch mirrors". With patches, IMHO many regular > Debian mirrors would not be too excited about mirroring large patch > files, so the few mirrors who offered them would be fairly busy. > > - related to the point above: Debian does not need to duplicate the data > for the changed/new packages on the servers in a binary diff, which saves > space. (jigdo can download these packages from the "normal archive" of > packages on a Debian server.) > > - jigdo allows completely different kinds of "updates", e.g. you can update > from a set of CD images to one DVD image, without downloading all the > package data again. > > - jigdo updates still work fine in case your old CD has read errors.
Thanks for pointing these out. Your explanation is more that sufficient. I would add one more advantage of jigdo over rdiff: - The new image might be piped instead of generated and stored on the server from debian-cd (or whatever) to jigdo-file to create the .jigdo/.template files. With rdiff one need to have the old and new image files to create the diff. I think this comparing information is very important to clear the things up for the users and must be added to the jigdo's site and docs. -- pub 4096R/0E4BD0AB 2003-03-18 <keyserver.bu.edu ; pgp.mit.edu> fingerprint 1AE7 7C66 0A26 5BFF DF22 5D55 1C57 0C89 0E4B D0AB -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
