On Saturday 13 January 2007 12:40 pm, Ahmed Kamal wrote: > FYI, this yum deltarpm support, is based on that same deltarpm package that > is made by suse. This suse package can create new rpms from drpm + (either > ondisk files, or old rpm). Either way, a new rpm is created, then > installed. Never does it replace files directly. Not sure why this would be > bad security wise I personally don't like the idea of binary delta's there are too many variables with them and too much overhead. for instance say we update cups 4 times during the life of a release. that means we need to create 4 delta's as the end user can have 4 possible states of the package. Windows has always done delta's and for the longest time they only provided delta's from the latest version. which is the reason you had to update a ton of times to get to the latest version. that has changed but its not http://www.directionsonmicrosoft.com/sample/DOMIS/update/2005/02feb/0205fsuttc.htm Apple also provides delta's but they do only deltas from the previous version to latest if you you have an older version you have to get the full version. most packages are so small that i don't think the overhead is worth the pain. OOo and a couple of others i could see maybe, but otherwise I personally don't think its a good idea. It means mirrors need to carry more data. -- Dennis Gilmore, RHCE Proud Australian
