FYI there is a proposal [1] for new meatadata format which should reduce the traffic. This will be used in DNF.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=850896 Honza ----- Original Message ----- > From: "Megh Parikh" <meghp...@gmail.com> > To: yum-devel@lists.baseurl.org > Sent: Tuesday, December 30, 2014 3:58:54 PM > Subject: Re: Question about yum metadata transfer > > Well I read in the YumFuture page that repo meta delta was a goal. > > I wish to contribute but first I need your review on what I have to say. > > So here are my two cents: > > -> Repos should create patches (there are xml patch tools listed below > for diff and patch are not so suitable for XML files) > -> Patches should be organized by timestamps. > -> The current state of metadata should be saved as an xml file which > is served to any new user. > -> An old user requests a list of patches from the server > -> Preferably certain amount of patches should be compressed as HTTP > requests take certain time. (Lets say 25. This maybe added to the > .repo file) > -> The list contains list of timestamps of patch files > - The first line of this list contains the timestamp of the > starting point (more on this later) > -> If this list has a timestamp newer than what the user has the user > downloads the patch files > - If the timestamp of the starting point is newer than the users > timestamp than the user has to redownload the repo metadata > - Yum would know the count of compressed files from the .repo file > and would request the gzipped file instead of each file if yum has to > download more than 25 files. Else It would individually download each > file. > -> If the amount of patch files exceeds a big amount, (eg 250) old > patch files should be deleted and the starting point updated > . - This means that 100 of the 250 patches would be deleted while > the rest deleted so that the list doesnot swell much in size nor does > a very old user have to download much. > > Tell me your ideas and as I am a newbie tell me if this can be > implemented as a plugin > > Regards, > Megh > > On Tue, Dec 30, 2014 at 7:44 PM, Megh Parikh <meghp...@gmail.com> wrote: > > Hello, > > > > I donot no much about the internals of yum but is repository metadata > > downloaded in whole everytime it gets autoupdated? > > > > Especially the updates and the Fedora repos take a long time to download > > and > > use about 30 MB of download. > > > > If not can it not be supplied as patches to existing xml data. (There are > > several xml diff utilities) > > > > (I donot know if this should have been posted in the yum list instead of > > yum-devel. If so pls redirect me) > > > > Regards, > > Megh Parikh > _______________________________________________ > Yum-devel mailing list > Yum-devel@lists.baseurl.org > http://lists.baseurl.org/mailman/listinfo/yum-devel > _______________________________________________ Yum-devel mailing list Yum-devel@lists.baseurl.org http://lists.baseurl.org/mailman/listinfo/yum-devel
