On Fr, 2014-10-17 at 11:49 +0000, Andre Robatino wrote: > Roberto Ragusa <mail <at> robertoragusa.it> writes: > > > Are compressed rpms completely impossible to diff efficiently by rsync? > > In a word, yes. They're already compressed, so it's unlikely there would be > any matching blocks between old and new rpms for rsync to take advantage of.
Years ago I saw rsync being patched for this (done by suse IIRC). Basic trick is to teach rsync to unpack/repack rpms, thereby effectively rsyning the files within the rpm, which works *alot* better than using the compressed rpm payload. Obvious downside is that it is very cpu consuming, which likely is a showstopper at least for public mirrors (and I guess it never went upstream for that reason). cheers, Gerd -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
