Les Mikesell <lesmikesell at gmail.com> wrote: > I've never said I wanted deltas. Okay, let's scratch RPM deltas then. That was someone else. But you _still_ need at least a "delta" on the meta-data. Whether you delta the meta-data files, or you keep multiple copies, you _must_ do so. YUM repositories do _not_ keep a running journal of changes in their meta-data. And YUM clients _only_ access that meta-data. YUM clients do _not_ inspect the RPM tree for resolution, only the meta-data. My "conceptual hack" is a way to maintain multiple copies of the repo's meta-data, so you can look up older versions of the repository. It's not as good as a delta of the repository, and you "can't regenerate an old repository," but it does let you reference previous meta-data sets that were previously generated. Which does most of what you want. You want to be able to pass a date that worked on another system, to any subsequent system. So you can access the repository's meta-data from that time by passing date. But, _again_, that requires the maintainance of _multiple_ sets of the repo meta-data. The repo meta-data, which is what the YUM client uses, does _not_ contain a history -- only the current set of files, and there is no "date" information (nor can there be without deltas). > I've said I wanted yum to not consider additions to a > repository past a certain timestamp so it will make the > same update decision it did a week or so ago even if the > repostitory has additions. And I said that is _impossible_! The YUM client _never_ accesses date information during resolution. The YUM repository is a "static web site" and cannot provide that information. The YUM repository contains meta-data matched the _discrete_date_ that "createrepo" or whatever tool that created the meta-data list. And that's what the YUM client accesses. To add in date information and all the meta-data associated would massively bloat the meta-data files. Which is why I suggested that conceptual hack, to serve up the meta-data from specific times in the past. Do you understand this now? -- Bryan J. Smith | Sent from Yahoo Mail mailto:b.j.smith at ieee.org | (please excuse any http://thebs413.blogspot.com/ | missing headers)