On Mon, 2021-08-23 at 00:05 -0400, Taylor Blau wrote: > > We're going to run into problems much earlier than that, though: the > MIDX needs to load information about objects from packs in order to > break ties when multiple copies of the same object exist in multiple > packs (according to that pack's mtime). Huh, I guess I never ran into a need - we make sure in bup that each object only exists once, that's kind of the point :) I guess we could break ties by "lower hash of the pack" instead of "mtime"? It doesn't really matter how they're broken, as long as it's consistent? Arguably, mtime is not a good measure anyway, since the same repo elsewhere would have different mtimes. > So I'm not sure how we would even write a MIDX without physical packs on > disk that we can open and stat, let along how we would teach Git to > handle a situation where packs that did exist when writing a MIDX went > away when we tried to read from the same MIDX later on. It handles that just fine on the read side. johannes
