On Mon, Oct 1, 2012 at 5:48 AM, Nguyen Thai Ngoc Duy <pclo...@gmail.com> wrote: > Probably off topic. Does saving a list of missing bases in the pack > index help storing thin packs directly? I may be missing some points > because I don't see why thin packs cannot be stored on disk in the > first place.
Packs are supposed to be completely self contained. We require all delta bases to be in the pack so that we can always recover the objects stored within it, even if there is no other pack available. This simplifies things like git gc such that they don't need to worry about retaining delta bases for other packs, or avoiding delta chain cycles between packs. I have managed to create a A->B->A delta chain once that made the repository corrupt as soon as the last non-delta copy of A as removed. Both A and B became unreadable as A needed B which needed A which needed B... :-( To keep things simple and easily verified as correct, we don't allow this. -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html