Re: git pack/unpack over bittorrent - works!

> Assume you are looking to update abranch B built on top of some
> say arm-specific branch A based on top of the main-line kernel L.
> 
> There you have 6 types of peers:
> 
> 1) those that have the current branch B
> 2) those that have an older state of B
> 3) those that have the current branch A
> 4) those that have an older state of A
> 5) those that have the current branch L
> 6) those that have an older state of L.
> 
> Assuming you want a quite obscure branch, type 1 and 2 peers will not
> be that many, so would be nice if there was some way to also get stuff
> from the others.
> 
> Peers of type 6 do not interest you, as there will be enough of type 5.
> 
> But already peers of type 3 might not be much and even less of type 1
> so types 2 and 4 get interesting.
> 
> If you get first a tree of all commit-ids you still miss (you only
> need that information once and every peer of type 1 can give it to you)
> and have somehow a way to look at the heads of each peer, it should be
> streight forward to split the needed objects using your way (not specifying
> the head you have but the one you hope to get from others), they should be
> able to send you a partial pack in the way you describe.