Re: Regarding "git log" on "git series" metadata

[Josh Triplett <josh@joshtriplett.org>]

On Sat, Nov 05, 2016 at 09:21:58PM +0100, Christian Couder wrote:
> On Sat, Nov 5, 2016 at 4:18 PM, Josh Triplett <josh@joshtriplett.org> wrote:
> > On Sat, Nov 05, 2016 at 01:45:27PM +0100, Christian Couder wrote:
> >> And with what Peff says above it looks like we will need ways
> >> configure and tweak commit reachability with gitlink/gitref anyway. So
> >> the point of gitref compared to gitlink would be that they just have a
> >> different reachability by default. But couldn't that be replaced by a
> >> default rule saying that when a gitlink is reached "this way or that
> >> way" then the commit reachability should be enforced, and otherwise it
> >> should not be?
> >
> > Any version of git unaware of that rule, though, would consider objects
> > only reachable by gitlink as unreachable and delete them, causing data
> > loss.  Likewise for a server not aware of that rule.  And a server
> > unaware of that rule would not supply those objects to a client pulling
> > such a branch.
> 
> Yeah, so you would really need an up-to-date server and client to
> store the git-series data.
> But anyway if we create a gitref object, you would also need
> up-to-date servers and clients to make it work.

Agreed, but gitrefs have the advantage of failing safe, rather than
failing with dataloss.

- Josh Triplett