Re: Is delta between different branchs broken on Ostree or I am doing something wrong?

[Leandro Santiago <leandrosansilva gmail com>]

Well, I'm somehow resurrecting a dead thread, but as I still have this
issue, I decided to implement some "proof of concept" so someone else
can evaluate it makes sense or not. Pull request on:
https://github.com/GNOME/ostree/pull/151

On 16 June 2015 at 09:00, Leandro Santiago <leandrosansilva gmail com> wrote:
> Yes, now you you said it, I am really using branches as tags, but I
> hadn't realized that. I really would like to use Version metatag for
> versioning my system, but I can't due the fact every build is built
> independently, without knowledge from previous builds. That's why I
> pull-local each of them to the main repository and then create the
> deltas manually otherwise I would corrupt the repository if I used the
> same branch (please correct me if I am wrong :-)).
>
> Lokking externally, I'd say the delta creation between two revs from
> different branches (I tested using both the branches names and their
> rev-parse as arguments to --to= and --from= and the result were the
> same) is working, so why add not something, on ostree pull, like:
> $ ostree pull repo:my_new_branch_<or_revision>
> --delta-from=my_current_branch_<or_revision>
>
> And it would first check from a delta from
> my_current_branch_<or_revision> to my_new_branch_<or_revision>,
> falling back to the default behaviour otherwise.
>
> As the delta does exist on the repo, I see no reason for not
> downloading and applying it. But it's based on my own needs and I
> probably is not useful for other use cases. But thank you for letting
> me know the delta status and that it's been currently worked :-)
>
> On 16 June 2015 at 04:34, Colin Walters <walters verbum org> wrote:
> > On Fri, Jun 12, 2015, at 11:34 AM, Leandro Santiago wrote:
> > > I realized that when changing from one branch to another one, even
> > > when I create the delta between them, the client does not find the
> > > delta file, downloading so a lot of other files. Looking at the http
> > > accesses, I guess there might be something wrong with it.
> >
> > Yeah, the client logic is currently hardcoded to only look for
> > deltas between revisions on a single branch.
> >
> > https://git.gnome.org/browse/ostree/tree/src/libostree/ostree-repo-pull.c#n2115
> >
> > It looks like you're using branches more like tags.  We would like to support
> > tags but it's not implemented now.
> >
> > Currently what you can do is assign a "version" metadata to commits in
> > a single branch.  The client doesn't currently know how to fetch based on that
> > metadata - though, we could put it in the summary file.
> >
> > Deltas are still in progress, though we hope to have things finalized soon
> > by landing GPG signing of the summary file.
> >
> > _______________________________________________
> > ostree-list mailing list
> > ostree-list gnome org
> > https://mail.gnome.org/mailman/listinfo/ostree-list
>
>
>
> --
> Sent from my mind



-- 
Sent from my mind