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

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>

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.

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.

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