Mark de Wever <[email protected]>:
> From reading the GitHub website it looks like per repo.
That's what I would expect.
> Note when we want to split the repo to reduce its size it also means we
> have to historically remove those commits. It seems to be possible with
> git filter-branch as said by GitHub, but I'm what reluctant to start to
> modify the history.
Don't worry about this part; reposurgeon has good primitives - more
powerful and easier to use than filter-branch - for splitting repositories
by subtree and branch.
No commits will get removed per se, rather each one will be assigned
to exactly one of the offspring repositories. Well, unless we run
into a mixed-branch commit - those will get duplicated and one copy
will go to each git branch, possibly ending up in different offspring
repos.
reposurgeon was specifically designed for situations like this; the
expunge and divide primitives have been repeatedly tested on
repositories with a more complicated branch structure than Wesnoth's.
That part should go without a glitch - the issue won't be whether we
can partition cleanly but how exactly we want to do it.
There are SVN repository malformations that can confuse reposurgeon.
The worst is a branch delete followed by a branch rename recreating
the deleted branch. Also, various kinds of CVS scar tissue can cause
problems. But I'm pretty sure that the Wesnoth repo doesn't contain
any of this stuff. It might have an accidental mixed-branch commit
or two, but reposurgeon takes those in stride.
The only issue I really expect with this conversion is one of sheer
size - I'm not sure my disk is large enough to hold all of (a) a
mirror of the Subversion repo, (b) the on-disk intermediate state that
reposurgeon keeps when it edits, and (c) the offspring git repos. I
have just implemented bzip2 blob compression in reposurgeon as a way
to substantially reduce the size of (b).
--
<a href="http://www.catb.org/~esr/";>Eric S. Raymond</a>
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