Re: Adjust revision in new repository

On Fri, Sep 1, 2023 at 11:05 AM Magnus Lyrberg
<[email protected]> wrote:
> On Thu, Aug 31, 2023 at 4:51 PM Johan Corveleyn <[email protected]> wrote:
> > On Thu, Aug 31, 2023 at 2:21 PM Magnus Lyrberg
> > <[email protected]> wrote:
> > >
> > > Hello.
> > >
> > > I'm not subscribed so please CC me in any response.
> > >
> > > Is there some other way besides making a bunch of dummy commits
> > > to reach our current revision number in a new repository?
> >
> > Maybe you can give svndumpfilter [1] a try to filter out the "cruft"
> > (after creating a dump file from the original repository). It has
> > options like:
> >
> >     --drop-empty-revs
> >     If the current filtering invocation causes any revision to be
> > empty (i.e., the revision causes no change to the repository), removes
> > these revisions from the final dump file.
> >
> >     --renumber-revs
> >     Renumbers revisions that remain after filtering.
> >
> > which seems to indicate that by default (not using these options) it
> > will keep the original revision numbering (even if you filter out
> > entire revisions so they become empty).
> >
> > You'll have to create a dump file first, by using 'svnadmin dump' if
> > you have file access to the repo, or 'svnrdump dump' if you only have
> > remote access. Then svndumpfilter it, and 'svnadmin load' it into a
> > new repository. Maybe first try it with a small test sample to see if
> > it works as expected.
>
> Unfortunately 'svnadmin load' ignores the revision information in the dump
> file. If the new repository is empty it will start with revision 1
> regardless of
> what the dump file says.
>
> I made a quick test to verify this:
>
> svnadmin load /var/svn/repo2 < partial_dump.dump
> <<< Started new transaction, based on original revision 7
>      * adding path : test.txt ... done.
>
> ------- Committed new rev 1 (loaded from original rev 7) >>>

But what is partial_dump.dump? Can you show us the exact commands you
used to create it?

Did you create this by dumping only revisions 7 and 8 from the
original repository, as in 'svnadmin dump /path/to/orig_repos -r7:8 >
partial_dump.dump'? In that case, it is expected to behave like you
described.

Or did you create it by dumping the entire repository, and then
svndumpfilter-ing out the unneeded stuff, as in 'svnadmin dump
/path/to/orig_repos | svndumpfilter exclude /path/to/unneededstuff >
partial_dump.dump'?

It is the last technique that I was suggesting, and I would expect
that to retain all the existing revision numbers (some revisions might
become empty revs because of the filtering, but they should still
"count").

-- 
Johan