Hi,

I've been trying to convert an existing git-svn clone to noMetadata
(i.e. get rid of git-svn-id in the commit messages), primarily because
I've been using it to track two SVN repos which were originally just a
single repo-- they have the same UUID but are located on different
machines, and have branched significantly, so content-wise are no longer
the same repo.

Because the two repos have a single line of commits which they share, it
would be best if I could store that history in my git repo (as I need to
use it for merging between the two trees). Graphically, my current
history looks something like this:


    A -- B -- C -- D -- E -- a -- b -- c

    A'-- B'-- C'-- D'-- E'-- x -- y -- z

where, in reality, this should be represented as:

    A -- B -- C -- D -- E -- a -- b -- c
                         \
                          +- x -- y -- z

Because the ancestor revisions (A..E) have different commit messages
(because of the git-svn-id), they have differing SHA1 ids.  Which means
I have a hard time trying to track both branches using gitk.

I used git-filter-branch to strip off the git-svn-id lines, as follows:

 $ git filter-branch --msg-filter 'sed -e "s/^git-svn-id.*$//"' \
       --commit-filter 'NEW_SHA1=`git commit-tree "$@"`; \
         echo "s/$GIT_COMMIT/$NEW_SHA1/" >> $REMAP_FILE; \
         echo $NEW_SHA1' HEAD

The mappings between the old commit SHA1s and the new commit SHA1s I
store in $REMAP_FILE (somewhere), which I then execute as a sed script
against all my .rev_db files:

 $ find .git/svn/ -name '.rev_db' | xargs sed -f $REMAP_FILE -i.bak

Now, my problems is I've apparently confused git-svn. I can't seem to do
a git-svn rebase on this particular repo. For the record, I've changed
.git/config and set svn.noMetadata on this repo.

In particular, it seems that git-svn can't find the SVN metadata (even
if .rev_db exists). Exact error is "Unable to determine upstream SVN
information from working tree history".

The reason why I can't do a fresh git-svn clone of the two SVN repos is
the repo is already at ~7700 revisions, with large files. I don't have
the time to do a proper clone at the moment, and I tried this as an
alternative.

And yes, I did all of this on a copy of an existing repo, not the
original repo itself.

-- 
JM Ibanez
Software Architect
Orange & Bronze Software Labs, Ltd. Co.

jm@orangeandbronze.com
http://software.orangeandbronze.com/
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