Subversion to Git Conversion: Notes on the Details

Main reference: svn2git README file, hereafter referred to as README.

Preliminaries

Follow instructions in README.

Used an "authors" file in /home/marki/.svn2git as described in README.
Wrote script user_list_svn_convert.pl to extract all usernames in the "halld" group at JLab and put them into the "authors" file. Creates email address by appending "@jlab.org" in all cases. If any authors are missing in the file, svn2git will exit and report the omission as an error.

The last revision in the Subversion repository before conversion: Rev 19042 2015-07-15 17:35:06

Details of the steps are described in README.

Delete the practice repositories on GitHub.
Create a blank repository to receive the converted repository on GitHub.
Make a copy of the complete Subversion repository on the local disk with rsync.
Use svn2git to do the conversion using the local-disk-resident version of the Subversion repository.
In the resulting git repository, delete branches and tags not related to the package, as well as all "@revision" branches and tags.
Clone a bare copy of the repository (--bare option).
Push the bare copy to the GitHub repository with the --mirror option.
Add repositories to the list of those owned by the gluex team on GitHub.

The sim-recon conversion with svn2git took about 8 hours. Hdds took about 20 hours.

The magic command to convert from subversion to git:

cd /path/to/conversion svn2git https://halldsvn.jlab.org/repos --no-minimize-url -v --trunk trunk/sim-recon --branches branches --tags tags

To prepare local repository for import to GitHub:

cd /path/to/clone git clone --bare file:///path/to/conversion

To do the import, from the local host:

cd /path/to/clone/conversion.git
git push --mirror https://github.com/jeffersonlab/sim-recon.git