Migrate a cvs repository to git bare repository on Ubuntu Linux

1. Install git-cvs package which includes the migration tools:

   sudo apt-get install git-cvs
   

2. Set the cvs repository to read-only:

   sudo chmod -R ugo-w /path/to/CVSROOT
   

3. Make the root directory for git and give permissions to the dev-users group:

   sudo mkdir /path/to/git
   sudo chgrp dev-users /path/to/git
   sudo chmod 6775 /path/to/git
   sudo chmod +t /path/to/git
   

4. Migrate the cvs modules into git (in the example below, proj1 is the name of the cvs module and it is also used as the name of the git directory):

   cd /path/to/git
   git cvsimport -k -i -d /path/to/CVSROOT -C proj1 proj1
   

5. Rename the git project directory:

   sudo mv /path/to/git/proj1/.git /path/to/git/proj1.git
   sudo rmdir /path/to/git/proj1
   

6. Fix permissions of the git project directory:

   sudo chgrp -R dev-users /path/to/git/proj1.git
   sudo chmod -R ug+w /path/to/git/proj1.git
   sudo chmod +s /path/to/git/proj1.git
   cd /path/to/git/proj1.git
   # the hooks/ and info/ dirs are special since the control repository access
   sudo chgrp -R git-admin hooks info config description
   sudo find -type d -exec chmod +s {} \;
   

7. Configure the git project to be bare git repository:

   cd /path/to/git/proj1.git
   git config --bool core.bare true
   git config --bool receive.denyNonFastforwards true
   git config core.sharedRepository group
   

   The config file should be look like below:

   [core]
       repositoryformatversion = 0
       filemode = true
       bare = true
       sharedRepository = group
       logallrefupdates = true
   [receive]
       denyNonFastforwards = true
   

See also

1. Optimize git repository in crontab using git-gc
2. Git Book - Set up a public repository
3. Git Book - Set up a private repository
4. Git bare vs. non-bare repostiroies

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