Garbage collection script

This makes subsequent git clones from the dist-git machine much more IO effective and faster.
It also saves disk space. It cleans up all unnecessary files.
The dist-git-gc script will run monthly.

configs/dist-git/dist-git.conf

@@ -7,6 +7,9 @@ git_author_email = rel-eng@lists.fedoraproject.org
 
 lookaside_dir  = /var/lib/dist-git/cache/lookaside/pkgs
 gitroot_dir    = /var/lib/dist-git/git
+# relates to the dist-git-gc script (and timer),
+# we need to dive 2 levels from gitroot_dir in the directory structure
+git_gc_depth   = 2
 
 gitolite       = True
 grok           = True

configs/systemd/dist-git-gc.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=Git Repositories Clean Up
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/dist-git-gc
+
+[Install]
+WantedBy=multi-user.target

configs/systemd/dist-git-gc.timer

@@ -0,0 +1,8 @@
+[Unit]
+Description=Git Repositories Clean Up Timer
+
+[Timer]
+OnCalendar=monthly
+
+[Install]
+WantedBy=timers.target

dist-git.spec

@@ -165,6 +165,7 @@ ln -s %{_datadir}/dist-git/setup_git_package %{buildroot}%{_bindir}/setup_git_pa
 ln -s %{_datadir}/dist-git/mkbranch %{buildroot}%{_bindir}/mkbranch
 ln -s %{_datadir}/dist-git/mkbranch_branching %{buildroot}%{_bindir}/mkbranch_branching
 ln -s %{_datadir}/dist-git/remove_unused_sources %{buildroot}%{_bindir}/remove_unused_sources
+mv %{buildroot}%{_datadir}/dist-git/dist-git-gc %{buildroot}%{_bindir}/dist-git-gc
 
 # ------------------------------------------------------------------------------
 # SELinux
@@ -226,6 +227,8 @@ fi
 
 %{_unitdir}/dist-git@.service
 %{_unitdir}/dist-git.socket
+%{_unitdir}/dist-git-gc.service
+%{_unitdir}/dist-git-gc.timer
 
 # ------------------------------------------------------------------------------
 # /var/lib/ ...... dynamic persistent files

scripts/dist-git/dist-git-gc

@@ -0,0 +1,11 @@
+#!/usr/bin/bash
+# Cleanup unnecessary files
+# The default DEPTH is 2 because the directory path is /var/lib/dist-git/git/rpms/<package>
+
+REPODIR=$(crudini --get dist-git.conf dist-git gitroot_dir)
+DEPTH=$(crudini --get dist-git.conf dist-git git_gc_depth)
+
+find "$REPODIR" -mindepth "$DEPTH" -maxdepth "$DEPTH" -type d |
+  while read -r DIRECTORY; do
+    (cd "$DIRECTORY" && git gc)
+  done