Adding initial backup script

svn-backup.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+# Creates complete SVN dumps of all repositories within $repo_dir to $backup_dir.
+# Backup is only made when the repo revision is greater than the one of the previous backup.
+#
+# Only one backup of a repo is kept.
+#
+# The script implies that the repository names are "prefix codes", i.e. none of
+# their names begin with an other repo name (eg. "test" and "test-2")
+#
+# Compression is made with XZ (LZMA 2).
+
+set -e
+
+repo_dir="/srv/svn/repositories"
+backup_dir="/srv/backup/SVN"
+
+svnadmin="/usr/bin/svnadmin"
+svnlook="/usr/bin/svnlook"
+
+for repo in "$repo_dir"/*; do
+ name=$(basename "$repo")
+ revision=$($svnlook youngest "$repo")
+ target="$backup_dir/$name-$revision.xz"
+ if [ ! -e "$target" ]; then
+ rm -f "$backup_dir/$name-*.xz"
+ nice $svnadmin dump --deltas --quiet "$repo" | xz --compress --stdout -9 --extreme > "$target"
+ fi
+done