Merge pull request #22 from toddejohnson/forget-prune

Forget now has --prune which might be more efficent.

usr/local/sbin/restic_backup.sh

@@ -65,12 +65,14 @@ restic backup \
 	$BACKUP_PATHS &
 wait $!
 
-# Dereference old backups.
+# Dereference and delete/prune old backups.
 # See restic-forget(1) or http://restic.readthedocs.io/en/latest/060_forget.html
 # --group-by only the tag and path, and not by hostname. This is because I create a B2 Bucket per host, and if this hostname accidentially change some time, there would now be multiple backup sets.
 restic forget \
 	--verbose \
 	--tag $BACKUP_TAG \
+	--option b2.connections=$B2_CONNECTIONS \
+        --prune \
 	--group-by "paths,tags" \
 	--keep-daily $RETENTION_DAYS \
 	--keep-weekly $RETENTION_WEEKS \
@@ -78,13 +80,6 @@ restic forget \
 	--keep-yearly $RETENTION_YEARS &
 wait $!
 
-# Remove old data not linked anymore.
-# See restic-prune(1) or http://restic.readthedocs.io/en/latest/060_forget.html
-restic prune \
-	--option b2.connections=$B2_CONNECTIONS \
-	--verbose &
-wait $!
-
 # Check repository for errors.
 # NOTE this takes much time (and data transfer from remote repo?), do this in a separate systemd.timer which is run less often.
 #restic check &