From bc840aabbed1240a46092bba6c832d0811a89084 Mon Sep 17 00:00:00 2001
From: Dan Brown <dbbnrl@gmail.com>
Date: Sat, 8 Feb 2014 16:53:15 -0500
Subject: [PATCH] Add rsync backups.

---
 init/msm | 15 +++++++++++++++
 msm.conf | 14 ++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/init/msm b/init/msm
index 31b2cea..1131d9b 100755
--- a/init/msm
+++ b/init/msm
@@ -375,6 +375,7 @@ world_toggle_ramdisk_state() {
 world_backup() {
 	manager_property WORLD_ARCHIVE_ENABLED
 	manager_property RDIFF_BACKUP_ENABLED
+	manager_property RSYNC_BACKUP_ENABLED
 	local server_id="${WORLD_SERVER_ID[$1]}"
 	local containing_dir="$(dirname "${WORLD_PATH[$1]}")"
 	local dir_name="$(basename "${WORLD_PATH[$1]}")"
@@ -398,6 +399,14 @@ world_backup() {
     as_user "${SERVER_USERNAME[$server_id]}" "mkdir -p \"${RDIFF_BACKUP_PATH[$1]}\" && cd \"$containing_dir\" && nice -n \"$SETTINGS_RDIFF_BACKUP_NICE\" rdiff-backup \"${dir_name}\" \"${RDIFF_BACKUP_PATH[$1]}\" && nice -n \"$SETTINGS_RDIFF_BACKUP_NICE\" rdiff-backup --remove-older-than \"$SETTINGS_RDIFF_BACKUP_ROTATION\"D --force \"${RDIFF_BACKUP_PATH[$1]}\""
 		echo "Done."
 	fi
+
+	if [[ "$SETTINGS_RSYNC_BACKUP_ENABLED" == "true" ]]; then
+		echo -n "rsync-backup world \"${WORLD_NAME[$1]}\"... "
+		file_name="$(date "+%F-%H-%M-%S")"
+		server_property "$server_id" USERNAME
+		as_user "${SERVER_USERNAME[$server_id]}" "mkdir -p \"${RSYNC_BACKUP_PATH[$1]}\" && cd \"$containing_dir\" && rsync -aH --link-dest=\"${RSYNC_BACKUP_PATH[$1]}/latest\" \"${dir_name}\" \"${RSYNC_BACKUP_PATH[$1]}/${file_name}\" && rm -f \"${RSYNC_BACKUP_PATH[$1]}/latest\" && ln -s \"${file_name}\" \"${RSYNC_BACKUP_PATH[$1]}/latest\""
+		echo "Done."
+	fi
 	
 }
 
@@ -503,8 +512,10 @@ world_property() {
 			BACKUP_PATH)
 				manager_property WORLD_ARCHIVE_PATH
 				manager_property WORLD_RDIFF_PATH
+				manager_property WORLD_RSYNC_PATH
 				WORLD_BACKUP_PATH[$1]="$SETTINGS_WORLD_ARCHIVE_PATH/${SERVER_NAME[$sid]}/${WORLD_NAME[$1]}"
 				RDIFF_BACKUP_PATH[$1]="$SETTINGS_WORLD_RDIFF_PATH/${SERVER_NAME[$sid]}/${WORLD_NAME[$1]}"
+				RSYNC_BACKUP_PATH[$1]="$SETTINGS_WORLD_RSYNC_PATH/${SERVER_NAME[$sid]}/${WORLD_NAME[$1]}"
 				;;
 			RAMDISK_PATH)
 				manager_property RAMDISK_STORAGE_ENABLED
@@ -548,6 +559,7 @@ world_dirty_properties() {
 	unset WORLD_LINK$index
 	unset WORLD_BACKUP_PATH$index
 	unset RDIFF_BACKUP_PATH$index
+	unset RSYNC_BACKUP_PATH$index
 	unset WORLD_RAMDISK_PATH$index
 	unset WORLD_INRAM$index
 }
@@ -3247,6 +3259,9 @@ register_settings() {
 	register_setting LOG_ARCHIVE_PATH "/opt/msm/archives/logs"
 	register_setting BACKUP_ARCHIVE_PATH "/opt/msm/archives/backups"
 
+	register_setting RSYNC_BACKUP_ENABLED "false"
+	register_setting WORLD_RSYNC_PATH "/opt/msm/rsync/worlds"
+
 	register_setting JARGROUP_TARGET "target.txt"
 	register_setting JARGROUP_DOWNLOAD_DIR "downloads"
 	register_setting SERVER_PROPERTIES "server.properties"
diff --git a/msm.conf b/msm.conf
index eeb148d..3e14b7a 100644
--- a/msm.conf
+++ b/msm.conf
@@ -84,6 +84,20 @@ RDIFF_BACKUP_NICE="19"
 # Where "rdiff-backup" world backups are stored.
 WORLD_RDIFF_PATH="/opt/msm/rdiff-backup/worlds"
 
+# rsync backup note:
+# rsync backups are simple copies of your world data.  They are similar to the default
+# zip backups but are not placed in .zip files.  They are uncompressed, but files that
+# are unchanged between backups will be hardlinked so they occupy no additional space.
+# Compared to rdiff-backups, they will usually take up more space, but they are
+# "WorldEdit snapshot" compatible like zip backups.
+# If you want to use rsync for backups you need to have it installed on your server.
+
+# Are rsync backups enabled ?
+RSYNC_BACKUP_ENALBED="false"
+
+# Where "rsync" world backups are stored.
+WORLD_RSYNC_PATH="/opt/msm/rsync/worlds"
+
 
 # Server Defaults
 # ---------------