Move ramdisk backup/restore to tmpfs initskript

src/initscripts/init.d/tmpfs

@@ -1,7 +1,6 @@
 #!/bin/sh
 # Begin $rc_base/init.d/tmpfs
 
-
 . /etc/sysconfig/rc
 . $rc_functions
 
@@ -13,17 +12,30 @@ fi
 
 case "$1" in
 	start)
-		/etc/init.d/collectd restore
+		$0 restore
 		if [ ! -e $RRDLOG.bak/vnstat ]; then
 			mkdir -p $RRDLOG.bak/vnstat
 		fi
 		;;
 	stop)
-		/etc/init.d/collectd backup
+		$0 backup
 		;;
 
+	backup)
+		boot_mesg "Save ramdisk..."
+		cp -pR $RRDLOG/* $RRDLOG.bak/
+		evaluate_retval
+		;;
+	restore)
+		if [ -e $RRDLOG.bak ];then
+			boot_mesg "Restore ramdisk..."
+			cp -pR $RRDLOG.bak/* $RRDLOG/
+		fi
+		;;
+
+
 	*)
-		echo "Usage: $0 {start|stop}"
+		echo "Usage: $0 {start|stop|backup}"
 		exit 1
 		;;
 esac