backup.sh

#!/bin/bash

MUNIN_DIR="/var/lib/munin"
TARGET="${HOME}/test"

DIRS=$( find /var/lib/munin -iname *.rrd -exec dirname {} \; | uniq )
for DIR in ${DIRS}; do
        mkdir -p ${TARGET}${DIR}
done

FILES=$( find /var/lib/munin -iname *.rrd )
for FILE in ${FILES}; do
        rrdtool dump ${FILE} > ${TARGET}${FILE}.xml
done