#!/bin/bash
function log {
        logger "rsync-backup: $1"
}

function rotate_backup() {
        local hostname="$1"
        mkdir -p /backups/$hostname/0
        rm -fR /backups/$hostname.7
        mv /backups/$hostname/6 /backups/$hostname/7
        mv /backups/$hostname/5 /backups/$hostname/6
        mv /backups/$hostname/4 /backups/$hostname/5
        mv /backups/$hostname/3 /backups/$hostname/4
        mv /backups/$hostname/2 /backups/$hostname/3
        mv /backups/$hostname/1 /backups/$hostname/2
        cp -al /backups/$hostname/0 /backups/$hostname/1
}

## Start the email log...
cp /root/backup-complete.txt /tmp/email.$$
log "$1: System backup drive detected..."

## Run through the local systems with no compression etc...
for HOST in list of local systems; do
        log "$1: Backing up $HOST..."
        echo "`date`: Started $HOST backup..." >> /tmp/email.$$
        rotate_backup "$HOST"
        rsync -axP --delete-before $HOST:/ /backups/$HOST/0
        log "$1: Backing up $HOST complete..."
        echo "`date`: Complete $HOST backup..." >> /tmp/email.$$
done

## Do the remote hosts with max compression...
for HOST in list of remote systems; do
        log "$1: Backing up $HOST..."
        echo "`date`: Started $HOST backup..." >> /tmp/email.$$
        rotate_backup "$HOST"
        rsync -zaxP --compress-level=9 --delete-before $HOST:/ /backups/$HOST/0
        log "$1: Backing up $HOST complete..."
        echo "`date`: Complete $HOST backup..." >> /tmp/email.$$
done

echo "Stats:" >> /tmp/email.$$
df -h | grep $1 >> /tmp/email.$$
/root/bin/mail-body /tmp/email.$$ netwiz AT crc.id DOT au "Xenhost: Backup Complete!"
rm -f /tmp/email.$$