backup.sh

# This is a very simple script for performing whole disk backups. Rotation scheme: 3 daily backups, 2 weekly and 2 monthly.
# Edit to suit your needs. The only non-standard requirement is sshfs.
TARGET="1.1.1.1"
MAIL="my@mail.com"

sshfs root@$TARGET:/backup/disk /root/mnt

if [ $# -eq 0 ]; then
    echo "Run with argument: daily, weekly or monthly."
    exit
fi

if [ $1 == "daily" ]; then
    if [ -f /root/mnt/disk.2.backup ]; then
        mv /root/mnt/disk.2.backup /root/mnt/disk.3.backup
    fi
    if [ -f /root/mnt/disk.1.backup ]; then
        mv /root/mnt/disk.1.backup /root/mnt/disk.2.backup
    fi
    if [ -f /root/mnt/disk.0.backup ]; then
        mv /root/mnt/disk.0.backup /root/mnt/disk.1.backup
    fi
    OUTPUT="disk.0.backup"
elif [ $1 == "weekly" ]; then
    if [ -f /root/mnt/disk.week.1.backup ]; then
        mv /root/mnt/disk.week.1.backup /root/mnt/disk.week.2.backup
    fi
    if [ -f /root/mnt/disk.week.0.backup ]; then
        mv /root/mnt/disk.week.0.backup /root/mnt/disk.week.1.backup
    fi
    OUTPUT="disk.week.0.backup"
elif [ $1 == "monthly" ]; then
    if [ -f /root/mnt/disk.month.1.backup ]; then
        mv /root/mnt/disk.month.1.backup /root/mnt/disk.month.2.backup
    fi
    if [ -f /root/mnt/disk.month.0.backup ]; then
        mv /root/mnt/disk.month.0.backup /root/mnt/disk.month.1.backup
    fi
    OUTPUT="disk.month.0.backup" 
else
    echo "Wrong argument!"
    exit
fi

dd if=/dev/sda bs=16M | gzip -3 | ssh -p 22 root@$TARGET "dd of=/backup/disk/$OUTPUT bs=16M"

RESULT=$?
if [ $RESULT -ne 0 ]; then
    echo "Whole disk backup failed at domain.com!" | mail -s "Backup error" $MAIL
else
    if [ -f /root/mnt/disk.3.backup ]; then
        rm -rf /root/mnt/disk.3.backup
    fi
    if [ -f /root/mnt/disk.week.2.backup ]; then
        rm -rf /root/mnt/disk.week.2.backup
    fi
    if [ -f /root/mnt/disk.month.2.backup ]; then
        rm -rf /root/mnt/disk.month.bacup
    fi
fi

umount /root/mnt