#!/bin/sh
# Monthly backup script for my NAS

#set -e

DEVICE=/dev/sdb1

pass backups/disk | sudo /sbin/cryptsetup luksOpen $DEVICE backups "$@"

if grep /dev/mapper/backups /proc/mounts >/dev/null
then
	echo "external drive ($DEVICE) seems to be mounted. good."
else
	if sudo mount /dev/mapper/backups /mnt/backups/
	then 
		echo " * external drive ($DEVICE) successfuly mounted."
	else
		echo " * FATAL: unable to mount"
		exit 1
	fi 
fi

for slot in public private
do
	echo
	echo " * backing up $slot"
	echo
	time ionice -c 2 rsync --rsh='ssh -q -o RemoteCommand=none' --info=progress2 -av --delete --exclude-from ~/.backup_excludes naz:/nfs/$slot/ /mnt/backups/$slot/
done

echo
echo " * unmounting"
echo

sleep 2
sync

sudo umount /dev/mapper/backups
sudo dmsetup remove /dev/mapper/backups