simple lvm backuper

lvmbackup.sh

#!/bin/bash
# Dmitry Menshikov <d.menshikov@creators.com.ua>
# http://menshikov.mp

PATH_TO_VG="/dev/mainvg"
BACKUP_PATH="/media/Reservation/.backups/zoidberg"
BACKUP_PATH=$BACKUP_PATH/`date +"%d_%m_%Y"`

if [[ $EUID -ne 0 ]]; then
    echo "You must be a root user" 2>&1
    exit 1
fi

if [ -d "$BACKUP_PATH" ]; then
    echo "$BACKUP_PATH is not empty. Remove directory if you need to overwrite backups."
    exit 1
else
    mkdir -p $BACKUP_PATH
fi

lvcreate -L1G -s -n rootsnapshot $PATH_TO_VG/root
lvcreate -L4G -s -n homesnapshot $PATH_TO_VG/home
lvcreate -L4G -s -n swapsnapshot $PATH_TO_VG/swap

dd if=$PATH_TO_VG/rootsnapshot of=$BACKUP_PATH/root.dd
lvremove -f $PATH_TO_VG/rootsnapshot

dd if=$PATH_TO_VG/homesnapshot of=$BACKUP_PATH/home.dd
lvremove -f $PATH_TO_VG/homesnapshot

dd if=$PATH_TO_VG/swapsnapshot of=$BACKUP_PATH/swap.dd
lvremove -f $PATH_TO_VG/swapsnapshot