ubuntu lvm backup

#!/bin/bash
volgroup="qiwiwork"
volumes="root home"
backupstore="/mnt/shares/public/Backup/qiwiwork"
taroptions="--exclude-caches"

mdate=`date +"%y-%m-%d-%H-%M-%S"`
backupvol="backupvol"
backupmnt="/mnt/${backupvol}"


mkdir -p  "$backupmnt"
mkdir -p  "$backupstore"

for volume in $volumes
do
        lvcreate -L2G -s -n $backupvol "/dev/${volgroup}/${volume}"
        mount /dev/${volgroup}/${backupvol} "${backupmnt}"
        tar ${taroptions}  -czvpf "${backupstore}/${volgroup}_${volume}-${mdate}.tgz" -g "$backupstore/${volgroup}_${volume}.index" -C "$backupmnt" .
        umount "$backupmnt"
        echo y | lvremove "/dev/${volgroup}/${volume}"
done

rm -rf "$backupmnt"