LVM creation script

cratelvm.sh

if [ ! -e /dev/disk/by-label/DATA ]; then 
	_disk=`fdisk -l |grep -Po '^Disk /dev/[a-z]+'|tail -1|cut -d' ' -f 2`
	_disk_size=`fdisk -l |grep -P '^Disk /dev'|tail -1|cut -d' ' -f 3`
	pvcreate ${_disk}
	vgcreate data ${_disk}
	lvcreate -n data -L$(expr $_disk_size * 80 / 100)G data
	mkfs.ext4 /dev/data/data
	e2label /dev/data/data DATA
else
	echo "DATA already exists. Exiting."
fi