#!/bin/sh

set -e

dev=$1
newsize=$2
lowsize=$3

[ -n "$dev" ] || (echo "Device not provided"; exit 1)
[ -n "$newsize" ] || (echo "New size not provided"; exit 1)

#TODO: Get maxsize (from lvm) and oldsize (from fs), and check that...
#	maxsize >= newsize > oldsize
#	or
#	lowsize defined and lowsize < newsize < oldsize

#TODO: Use getopts to enable onlineresize

#TODO: Check if filesystem supports online resizing if requested

[ "$onlineresize" = "yes" ] || umount $dev
[ "$onlineresize" = "yes" ] || e2fsck -f $dev

[ -n "$lowsize" ] && resize2fs $dev $lowsize

lvresize -L $newsize $dev
resize2fs $dev

[ "$onlineresize" = "yes" ] || mount $dev