#!/bin/bash
#
# Get active block device
DEVICE_ROOTFS="$(findfs UUID=c0932a41-44cf-463b-8152-d43188553ed4)"
DEVICE="/dev/$(lsblk -no pkname "${DEVICE_ROOTFS}")"

# Fix GPT header backup file
sgdisk -e "${DEVICE}" &&
partprobe "${DEVICE}" &&

# Resize needed?
UNUSED=$(sfdisk -Fq "${DEVICE}" | cut -d " " -f 3 | tail -1)
if [ -z "${UNUSED}" ] || [ "${UNUSED}" -le "16384" ]; then
    echo "[INFO] No resize of rootfs partition needed"
    exit 0
else
    echo "[INFO] Resizing the rootfs partition"
    parted "${DEVICE}" unit % resizepart 2 100% &&
    partprobe "${DEVICE}" &&
    sync &&
    resize2fs "${DEVICE_ROOTFS}" &&
    echo "[OK]"
fi