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iiab/roles/1-prep/templates/iiab-rpi-max-rootfs.sh
2020-07-10 08:47:31 -04:00

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#!/bin/bash -x
# Resize rootfs and its partition on the rpi SD card to maximum size
# To be used by systemd service on boot
# Only resizes if /.resize-rootfs exists
# Assumes root is last partition
# Only works on F22 + where resizepart command exists
# Assumes sd card style partition name like <device>p<partition number>
if [ -f /.resize-rootfs ];then
echo "$0: maximizing rootfs partion"
# Calculate root partition
root_part=`lsblk -aP -o NAME,MOUNTPOINT|grep 'MOUNTPOINT="/"' |awk -F\" '{ print $2 }'`
root_dev=${root_part:0:-2}
root_part_no=${root_part: (-1)}
# Resize partition
growpart /dev/$root_dev $root_part_no
resize2fs /dev/$root_part
rm /.resize-rootfs
fi