vms/scripts/minimize.sh

#!/bin/sh

set -ex

rm -rf /home/vagrant/.ansible
sudo rm -rf /root/.ansible

if [ ! -e /etc/fedora-release ]; then
	sudo dd if=/dev/zero of=/var/EMPTY bs=1M || :
	sync
	sudo rm /var/EMPTY
	sync
fi

# In CentOS 7, blkid returns duplicate devices
swap_device_uuid=$(sudo /sbin/blkid -t TYPE=swap -o value -s UUID | uniq)
swap_device_label=$(sudo /sbin/blkid -t TYPE=swap -o value -s LABEL | uniq)
if [ -n "$swap_device_uuid" ]; then
	swap_device=$(readlink -f /dev/disk/by-uuid/"$swap_device_uuid")
elif [ -n "$swap_device_label" ]; then
	swap_device=$(readlink -f /dev/disk/by-label/"$swap_device_label")
fi

if [ -n "${swap_device}" ] && [ -e "${swap_device}" ]; then
	case ${swap_device} in
		"/dev/zram"*) ;;
		*)
			sudo /sbin/swapoff "$swap_device"
			sudo dd if=/dev/zero of="$swap_device" bs=1M || :
			sudo /sbin/mkswap ${swap_device_label:+-L "$swap_device_label"} ${swap_device_uuid:+-U "$swap_device_uuid"} "$swap_device"
			;;
	esac
fi

sleep 15  # Hyper-v seems to be super fast during boot