%post
cat >/usr/local/bin/rootfs-expand << EOF

#!/bin/bash
clear
part=\$(mount |grep '^/dev.* / ' |awk '{print \$1}')
if [ -z "\$part" ];then
    echo "Error detecting rootfs"
    exit -1
fi
dev=\$(echo \$part|sed 's/[0-9]*\$//g')
devlen=\${#dev}
num=\${part:\$devlen}
if [[ "\$dev" =~ ^/dev/mmcblk[0-9]*p\$ ]];then
    dev=\${dev:0:-1}
fi
if [ ! -x /usr/bin/growpart ];then
    echo "Please install cloud-utils-growpart (sudo yum install cloud-utils-growpart)"
    exit -2
fi
if [ ! -x /usr/sbin/resize2fs ];then
    echo "Please install e2fsprogs (sudo yum install e2fsprogs)"
    exit -3
fi
echo \$part \$dev \$num

echo "Extending partition \$num to max size ...."
growpart \$dev \$num
echo "Resizing ext4 filesystem ..."
resize2fs \$part
echo "Done."
df -h |grep \$part
EOF

chmod +x /usr/local/bin/rootfs-expand
%end