expand_volume.sh

# The sed script strips off all the comments so that we can
# document what we're doing in-line with the actual commands
# Note that a blank line (commented as "defualt" will send a empty
# line terminated with a newline to take the fdisk default.
sed -e 's/\t\([\+0-9a-zA-Z]*\)[ \t].*/\1/' << EOF | fdisk /dev/sdb
	d # delete existing partition
	n # new partition
	p # primary partition
	1 # partition number 1
	 # default - start at beginning of disk
	 # default - end of disk
	p # print the in-memory partition table
	w # write the partition table
	q # and we're done
EOF

partprobe
umount /dev/sdb1
e2fsck /dev/sdb1
resize2fs /dev/sdb1
mount -a