ubuntu@ip-172-31-39-166:~$ sudo resize2fs /dev/xvdd1
resize2fs 1.44.1 (24-Mar-2018)
Filesystem at /dev/xvdd1 is mounted on /mnt; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 15
The filesystem on /dev/xvdd1 is now 31457019 (4k) blocks long.
