Increase CentOS Cloud Storage

Data Disk

https://serverfault.com/questions/861517/centos-7-extend-partition-with-unallocated-space

Create Physical Volume

sudo pvcreate /dev/vdd

Extend volume group

sudo vgextend centos76_vg /dev/vdd

Extend Logical Volume

lvextend -l +100%FREE /dev/centos76_vg/root

Resize filesystem

sudo resize2fs /dev/mapper/centos76_vg-root