In Linux, the Logical Volume Manager (LVM) is a tool for virtualizing disks. It can create “virtual” hard drive partitions, which can be expanded, shrunk, or moved. It also allows you to use multiple small disks to create larger partitions.
For more explanation on this video: https://www.linuxhelp.com/how-to-create-and-extend-logical-volumes-by-using-lvm-on-ubuntu-21-04
How to create and extend logical volumes by using LVM on Ubuntu 21.04
