Managing storage on Linux devices using LVM

Table of Contents

Logical Volume Manager (LVM) is a tool that allows dynamic resizing, snapshots, and efficient management of storage. In this post, I will walk you through the basics of LVM and provide a step-by-step guide to create or extend logical volume on devices running Linux.

Create LVM #

Extend LVM #

In this example i will show you how to extend root volume in Ubuntu

Check your volume

lsblk

In this example you can i have partion sda3 for mount point / and i want extend / from 48GB to 58GB

pvcreate /dev/sda4

Extend volume group to include sda4

vgextend ubuntu-vg /dev/sda4

Extend the logical volume

use this command lvextend -l +100%FREE /dev/<vg-name>/<lv-name>>

lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

Now run resize2fs command to implement above size to file system

resize the filesystem

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

Check to confirm the result

lsblk