Skip to main content
Very Important: This is a risky operation and is not recommended if the server does not have a backup.

​
Checking Disks

To list disks in the system: 
lsblk
Disk List As seen in the image, the added disk appears as /dev/sdb. Example commands will proceed with /dev/sdb.

​
Creating Partition on New Disk

sudo fdisk /dev/sdb
Follow the steps below in the fdisk interface:
1

Add New Partition

Press n key and create a new partition.
2

Select Type

Press p key to create a primary partition.
3

Enter Partition Number

Type 1 to specify the partition number.
4

Use Default Settings

Press Enter key (twice) to accept all default settings.
5

Write and Exit

Press w key to save changes.

​
Creating Physical Volume

sudo pvcreate /dev/sdb1

​
Listing Volume Groups

vgdisplay
Volume Group List

​
Adding New Disk to Existing Volume Group

You can use the following command to add the /dev/sdb1 disk to the volume group in your system: 
sudo vgextend <VG-NAME> /dev/sdb1

​
Listing Logical Volumes

lvdisplay
Logical Volume List

​
Expanding Logical Volume

To expand the logical volume named ubuntu-lv in the volume group named ubuntu-vg with 100% free space, you can run the following command: 
sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

​
Expanding File System

sudo resize2fs /dev/ubuntu-vg/ubuntu-lv