Resizing a logical volume is not very difficult and can be achieved through very straightforward approach.

Here are the usual steps:

• Create a new partition on the hard disk.
• Add the partition just created as a physical volume.
• Add the new physical volume to the volume group.
• Assign space from the volume group to the logical volume.
• Resize the filesystem.

But in this scenario, the root filesystem (as an LVM partition) is mounted under an extended partition, not within a primary partition.

• You just have one primary partition which is mounted on /boot and rest of the space is part of that extended partition.