Increasing Disk Size of QEMU Disk

Overview

Sometimes it may become necessary to increase a disk drive size on a QEMU (KVM) Virtual Machine.

Increasing Disk Size

1. Shut down VM
2. Locate the disk path:

sudo virsh domblklist <vm name>

 Target   Source
-----------------------------------------------
 vda      /var/lib/libvirt/images/rhel8.qcow2
 sda      -

3. Extend disk size

sudo qemu-img resize <disk path> +10G

4. Restart VM
5. Profit