Install guestfs-tools (required for virt-resize command):

sudo dnf install -y guestfs-tools

To resize qcow2 images, you’ll have to create a new qcow2 image with the size you want, then use virt-resize on the old qcow2 image to the new one.

You’ll need to know the root partition within the old qcow2 image.

Create a new qcow2 image with the size you want:

qemu-img create -f qcow2 -o preallocation=metadata newdisk.qcow2 100G

Now resize the old one to the new one:

virt-resize --expand /dev/vda3 olddisk.qcow2 newdisk.qcow2

Once you boot into the new qcow2 image, you’ll probably have to adjust the size of the logical volume if it has LVM:

sudo lvresize -l +100%FREE /dev/mapper/sysvg-root

Then resize the XFS root partition within the logical volume:

sudo xfs_growfs /dev/mapper/sysvg-root