ECC and certbot automated renewal
The problem is that the certbot program cannot renew a certificate for an ECC public key.
Documentation
Backup Virtual Machine
Sources:
Reclaiming space on qcow2 disk image
Update 2018-11-11:
Managing KVM and qcow2 images
This is a series of examples to provide a reference manual to manage qcow2 disk images.
How to mount a qcow2 image with qemu-nbd
Mount a qcow2 image
modprobe nbd max_part=8