Create the second log disk: qemu-img create -f qcow2 logs.qcow2 30G .

The .qcow2 file acts as the boot drive (Drive 1). You must add a second virtual disk (at least 30GB) to act as the log/cache drive (Drive 2).

If you are looking at this file, you are likely preparing to deploy FortiOS 7.2.1 in a virtualized environment like Proxmox, OpenStack, or a standard Linux KVM host. Anatomy of the Filename

Are you deploying this on , Eve-NG , or a standard Ubuntu KVM host?