Review: "Windows 10.qcow2"

Overview

"Windows 10.qcow2" refers to a QCOW2-format disk image that contains a Windows 10 installation. QCOW2 (QEMU Copy On Write version 2) is a common virtual machine disk format used with QEMU/KVM, libvirt, and other virtualization tools. A review of this topic should cover format characteristics, use cases, setup, performance/security considerations, and troubleshooting.

Note: Evaluation images expire after 90 days. Do not use these for permanent production.

file to appear much larger than the volume reported inside Windows. This often occurs when data is written and then deleted; the file on the host grows to accommodate the data but doesn't automatically shrink back. Performance : Performance can be limited by the drivers used. Using VirtIO drivers

5.2 Using qemu-img for Snapshots

qemu-img snapshot -c snap1 windows10.qcow2
qemu-img snapshot -l windows10.qcow2
qemu-img snapshot -a snap1 windows10.qcow2

qemu-img snapshot -c -a Windows10.qcow2