QCOW2 (QEMU Copy-On-Write) is a virtual disk image format used by QEMU, a popular open-source emulator and virtualizer. QCOW2 files store the contents of a virtual hard drive, including the operating system, applications, and data. The format is designed to be efficient, flexible, and compatible with various virtualization platforms.
The filename can be broken down into three critical components: Pa-vm-kvm-9.0.1.qcow2