VMs

Windows7 on KVM-QEMU with QCOW2 Snapshots

In this article we will discuss the steps involved in building a new Windows 7 VM, use a QCOW2 format image so that we can save disk space and make use of snapshots with our VM, Get the Redhat Virtual I/O drivers installed during the Windows Installation process so that we can take advantage of the performance improvements that they offer, Install the Redhat Spice Video and other Guest Tools so that, among other things, our Desktop Clipboard will interface properly with our VM clipboard, and we'll perform some important additional customizations to improve the performance and reliability of our Windows 7 VM.

KVM-QEMU, QCOW2, QEMU-IMG and Snapshots

The QCOW2 format is the most powerful format supported by KVM-QEMU. It does not pre-allocate disk space, it offers the ability to create snapshots and, later, you can create new images that use a previous image as a base to dramatically speed-up the setup of a future VM. In this article we will look at some of the advanced features available in the QCOW2 format through the QEMU Image tool. We create a QCOW2 image, create snapshots within the image, create an image that is based on a backing file and copy an image to get rid of the reference to the backing file.
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