The June issue of ";login: Magazine" (the Usenix magazine) is out and it includes a piece I contributed to:
Ganeti: Cluster Virtualization Manager by Guido Trotter and Tom Limoncelli
If you are a Usenix member you'll receive the issue in the mail soon if you haven't already. Otherwise you can purchase the article or the entire magazine online. Even better: join Usenix and don't miss an issue!