Update on KVM Shutdown on Ubuntu
About two years ago, I wrote an article about how to make libvirt on Ubuntu 10.04 LTS to shutdown the virtual machines gracefully, when the host system is shutdown or rebooted.
Now I recently found out, that they implemented a similar approach in Ubuntu 12.04 LTS. The only problem with this is, that the default timeout is too short (30 seconds) for virtual machines running complex services. Therefore, I documented how to change this timeout in my wiki.