virutalization

I faced a problem - if there is a virtualization system KVM on ubuntu installed, then when host is turning off or rebooting, if it has working vms on it, the process of turning off is too slow. I've find out that this happens because of two things - the first is - when host is turning off virtual machines are comming to suspend state, and that process takes a long time. And second - there are too big timeouts for turning off - 5 minutes to each VM, and host can turn off only one vm at same time.

In this article I will show you how you can change suspend to power off, and how to decrease timeouts for turn off.