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Psst... hey. You're reading the latest content, but it might be out of sync with code. You can read Nova 2011.2 docs or all OpenStack docs too.

The nova.compute.power_state Module

Power state is the state we get by calling virt driver on a particular domain. The hypervisor is always considered the authority on the status of a particular VM, and the power_state in the DB should be viewed as a snapshot of the VMs’s state in the (recent) past. It can be periodically updated, and should also be updated at the end of a task if the task is supposed to affect power_state.

name(code)
valid_states()