def vm_migrate(options = {})
priority = options['priority'].nil? ? 'defaultPriority' : options["priority"]
raise ArgumentError, "instance_uuid is a required parameter" unless options.has_key? 'instance_uuid'
search_filter = { :uuid => options['instance_uuid'], 'vmSearch' => true, 'instanceUuid' => true }
vm_mob_ref = @connection.searchIndex.FindAllByUuid(search_filter).first
unless vm_mob_ref.kind_of? RbVmomi::VIM::VirtualMachine
raise Fog::Vsphere::Errors::NotFound,
"Could not find VirtualMachine with instance uuid #{options['instance_uuid']}"
end
task = vm_mob_ref.MigrateVM_Task(:pool => options['pool'], :host => options['host'], :priority => "#{priority}", :state => options['state'] )
task.wait_for_completion
{ 'task_state' => task.info.state }
end