def _choose_host_to_migrate(self, context, weighted_instances, nodes):
for c in weighted_instances:
filtered, filter_properties = self.filter_hosts(context, c, nodes)
if filtered:
chosen_instance = c
break
if not filtered:
return None, None
nodes = filter_properties['nodes']
# 'memory_total' field shouldn't be normalized.
for n in nodes:
del n['memory_total']
filtered_nodes = [
n for n in nodes
for host in filtered if n['host'] == host.hypervisor_hostname]
normalized_hosts = lb_utils.normalize_params(filtered_nodes, 'host')
weighted_hosts = self._weight_hosts(normalized_hosts)
return weighted_hosts[0], chosen_instance
def _choose_host_to_migrate(self, context, weighted_instances, nodes):
for c in weighted_instances:
filtered, filter_properties = self.filter_hosts(context, c, nodes)
if filtered:
chosen_instance = c
break
if not filtered:
return None, None
nodes = filter_properties['nodes']
# 'memory_total' field shouldn't be normalized.
for n in nodes:
del n['memory_total']
filtered_nodes = [
n for n in nodes for host in filtered
if n['host'] == host.hypervisor_hostname
]
normalized_hosts = lb_utils.normalize_params(filtered_nodes, 'host')
weighted_hosts = self._weight_hosts(normalized_hosts)
return weighted_hosts[0], chosen_instance
def _choose_instance_to_migrate(self, instances, extra_info=None):
instances_params = []
for i in instances:
instance_resources = lb_utils.get_instance_resources(i)
if instance_resources:
instances_params.append(instance_resources)
LOG.debug(_(instances_params))
normalized_instances = lb_utils.normalize_params(instances_params)
LOG.info(_(normalized_instances))
if extra_info.get('cpu_overload'):
normalized_instances = filter(lambda x: x['memory'] == 0,
normalized_instances)
extra_info['k_cpu'] = -1
weighted_instances = self._weight_instances(normalized_instances,
extra_info)
LOG.info(_(weighted_instances))
for chosen_instance in weighted_instances:
chosen_instance['resources'] = filter(
lambda x: x['uuid'] == chosen_instance['uuid'],
instances_params)[0]
yield chosen_instance
def _choose_instance_to_migrate(self, instances, extra_info=None):
instances_params = []
for i in instances:
instance_resources = lb_utils.get_instance_resources(i)
if instance_resources:
instances_params.append(instance_resources)
LOG.debug(_(instances_params))
normalized_instances = lb_utils.normalize_params(instances_params)
LOG.info(_(normalized_instances))
if extra_info.get('cpu_overload'):
normalized_instances = filter(lambda x: x['memory'] == 0,
normalized_instances)
extra_info['k_cpu'] = -1
weighted_instances = self._weight_instances(normalized_instances,
extra_info)
LOG.info(_(weighted_instances))
for chosen_instance in weighted_instances:
chosen_instance['resources'] = filter(
lambda x: x['uuid'] == chosen_instance['uuid'],
instances_params)[0]
yield chosen_instance
