def min_sd(self, context, **kwargs):
compute_nodes = kwargs.get('nodes')
instances = []
for node in compute_nodes:
node_instances = db.get_instances_stat(context,
node['hypervisor_hostname'])
instances.extend(node_instances)
host_loads = lb_utils.fill_compute_stats(instances, compute_nodes)
LOG.debug(_(host_loads))
vm_host_map = []
for instance in instances:
for node in compute_nodes:
h_hostname = node['hypervisor_hostname']
# Source host shouldn't be use.
if instance.instance['host'] != h_hostname:
sd = self._simulate_migration(instance, node, host_loads,
compute_nodes)
vm_host_map.append({
'host': h_hostname,
'vm': instance['instance_uuid'],
'sd': sd
})
vm_host_map = sorted(vm_host_map, key=lambda x: x['sd']['total_sd'])
LOG.debug(_(vm_host_map))
for vm_host in vm_host_map:
instance = filter(lambda x: x['instance_uuid'] == vm_host['vm'],
instances)[0]
instance_resources = lb_utils.get_instance_resources(instance)
if instance_resources:
filter_instance = {
'uuid': instance['instance_uuid'],
'resources': instance_resources
}
filtered = self.filter_hosts(context,
filter_instance,
compute_nodes,
host=vm_host['host'])
if not filtered[0]:
continue
self.migrate(context, instance['instance_uuid'],
vm_host['host'])
return
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
def min_sd(self, context, **kwargs):
compute_nodes = kwargs.get('nodes')
instances = []
for node in compute_nodes:
node_instances = db.get_instances_stat(
context,
node['hypervisor_hostname'])
instances.extend(node_instances)
host_loads = lb_utils.fill_compute_stats(instances, compute_nodes)
LOG.debug(_(host_loads))
vm_host_map = []
for instance in instances:
for node in compute_nodes:
h_hostname = node['hypervisor_hostname']
# Source host shouldn't be use.
if instance.instance['host'] != h_hostname:
sd = self._simulate_migration(instance, node, host_loads,
compute_nodes)
vm_host_map.append({'host': h_hostname,
'vm': instance['instance_uuid'],
'sd': sd})
vm_host_map = sorted(vm_host_map, key=lambda x: x['sd']['total_sd'])
LOG.debug(_(vm_host_map))
for vm_host in vm_host_map:
instance = filter(lambda x: x['instance_uuid'] == vm_host['vm'],
instances)[0]
instance_resources = lb_utils.get_instance_resources(instance)
if instance_resources:
filter_instance = {'uuid': instance['instance_uuid'],
'resources': instance_resources}
filtered = self.filter_hosts(context, filter_instance,
compute_nodes,
host=vm_host['host'])
if not filtered[0]:
continue
self.migrate(context, instance['instance_uuid'],
vm_host['host'])
return
