# Copyright 2010 United States Government as represented by the # Administrator of the National Aeronautics and Space Administration. # All Rights Reserved. # Copyright (c) 2010 Citrix Systems, Inc. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. """ A fake (in-memory) hypervisor+api. Allows nova testing w/o a hypervisor. This module also documents the semantics of real hypervisor connections. """ import collections import contextlib import time import uuid import fixtures import os_resource_classes as orc from oslo_log import log as logging from oslo_serialization import jsonutils from oslo_utils.fixture import uuidsentinel as uuids from oslo_utils import versionutils from nova.compute import power_state from nova.compute import task_states from nova.compute import vm_states import nova.conf from nova.console import type as ctype from nova import context as nova_context from nova import exception from nova import objects from nova.objects import diagnostics as diagnostics_obj from nova.objects import fields as obj_fields from nova.objects import migrate_data from nova.virt import driver from nova.virt import hardware from nova.virt.ironic import driver as ironic import nova.virt.node from nova.virt import virtapi CONF = nova.conf.CONF LOG = logging.getLogger(__name__) class FakeInstance(object): def __init__(self, name, state, uuid): self.name = name self.state = state self.uuid = uuid def __getitem__(self, key): return getattr(self, key) class Resources(object): vcpus = 0 memory_mb = 0 local_gb = 0 vcpus_used = 0 memory_mb_used = 0 local_gb_used = 0 def __init__(self, vcpus=8, memory_mb=8000, local_gb=500): self.vcpus = vcpus self.memory_mb = memory_mb self.local_gb = local_gb def claim(self, vcpus=0, mem=0, disk=0): self.vcpus_used += vcpus self.memory_mb_used += mem self.local_gb_used += disk def release(self, vcpus=0, mem=0, disk=0): self.vcpus_used -= vcpus self.memory_mb_used -= mem self.local_gb_used -= disk def dump(self): return { 'vcpus': self.vcpus, 'memory_mb': self.memory_mb, 'local_gb': self.local_gb, 'vcpus_used': self.vcpus_used, 'memory_mb_used': self.memory_mb_used, 'local_gb_used': self.local_gb_used } class FakeDriver(driver.ComputeDriver): # These must match the traits in # nova.tests.functional.integrated_helpers.ProviderUsageBaseTestCase capabilities = { "has_imagecache": True, "supports_evacuate": True, "supports_migrate_to_same_host": False, "supports_attach_interface": True, "supports_device_tagging": True, "supports_tagged_attach_interface": True, "supports_tagged_attach_volume": True, "supports_extend_volume": True, "supports_multiattach": True, "supports_trusted_certs": True, "supports_pcpus": False, "supports_accelerators": True, "supports_remote_managed_ports": True, "supports_address_space_passthrough": True, "supports_address_space_emulated": True, # Supported image types "supports_image_type_raw": True, "supports_image_type_vhd": False, } # Since we don't have a real hypervisor, pretend we have lots of # disk and ram so this driver can be used to test large instances. vcpus = 1000 memory_mb = 800000 local_gb = 600000 """Fake hypervisor driver.""" def __init__(self, virtapi, read_only=False): super(FakeDriver, self).__init__(virtapi) self.instances = {} self.resources = Resources( vcpus=self.vcpus, memory_mb=self.memory_mb, local_gb=self.local_gb) self.host_status_base = { 'hypervisor_type': 'fake', 'hypervisor_version': versionutils.convert_version_to_int('1.0'), 'hypervisor_hostname': CONF.host, 'cpu_info': {}, 'disk_available_least': 0, 'supported_instances': [( obj_fields.Architecture.X86_64, obj_fields.HVType.FAKE, obj_fields.VMMode.HVM)], 'numa_topology': None, } self._mounts = {} self._interfaces = {} self.active_migrations = {} self._host = None self._nodes = None def init_host(self, host): self._host = host # NOTE(gibi): this is unnecessary complex and fragile but this is # how many current functional sample tests expect the node name. self._set_nodes(['fake-mini'] if self._host == 'compute' else [self._host]) def _set_nodes(self, nodes): # NOTE(gibi): this is not part of the driver interface but used # by our tests to customize the discovered nodes by the fake # driver. self._nodes = nodes def list_instances(self): return [self.instances[uuid].name for uuid in self.instances.keys()] def list_instance_uuids(self): return list(self.instances.keys()) def plug_vifs(self, instance, network_info): """Plug VIFs into networks.""" pass def unplug_vifs(self, instance, network_info): """Unplug VIFs from networks.""" pass def spawn(self, context, instance, image_meta, injected_files, admin_password, allocations, network_info=None, block_device_info=None, power_on=True, accel_info=None): if network_info: for vif in network_info: # simulate a real driver triggering the async network # allocation as it might cause an error vif.fixed_ips() # store the vif as attached so we can allow detaching it later # with a detach_interface() call. self._interfaces[vif['id']] = vif uuid = instance.uuid state = power_state.RUNNING if power_on else power_state.SHUTDOWN flavor = instance.flavor self.resources.claim( vcpus=flavor.vcpus, mem=flavor.memory_mb, disk=flavor.root_gb) fake_instance = FakeInstance(instance.name, state, uuid) self.instances[uuid] = fake_instance def snapshot(self, context, instance, image_id, update_task_state): if instance.uuid not in self.instances: raise exception.InstanceNotRunning(instance_id=instance.uuid) update_task_state(task_state=task_states.IMAGE_UPLOADING) def reboot(self, context, instance, network_info, reboot_type, block_device_info=None, bad_volumes_callback=None, accel_info=None): # If the guest is not on the hypervisor and we're doing a hard reboot # then mimic the libvirt driver by spawning the guest. if (instance.uuid not in self.instances and reboot_type.lower() == 'hard'): injected_files = admin_password = allocations = None self.spawn(context, instance, instance.image_meta, injected_files, admin_password, allocations, block_device_info=block_device_info) else: # Just try to power on the guest. self.power_on(context, instance, network_info, block_device_info=block_device_info) def get_host_ip_addr(self): return '192.168.0.1' def set_admin_password(self, instance, new_pass): pass def resume_state_on_host_boot(self, context, instance, network_info, block_device_info=None): pass def rescue(self, context, instance, network_info, image_meta, rescue_password, block_device_info): pass def unrescue( self, context: nova_context.RequestContext, instance: 'objects.Instance', ): self.instances[instance.uuid].state = power_state.RUNNING def poll_rebooting_instances(self, timeout, instances): pass def migrate_disk_and_power_off(self, context, instance, dest, flavor, network_info, block_device_info=None, timeout=0, retry_interval=0): pass def finish_revert_migration(self, context, instance, network_info, migration, block_device_info=None, power_on=True): state = power_state.RUNNING if power_on else power_state.SHUTDOWN self.instances[instance.uuid] = FakeInstance( instance.name, state, instance.uuid) def post_live_migration_at_destination(self, context, instance, network_info, block_migration=False, block_device_info=None): # Called from the destination host after a successful live migration # so spawn the instance on this host to track it properly. image_meta = injected_files = admin_password = allocations = None self.spawn(context, instance, image_meta, injected_files, admin_password, allocations) def power_off(self, instance, timeout=0, retry_interval=0): if instance.uuid in self.instances: self.instances[instance.uuid].state = power_state.SHUTDOWN else: raise exception.InstanceNotFound(instance_id=instance.uuid) def power_on(self, context, instance, network_info, block_device_info=None, accel_info=None): if instance.uuid in self.instances: self.instances[instance.uuid].state = power_state.RUNNING else: raise exception.InstanceNotFound(instance_id=instance.uuid) def trigger_crash_dump(self, instance): pass def soft_delete(self, instance): pass def restore(self, instance): pass def pause(self, instance): pass def unpause(self, instance): pass def suspend(self, context, instance): pass def resume(self, context, instance, network_info, block_device_info=None): pass def destroy(self, context, instance, network_info, block_device_info=None, destroy_disks=True, destroy_secrets=True): key = instance.uuid if key in self.instances: flavor = instance.flavor self.resources.release( vcpus=flavor.vcpus, mem=flavor.memory_mb, disk=flavor.root_gb) del self.instances[key] else: LOG.warning("Key '%(key)s' not in instances '%(inst)s'", {'key': key, 'inst': self.instances}, instance=instance) def cleanup(self, context, instance, network_info, block_device_info=None, destroy_disks=True, migrate_data=None, destroy_vifs=True, destroy_secrets=True): # cleanup() should not be called when the guest has not been destroyed. if instance.uuid in self.instances: raise exception.InstanceExists( "Instance %s has not been destroyed." % instance.uuid) def attach_volume(self, context, connection_info, instance, mountpoint, disk_bus=None, device_type=None, encryption=None): """Attach the disk to the instance at mountpoint using info.""" instance_name = instance.name if instance_name not in self._mounts: self._mounts[instance_name] = {} self._mounts[instance_name][mountpoint] = connection_info def detach_volume(self, context, connection_info, instance, mountpoint, encryption=None): """Detach the disk attached to the instance.""" try: del self._mounts[instance.name][mountpoint] except KeyError: pass def swap_volume(self, context, old_connection_info, new_connection_info, instance, mountpoint, resize_to): """Replace the disk attached to the instance.""" instance_name = instance.name if instance_name not in self._mounts: self._mounts[instance_name] = {} self._mounts[instance_name][mountpoint] = new_connection_info def extend_volume(self, context, connection_info, instance, requested_size): """Extend the disk attached to the instance.""" pass def attach_interface(self, context, instance, image_meta, vif): if vif['id'] in self._interfaces: raise exception.InterfaceAttachFailed( instance_uuid=instance.uuid) self._interfaces[vif['id']] = vif def detach_interface(self, context, instance, vif): try: del self._interfaces[vif['id']] except KeyError: raise exception.InterfaceDetachFailed( instance_uuid=instance.uuid) def get_info(self, instance, use_cache=True): if instance.uuid not in self.instances: raise exception.InstanceNotFound(instance_id=instance.uuid) i = self.instances[instance.uuid] return hardware.InstanceInfo(state=i.state) def get_diagnostics(self, instance): return {'cpu0_time': 17300000000, 'memory': 524288, 'vda_errors': -1, 'vda_read': 262144, 'vda_read_req': 112, 'vda_write': 5778432, 'vda_write_req': 488, 'vnet1_rx': 2070139, 'vnet1_rx_drop': 0, 'vnet1_rx_errors': 0, 'vnet1_rx_packets': 26701, 'vnet1_tx': 140208, 'vnet1_tx_drop': 0, 'vnet1_tx_errors': 0, 'vnet1_tx_packets': 662, } def get_instance_diagnostics(self, instance): diags = diagnostics_obj.Diagnostics( state='running', driver='libvirt', hypervisor='kvm', hypervisor_os='ubuntu', uptime=46664, config_drive=True) diags.add_cpu(id=0, time=17300000000, utilisation=15) diags.add_nic(mac_address='01:23:45:67:89:ab', rx_octets=2070139, rx_errors=100, rx_drop=200, rx_packets=26701, rx_rate=300, tx_octets=140208, tx_errors=400, tx_drop=500, tx_packets = 662, tx_rate=600) diags.add_disk(read_bytes=262144, read_requests=112, write_bytes=5778432, write_requests=488, errors_count=1) diags.memory_details = diagnostics_obj.MemoryDiagnostics( maximum=524288, used=0) return diags def get_all_volume_usage(self, context, compute_host_bdms): """Return usage info for volumes attached to vms on a given host. """ volusage = [] if compute_host_bdms: volusage = [{'volume': compute_host_bdms[0][ 'instance_bdms'][0]['volume_id'], 'instance': compute_host_bdms[0]['instance'], 'rd_bytes': 0, 'rd_req': 0, 'wr_bytes': 0, 'wr_req': 0}] return volusage def get_host_cpu_stats(self): stats = {'kernel': 5664160000000, 'idle': 1592705190000000, 'user': 26728850000000, 'iowait': 6121490000000} stats['frequency'] = 800 return stats def block_stats(self, instance, disk_id): return [0, 0, 0, 0, None] def get_console_output(self, context, instance): return 'FAKE CONSOLE OUTPUT\nANOTHER\nLAST LINE' def get_vnc_console(self, context, instance): return ctype.ConsoleVNC(internal_access_path='FAKE', host='fakevncconsole.com', port=6969) def get_spice_console(self, context, instance): return ctype.ConsoleSpice(internal_access_path='FAKE', host='fakespiceconsole.com', port=6969, tlsPort=6970) def get_serial_console(self, context, instance): return ctype.ConsoleSerial(internal_access_path='FAKE', host='fakerdpconsole.com', port=6969) def get_mks_console(self, context, instance): return ctype.ConsoleMKS(internal_access_path='FAKE', host='fakemksconsole.com', port=6969) def get_available_resource(self, nodename): """Updates compute manager resource info on ComputeNode table. Since we don't have a real hypervisor, pretend we have lots of disk and ram. """ cpu_info = collections.OrderedDict([ ('arch', 'x86_64'), ('model', 'Nehalem'), ('vendor', 'Intel'), ('features', ['pge', 'clflush']), ('topology', { 'cores': 1, 'threads': 1, 'sockets': 4, }), ]) if nodename not in self.get_available_nodes(): return {} host_status = self.host_status_base.copy() host_status.update(self.resources.dump()) host_status['hypervisor_hostname'] = nodename host_status['host_hostname'] = nodename host_status['host_name_label'] = nodename host_status['cpu_info'] = jsonutils.dumps(cpu_info) # NOTE(danms): Because the fake driver runs on the same host # in tests, potentially with multiple nodes, we need to # control our node uuids. Make sure we return a unique and # consistent uuid for each node we are responsible for to # avoid the persistent local node identity from taking over. host_status['uuid'] = str(getattr(uuids, 'node_%s' % nodename)) return host_status def update_provider_tree(self, provider_tree, nodename, allocations=None): # NOTE(yikun): If the inv record does not exists, the allocation_ratio # will use the CONF.xxx_allocation_ratio value if xxx_allocation_ratio # is set, and fallback to use the initial_xxx_allocation_ratio # otherwise. inv = provider_tree.data(nodename).inventory ratios = self._get_allocation_ratios(inv) inventory = { 'VCPU': { 'total': self.vcpus, 'min_unit': 1, 'max_unit': self.vcpus, 'step_size': 1, 'allocation_ratio': ratios[orc.VCPU], 'reserved': CONF.reserved_host_cpus, }, 'MEMORY_MB': { 'total': self.memory_mb, 'min_unit': 1, 'max_unit': self.memory_mb, 'step_size': 1, 'allocation_ratio': ratios[orc.MEMORY_MB], 'reserved': CONF.reserved_host_memory_mb, }, 'DISK_GB': { 'total': self.local_gb, 'min_unit': 1, 'max_unit': self.local_gb, 'step_size': 1, 'allocation_ratio': ratios[orc.DISK_GB], 'reserved': self._get_reserved_host_disk_gb_from_config(), }, } provider_tree.update_inventory(nodename, inventory) def get_instance_disk_info(self, instance, block_device_info=None): return def live_migration(self, context, instance, dest, post_method, recover_method, block_migration=False, migrate_data=None): post_method(context, instance, dest, block_migration, migrate_data) return def live_migration_force_complete(self, instance): return def live_migration_abort(self, instance): return def cleanup_live_migration_destination_check(self, context, dest_check_data): return def check_can_live_migrate_destination(self, context, instance, src_compute_info, dst_compute_info, block_migration=False, disk_over_commit=False): data = migrate_data.LibvirtLiveMigrateData() data.filename = 'fake' data.image_type = CONF.libvirt.images_type data.graphics_listen_addr_vnc = CONF.vnc.server_listen data.graphics_listen_addr_spice = CONF.spice.server_listen data.serial_listen_addr = None # Notes(eliqiao): block_migration and disk_over_commit are not # nullable, so just don't set them if they are None if block_migration is not None: data.block_migration = block_migration if disk_over_commit is not None: data.disk_over_commit = disk_over_commit data.disk_available_mb = 100000 data.is_shared_block_storage = True data.is_shared_instance_path = True return data def check_can_live_migrate_source(self, context, instance, dest_check_data, block_device_info=None): return dest_check_data def finish_migration(self, context, migration, instance, disk_info, network_info, image_meta, resize_instance, allocations, block_device_info=None, power_on=True): injected_files = admin_password = None # Finish migration is just like spawning the guest on a destination # host during resize/cold migrate, so reuse the spawn() fake to # claim resources and track the instance on this "hypervisor". self.spawn(context, instance, image_meta, injected_files, admin_password, allocations, block_device_info=block_device_info, power_on=power_on) def confirm_migration(self, context, migration, instance, network_info): # Confirm migration cleans up the guest from the source host so just # destroy the guest to remove it from the list of tracked instances # unless it is a same-host resize. if migration.source_compute != migration.dest_compute: self.destroy(context, instance, network_info) def pre_live_migration(self, context, instance, block_device_info, network_info, disk_info, migrate_data): return migrate_data def rollback_live_migration_at_destination(self, context, instance, network_info, block_device_info, destroy_disks=True, migrate_data=None): return def _test_remove_vm(self, instance_uuid): """Removes the named VM, as if it crashed. For testing.""" self.instances.pop(instance_uuid) def host_power_action(self, action): """Reboots, shuts down or powers up the host.""" return action def host_maintenance_mode(self, host, mode): """Start/Stop host maintenance window. On start, it triggers guest VMs evacuation. """ if not mode: return 'off_maintenance' return 'on_maintenance' def set_host_enabled(self, enabled): """Sets the specified host's ability to accept new instances.""" if enabled: return 'enabled' return 'disabled' def get_volume_connector(self, instance): return {'ip': CONF.my_block_storage_ip, 'initiator': 'fake', 'host': self._host} def get_available_nodes(self, refresh=False): return self._nodes def get_nodenames_by_uuid(self, refresh=False): return {str(getattr(uuids, 'node_%s' % n)): n for n in self.get_available_nodes()} def instance_on_disk(self, instance): return False def quiesce(self, context, instance, image_meta): pass def unquiesce(self, context, instance, image_meta): pass class FakeVirtAPI(virtapi.VirtAPI): @contextlib.contextmanager def wait_for_instance_event(self, instance, event_names, deadline=300, error_callback=None): # NOTE(danms): Don't actually wait for any events, just # fall through yield def exit_wait_early(self, events): # We never wait, so there is nothing to exit early pass def update_compute_provider_status(self, context, rp_uuid, enabled): pass class SmallFakeDriver(FakeDriver): # The api samples expect specific cpu memory and disk sizes. In order to # allow the FakeVirt driver to be used outside of the unit tests, provide # a separate class that has the values expected by the api samples. So # instead of requiring new samples every time those # values are adjusted allow them to be overwritten here. vcpus = 2 memory_mb = 8192 local_gb = 1028 class MediumFakeDriver(FakeDriver): # Fake driver that has enough resources to host more than one instance # but not that much that cannot be exhausted easily vcpus = 10 memory_mb = 8192 local_gb = 1028 class SameHostColdMigrateDriver(MediumFakeDriver): """MediumFakeDriver variant that supports same-host cold migrate.""" capabilities = dict(FakeDriver.capabilities, supports_migrate_to_same_host=True) class RescueBFVDriver(MediumFakeDriver): capabilities = dict(FakeDriver.capabilities, supports_bfv_rescue=True) class PowerUpdateFakeDriver(SmallFakeDriver): # A specific fake driver for the power-update external event testing. def __init__(self, virtapi): super(PowerUpdateFakeDriver, self).__init__(virtapi=None) self.driver = ironic.IronicDriver(virtapi=virtapi) def power_update_event(self, instance, target_power_state): """Update power state of the specified instance in the nova DB.""" self.driver.power_update_event(instance, target_power_state) class MediumFakeDriverWithNestedCustomResources(MediumFakeDriver): # A MediumFakeDriver variant that also reports CUSTOM_MAGIC resources on # a nested resource provider vcpus = 10 memory_mb = 8192 local_gb = 1028 child_resources = { 'CUSTOM_MAGIC': { 'total': 10, 'reserved': 0, 'min_unit': 1, 'max_unit': 10, 'step_size': 1, 'allocation_ratio': 1, } } def update_provider_tree(self, provider_tree, nodename, allocations=None): super( MediumFakeDriverWithNestedCustomResources, self).update_provider_tree( provider_tree, nodename, allocations=allocations) if not provider_tree.exists(nodename + '-child'): provider_tree.new_child(name=nodename + '-child', parent=nodename) provider_tree.update_inventory(nodename + '-child', self.child_resources) class FakeFinishMigrationFailDriver(FakeDriver): """FakeDriver variant that will raise an exception from finish_migration""" def finish_migration(self, *args, **kwargs): raise exception.VirtualInterfaceCreateException() class PredictableNodeUUIDDriver(SmallFakeDriver): """SmallFakeDriver variant that reports a predictable node uuid in get_available_resource, like IronicDriver. """ def get_available_resource(self, nodename): resources = super( PredictableNodeUUIDDriver, self).get_available_resource(nodename) # This is used in ComputeNode.update_from_virt_driver which is called # from the ResourceTracker when creating a ComputeNode. resources['uuid'] = str(uuid.uuid5(uuid.NAMESPACE_DNS, nodename)) return resources class FakeRescheduleDriver(FakeDriver): """FakeDriver derivative that triggers a reschedule on the first spawn attempt. This is expected to only be used in tests that have more than one compute service. """ # dict, keyed by instance uuid, mapped to a boolean telling us if the # instance has been rescheduled or not rescheduled = {} def spawn(self, context, instance, image_meta, injected_files, admin_password, allocations, network_info=None, block_device_info=None, power_on=True, accel_info=None): if not self.rescheduled.get(instance.uuid, False): # We only reschedule on the first time something hits spawn(). self.rescheduled[instance.uuid] = True raise exception.ComputeResourcesUnavailable( reason='FakeRescheduleDriver') super(FakeRescheduleDriver, self).spawn( context, instance, image_meta, injected_files, admin_password, allocations, network_info, block_device_info, power_on) class FakeRescheduleDriverWithNestedCustomResources( FakeRescheduleDriver, MediumFakeDriverWithNestedCustomResources): pass class FakeBuildAbortDriver(FakeDriver): """FakeDriver derivative that always fails on spawn() with a BuildAbortException so no reschedule is attempted. """ def spawn(self, context, instance, image_meta, injected_files, admin_password, allocations, network_info=None, block_device_info=None, power_on=True, accel_info=None): raise exception.BuildAbortException( instance_uuid=instance.uuid, reason='FakeBuildAbortDriver') class FakeBuildAbortDriverWithNestedCustomResources( FakeBuildAbortDriver, MediumFakeDriverWithNestedCustomResources): pass class FakeUnshelveSpawnFailDriver(FakeDriver): """FakeDriver derivative that always fails on spawn() with a VirtualInterfaceCreateException when unshelving an offloaded instance. """ def spawn(self, context, instance, image_meta, injected_files, admin_password, allocations, network_info=None, block_device_info=None, power_on=True, accel_info=None): if instance.vm_state == vm_states.SHELVED_OFFLOADED: raise exception.VirtualInterfaceCreateException( 'FakeUnshelveSpawnFailDriver') # Otherwise spawn normally during the initial build. super(FakeUnshelveSpawnFailDriver, self).spawn( context, instance, image_meta, injected_files, admin_password, allocations, network_info, block_device_info, power_on) class FakeUnshelveSpawnFailDriverWithNestedCustomResources( FakeUnshelveSpawnFailDriver, MediumFakeDriverWithNestedCustomResources): pass class FakeLiveMigrateDriver(FakeDriver): """FakeDriver derivative to handle force_complete and abort calls. This module serves those tests that need to abort or force-complete the live migration, thus the live migration will never be finished without the force_complete_migration or delete_migration API calls. """ def __init__(self, virtapi, read_only=False): super(FakeLiveMigrateDriver, self).__init__(virtapi, read_only) self._migrating = True self._abort_migration = True def live_migration(self, context, instance, dest, post_method, recover_method, block_migration=False, migrate_data=None): self._abort_migration = False self._migrating = True count = 0 while self._migrating and count < 50: time.sleep(0.1) count = count + 1 if self._abort_migration: recover_method(context, instance, dest, migrate_data, migration_status='cancelled') else: post_method(context, instance, dest, block_migration, migrate_data) def live_migration_force_complete(self, instance): self._migrating = False if instance.uuid in self.instances: del self.instances[instance.uuid] def live_migration_abort(self, instance): self._abort_migration = True self._migrating = False def post_live_migration(self, context, instance, block_device_info, migrate_data=None): # Runs on the source host, called from # ComputeManager._post_live_migration so just delete the instance # from being tracked on the source host. self.destroy(context, instance, network_info=None, block_device_info=block_device_info) class FakeLiveMigrateDriverWithNestedCustomResources( FakeLiveMigrateDriver, MediumFakeDriverWithNestedCustomResources): pass class FakeDriverWithPciResources(SmallFakeDriver): """NOTE: this driver provides symmetric compute nodes. Each compute will have the same resources with the same addresses. It is dangerous as using this driver can hide issues when in an asymmetric environment nova fails to update entities according to the host specific addresses (e.g. pci_slot of the neutron port bindings). The current non virt driver specific functional test environment has many shortcomings making it really hard to simulate host specific virt drivers. 1) The virt driver is instantiated by the service logic from the name of the driver class. This makes passing input to the driver instance from the test at init time pretty impossible. This could be solved with some fixtures around nova.virt.driver.load_compute_driver() 2) The compute service access the hypervisor not only via the virt interface but also reads the sysfs of the host. So simply providing a fake virt driver instance is not enough to isolate simulated compute services that are running on the same host. Also these low level sysfs reads are not having host specific information in the call params. So simply mocking the low level call does not give a way to provide host specific return values. 3) CONF is global, and it is read dynamically by the driver. So providing host specific CONF to driver instances without race conditions between the drivers are extremely hard especially if periodic tasks are enabled. The libvirt based functional test env under nova.tests.functional.libvirt has better support to create asymmetric environments. So please consider using that if possible instead. """ PCI_ADDR_PF1 = '0000:01:00.0' PCI_ADDR_PF1_VF1 = '0000:01:00.1' PCI_ADDR_PF2 = '0000:02:00.0' PCI_ADDR_PF2_VF1 = '0000:02:00.1' PCI_ADDR_PF3 = '0000:03:00.0' PCI_ADDR_PF3_VF1 = '0000:03:00.1' # NOTE(gibi): Always use this fixture along with the # FakeDriverWithPciResources to make the necessary configuration for the # driver. class FakeDriverWithPciResourcesConfigFixture(fixtures.Fixture): def setUp(self): super(FakeDriverWithPciResources. FakeDriverWithPciResourcesConfigFixture, self).setUp() # Set device_spec before the compute node starts to match # with the PCI devices reported by this fake driver. # NOTE(gibi): 0000:01:00 is tagged to physnet1 and therefore not a # match based on physnet to our sriov port # 'port_with_sriov_resource_request' as the network of that port # points to physnet2 with the attribute # 'provider:physical_network'. Nova pci handling already enforces # this rule. # # 0000:02:00 and 0000:03:00 are both tagged to physnet2 and # therefore a good match for our sriov port based on physnet. # Having two PFs on the same physnet will allow us to test the # placement allocation - physical allocation matching based on the # bandwidth allocation in the future. CONF.set_override('device_spec', override=[ jsonutils.dumps( { "address": { "domain": "0000", "bus": "01", "slot": "00", "function": ".*"}, "physical_network": "physnet1", } ), jsonutils.dumps( { "address": { "domain": "0000", "bus": "02", "slot": "00", "function": ".*"}, "physical_network": "physnet2", } ), jsonutils.dumps( { "address": { "domain": "0000", "bus": "03", "slot": "00", "function": ".*"}, "physical_network": "physnet2", } ), ], group='pci') # These mocks should be removed after bug # https://bugs.launchpad.net/nova/+bug/1961587 has been fixed and # every SRIOV device related information is transferred through the # virt driver and the PciDevice object instead of queried with # sysfs calls by the network.neutron.API code. self.useFixture(fixtures.MockPatch( 'nova.pci.utils.get_mac_by_pci_address', return_value='52:54:00:1e:59:c6')) self.useFixture(fixtures.MockPatch( 'nova.pci.utils.get_vf_num_by_pci_address', return_value=1)) def get_available_resource(self, nodename): host_status = super( FakeDriverWithPciResources, self).get_available_resource(nodename) # 01:00.0 - PF - ens1 # |---- 01:00.1 - VF # # 02:00.0 - PF - ens2 # |---- 02:00.1 - VF # # 03:00.0 - PF - ens3 # |---- 03:00.1 - VF host_status['pci_passthrough_devices'] = jsonutils.dumps([ { 'address': self.PCI_ADDR_PF1, 'product_id': 'fake-product_id', 'vendor_id': 'fake-vendor_id', 'status': 'available', 'dev_type': 'type-PF', 'parent_addr': None, 'numa_node': 0, 'label': 'fake-label', }, { 'address': self.PCI_ADDR_PF1_VF1, 'product_id': 'fake-product_id', 'vendor_id': 'fake-vendor_id', 'status': 'available', 'dev_type': 'type-VF', 'parent_addr': self.PCI_ADDR_PF1, 'numa_node': 0, 'label': 'fake-label', "parent_ifname": self._host + "-ens1", }, { 'address': self.PCI_ADDR_PF2, 'product_id': 'fake-product_id', 'vendor_id': 'fake-vendor_id', 'status': 'available', 'dev_type': 'type-PF', 'parent_addr': None, 'numa_node': 0, 'label': 'fake-label', }, { 'address': self.PCI_ADDR_PF2_VF1, 'product_id': 'fake-product_id', 'vendor_id': 'fake-vendor_id', 'status': 'available', 'dev_type': 'type-VF', 'parent_addr': self.PCI_ADDR_PF2, 'numa_node': 0, 'label': 'fake-label', "parent_ifname": self._host + "-ens2", }, { 'address': self.PCI_ADDR_PF3, 'product_id': 'fake-product_id', 'vendor_id': 'fake-vendor_id', 'status': 'available', 'dev_type': 'type-PF', 'parent_addr': None, 'numa_node': 0, 'label': 'fake-label', }, { 'address': self.PCI_ADDR_PF3_VF1, 'product_id': 'fake-product_id', 'vendor_id': 'fake-vendor_id', 'status': 'available', 'dev_type': 'type-VF', 'parent_addr': self.PCI_ADDR_PF3, 'numa_node': 0, 'label': 'fake-label', "parent_ifname": self._host + "-ens3", }, ]) return host_status class FakeLiveMigrateDriverWithPciResources( FakeLiveMigrateDriver, FakeDriverWithPciResources): """FakeDriver derivative to handle force_complete and abort calls. This module serves those tests that need to abort or force-complete the live migration, thus the live migration will never be finished without the force_complete_migration or delete_migration API calls. """ class FakeDriverWithCaching(FakeDriver): def __init__(self, *a, **k): super(FakeDriverWithCaching, self).__init__(*a, **k) self.cached_images = set() def cache_image(self, context, image_id): if image_id in self.cached_images: return False else: self.cached_images.add(image_id) return True class EphEncryptionDriver(MediumFakeDriver): capabilities = dict( FakeDriver.capabilities, supports_ephemeral_encryption=True) class EphEncryptionDriverLUKS(MediumFakeDriver): capabilities = dict( FakeDriver.capabilities, supports_ephemeral_encryption=True, supports_ephemeral_encryption_luks=True) class EphEncryptionDriverPLAIN(MediumFakeDriver): capabilities = dict( FakeDriver.capabilities, supports_ephemeral_encryption=True, supports_ephemeral_encryption_plain=True) class FakeDriverWithoutFakeNodes(FakeDriver): """FakeDriver that behaves like a real single-node driver. This behaves like a real virt driver from the perspective of its nodes, with a stable nodename and use of the global node identity stuff to provide a stable node UUID. """ def get_available_resource(self, nodename): resources = super().get_available_resource(nodename) resources['uuid'] = nova.virt.node.get_local_node_uuid() return resources def get_nodenames_by_uuid(self, refresh=False): return { nova.virt.node.get_local_node_uuid(): self.get_available_nodes()[0] }