The nova.virt.fake Module

A fake (in-memory) hypervisor+api.

Allows nova testing w/o a hypervisor. This module also documents the semantics of real hypervisor connections.

class FakeDriver(virtapi, read_only=False)

Bases: nova.virt.driver.ComputeDriver

attach_interface(instance, image_meta, vif)

attach_volume(context, connection_info, instance, mountpoint, disk_bus=None, device_type=None, encryption=None)

Attach the disk to the instance at mountpoint using info.

block_stats(instance, disk_id)

capabilities = {'has_imagecache': True, 'supports_migrate_to_same_host': True, 'supports_recreate': True}

check_can_live_migrate_destination(context, instance, src_compute_info, dst_compute_info, block_migration=False, disk_over_commit=False)

check_can_live_migrate_destination_cleanup(context, dest_check_data)

check_can_live_migrate_source(context, instance, dest_check_data, block_device_info=None)

cleanup(context, instance, network_info, block_device_info=None, destroy_disks=True, migrate_data=None, destroy_vifs=True)

confirm_migration(migration, instance, network_info)

destroy(context, instance, network_info, block_device_info=None, destroy_disks=True, migrate_data=None)

detach_interface(instance, vif)

detach_volume(connection_info, instance, mountpoint, encryption=None)

Detach the disk attached to the instance.

ensure_filtering_rules_for_instance(instance, network_info)

finish_migration(context, migration, instance, disk_info, network_info, image_meta, resize_instance, block_device_info=None, power_on=True)

finish_revert_migration(context, instance, network_info, block_device_info=None, power_on=True)

get_all_bw_counters(instances)

Return bandwidth usage counters for each interface on each running VM.

get_all_volume_usage(context, compute_host_bdms)

Return usage info for volumes attached to vms on a given host.

get_available_nodes(refresh=False)

get_available_resource(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.

get_console_output(context, instance)

get_console_pool_info(console_type)

get_diagnostics(instance)

get_host_cpu_stats()

get_host_ip_addr()

get_info(instance)

get_instance_diagnostics(instance)

get_instance_disk_info(instance, block_device_info=None)

get_mks_console(context, instance)

get_rdp_console(context, instance)

get_serial_console(context, instance)

get_spice_console(context, instance)

get_vnc_console(context, instance)

get_volume_connector(instance)

host_maintenance_mode(host, mode)

Start/Stop host maintenance window. On start, it triggers guest VMs evacuation.

host_power_action(action)

Reboots, shuts down or powers up the host.

init_host(host)

inject_file(instance, b64_path, b64_contents)

instance_on_disk(instance)

list_instance_uuids()

list_instances()

live_migration(context, instance, dest, post_method, recover_method, block_migration=False, migrate_data=None)

live_migration_abort(instance)

live_migration_force_complete(instance)

local_gb = 600000

Fake hypervisor driver.

memory_mb = 800000

migrate_disk_and_power_off(context, instance, dest, flavor, network_info, block_device_info=None, timeout=0, retry_interval=0)

pause(instance)

plug_vifs(instance, network_info)

Plug VIFs into networks.

poll_rebooting_instances(timeout, instances)

post_live_migration_at_destination(context, instance, network_info, block_migration=False, block_device_info=None)

power_off(instance, timeout=0, retry_interval=0)

power_on(context, instance, network_info, block_device_info=None)

pre_live_migration(context, instance, block_device_info, network_info, disk_info, migrate_data=None)

quiesce(context, instance, image_meta)

reboot(context, instance, network_info, reboot_type, block_device_info=None, bad_volumes_callback=None)

refresh_instance_security_rules(instance)

refresh_security_group_rules(security_group_id)

rescue(context, instance, network_info, image_meta, rescue_password)

restore(instance)

resume(context, instance, network_info, block_device_info=None)

resume_state_on_host_boot(context, instance, network_info, block_device_info=None)

set_admin_password(instance, new_pass)

set_host_enabled(enabled)

Sets the specified host’s ability to accept new instances.

snapshot(context, instance, image_id, update_task_state)

soft_delete(instance)

spawn(context, instance, image_meta, injected_files, admin_password, network_info=None, block_device_info=None)

suspend(context, instance)

swap_volume(old_connection_info, new_connection_info, instance, mountpoint, resize_to)

Replace the disk attached to the instance.

trigger_crash_dump(instance)

unfilter_instance(instance, network_info)

unpause(instance)

unplug_vifs(instance, network_info)

Unplug VIFs from networks.

unquiesce(context, instance, image_meta)

unrescue(instance, network_info)

vcpus = 1000

class FakeInstance(name, state, uuid)

Bases: object

class FakeVirtAPI

Bases: nova.virt.virtapi.VirtAPI

wait_for_instance_event(*args, **kwds)

class Resources(vcpus=8, memory_mb=8000, local_gb=500)

Bases: object

claim(vcpus=0, mem=0, disk=0)

dump()

local_gb = 0

local_gb_used = 0

memory_mb = 0

memory_mb_used = 0

release(vcpus=0, mem=0, disk=0)

vcpus = 0

vcpus_used = 0

class SmallFakeDriver(virtapi, read_only=False)

Bases: nova.virt.fake.FakeDriver

local_gb = 1028

memory_mb = 8192

vcpus = 1

restore_nodes()

Resets FakeDriver’s node list modified by set_nodes().

Usually called from tearDown().

set_nodes(nodes)

Sets FakeDriver’s node.list.

It has effect on the following methods:

get_available_nodes() get_available_resource

To restore the change, call restore_nodes()