/
migrate_data.py
503 lines (443 loc) · 20.9 KB
/
migrate_data.py
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# Copyright 2015 Red Hat, 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.
import copy
from oslo_log import log
from oslo_serialization import jsonutils
from oslo_utils import versionutils
from nova import exception
from nova import objects
from nova.objects import base as obj_base
from nova.objects import fields
LOG = log.getLogger(__name__)
@obj_base.NovaObjectRegistry.register
class VIFMigrateData(obj_base.NovaObject):
# Version 1.0: Initial version
VERSION = '1.0'
# The majority of the fields here represent a port binding on the
# **destination** host during a live migration. The vif_type, among
# other fields, could be different from the existing binding on the
# source host, which is represented by the "source_vif" field.
fields = {
'port_id': fields.StringField(),
'vnic_type': fields.StringField(), # TODO(sean-k-mooney): make enum?
'vif_type': fields.StringField(),
# vif_details is a dict whose contents are dependent on the vif_type
# and can be any number of types for the values, so we just store it
# as a serialized dict
'vif_details_json': fields.StringField(),
# profile is in the same random dict of terrible boat as vif_details
# so it's stored as a serialized json string
'profile_json': fields.StringField(),
'host': fields.StringField(),
# The source_vif attribute is a copy of the VIF network model
# representation of the port on the source host which can be used
# for filling in blanks about the VIF (port) when building a
# configuration reference for the destination host.
# NOTE(mriedem): This might not be sufficient based on how the
# destination host is configured for all vif types. See the note in
# the libvirt driver here: https://review.openstack.org/#/c/551370/
# 29/nova/virt/libvirt/driver.py@7036
'source_vif': fields.Field(fields.NetworkVIFModel()),
}
@property
def vif_details(self):
return jsonutils.loads(self.vif_details_json)
@vif_details.setter
def vif_details(self, vif_details_dict):
self.vif_details_json = jsonutils.dumps(vif_details_dict)
@property
def profile(self):
return jsonutils.loads(self.profile_json)
@profile.setter
def profile(self, profile_dict):
self.profile_json = jsonutils.dumps(profile_dict)
def get_dest_vif(self):
"""Get a destination VIF representation of this object.
This method takes the source_vif and updates it to include the
destination host port binding information using the other fields
on this object.
:return: nova.network.model.VIF object
"""
if 'source_vif' not in self:
raise exception.ObjectActionError(
action='get_dest_vif', reason='source_vif is not set')
vif = copy.deepcopy(self.source_vif)
vif['type'] = self.vif_type
vif['vnic_type'] = self.vnic_type
vif['profile'] = self.profile
vif['details'] = self.vif_details
return vif
@obj_base.NovaObjectRegistry.register_if(False)
class LiveMigrateData(obj_base.NovaObject):
# Version 1.0: Initial version
# Version 1.1: Added old_vol_attachment_ids field.
# Version 1.2: Added wait_for_vif_plugged
# Version 1.3: Added vifs field.
VERSION = '1.3'
fields = {
'is_volume_backed': fields.BooleanField(),
'migration': fields.ObjectField('Migration'),
# old_vol_attachment_ids is a dict used to store the old attachment_ids
# for each volume so they can be restored on a migration rollback. The
# key is the volume_id, and the value is the attachment_id.
'old_vol_attachment_ids': fields.DictOfStringsField(),
# wait_for_vif_plugged is set in pre_live_migration on the destination
# compute host based on the [compute]/live_migration_wait_for_vif_plug
# config option value; a default value is not set here since the
# default for the config option may change in the future
'wait_for_vif_plugged': fields.BooleanField(),
'vifs': fields.ListOfObjectsField('VIFMigrateData'),
}
def to_legacy_dict(self, pre_migration_result=False):
legacy = {}
if self.obj_attr_is_set('is_volume_backed'):
legacy['is_volume_backed'] = self.is_volume_backed
if self.obj_attr_is_set('migration'):
legacy['migration'] = self.migration
if pre_migration_result:
legacy['pre_live_migration_result'] = {}
return legacy
def from_legacy_dict(self, legacy):
if 'is_volume_backed' in legacy:
self.is_volume_backed = legacy['is_volume_backed']
if 'migration' in legacy:
self.migration = legacy['migration']
@classmethod
def detect_implementation(cls, legacy_dict):
if 'instance_relative_path' in legacy_dict:
obj = LibvirtLiveMigrateData()
elif 'image_type' in legacy_dict:
obj = LibvirtLiveMigrateData()
elif 'migrate_data' in legacy_dict:
obj = XenapiLiveMigrateData()
else:
obj = LiveMigrateData()
obj.from_legacy_dict(legacy_dict)
return obj
@obj_base.NovaObjectRegistry.register
class LibvirtLiveMigrateBDMInfo(obj_base.NovaObject):
# VERSION 1.0 : Initial version
# VERSION 1.1 : Added encryption_secret_uuid for tracking volume secret
# uuid created on dest during migration with encrypted vols.
VERSION = '1.1'
fields = {
# FIXME(danms): some of these can be enums?
'serial': fields.StringField(),
'bus': fields.StringField(),
'dev': fields.StringField(),
'type': fields.StringField(),
'format': fields.StringField(nullable=True),
'boot_index': fields.IntegerField(nullable=True),
'connection_info_json': fields.StringField(),
'encryption_secret_uuid': fields.UUIDField(nullable=True),
}
def obj_make_compatible(self, primitive, target_version):
super(LibvirtLiveMigrateBDMInfo, self).obj_make_compatible(
primitive, target_version)
target_version = versionutils.convert_version_to_tuple(target_version)
if target_version < (1, 1) and 'encryption_secret_uuid' in primitive:
del primitive['encryption_secret_uuid']
# NOTE(danms): We don't have a connection_info object right
# now, and instead mostly store/pass it as JSON that we're
# careful with. When we get a connection_info object in the
# future, we should use it here, so make this easy to convert
# for later.
@property
def connection_info(self):
return jsonutils.loads(self.connection_info_json)
@connection_info.setter
def connection_info(self, info):
self.connection_info_json = jsonutils.dumps(info)
def as_disk_info(self):
info_dict = {
'dev': self.dev,
'bus': self.bus,
'type': self.type,
}
if self.obj_attr_is_set('format') and self.format:
info_dict['format'] = self.format
if self.obj_attr_is_set('boot_index') and self.boot_index is not None:
info_dict['boot_index'] = str(self.boot_index)
return info_dict
@obj_base.NovaObjectRegistry.register
class LibvirtLiveMigrateData(LiveMigrateData):
# Version 1.0: Initial version
# Version 1.1: Added target_connect_addr
# Version 1.2: Added 'serial_listen_ports' to allow live migration with
# serial console.
# Version 1.3: Added 'supported_perf_events'
# Version 1.4: Added old_vol_attachment_ids
# Version 1.5: Added src_supports_native_luks
# Version 1.6: Added wait_for_vif_plugged
# Version 1.7: Added dst_wants_file_backed_memory
# Version 1.8: Added file_backed_memory_discard
# Version 1.9: Inherited vifs from LiveMigrateData
VERSION = '1.9'
fields = {
'filename': fields.StringField(),
# FIXME: image_type should be enum?
'image_type': fields.StringField(),
'block_migration': fields.BooleanField(),
'disk_over_commit': fields.BooleanField(),
'disk_available_mb': fields.IntegerField(nullable=True),
'is_shared_instance_path': fields.BooleanField(),
'is_shared_block_storage': fields.BooleanField(),
'instance_relative_path': fields.StringField(),
'graphics_listen_addr_vnc': fields.IPAddressField(nullable=True),
'graphics_listen_addr_spice': fields.IPAddressField(nullable=True),
'serial_listen_addr': fields.StringField(nullable=True),
'serial_listen_ports': fields.ListOfIntegersField(),
'bdms': fields.ListOfObjectsField('LibvirtLiveMigrateBDMInfo'),
'target_connect_addr': fields.StringField(nullable=True),
'supported_perf_events': fields.ListOfStringsField(),
'src_supports_native_luks': fields.BooleanField(),
'dst_wants_file_backed_memory': fields.BooleanField(),
# file_backed_memory_discard is ignored unless
# dst_wants_file_backed_memory is set
'file_backed_memory_discard': fields.BooleanField(),
}
def obj_make_compatible(self, primitive, target_version):
super(LibvirtLiveMigrateData, self).obj_make_compatible(
primitive, target_version)
target_version = versionutils.convert_version_to_tuple(target_version)
if target_version < (1, 9) and 'vifs' in primitive:
del primitive['vifs']
if target_version < (1, 8):
if 'file_backed_memory_discard' in primitive:
del primitive['file_backed_memory_discard']
if target_version < (1, 7):
if 'dst_wants_file_backed_memory' in primitive:
del primitive['dst_wants_file_backed_memory']
if target_version < (1, 6) and 'wait_for_vif_plugged' in primitive:
del primitive['wait_for_vif_plugged']
if target_version < (1, 5):
if 'src_supports_native_luks' in primitive:
del primitive['src_supports_native_luks']
if target_version < (1, 4):
if 'old_vol_attachment_ids' in primitive:
del primitive['old_vol_attachment_ids']
if target_version < (1, 3):
if 'supported_perf_events' in primitive:
del primitive['supported_perf_events']
if target_version < (1, 2):
if 'serial_listen_ports' in primitive:
del primitive['serial_listen_ports']
if target_version < (1, 1) and 'target_connect_addr' in primitive:
del primitive['target_connect_addr']
def _bdms_to_legacy(self, legacy):
if not self.obj_attr_is_set('bdms'):
return
legacy['volume'] = {}
for bdmi in self.bdms:
legacy['volume'][bdmi.serial] = {
'disk_info': bdmi.as_disk_info(),
'connection_info': bdmi.connection_info}
def _bdms_from_legacy(self, legacy_pre_result):
self.bdms = []
volume = legacy_pre_result.get('volume', {})
for serial in volume:
vol = volume[serial]
bdmi = objects.LibvirtLiveMigrateBDMInfo(serial=serial)
bdmi.connection_info = vol['connection_info']
bdmi.bus = vol['disk_info']['bus']
bdmi.dev = vol['disk_info']['dev']
bdmi.type = vol['disk_info']['type']
if 'format' in vol:
bdmi.format = vol['disk_info']['format']
if 'boot_index' in vol:
bdmi.boot_index = int(vol['disk_info']['boot_index'])
self.bdms.append(bdmi)
def to_legacy_dict(self, pre_migration_result=False):
LOG.debug('Converting to legacy: %s', self)
legacy = super(LibvirtLiveMigrateData, self).to_legacy_dict()
keys = (set(self.fields.keys()) -
set(LiveMigrateData.fields.keys()) - {'bdms'})
legacy.update({k: getattr(self, k) for k in keys
if self.obj_attr_is_set(k)})
graphics_vnc = legacy.pop('graphics_listen_addr_vnc', None)
graphics_spice = legacy.pop('graphics_listen_addr_spice', None)
transport_target = legacy.pop('target_connect_addr', None)
live_result = {
'graphics_listen_addrs': {
'vnc': graphics_vnc and str(graphics_vnc),
'spice': graphics_spice and str(graphics_spice),
},
'serial_listen_addr': legacy.pop('serial_listen_addr', None),
'target_connect_addr': transport_target,
}
if pre_migration_result:
legacy['pre_live_migration_result'] = live_result
self._bdms_to_legacy(live_result)
LOG.debug('Legacy result: %s', legacy)
return legacy
def from_legacy_dict(self, legacy):
LOG.debug('Converting legacy dict to obj: %s', legacy)
super(LibvirtLiveMigrateData, self).from_legacy_dict(legacy)
keys = set(self.fields.keys()) - set(LiveMigrateData.fields.keys())
for k in keys - {'bdms'}:
if k in legacy:
setattr(self, k, legacy[k])
if 'pre_live_migration_result' in legacy:
pre_result = legacy['pre_live_migration_result']
self.graphics_listen_addr_vnc = \
pre_result['graphics_listen_addrs'].get('vnc')
self.graphics_listen_addr_spice = \
pre_result['graphics_listen_addrs'].get('spice')
self.target_connect_addr = pre_result.get('target_connect_addr')
if 'serial_listen_addr' in pre_result:
self.serial_listen_addr = pre_result['serial_listen_addr']
self._bdms_from_legacy(pre_result)
LOG.debug('Converted object: %s', self)
def is_on_shared_storage(self):
return self.is_shared_block_storage or self.is_shared_instance_path
@obj_base.NovaObjectRegistry.register
class XenapiLiveMigrateData(LiveMigrateData):
# Version 1.0: Initial version
# Version 1.1: Added vif_uuid_map
# Version 1.2: Added old_vol_attachment_ids
# Version 1.3: Added wait_for_vif_plugged
# Version 1.4: Inherited vifs from LiveMigrateData
VERSION = '1.4'
fields = {
'block_migration': fields.BooleanField(nullable=True),
'destination_sr_ref': fields.StringField(nullable=True),
'migrate_send_data': fields.DictOfStringsField(nullable=True),
'sr_uuid_map': fields.DictOfStringsField(),
'kernel_file': fields.StringField(),
'ramdisk_file': fields.StringField(),
'vif_uuid_map': fields.DictOfStringsField(),
}
def to_legacy_dict(self, pre_migration_result=False):
legacy = super(XenapiLiveMigrateData, self).to_legacy_dict()
if self.obj_attr_is_set('block_migration'):
legacy['block_migration'] = self.block_migration
if self.obj_attr_is_set('migrate_send_data'):
legacy['migrate_data'] = {
'migrate_send_data': self.migrate_send_data,
'destination_sr_ref': self.destination_sr_ref,
}
live_result = {
'sr_uuid_map': ('sr_uuid_map' in self and self.sr_uuid_map
or {}),
'vif_uuid_map': ('vif_uuid_map' in self and self.vif_uuid_map
or {}),
}
if pre_migration_result:
legacy['pre_live_migration_result'] = live_result
return legacy
def from_legacy_dict(self, legacy):
super(XenapiLiveMigrateData, self).from_legacy_dict(legacy)
if 'block_migration' in legacy:
self.block_migration = legacy['block_migration']
else:
self.block_migration = False
if 'migrate_data' in legacy:
self.migrate_send_data = \
legacy['migrate_data']['migrate_send_data']
self.destination_sr_ref = \
legacy['migrate_data']['destination_sr_ref']
if 'pre_live_migration_result' in legacy:
self.sr_uuid_map = \
legacy['pre_live_migration_result']['sr_uuid_map']
self.vif_uuid_map = \
legacy['pre_live_migration_result'].get('vif_uuid_map', {})
def obj_make_compatible(self, primitive, target_version):
super(XenapiLiveMigrateData, self).obj_make_compatible(
primitive, target_version)
target_version = versionutils.convert_version_to_tuple(target_version)
if target_version < (1, 4) and 'vifs' in primitive:
del primitive['vifs']
if target_version < (1, 3) and 'wait_for_vif_plugged' in primitive:
del primitive['wait_for_vif_plugged']
if target_version < (1, 2):
if 'old_vol_attachment_ids' in primitive:
del primitive['old_vol_attachment_ids']
if target_version < (1, 1):
if 'vif_uuid_map' in primitive:
del primitive['vif_uuid_map']
@obj_base.NovaObjectRegistry.register
class HyperVLiveMigrateData(LiveMigrateData):
# Version 1.0: Initial version
# Version 1.1: Added is_shared_instance_path
# Version 1.2: Added old_vol_attachment_ids
# Version 1.3: Added wait_for_vif_plugged
# Version 1.4: Inherited vifs from LiveMigrateData
VERSION = '1.4'
fields = {'is_shared_instance_path': fields.BooleanField()}
def obj_make_compatible(self, primitive, target_version):
super(HyperVLiveMigrateData, self).obj_make_compatible(
primitive, target_version)
target_version = versionutils.convert_version_to_tuple(target_version)
if target_version < (1, 4) and 'vifs' in primitive:
del primitive['vifs']
if target_version < (1, 3) and 'wait_for_vif_plugged' in primitive:
del primitive['wait_for_vif_plugged']
if target_version < (1, 2):
if 'old_vol_attachment_ids' in primitive:
del primitive['old_vol_attachment_ids']
if target_version < (1, 1):
if 'is_shared_instance_path' in primitive:
del primitive['is_shared_instance_path']
def to_legacy_dict(self, pre_migration_result=False):
legacy = super(HyperVLiveMigrateData, self).to_legacy_dict()
if self.obj_attr_is_set('is_shared_instance_path'):
legacy['is_shared_instance_path'] = self.is_shared_instance_path
return legacy
def from_legacy_dict(self, legacy):
super(HyperVLiveMigrateData, self).from_legacy_dict(legacy)
if 'is_shared_instance_path' in legacy:
self.is_shared_instance_path = legacy['is_shared_instance_path']
@obj_base.NovaObjectRegistry.register
class PowerVMLiveMigrateData(LiveMigrateData):
# Version 1.0: Initial version
# Version 1.1: Added the Virtual Ethernet Adapter VLAN mappings.
# Version 1.2: Added old_vol_attachment_ids
# Version 1.3: Added wait_for_vif_plugged
# Version 1.4: Inherited vifs from LiveMigrateData
VERSION = '1.4'
fields = {
'host_mig_data': fields.DictOfNullableStringsField(),
'dest_ip': fields.StringField(),
'dest_user_id': fields.StringField(),
'dest_sys_name': fields.StringField(),
'public_key': fields.StringField(),
'dest_proc_compat': fields.StringField(),
'vol_data': fields.DictOfNullableStringsField(),
'vea_vlan_mappings': fields.DictOfNullableStringsField(),
}
def obj_make_compatible(self, primitive, target_version):
super(PowerVMLiveMigrateData, self).obj_make_compatible(
primitive, target_version)
target_version = versionutils.convert_version_to_tuple(target_version)
if target_version < (1, 4) and 'vifs' in primitive:
del primitive['vifs']
if target_version < (1, 3) and 'wait_for_vif_plugged' in primitive:
del primitive['wait_for_vif_plugged']
if target_version < (1, 2):
if 'old_vol_attachment_ids' in primitive:
del primitive['old_vol_attachment_ids']
if target_version < (1, 1):
if 'vea_vlan_mappings' in primitive:
del primitive['vea_vlan_mappings']
def to_legacy_dict(self, pre_migration_result=False):
legacy = super(PowerVMLiveMigrateData, self).to_legacy_dict()
for field in self.fields:
if self.obj_attr_is_set(field):
legacy[field] = getattr(self, field)
return legacy
def from_legacy_dict(self, legacy):
super(PowerVMLiveMigrateData, self).from_legacy_dict(legacy)
for field in self.fields:
if field in legacy:
setattr(self, field, legacy[field])