/usr/lib/python3/dist-packages/os_win/utils/compute/livemigrationutils.py is in python3-os-win 3.0.0-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 | # Copyright 2013 Cloudbase Solutions Srl
# All Rights Reserved.
#
# 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 platform
from oslo_log import log as logging
from os_win._i18n import _
from os_win import exceptions
from os_win.utils import _wqlutils
from os_win.utils.compute import migrationutils
from os_win.utils.compute import vmutils
LOG = logging.getLogger(__name__)
class LiveMigrationUtils(migrationutils.MigrationUtils):
_STORAGE_ALLOC_SETTING_DATA_CLASS = 'Msvm_StorageAllocationSettingData'
_CIM_RES_ALLOC_SETTING_DATA_CLASS = 'CIM_ResourceAllocationSettingData'
_MIGRATION_TYPE_VIRTUAL_SYSTEM = 32768
_MIGRATION_TYPE_VIRTUAL_SYSTEM_AND_STORAGE = 32771
_MIGRATION_TYPE_STAGED = 32770
def __init__(self):
super(LiveMigrationUtils, self).__init__()
def _get_conn_v2(self, host='localhost'):
try:
return self._get_wmi_obj(self._wmi_namespace % host,
compatibility_mode=True)
except exceptions.x_wmi as ex:
LOG.exception('Get version 2 connection error')
if ex.com_error.hresult == -2147217394:
msg = (_('Live migration is not supported on target host "%s"')
% host)
elif ex.com_error.hresult == -2147023174:
msg = (_('Target live migration host "%s" is unreachable')
% host)
else:
msg = _('Live migration failed: %r') % ex
raise exceptions.HyperVException(msg)
def check_live_migration_config(self):
migration_svc = (
self._compat_conn.Msvm_VirtualSystemMigrationService()[0])
vsmssd = (
self._compat_conn.Msvm_VirtualSystemMigrationServiceSettingData())
vsmssd = vsmssd[0]
if not vsmssd.EnableVirtualSystemMigration:
raise exceptions.HyperVException(
_('Live migration is not enabled on this host'))
if not migration_svc.MigrationServiceListenerIPAddressList:
raise exceptions.HyperVException(
_('Live migration networks are not configured on this host'))
def _get_vm(self, conn_v2, vm_name):
vms = conn_v2.Msvm_ComputerSystem(ElementName=vm_name)
n = len(vms)
if not n:
raise exceptions.HyperVVMNotFoundException(vm_name=vm_name)
elif n > 1:
raise exceptions.HyperVException(_('Duplicate VM name found: %s')
% vm_name)
return vms[0]
def _create_planned_vm(self, conn_v2_local, conn_v2_remote,
vm, ip_addr_list, dest_host):
# Staged
vsmsd = conn_v2_remote.Msvm_VirtualSystemMigrationSettingData(
MigrationType=self._MIGRATION_TYPE_STAGED)[0]
vsmsd.DestinationIPAddressList = ip_addr_list
migration_setting_data = vsmsd.GetText_(1)
LOG.debug("Creating planned VM for VM: %s", vm.ElementName)
migr_svc = conn_v2_remote.Msvm_VirtualSystemMigrationService()[0]
(job_path, ret_val) = migr_svc.MigrateVirtualSystemToHost(
ComputerSystem=vm.path_(),
DestinationHost=dest_host,
MigrationSettingData=migration_setting_data)
self._jobutils.check_ret_val(ret_val, job_path)
return conn_v2_local.Msvm_PlannedComputerSystem(Name=vm.Name)[0]
def _get_disk_data(self, vm_name, vmutils_remote, disk_path_mapping):
disk_paths = {}
phys_disk_resources = vmutils_remote.get_vm_disks(vm_name)[1]
for disk in phys_disk_resources:
rasd_rel_path = disk.path().RelPath
# We set this when volumes are attached.
serial = disk.ElementName
disk_paths[rasd_rel_path] = disk_path_mapping[serial]
return disk_paths
def _update_planned_vm_disk_resources(self, conn_v2_local,
planned_vm, vm_name,
disk_paths_remote):
updated_resource_setting_data = []
sasds = _wqlutils.get_element_associated_class(
self._compat_conn, self._CIM_RES_ALLOC_SETTING_DATA_CLASS,
element_uuid=planned_vm.Name)
for sasd in sasds:
if (sasd.ResourceType == 17 and sasd.ResourceSubType ==
"Microsoft:Hyper-V:Physical Disk Drive" and
sasd.HostResource):
# Replace the local disk target with the correct remote one
old_disk_path = sasd.HostResource[0]
new_disk_path = disk_paths_remote.pop(sasd.path().RelPath)
LOG.debug("Replacing host resource "
"%(old_disk_path)s with "
"%(new_disk_path)s on planned VM %(vm_name)s",
{'old_disk_path': old_disk_path,
'new_disk_path': new_disk_path,
'vm_name': vm_name})
sasd.HostResource = [new_disk_path]
updated_resource_setting_data.append(sasd.GetText_(1))
LOG.debug("Updating remote planned VM disk paths for VM: %s",
vm_name)
vsmsvc = conn_v2_local.Msvm_VirtualSystemManagementService()[0]
(res_settings, job_path, ret_val) = vsmsvc.ModifyResourceSettings(
ResourceSettings=updated_resource_setting_data)
self._jobutils.check_ret_val(ret_val, job_path)
def _get_vhd_setting_data(self, vm):
new_resource_setting_data = []
sasds = _wqlutils.get_element_associated_class(
self._compat_conn, self._STORAGE_ALLOC_SETTING_DATA_CLASS,
element_uuid=vm.Name)
for sasd in sasds:
if (sasd.ResourceType == 31 and sasd.ResourceSubType ==
"Microsoft:Hyper-V:Virtual Hard Disk"):
new_resource_setting_data.append(sasd.GetText_(1))
return new_resource_setting_data
def _live_migrate_vm(self, conn_v2_local, vm, planned_vm, rmt_ip_addr_list,
new_resource_setting_data, dest_host, migration_type):
# VirtualSystemAndStorage
vsmsd = conn_v2_local.Msvm_VirtualSystemMigrationSettingData(
MigrationType=migration_type)[0]
vsmsd.DestinationIPAddressList = rmt_ip_addr_list
if planned_vm:
vsmsd.DestinationPlannedVirtualSystemId = planned_vm.Name
migration_setting_data = vsmsd.GetText_(1)
migr_svc = conn_v2_local.Msvm_VirtualSystemMigrationService()[0]
LOG.debug("Starting live migration for VM: %s", vm.ElementName)
(job_path, ret_val) = migr_svc.MigrateVirtualSystemToHost(
ComputerSystem=vm.path_(),
DestinationHost=dest_host,
MigrationSettingData=migration_setting_data,
NewResourceSettingData=new_resource_setting_data)
self._jobutils.check_ret_val(ret_val, job_path)
def _get_ip_address_list(self, conn_v2, hostname):
LOG.debug("Getting live migration networks for host: %s",
hostname)
migr_svc_rmt = conn_v2.Msvm_VirtualSystemMigrationService()[0]
return migr_svc_rmt.MigrationServiceListenerIPAddressList
def live_migrate_vm(self, vm_name, dest_host, migrate_disks=True):
self.check_live_migration_config()
conn_v2_remote = self._get_conn_v2(dest_host)
vm = self._get_vm(self._compat_conn, vm_name)
rmt_ip_addr_list = self._get_ip_address_list(conn_v2_remote,
dest_host)
planned_vm = self._get_planned_vm(vm_name, conn_v2_remote)
if migrate_disks:
new_resource_setting_data = self._get_vhd_setting_data(vm)
migration_type = self._MIGRATION_TYPE_VIRTUAL_SYSTEM_AND_STORAGE
else:
new_resource_setting_data = None
migration_type = self._MIGRATION_TYPE_VIRTUAL_SYSTEM
self._live_migrate_vm(self._compat_conn, vm, planned_vm,
rmt_ip_addr_list, new_resource_setting_data,
dest_host, migration_type)
def create_planned_vm(self, vm_name, src_host, disk_path_mapping):
# This is run on the destination host.
dest_host = platform.node()
vmutils_remote = vmutils.VMUtils(src_host)
conn_v2_remote = self._get_conn_v2(src_host)
vm = self._get_vm(conn_v2_remote, vm_name)
# Make sure there are no planned VMs already.
self.destroy_existing_planned_vm(vm_name)
ip_addr_list = self._get_ip_address_list(self._compat_conn,
dest_host)
disk_paths = self._get_disk_data(vm_name, vmutils_remote,
disk_path_mapping)
planned_vm = self._create_planned_vm(self._compat_conn,
conn_v2_remote,
vm, ip_addr_list,
dest_host)
self._update_planned_vm_disk_resources(self._compat_conn, planned_vm,
vm_name, disk_paths)
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