/usr/lib/python3/dist-packages/os_win/utils/hostutils.py is in python3-os-win 3.0.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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# 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 socket
from oslo_log import log as logging
from os_win._i18n import _
from os_win import _utils
from os_win import constants
from os_win import exceptions
from os_win.utils import baseutils
from os_win.utils.winapi import libs as w_lib
kernel32 = w_lib.get_shared_lib_handle(w_lib.KERNEL32)
LOG = logging.getLogger(__name__)
class HostUtils(baseutils.BaseUtilsVirt):
_windows_version = None
_MSVM_PROCESSOR = 'Msvm_Processor'
_MSVM_MEMORY = 'Msvm_Memory'
_MSVM_NUMA_NODE = 'Msvm_NumaNode'
_CENTRAL_PROCESSOR = 'Central Processor'
_HOST_FORCED_REBOOT = 6
_HOST_FORCED_SHUTDOWN = 12
_DEFAULT_VM_GENERATION = constants.IMAGE_PROP_VM_GEN_1
FEATURE_RDS_VIRTUALIZATION = 322
FEATURE_MPIO = 57
_wmi_cimv2_namespace = '//./root/cimv2'
_wmi_standard_cimv2_namespace = '//./root/StandardCimv2'
def __init__(self, host='.'):
super(HostUtils, self).__init__(host)
self._conn_cimv2 = self._get_wmi_conn(self._wmi_cimv2_namespace,
privileges=["Shutdown"])
self._conn_scimv2 = self._get_wmi_conn(
self._wmi_standard_cimv2_namespace)
self._netutils_prop = None
@property
def _netutils(self):
if not self._netutils_prop:
# NOTE(claudiub): we're importing utilsfactory here in order to
# avoid circular dependencies.
from os_win import utilsfactory
self._netutils_prop = utilsfactory.get_networkutils()
return self._netutils_prop
def get_cpus_info(self):
"""Returns dictionary containing information about the host's CPUs."""
# NOTE(abalutoiu): Specifying exactly the fields that we need
# improves the speed of the query. The LoadPercentage field
# is the load capacity of each processor averaged to the last
# second, which is time wasted.
cpus = self._conn_cimv2.query(
"SELECT Architecture, Name, Manufacturer, MaxClockSpeed, "
"NumberOfCores, NumberOfLogicalProcessors FROM Win32_Processor "
"WHERE ProcessorType = 3")
cpus_list = []
for cpu in cpus:
cpu_info = {'Architecture': cpu.Architecture,
'Name': cpu.Name,
'Manufacturer': cpu.Manufacturer,
'MaxClockSpeed': cpu.MaxClockSpeed,
'NumberOfCores': cpu.NumberOfCores,
'NumberOfLogicalProcessors':
cpu.NumberOfLogicalProcessors}
cpus_list.append(cpu_info)
return cpus_list
def is_cpu_feature_present(self, feature_key):
"""Checks if the host's CPUs have the given feature."""
return kernel32.IsProcessorFeaturePresent(feature_key)
def get_memory_info(self):
"""Returns a tuple with total visible memory and free physical memory.
The returned values are expressed in KB.
"""
mem_info = self._conn_cimv2.query("SELECT TotalVisibleMemorySize, "
"FreePhysicalMemory "
"FROM win32_operatingsystem")[0]
return (int(mem_info.TotalVisibleMemorySize),
int(mem_info.FreePhysicalMemory))
# TODO(atuvenie) This method should be removed once all the callers have
# changed to use the get_disk_capacity method from diskutils.
def get_volume_info(self, drive):
"""Returns a tuple with total size and free space of the given drive.
Returned values are expressed in bytes.
:param drive: the drive letter of the logical disk whose information
is required.
"""
logical_disk = self._conn_cimv2.query("SELECT Size, FreeSpace "
"FROM win32_logicaldisk "
"WHERE DeviceID='%s'"
% drive)[0]
return (int(logical_disk.Size), int(logical_disk.FreeSpace))
def check_min_windows_version(self, major, minor, build=0):
"""Compares the host's kernel version with the given version.
:returns: True if the host's kernel version is higher or equal to
the given version.
"""
version_str = self.get_windows_version()
return list(map(int, version_str.split('.'))) >= [major, minor, build]
def get_windows_version(self):
"""Returns a string representing the host's kernel version."""
if not HostUtils._windows_version:
Win32_OperatingSystem = self._conn_cimv2.Win32_OperatingSystem()[0]
HostUtils._windows_version = Win32_OperatingSystem.Version
return HostUtils._windows_version
def get_local_ips(self):
"""Returns the list of locally assigned IPs."""
hostname = socket.gethostname()
return _utils.get_ips(hostname)
def get_host_tick_count64(self):
"""Returns host uptime in milliseconds."""
return kernel32.GetTickCount64()
def host_power_action(self, action):
win32_os = self._conn_cimv2.Win32_OperatingSystem()[0]
if action == constants.HOST_POWER_ACTION_SHUTDOWN:
win32_os.Win32Shutdown(self._HOST_FORCED_SHUTDOWN)
elif action == constants.HOST_POWER_ACTION_REBOOT:
win32_os.Win32Shutdown(self._HOST_FORCED_REBOOT)
else:
raise NotImplementedError(
_("Host %(action)s is not supported by the Hyper-V driver") %
{"action": action})
def get_supported_vm_types(self):
"""Get the supported Hyper-V VM generations.
Hyper-V Generation 2 VMs are supported in Windows 8.1,
Windows Server / Hyper-V Server 2012 R2 or newer.
:returns: array of supported VM generations (ex. ['hyperv-gen1'])
"""
if self.check_min_windows_version(6, 3):
return [constants.IMAGE_PROP_VM_GEN_1,
constants.IMAGE_PROP_VM_GEN_2]
else:
return [constants.IMAGE_PROP_VM_GEN_1]
def get_default_vm_generation(self):
return self._DEFAULT_VM_GENERATION
def check_server_feature(self, feature_id):
"""Checks if the given feature exists on the host."""
return len(self._conn_cimv2.Win32_ServerFeature(ID=feature_id)) > 0
def get_nic_sriov_vfs(self):
"""Get host's NIC SR-IOV VFs.
This method will ignore the vSwitches which do not have SR-IOV enabled,
or which are poorly configured (the NIC does not support SR-IOV).
:returns: a list of dictionaries, containing the following fields:
- 'vswitch_name': the vSwtch name.
- 'total_vfs': the vSwitch's maximum number of VFs. (> 0)
- 'used_vfs': the vSwitch's number of used VFs. (<= 'total_vfs')
"""
vfs = []
# NOTE(claudiub): A vSwitch will have to be configured to enable
# SR-IOV, otherwise its IOVPreferred flag will be False.
vswitch_sds = self._conn.Msvm_VirtualEthernetSwitchSettingData(
IOVPreferred=True)
for vswitch_sd in vswitch_sds:
hw_offload = self._conn.Msvm_EthernetSwitchHardwareOffloadData(
SystemName=vswitch_sd.VirtualSystemIdentifier)[0]
if not hw_offload.IovVfCapacity:
LOG.warning("VSwitch %s has SR-IOV enabled, but it is not "
"supported by the NIC or by the OS.",
vswitch_sd.ElementName)
continue
nic_name = self._netutils.get_vswitch_external_network_name(
vswitch_sd.ElementName)
if not nic_name:
# NOTE(claudiub): This can happen if the vSwitch is not
# external.
LOG.warning("VSwitch %s is not external.",
vswitch_sd.ElementName)
continue
nic = self._conn_scimv2.MSFT_NetAdapter(
InterfaceDescription=nic_name)[0]
vfs.append({
'vswitch_name': vswitch_sd.ElementName,
'device_id': nic.PnPDeviceID,
'total_vfs': hw_offload.IovVfCapacity,
'used_vfs': hw_offload.IovVfUsage,
})
return vfs
def get_numa_nodes(self):
"""Returns the host's list of NUMA nodes.
:returns: list of dictionaries containing information about each
host NUMA node. Each host has at least one NUMA node.
"""
numa_nodes = self._conn.Msvm_NumaNode()
nodes_info = []
system_memory = self._conn.Msvm_Memory(['NumberOfBlocks'])
processors = self._conn.Msvm_Processor(['DeviceID'])
for node in numa_nodes:
# Due to a bug in vmms, getting Msvm_Processor for the numa
# node associators resulted in a vmms crash.
# As an alternative to using associators we have to manually get
# the related Msvm_Processor classes.
# Msvm_HostedDependency is the association class between
# Msvm_NumaNode and Msvm_Processor. We need to use this class to
# relate the two because using associators on Msvm_Processor
# will also result in a crash.
numa_assoc = self._conn.Msvm_HostedDependency(
Antecedent=node.path_())
numa_node_assoc = [item.Dependent for item in numa_assoc]
memory_info = self._get_numa_memory_info(numa_node_assoc,
system_memory)
if not memory_info:
LOG.warning("Could not find memory information for NUMA "
"node. Skipping node measurements.")
continue
cpu_info = self._get_numa_cpu_info(numa_node_assoc, processors)
if not cpu_info:
LOG.warning("Could not find CPU information for NUMA "
"node. Skipping node measurements.")
continue
node_info = {
# NodeID has the format: Microsoft:PhysicalNode\<NODE_ID>
'id': node.NodeID.split('\\')[-1],
# memory block size is 1MB.
'memory': memory_info.NumberOfBlocks,
'memory_usage': node.CurrentlyConsumableMemoryBlocks,
# DeviceID has the format: Microsoft:UUID\0\<DEV_ID>
'cpuset': set([c.DeviceID.split('\\')[-1] for c in cpu_info]),
# cpu_usage can be set, each CPU has a "LoadPercentage"
'cpu_usage': 0,
}
nodes_info.append(node_info)
return nodes_info
def _get_numa_memory_info(self, numa_node_assoc, system_memory):
memory_info = []
paths = [x.path_().upper() for x in numa_node_assoc]
for memory in system_memory:
if memory.path_().upper() in paths:
memory_info.append(memory)
if memory_info:
return memory_info[0]
def _get_numa_cpu_info(self, numa_node_assoc, processors):
cpu_info = []
paths = [x.path_().upper() for x in numa_node_assoc]
for proc in processors:
if proc.path_().upper() in paths:
cpu_info.append(proc)
return cpu_info
def get_remotefx_gpu_info(self):
"""Returns information about the GPUs used for RemoteFX.
:returns: list with dictionaries containing information about each
GPU used for RemoteFX.
"""
gpus = []
all_gpus = self._conn.Msvm_Physical3dGraphicsProcessor(
EnabledForVirtualization=True)
for gpu in all_gpus:
gpus.append({'name': gpu.Name,
'driver_version': gpu.DriverVersion,
'total_video_ram': gpu.TotalVideoMemory,
'available_video_ram': gpu.AvailableVideoMemory,
'directx_version': gpu.DirectXVersion})
return gpus
def verify_host_remotefx_capability(self):
"""Validates that the host supports RemoteFX.
:raises exceptions.HyperVRemoteFXException: if the host has no GPU
that supports DirectX 11, or SLAT.
"""
synth_3d_video_pool = self._conn.Msvm_Synth3dVideoPool()[0]
if not synth_3d_video_pool.IsGpuCapable:
raise exceptions.HyperVRemoteFXException(
_("To enable RemoteFX on Hyper-V at least one GPU supporting "
"DirectX 11 is required."))
if not synth_3d_video_pool.IsSlatCapable:
raise exceptions.HyperVRemoteFXException(
_("To enable RemoteFX on Hyper-V it is required that the host "
"GPUs support SLAT."))
def is_host_guarded(self):
"""Checks if the host is guarded.
:returns: False, only Windows / Hyper-V Server 2016 or newer can be
guarded.
"""
return False
def supports_nested_virtualization(self):
"""Checks if the host supports nested virtualization.
:returns: False, only Windows / Hyper-V Server 2016 or newer supports
nested virtualization.
"""
return False
def get_pci_passthrough_devices(self):
"""Get host PCI devices path.
Discrete device assignment is supported only on Windows / Hyper-V
Server 2016 or newer.
:returns: a list of the assignable PCI devices.
"""
return []
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