def get_all_multipath_block_devices(self):
from infi.devicemanager import DeviceManager
from infi.wmpio import WmiClient, get_multipath_devices
device_manager = DeviceManager()
wmi_client = WmiClient()
def _iter():
for disk_drive in device_manager.disk_drives:
if not is_disk_drive_managed_by_windows_mpio(disk_drive):
continue
yield disk_drive
devices = list(_iter())
multipath_dict = get_multipath_devices(wmi_client)
policies_dict = LazyLoadBalancingInfomrationDict(wmi_client)
def _get_multipath_object(device_object):
key = u"%s_0" % device_object._instance_id
if key not in multipath_dict:
raise RescanIsNeeded()
return multipath_dict[key]
def _get_multipath_device(device_object):
return WindowsNativeMultipathBlockDevice(device_object, _get_multipath_object(device_object), policies_dict)
def _is_physical_drive(device_object):
return device_object.get_physical_drive_number() != -1
return filter(_is_physical_drive, map(_get_multipath_device, devices))
def get_io_statistics(self):
from infi.wmpio import get_device_performance, get_multipath_devices, WmiClient
wmi_client = WmiClient()
device_wmi_path = self._multipath_object.InstanceName
all_performance_counters = get_device_performance(wmi_client)
all_devices = get_multipath_devices(wmi_client)
if device_wmi_path not in all_performance_counters:
logger.warn('no perfomance countrs for device {}'.format(device_wmi_path), exc_info=1)
return multipath.PathStatistics(0, 0, 0, 0)
device_performance = all_performance_counters[device_wmi_path]
path_perfromance = device_performance.PerfInfo[self.get_path_id()]
return multipath.PathStatistics(path_perfromance.BytesRead,
path_perfromance.BytesWritten,
path_perfromance.NumberReads,
path_perfromance.NumberWrites)
def get_io_statistics(self):
from infi.wmpio import get_device_performance, get_multipath_devices, WmiClient
wmi_client = WmiClient()
device_wmi_path = self._multipath_object.InstanceName
all_performance_counters = get_device_performance(wmi_client)
all_devices = get_multipath_devices(wmi_client)
if device_wmi_path not in all_performance_counters:
logger.warn(
'no perfomance countrs for device {}'.format(device_wmi_path),
exc_info=1)
return multipath.PathStatistics(0, 0, 0, 0)
device_performance = all_performance_counters[device_wmi_path]
path_perfromance = device_performance.PerfInfo[self.get_path_id()]
return multipath.PathStatistics(path_perfromance.BytesRead,
path_perfromance.BytesWritten,
path_perfromance.NumberReads,
path_perfromance.NumberWrites)
def get_all_multipath_block_devices(self):
from infi.storagemodel.base.gevent_wrapper import run_together
from infi.devicemanager import DeviceManager
from infi.wmpio import WmiClient, get_multipath_devices
from functools import partial
device_manager = DeviceManager()
wmi_client = WmiClient()
physical_drives = set()
multipath_dict = get_multipath_devices(wmi_client)
policies_dict = LazyLoadBalancingInfomrationDict(wmi_client)
def _get_multipath_object(device_object):
prefix = u"%s_" % device_object._instance_id
for key in multipath_dict:
if key.startswith(prefix):
return multipath_dict[key]
return None
def _is_physical_drive(device_object):
if device_object.get_physical_drive_number() != -1:
physical_drives.add(device_object)
def _iter_disk_drives():
for disk_drive in device_manager.disk_drives:
if not is_disk_drive_managed_by_windows_mpio(disk_drive):
logger.debug("disk drive {} is not managed by mpio".format(
disk_drive))
continue
multipath_object = _get_multipath_object(disk_drive)
if multipath_object is None:
logger.error(
"no matching MPIO WMI instance found for disk drive {} (instance_id={!r})"
.format(disk_drive, disk_drive._instance_id))
continue
yield WindowsNativeMultipathBlockDevice(
disk_drive, multipath_object, policies_dict)
run_together(
partial(_is_physical_drive, drive)
for drive in _iter_disk_drives())
return list(physical_drives)
def get_all_multipath_block_devices(self):
from infi.devicemanager import DeviceManager
from infi.wmpio import WmiClient, get_multipath_devices
device_manager = DeviceManager()
wmi_client = WmiClient()
devices = filter(lambda device: device.parent._instance_id.lower() == MPIO_BUS_DRIVER_INSTANCE_ID,
device_manager.disk_drives)
multipath_dict = get_multipath_devices(wmi_client)
policies_dict = LazyLoadBalancingInfomrationDict(wmi_client)
def _get_multipath_object(device_object):
key = u"%s_0" % device_object._instance_id
if not multipath_dict.has_key(key):
raise RescanIsNeeded()
return multipath_dict[key]
def _get_multipath_device(device_object):
return WindowsNativeMultipathBlockDevice(device_object, _get_multipath_object(device_object), policies_dict)
return map(_get_multipath_device, devices)
def get_all_multipath_block_devices(self):
from infi.storagemodel.base.gevent_wrapper import run_together
from infi.devicemanager import DeviceManager
from infi.wmpio import WmiClient, get_multipath_devices
from functools import partial
device_manager = DeviceManager()
wmi_client = WmiClient()
physical_drives = set()
multipath_dict = get_multipath_devices(wmi_client)
policies_dict = LazyLoadBalancingInfomrationDict(wmi_client)
def _get_multipath_object(device_object):
prefix = u"%s_" % device_object._instance_id
for key in multipath_dict:
if key.startswith(prefix):
return multipath_dict[key]
return None
def _is_physical_drive(device_object):
if device_object.get_physical_drive_number() != -1:
physical_drives.add(device_object)
def _iter_disk_drives():
for disk_drive in device_manager.disk_drives:
if not is_disk_drive_managed_by_windows_mpio(disk_drive):
logger.debug("disk drive {} is not managed by mpio".format(disk_drive))
continue
multipath_object = _get_multipath_object(disk_drive)
if multipath_object is None:
logger.error("no matching MPIO WMI instance found for disk drive {} (instance_id={!r})".format(disk_drive, disk_drive._instance_id))
continue
yield WindowsNativeMultipathBlockDevice(disk_drive, multipath_object, policies_dict)
run_together(partial(_is_physical_drive, drive) for drive in _iter_disk_drives())
return list(physical_drives)