/usr/lib/python3/dist-packages/os_brick/initiator/windows/fibre_channel.py is in python3-os-brick 2.3.0-0ubuntu1.
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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 | # Copyright 2016 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 collections
import time
from os_win import utilsfactory
from oslo_log import log as logging
from os_brick import exception
from os_brick.initiator.windows import base as win_conn_base
from os_brick import utils
LOG = logging.getLogger(__name__)
class WindowsFCConnector(win_conn_base.BaseWindowsConnector):
def __init__(self, *args, **kwargs):
super(WindowsFCConnector, self).__init__(*args, **kwargs)
self._fc_utils = utilsfactory.get_fc_utils()
@staticmethod
def get_connector_properties(*args, **kwargs):
props = {}
fc_utils = utilsfactory.get_fc_utils()
fc_utils.refresh_hba_configuration()
fc_hba_ports = fc_utils.get_fc_hba_ports()
if fc_hba_ports:
wwnns = []
wwpns = []
for port in fc_hba_ports:
wwnns.append(port['node_name'])
wwpns.append(port['port_name'])
props['wwpns'] = wwpns
props['wwnns'] = list(set(wwnns))
return props
@utils.trace
def connect_volume(self, connection_properties):
volume_paths = self.get_volume_paths(connection_properties)
if not volume_paths:
raise exception.NoFibreChannelVolumeDeviceFound()
device_path = volume_paths[0]
device_number = self._diskutils.get_device_number_from_device_name(
device_path)
scsi_wwn = self._get_scsi_wwn(device_number)
device_info = {'type': 'block',
'path': device_path,
'number': device_number,
'scsi_wwn': scsi_wwn}
return device_info
@utils.trace
def get_volume_paths(self, connection_properties):
# Returns a list containing at most one disk path such as
# \\.\PhysicalDrive4.
#
# If multipath is used and the MPIO service is properly configured
# to claim the disks, we'll still get a single device path, having
# the same format, which will be used for all the IO operations.
disk_paths = set()
for attempt in range(self.device_scan_attempts):
self._diskutils.rescan_disks()
volume_mappings = self._get_fc_volume_mappings(
connection_properties)
LOG.debug("Retrieved volume mappings %(vol_mappings)s "
"for volume %(conn_props)s",
dict(vol_mappings=volume_mappings,
conn_props=connection_properties))
# Because of MPIO, we may not be able to get the device name
# from a specific mapping if the disk was accessed through
# an other HBA at that moment. In that case, the device name
# will show up as an empty string.
for mapping in volume_mappings:
device_name = mapping['device_name']
if device_name:
disk_paths.add(device_name)
if disk_paths:
break
time.sleep(self.device_scan_interval)
self._check_device_paths(disk_paths)
return list(disk_paths)
def _get_fc_volume_mappings(self, connection_properties):
# Note(lpetrut): All the WWNs returned by os-win are upper case.
target_wwpns = [wwpn.upper()
for wwpn in connection_properties['target_wwn']]
target_lun = connection_properties['target_lun']
volume_mappings = []
hba_mappings = self._get_fc_hba_mappings()
for node_name in hba_mappings:
target_mappings = self._fc_utils.get_fc_target_mappings(node_name)
for mapping in target_mappings:
if (mapping['port_name'] in target_wwpns
and mapping['lun'] == target_lun):
volume_mappings.append(mapping)
return volume_mappings
def _get_fc_hba_mappings(self):
mappings = collections.defaultdict(list)
fc_hba_ports = self._fc_utils.get_fc_hba_ports()
for port in fc_hba_ports:
mappings[port['node_name']].append(port['port_name'])
return mappings
@utils.trace
def disconnect_volume(self, connection_properties,
force=False, ignore_errors=False):
pass
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