OpenStack Block Storage (Cinder)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

99 lines
3.7 KiB

# (c) Copyright 2012-2014 Hewlett-Packard Development Company, L.P.
# 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.
#
"""
Utility functions related to the Zone Manager.
"""
from oslo_log import log
from cinder.volume import configuration
from cinder.volume import manager
from cinder.zonemanager import fc_san_lookup_service
from cinder.zonemanager import fc_zone_manager
LOG = log.getLogger(__name__)
def create_zone_manager():
"""If zoning is enabled, build the Zone Manager."""
config = configuration.Configuration(manager.volume_manager_opts)
LOG.debug("Zoning mode: %s.", config.safe_get('zoning_mode'))
if config.safe_get('zoning_mode') == 'fabric':
LOG.debug("FC Zone Manager enabled.")
zm = fc_zone_manager.ZoneManager()
if zm.initialized:
LOG.info("Using FC Zone Manager %(zm_version)s,"
" Driver %(drv_name)s %(drv_version)s.",
{'zm_version': zm.get_version(),
'drv_name': zm.driver.__class__.__name__,
'drv_version': zm.driver.get_version()})
return zm
else:
LOG.debug("FC Zone Manager %(zm_version)s disabled",
{"zm_version": zm.get_version()})
return None
else:
LOG.debug("FC Zone Manager not enabled in cinder.conf.")
return None
def create_lookup_service():
config = configuration.Configuration(manager.volume_manager_opts)
LOG.debug("Zoning mode: %s.", config.safe_get('zoning_mode'))
if config.safe_get('zoning_mode') == 'fabric':
LOG.debug("FC Lookup Service enabled.")
lookup = fc_san_lookup_service.FCSanLookupService()
LOG.info("Using FC lookup service %s.", lookup.lookup_service)
return lookup
else:
LOG.debug("FC Lookup Service not enabled in cinder.conf.")
return None
def get_formatted_wwn(wwn_str):
"""Utility API that formats WWN to insert ':'."""
if (len(wwn_str) != 16):
return wwn_str.lower()
else:
return (':'.join([wwn_str[i:i + 2]
for i in range(0, len(wwn_str), 2)])).lower()
def add_fc_zone(connection_info):
"""Utility function to add a FC Zone."""
if connection_info:
vol_type = connection_info.get('driver_volume_type', None)
if vol_type == 'fibre_channel':
if connection_info['data'].get('initiator_target_map'):
zm = create_zone_manager()
if zm:
LOG.debug("add_fc_zone connection info: %(conninfo)s.",
{'conninfo': connection_info})
zm.add_connection(connection_info)
def remove_fc_zone(connection_info):
"""Utility function for FC drivers to remove zone."""
if connection_info:
vol_type = connection_info.get('driver_volume_type', None)
if vol_type == 'fibre_channel':
if connection_info['data'].get('initiator_target_map'):
zm = create_zone_manager()
if zm:
LOG.debug("remove_fc_zone connection info: %(conninfo)s.",
{'conninfo': connection_info})
zm.delete_connection(connection_info)