185 lines
7.1 KiB
Python
185 lines
7.1 KiB
Python
# Copyright 2014 Objectif Libre
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# Copyright 2015 Dot Hill Systems Corp.
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# Copyright 2016 Seagate Technology or one of its affiliates
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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from cinder import exception
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from cinder import interface
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import cinder.volume.driver
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from cinder.volume.drivers.dothill import dothill_common
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from cinder.volume.drivers.san import san
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from cinder.zonemanager import utils as fczm_utils
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# As of Pike, the DotHill driver is no longer considered supported,
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# but the code remains as it is still subclassed by other drivers.
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# The __init__() function prevents any direct instantiation.
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@interface.volumedriver
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class DotHillFCDriver(cinder.volume.driver.FibreChannelDriver):
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"""OpenStack Fibre Channel cinder drivers for DotHill Arrays.
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.. code:: text
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Version history:
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0.1 - Base version developed for HPMSA FC drivers:
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"https://github.com/openstack/cinder/tree/stable/juno/
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cinder/volume/drivers/san/hp"
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1.0 - Version developed for DotHill arrays with the following
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modifications:
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- added support for v3 API(virtual pool feature)
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- added support for retype volume
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- added support for manage/unmanage volume
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- added initiator target mapping in FC zoning
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- added https support
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1.6 - Add management path redundancy and reduce load placed
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on management controller.
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1.7 - Modified so it can't be invoked except as a superclass
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"""
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def __init__(self, *args, **kwargs):
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# Make sure we're not invoked directly
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if type(self) == DotHillFCDriver:
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raise exception.DotHillDriverNotSupported
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super(DotHillFCDriver, self).__init__(*args, **kwargs)
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self.common = None
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self.configuration.append_config_values(dothill_common.common_opts)
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self.configuration.append_config_values(san.san_opts)
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self.lookup_service = fczm_utils.create_lookup_service()
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def _init_common(self):
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return dothill_common.DotHillCommon(self.configuration)
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def _check_flags(self):
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required_flags = ['san_ip', 'san_login', 'san_password']
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self.common.check_flags(self.configuration, required_flags)
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def do_setup(self, context):
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self.common = self._init_common()
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self._check_flags()
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self.common.do_setup(context)
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def check_for_setup_error(self):
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self._check_flags()
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def create_volume(self, volume):
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self.common.create_volume(volume)
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def create_volume_from_snapshot(self, volume, src_vref):
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self.common.create_volume_from_snapshot(volume, src_vref)
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def create_cloned_volume(self, volume, src_vref):
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self.common.create_cloned_volume(volume, src_vref)
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def delete_volume(self, volume):
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self.common.delete_volume(volume)
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@fczm_utils.add_fc_zone
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def initialize_connection(self, volume, connector):
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self.common.client_login()
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try:
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data = {}
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data['target_lun'] = self.common.map_volume(volume,
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connector,
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'wwpns')
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ports, init_targ_map = self.get_init_targ_map(connector)
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data['target_discovered'] = True
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data['target_wwn'] = ports
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data['initiator_target_map'] = init_targ_map
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info = {'driver_volume_type': 'fibre_channel',
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'data': data}
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return info
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finally:
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self.common.client_logout()
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@fczm_utils.remove_fc_zone
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def terminate_connection(self, volume, connector, **kwargs):
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info = {'driver_volume_type': 'fibre_channel', 'data': {}}
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try:
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self.common.unmap_volume(volume, connector, 'wwpns')
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if not self.common.client.list_luns_for_host(
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connector['wwpns'][0]):
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ports, init_targ_map = self.get_init_targ_map(connector)
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info['data'] = {'target_wwn': ports,
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'initiator_target_map': init_targ_map}
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finally:
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return info
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def get_init_targ_map(self, connector):
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init_targ_map = {}
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target_wwns = []
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ports = self.common.get_active_fc_target_ports()
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if self.lookup_service is not None:
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dev_map = self.lookup_service.get_device_mapping_from_network(
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connector['wwpns'],
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ports)
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for fabric_name in dev_map:
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fabric = dev_map[fabric_name]
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target_wwns += fabric['target_port_wwn_list']
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for initiator in fabric['initiator_port_wwn_list']:
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if initiator not in init_targ_map:
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init_targ_map[initiator] = []
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init_targ_map[initiator] += fabric['target_port_wwn_list']
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init_targ_map[initiator] = list(set(
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init_targ_map[initiator]))
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target_wwns = list(set(target_wwns))
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else:
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initiator_wwns = connector['wwpns']
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target_wwns = ports
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for initiator in initiator_wwns:
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init_targ_map[initiator] = target_wwns
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return target_wwns, init_targ_map
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def get_volume_stats(self, refresh=False):
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stats = self.common.get_volume_stats(refresh)
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stats['storage_protocol'] = 'FC'
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stats['driver_version'] = self.VERSION
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backend_name = self.configuration.safe_get('volume_backend_name')
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stats['volume_backend_name'] = (backend_name or
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self.__class__.__name__)
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return stats
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def create_export(self, context, volume, connector=None):
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pass
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def ensure_export(self, context, volume):
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pass
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def remove_export(self, context, volume):
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pass
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def create_snapshot(self, snapshot):
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self.common.create_snapshot(snapshot)
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def delete_snapshot(self, snapshot):
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self.common.delete_snapshot(snapshot)
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def extend_volume(self, volume, new_size):
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self.common.extend_volume(volume, new_size)
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def retype(self, context, volume, new_type, diff, host):
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return self.common.retype(volume, new_type, diff, host)
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def manage_existing(self, volume, existing_ref):
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self.common.manage_existing(volume, existing_ref)
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def manage_existing_get_size(self, volume, existing_ref):
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return self.common.manage_existing_get_size(volume, existing_ref)
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def unmanage(self, volume):
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pass
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