64 lines
2.3 KiB
Python
64 lines
2.3 KiB
Python
# Copyright 2018 IBM Corp. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from nova_dpm import conf
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from nova_dpm.virt.dpm import exceptions
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CONF = conf.CONF
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class BlockDevice(object):
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def __init__(self, block_device):
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self.bd = block_device
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self._validate_volume_type()
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def _validate_volume_type(self):
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vol_type = self.bd['connection_info']['driver_volume_type']
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if vol_type != 'fibre_channel':
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raise exceptions.UnsupportedVolumeTypeException(
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vol_type=vol_type)
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@property
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def host_wwpns(self):
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return (
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self.bd['connection_info']['data']['initiator_target_map'].keys()
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)
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def get_target_wwpn(self, partition_wwpn):
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if partition_wwpn not in self.host_wwpns:
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raise Exception('Partition WWPN not found from cinder')
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bd_target_wwpns = (
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self.bd['connection_info']['data']['initiator_target_map']
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[partition_wwpn])
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# Some storage systems return a complete list of target WWPNs on
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# cinders request. Only some of them might be available in our FC
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# network. Therefore we need to filter out the invalid ones. The user
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# defines the invalid ones via a config setting.
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valid_target_wwpns = [
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wwpn for wwpn in bd_target_wwpns
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if wwpn not in CONF.dpm.target_wwpn_ignore_list]
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# target_wwpns is a list of wwpns which will be accessible
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# from host wwpn. So we can use any of the target wwpn in the
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# list.
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target_wwpn = (valid_target_wwpns[0]
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if len(valid_target_wwpns) > 0 else '')
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return target_wwpn
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@property
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def lun(self):
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return str(self.bd['connection_info']['data']['target_lun'])
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