467b0441d0
This patch moves the synology driver exceptions to the synology_common.py file. Change-Id: I2a36a4b501fbeba07ef5adaa80171337066d58ce
176 lines
5.6 KiB
Python
176 lines
5.6 KiB
Python
# Copyright (c) 2016 Synology Inc. All rights reserved.
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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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from oslo_log import log as logging
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from oslo_utils import excutils
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from cinder import exception
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from cinder import interface
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from cinder.volume import driver
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from cinder.volume.drivers.synology import synology_common as common
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LOG = logging.getLogger(__name__)
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@interface.volumedriver
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class SynoISCSIDriver(driver.ISCSIDriver):
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"""OpenStack Cinder drivers for Synology storage.
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.. code-block:: none
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Version history:
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1.0.0 - Initial driver. Provide Cinder minimum features
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1.0.1 - Add support for UC series model
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"""
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# ThirdPartySystems wiki page
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CI_WIKI_NAME = 'Synology_DSM_CI'
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VERSION = '1.0.1'
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def __init__(self, *args, **kwargs):
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super(SynoISCSIDriver, self).__init__(*args, **kwargs)
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self.common = None
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self.configuration.append_config_values(common.cinder_opts)
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self.stats = {}
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@staticmethod
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def get_driver_options():
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return common.cinder_opts
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def do_setup(self, context):
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self.common = common.SynoCommon(self.configuration, 'iscsi')
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def check_for_setup_error(self):
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self.common.check_for_setup_error()
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def create_volume(self, volume):
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"""Creates a logical volume."""
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self.common.create_volume(volume)
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def delete_volume(self, volume):
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"""Deletes a logical volume."""
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self.common.delete_volume(volume)
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def create_cloned_volume(self, volume, src_vref):
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"""Creates a clone of the specified volume."""
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self.common.create_cloned_volume(volume, src_vref)
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def extend_volume(self, volume, new_size):
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"""Extend an existing volume's size."""
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if volume['size'] >= new_size:
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LOG.error('New size is smaller than original size. '
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'New: [%(new)d] Old: [%(old)d]',
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{'new': new_size,
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'old': volume['size']})
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return
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self.common.extend_volume(volume, new_size)
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def create_volume_from_snapshot(self, volume, snapshot):
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"""Creates a volume from a snapshot."""
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self.common.create_volume_from_snapshot(volume, snapshot)
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def update_migrated_volume(self, ctxt, volume, new_volume, status):
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"""Return model update for migrated volume."""
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return self.common.update_migrated_volume(volume, new_volume)
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def create_snapshot(self, snapshot):
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"""Creates a snapshot."""
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return self.common.create_snapshot(snapshot)
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def delete_snapshot(self, snapshot):
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"""Deletes a snapshot."""
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self.common.delete_snapshot(snapshot)
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def get_volume_stats(self, refresh=False):
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"""Get volume status.
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If 'refresh' is True, run update the stats first.
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"""
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try:
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if refresh or not self.stats:
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self.stats = self.common.update_volume_stats()
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self.stats['driver_version'] = self.VERSION
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.exception('Failed to get_volume_stats.')
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return self.stats
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def ensure_export(self, context, volume):
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pass
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def create_export(self, context, volume, connector):
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model_update = {}
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try:
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if self.common.is_lun_mapped(volume['name']):
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return model_update
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iqn, trg_id, provider_auth = (self.common.create_iscsi_export
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(volume['name'], volume['id']))
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except Exception as e:
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LOG.exception('Failed to remove_export.')
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raise exception.ExportFailure(reason=e)
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model_update['provider_location'] = (self.common.get_provider_location
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(iqn, trg_id))
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model_update['provider_auth'] = provider_auth
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return model_update
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def remove_export(self, context, volume):
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try:
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if not self.common.is_lun_mapped(volume['name']):
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return
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except common.SynoLUNNotExist:
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LOG.warning("Volume not exist")
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return
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try:
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_, trg_id = (self.common.get_iqn_and_trgid
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(volume['provider_location']))
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self.common.remove_iscsi_export(volume['name'], trg_id)
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except Exception as e:
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LOG.exception('Failed to remove_export.')
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raise exception.RemoveExportException(volume=volume,
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reason=e.msg)
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def initialize_connection(self, volume, connector):
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LOG.debug('iSCSI initiator: %s', connector['initiator'])
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try:
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iscsi_properties = self.common.get_iscsi_properties(volume)
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.exception('Failed to initialize_connection.')
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volume_type = self.configuration.safe_get('target_protocol') or 'iscsi'
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return {
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'driver_volume_type': volume_type,
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'data': iscsi_properties
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}
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def terminate_connection(self, volume, connector, **kwargs):
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pass
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