3eb855260e
Implement attach snapshot for backup snapshot feature in Huawei driver. DocImpact Implements: blueprint huawei-support-backup-snapshot Change-Id: I0173d397760bc17c01af792b4c4cc2bcbf45fedd
367 lines
15 KiB
Python
367 lines
15 KiB
Python
# Copyright (c) 2016 Huawei Technologies Co., Ltd.
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# 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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#
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from oslo_log import log as logging
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from cinder import exception
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from cinder.i18n import _, _LI, _LW
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from cinder.volume.drivers.huawei import constants
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from cinder.volume.drivers.huawei import huawei_utils
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LOG = logging.getLogger(__name__)
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class HuaweiHyperMetro(object):
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def __init__(self, client, rmt_client, configuration):
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self.client = client
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self.rmt_client = rmt_client
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self.configuration = configuration
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def create_hypermetro(self, local_lun_id, lun_params):
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"""Create hypermetro."""
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try:
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# Get the remote pool info.
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config_pool = self.configuration.metro_storage_pools
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remote_pool = self.rmt_client.get_all_pools()
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pool = self.rmt_client.get_pool_info(config_pool, remote_pool)
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if not pool:
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err_msg = _("Remote pool cannot be found.")
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LOG.error(err_msg)
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raise exception.VolumeBackendAPIException(data=err_msg)
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# Create remote lun.
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lun_params['PARENTID'] = pool['ID']
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remotelun_info = self.rmt_client.create_lun(lun_params)
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remote_lun_id = remotelun_info['ID']
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# Get hypermetro domain.
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try:
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domain_name = self.configuration.metro_domain_name
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domain_id = self.rmt_client.get_hyper_domain_id(domain_name)
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self._wait_volume_ready(remote_lun_id)
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hypermetro = self._create_hypermetro_pair(domain_id,
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local_lun_id,
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remote_lun_id)
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LOG.info(_LI("Hypermetro id: %(metro_id)s. "
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"Remote lun id: %(remote_lun_id)s."),
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{'metro_id': hypermetro['ID'],
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'remote_lun_id': remote_lun_id})
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return {'hypermetro_id': hypermetro['ID'],
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'remote_lun_id': remote_lun_id}
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except exception.VolumeBackendAPIException as err:
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self.rmt_client.delete_lun(remote_lun_id)
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msg = _('Create hypermetro error. %s.') % err
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raise exception.VolumeBackendAPIException(data=msg)
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except exception.VolumeBackendAPIException:
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raise
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def delete_hypermetro(self, volume):
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"""Delete hypermetro."""
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metadata = huawei_utils.get_volume_metadata(volume)
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metro_id = metadata['hypermetro_id']
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remote_lun_id = metadata['remote_lun_id']
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if metro_id:
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self.check_metro_need_to_stop(volume)
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# Delete hypermetro
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self.client.delete_hypermetro(metro_id)
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# Delete remote lun.
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if remote_lun_id and self.rmt_client.check_lun_exist(remote_lun_id):
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self.rmt_client.delete_lun(remote_lun_id)
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def _create_hypermetro_pair(self, domain_id, lun_id, remote_lun_id):
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"""Create a HyperMetroPair."""
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hcp_param = {"DOMAINID": domain_id,
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"HCRESOURCETYPE": '1',
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"ISFIRSTSYNC": False,
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"LOCALOBJID": lun_id,
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"RECONVERYPOLICY": '1',
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"REMOTEOBJID": remote_lun_id,
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"SPEED": '2'}
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return self.client.create_hypermetro(hcp_param)
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def connect_volume_fc(self, volume, connector):
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"""Create map between a volume and a host for FC."""
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wwns = connector['wwpns']
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volume_name = huawei_utils.encode_name(volume.id)
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LOG.info(_LI(
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'initialize_connection_fc, initiator: %(wwpns)s,'
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' volume name: %(volume)s.'),
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{'wwpns': wwns,
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'volume': volume_name})
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metadata = huawei_utils.get_volume_metadata(volume)
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lun_id = metadata['remote_lun_id']
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if lun_id is None:
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lun_id = self.rmt_client.get_lun_id_by_name(volume_name)
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if lun_id is None:
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msg = _("Can't get volume id. Volume name: %s.") % volume_name
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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original_host_name = connector['host']
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host_name = huawei_utils.encode_host_name(original_host_name)
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host_id = self.client.add_host_with_check(host_name,
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original_host_name)
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# Create hostgroup if not exist.
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host_id = self.rmt_client.add_host_with_check(
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host_name, original_host_name)
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online_wwns_in_host = (
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self.rmt_client.get_host_online_fc_initiators(host_id))
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online_free_wwns = self.rmt_client.get_online_free_wwns()
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for wwn in wwns:
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if (wwn not in online_wwns_in_host
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and wwn not in online_free_wwns):
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wwns_in_host = (
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self.rmt_client.get_host_fc_initiators(host_id))
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iqns_in_host = (
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self.rmt_client.get_host_iscsi_initiators(host_id))
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if not (wwns_in_host or iqns_in_host):
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self.rmt_client.remove_host(host_id)
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msg = _('Can not add FC port to host.')
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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for wwn in wwns:
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if wwn in online_free_wwns:
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self.rmt_client.add_fc_port_to_host(host_id, wwn)
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(tgt_port_wwns, init_targ_map) = (
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self.rmt_client.get_init_targ_map(wwns))
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# Add host into hostgroup.
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hostgroup_id = self.rmt_client.add_host_to_hostgroup(host_id)
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map_info = self.rmt_client.do_mapping(lun_id,
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hostgroup_id,
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host_id)
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if not map_info:
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msg = _('Map info is None due to array version '
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'not supporting hypermetro.')
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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host_lun_id = self.rmt_client.get_host_lun_id(host_id, lun_id)
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# Return FC properties.
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fc_info = {'driver_volume_type': 'fibre_channel',
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'data': {'target_lun': int(host_lun_id),
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'target_discovered': True,
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'target_wwn': tgt_port_wwns,
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'volume_id': volume.id,
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'initiator_target_map': init_targ_map,
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'map_info': map_info},
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}
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LOG.info(_LI('Remote return FC info is: %s.'), fc_info)
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return fc_info
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def disconnect_volume_fc(self, volume, connector):
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"""Delete map between a volume and a host for FC."""
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wwns = connector['wwpns']
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volume_name = huawei_utils.encode_name(volume.id)
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metadata = huawei_utils.get_volume_metadata(volume)
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lun_id = metadata['remote_lun_id']
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host_name = connector['host']
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left_lunnum = -1
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lungroup_id = None
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view_id = None
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LOG.info(_LI('terminate_connection_fc: volume name: %(volume)s, '
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'wwpns: %(wwns)s, '
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'lun_id: %(lunid)s.'),
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{'volume': volume_name,
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'wwns': wwns,
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'lunid': lun_id},)
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host_name = huawei_utils.encode_host_name(host_name)
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hostid = self.rmt_client.get_host_id_by_name(host_name)
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if hostid:
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mapping_view_name = constants.MAPPING_VIEW_PREFIX + hostid
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view_id = self.rmt_client.find_mapping_view(
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mapping_view_name)
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if view_id:
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lungroup_id = self.rmt_client.find_lungroup_from_map(
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view_id)
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if lun_id and self.rmt_client.check_lun_exist(lun_id):
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if lungroup_id:
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lungroup_ids = self.rmt_client.get_lungroupids_by_lunid(
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lun_id)
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if lungroup_id in lungroup_ids:
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self.rmt_client.remove_lun_from_lungroup(
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lungroup_id, lun_id)
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else:
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LOG.warning(_LW("Lun is not in lungroup. "
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"Lun id: %(lun_id)s, "
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"lungroup id: %(lungroup_id)s"),
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{"lun_id": lun_id,
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"lungroup_id": lungroup_id})
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(tgt_port_wwns, init_targ_map) = (
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self.rmt_client.get_init_targ_map(wwns))
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hostid = self.rmt_client.get_host_id_by_name(host_name)
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if hostid:
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mapping_view_name = constants.MAPPING_VIEW_PREFIX + hostid
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view_id = self.rmt_client.find_mapping_view(
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mapping_view_name)
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if view_id:
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lungroup_id = self.rmt_client.find_lungroup_from_map(
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view_id)
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if lungroup_id:
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left_lunnum = self.rmt_client.get_obj_count_from_lungroup(
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lungroup_id)
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if int(left_lunnum) > 0:
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info = {'driver_volume_type': 'fibre_channel',
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'data': {}}
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else:
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info = {'driver_volume_type': 'fibre_channel',
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'data': {'target_wwn': tgt_port_wwns,
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'initiator_target_map': init_targ_map}, }
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return info
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def _wait_volume_ready(self, lun_id):
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wait_interval = self.configuration.lun_ready_wait_interval
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def _volume_ready():
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result = self.rmt_client.get_lun_info(lun_id)
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if (result['HEALTHSTATUS'] == constants.STATUS_HEALTH
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and result['RUNNINGSTATUS'] == constants.STATUS_VOLUME_READY):
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return True
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return False
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huawei_utils.wait_for_condition(_volume_ready,
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wait_interval,
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wait_interval * 10)
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def retype(self, volume, new_type):
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return False
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def get_hypermetro_stats(self, hypermetro_id):
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pass
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def create_consistencygroup(self, group):
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LOG.info(_LI("Create Consistency Group: %(group)s."),
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{'group': group.id})
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group_name = huawei_utils.encode_name(group.id)
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domain_name = self.configuration.metro_domain_name
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domain_id = self.client.get_hyper_domain_id(domain_name)
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if not domain_name or not domain_id:
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msg = _("The domain_name config in cinder.conf is wrong.")
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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self.client.create_metrogroup(group_name, group.id, domain_id)
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def delete_consistencygroup(self, context, group, volumes):
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LOG.info(_LI("Delete Consistency Group: %(group)s."),
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{'group': group.id})
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model_update = {}
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volumes_model_update = []
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model_update['status'] = group.status
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metrogroup_id = self.check_consistencygroup_need_to_stop(group)
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if metrogroup_id:
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self.client.delete_metrogroup(metrogroup_id)
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# Deal with the return volumes info
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for volume_ref in volumes:
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volume_update = {'id': volume_ref.id}
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volume_update['status'] = 'deleted'
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volumes_model_update.append(volume_update)
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return model_update, volumes_model_update
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def update_consistencygroup(self, context, group,
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add_volumes, remove_volumes):
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LOG.info(_LI("Update Consistency Group: %(group)s. "
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"This adds or removes volumes from a CG."),
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{'group': group.id})
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model_update = {}
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model_update['status'] = group.status
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metrogroup_id = self.check_consistencygroup_need_to_stop(group)
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if metrogroup_id:
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# Deal with add volumes to CG
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for volume in add_volumes:
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metro_id = self.check_metro_need_to_stop(volume)
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self.client.add_metro_to_metrogroup(metrogroup_id,
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metro_id)
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# Deal with remove volumes from CG
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for volume in remove_volumes:
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metro_id = self.check_metro_need_to_stop(volume)
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self.client.remove_metro_from_metrogroup(metrogroup_id,
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metro_id)
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self.client.sync_hypermetro(metro_id)
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new_group_info = self.client.get_metrogroup_by_id(metrogroup_id)
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is_empty = new_group_info["ISEMPTY"]
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if is_empty == 'false':
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self.client.sync_metrogroup(metrogroup_id)
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# if CG not exist on array
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else:
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msg = _("The CG does not exist on array.")
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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def check_metro_need_to_stop(self, volume):
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metadata = huawei_utils.get_volume_metadata(volume)
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metro_id = metadata['hypermetro_id']
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metro_existed = self.client.check_hypermetro_exist(metro_id)
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if metro_existed:
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metro_info = self.client.get_hypermetro_by_id(metro_id)
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metro_health_status = metro_info['HEALTHSTATUS']
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metro_running_status = metro_info['RUNNINGSTATUS']
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if (metro_health_status == constants.HEALTH_NORMAL and
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(metro_running_status == constants.RUNNING_NORMAL or
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metro_running_status == constants.RUNNING_SYNC)):
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self.client.stop_hypermetro(metro_id)
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return metro_id
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def check_consistencygroup_need_to_stop(self, group):
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group_name = huawei_utils.encode_name(group.id)
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metrogroup_id = self.client.get_metrogroup_by_name(group_name)
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if metrogroup_id:
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metrogroup_info = self.client.get_metrogroup_by_id(metrogroup_id)
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health_status = metrogroup_info['HEALTHSTATUS']
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running_status = metrogroup_info['RUNNINGSTATUS']
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if (health_status == constants.HEALTH_NORMAL
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and (running_status == constants.RUNNING_NORMAL
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or running_status == constants.RUNNING_SYNC)):
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self.client.stop_metrogroup(metrogroup_id)
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return metrogroup_id
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