302 lines
9.7 KiB
Python
302 lines
9.7 KiB
Python
# Copyright 2013 IBM Corp.
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# Copyright (c) 2013 OpenStack Foundation
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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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IBM Storage driver is a unified Volume driver for IBM XIV, Spectrum Accelerate,
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FlashSystem A9000, FlashSystem A9000R and DS8000 storage systems.
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"""
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import importutils
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from cinder import exception
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from cinder import interface
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from cinder.volume import configuration
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from cinder.volume import driver
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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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driver_opts = [
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cfg.StrOpt(
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'proxy',
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default='cinder.volume.drivers.ibm.ibm_storage.proxy.IBMStorageProxy',
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help='Proxy driver that connects to the IBM Storage Array'),
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cfg.StrOpt(
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'connection_type',
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default='iscsi',
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choices=['fibre_channel', 'iscsi'],
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help='Connection type to the IBM Storage Array'),
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cfg.StrOpt(
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'chap',
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default='disabled',
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choices=['disabled', 'enabled'],
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help='CHAP authentication mode, effective only for iscsi'
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' (disabled|enabled)'),
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cfg.StrOpt(
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'management_ips',
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default='',
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help='List of Management IP addresses (separated by commas)'),
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]
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CONF = cfg.CONF
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CONF.register_opts(driver_opts, group=configuration.SHARED_CONF_GROUP)
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LOG = logging.getLogger(__name__)
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@interface.volumedriver
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class IBMStorageDriver(san.SanDriver,
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driver.ManageableVD,
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driver.MigrateVD,
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driver.CloneableImageVD):
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"""IBM Storage driver
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IBM Storage driver is a unified Volume driver for IBM XIV, Spectrum
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Accelerate, FlashSystem A9000, FlashSystem A9000R and DS8000 storage
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systems.
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Version history:
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.. code-block:: none
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2.0 - First open source driver version
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2.1.0 - Support Consistency groups through Generic volume groups
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- Support XIV/A9000 Volume independent QoS
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- Support Consistency groups replication
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2.3.0 - Support Report backend state
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"""
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VERSION = "2.3.0"
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# ThirdPartySystems wiki page
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CI_WIKI_NAME = "IBM_STORAGE_CI"
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def __init__(self, *args, **kwargs):
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"""Initialize the driver."""
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super(IBMStorageDriver, self).__init__(*args, **kwargs)
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self.configuration.append_config_values(driver_opts)
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proxy = importutils.import_class(self.configuration.proxy)
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active_backend_id = kwargs.get('active_backend_id', None)
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# Driver additional flags should be specified in the cinder.conf
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# preferably in each backend configuration.
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self.proxy = proxy(
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{
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"user": self.configuration.san_login,
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"password": self.configuration.san_password,
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"address": self.configuration.san_ip,
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"vol_pool": self.configuration.san_clustername,
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"connection_type": self.configuration.connection_type,
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"chap": self.configuration.chap,
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"management_ips": self.configuration.management_ips
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},
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LOG,
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exception,
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driver=self,
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active_backend_id=active_backend_id,
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host=self.host)
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@staticmethod
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def get_driver_options():
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return driver_opts
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def do_setup(self, context):
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"""Setup and verify connection to IBM Storage."""
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self.proxy.setup(context)
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def ensure_export(self, context, volume):
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"""Ensure an export."""
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return self.proxy.ensure_export(context, volume)
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def create_export(self, context, volume, connector):
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"""Create an export."""
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return self.proxy.create_export(context, volume)
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def create_volume(self, volume):
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"""Create a volume on the IBM Storage system."""
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return self.proxy.create_volume(volume)
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def delete_volume(self, volume):
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"""Delete a volume on the IBM Storage system."""
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self.proxy.delete_volume(volume)
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def remove_export(self, context, volume):
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"""Disconnect a volume from an attached instance."""
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return self.proxy.remove_export(context, volume)
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def initialize_connection(self, volume, connector):
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"""Map the created volume."""
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conn_info = self.proxy.initialize_connection(volume, connector)
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fczm_utils.add_fc_zone(conn_info)
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return conn_info
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def terminate_connection(self, volume, connector, **kwargs):
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"""Terminate a connection to a volume."""
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conn_info = self.proxy.terminate_connection(volume, connector)
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fczm_utils.remove_fc_zone(conn_info)
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return conn_info
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def create_volume_from_snapshot(self, volume, snapshot):
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"""Create a volume from a snapshot."""
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return self.proxy.create_volume_from_snapshot(
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volume,
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snapshot)
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def create_snapshot(self, snapshot):
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"""Create a snapshot."""
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return self.proxy.create_snapshot(snapshot)
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def delete_snapshot(self, snapshot):
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"""Delete a snapshot."""
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return self.proxy.delete_snapshot(snapshot)
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def get_volume_stats(self, refresh=False):
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"""Get volume stats."""
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return self.proxy.get_volume_stats(refresh)
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def create_cloned_volume(self, tgt_volume, src_volume):
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"""Create Cloned Volume."""
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return self.proxy.create_cloned_volume(tgt_volume, src_volume)
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def extend_volume(self, volume, new_size):
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"""Extend Created Volume."""
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self.proxy.extend_volume(volume, new_size)
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def migrate_volume(self, context, volume, host):
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"""Migrate the volume to the specified host."""
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return self.proxy.migrate_volume(context, volume, host)
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def manage_existing(self, volume, existing_ref):
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"""Brings an existing backend storage object to Cinder management."""
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return self.proxy.manage_volume(volume, existing_ref)
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def manage_existing_get_size(self, volume, existing_ref):
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"""Return size of volume to be managed by manage_existing."""
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return self.proxy.manage_volume_get_size(volume, existing_ref)
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def unmanage(self, volume):
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"""Removes the specified volume from Cinder management."""
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return self.proxy.unmanage_volume(volume)
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def freeze_backend(self, context):
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"""Notify the backend that it's frozen. """
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return self.proxy.freeze_backend(context)
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def thaw_backend(self, context):
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"""Notify the backend that it's unfrozen/thawed. """
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return self.proxy.thaw_backend(context)
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def failover_host(self, context, volumes, secondary_id=None, groups=None):
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"""Failover a backend to a secondary replication target. """
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return self.proxy.failover_host(
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context, volumes, secondary_id, groups)
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def get_replication_status(self, context, volume):
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"""Return replication status."""
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return self.proxy.get_replication_status(context, volume)
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def retype(self, ctxt, volume, new_type, diff, host):
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"""Convert the volume to be of the new type."""
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return self.proxy.retype(ctxt, volume, new_type, diff, host)
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def create_group(self, context, group):
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"""Creates a group."""
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return self.proxy.create_group(context, group)
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def delete_group(self, context, group, volumes):
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"""Deletes a group."""
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return self.proxy.delete_group(context, group, volumes)
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def create_group_snapshot(self, context, group_snapshot, snapshots):
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"""Creates a group snapshot."""
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return self.proxy.create_group_snapshot(
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context, group_snapshot, snapshots)
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def delete_group_snapshot(self, context, group_snapshot, snapshots):
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"""Deletes a group snapshot."""
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return self.proxy.delete_group_snapshot(
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context, group_snapshot, snapshots)
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def update_group(self, context, group, add_volumes, remove_volumes):
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"""Adds or removes volume(s) to/from an existing group."""
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return self.proxy.update_group(
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context, group, add_volumes, remove_volumes)
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def create_group_from_src(
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self, context, group, volumes, group_snapshot, snapshots,
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source_cg=None, source_vols=None):
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"""Creates a group from source."""
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return self.proxy.create_group_from_src(
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context, group, volumes, group_snapshot, snapshots,
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source_cg, source_vols)
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def enable_replication(self, context, group, volumes):
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"""Enable replication."""
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return self.proxy.enable_replication(context, group, volumes)
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def disable_replication(self, context, group, volumes):
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"""Disable replication."""
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return self.proxy.disable_replication(context, group, volumes)
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def failover_replication(self, context, group, volumes,
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secondary_backend_id):
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"""Failover replication."""
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return self.proxy.failover_replication(context, group, volumes,
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secondary_backend_id)
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def get_replication_error_status(self, context, groups):
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"""Returns error info for replicated groups and its volumes."""
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return self.proxy.get_replication_error_status(context, groups)
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