156 lines
4.9 KiB
Python
156 lines
4.9 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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# Authors:
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# Erik Zaadi <erikz@il.ibm.com>
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# Avishay Traeger <avishay@il.ibm.com>
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"""
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Unified Volume driver for IBM XIV and DS8K Storage Systems.
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"""
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from oslo.config import cfg
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from cinder import exception
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from cinder.openstack.common import importutils
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from cinder.openstack.common import log as logging
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from cinder.volume.drivers.san import san
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xiv_ds8k_opts = [
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cfg.StrOpt(
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'xiv_ds8k_proxy',
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default='xiv_ds8k_openstack.nova_proxy.XIVDS8KNovaProxy',
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help='Proxy driver that connects to the IBM Storage Array'),
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cfg.StrOpt(
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'xiv_ds8k_connection_type',
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default='iscsi',
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help='Connection type to the IBM Storage Array'
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' (fibre_channel|iscsi)'),
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]
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CONF = cfg.CONF
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CONF.register_opts(xiv_ds8k_opts)
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LOG = logging.getLogger(__name__)
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class XIVDS8KDriver(san.SanDriver):
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"""Unified IBM XIV and DS8K volume driver."""
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def __init__(self, *args, **kwargs):
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"""Initialize the driver."""
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super(XIVDS8KDriver, self).__init__(*args, **kwargs)
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self.configuration.append_config_values(xiv_ds8k_opts)
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proxy = importutils.import_class(self.configuration.xiv_ds8k_proxy)
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#NOTE: All Array specific configurations are prefixed with:
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#"xiv_ds8k_array_"
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#These additional flags should be specified in the cinder.conf
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#preferably in each backend configuration.
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self.xiv_ds8k_proxy = proxy(
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{
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"xiv_ds8k_user": self.configuration.san_login,
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"xiv_ds8k_pass": self.configuration.san_password,
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"xiv_ds8k_address": self.configuration.san_ip,
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"xiv_ds8k_vol_pool": self.configuration.san_clustername,
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"xiv_ds8k_connection_type":
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self.configuration.xiv_ds8k_connection_type
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},
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LOG,
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exception,
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driver=self)
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def do_setup(self, context):
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"""Setup and verify IBM XIV and DS8K Storage connection."""
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self.xiv_ds8k_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.xiv_ds8k_proxy.ensure_export(context, volume)
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def create_export(self, context, volume):
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"""Create an export."""
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return self.xiv_ds8k_proxy.create_export(context, volume)
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def create_volume(self, volume):
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"""Create a volume on the IBM XIV and DS8K Storage system."""
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return self.xiv_ds8k_proxy.create_volume(volume)
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def delete_volume(self, volume):
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"""Delete a volume on the IBM XIV and DS8K Storage system."""
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self.xiv_ds8k_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.xiv_ds8k_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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return self.xiv_ds8k_proxy.initialize_connection(volume, connector)
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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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return self.xiv_ds8k_proxy.terminate_connection(volume, connector)
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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.xiv_ds8k_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.xiv_ds8k_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.xiv_ds8k_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.xiv_ds8k_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.xiv_ds8k_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.xiv_ds8k_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.xiv_ds8k_proxy.migrate_volume(context, volume, host)
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