57 lines
2.4 KiB
Python
57 lines
2.4 KiB
Python
# Copyright (c) 2017 Veritas Technologies LLC.
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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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"""Libvirt volume driver for HyperScale."""
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from os_brick.initiator import connector
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from oslo_log import log as logging
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from nova import utils
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from nova.virt.libvirt.volume import volume as libvirt_volume
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LOG = logging.getLogger(__name__)
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class LibvirtHyperScaleVolumeDriver(libvirt_volume.LibvirtVolumeDriver):
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"""Class HyperScale libvirt volume driver
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This class implements a Libvirt volume driver for Veritas
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HyperScale storage. The class uses its parent class get_config method,
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and calls the Veritas HyperScale os-brick connector to handle the work
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of the connect_volume and disconnect volume methods.
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"""
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def __init__(self, connection):
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super(LibvirtHyperScaleVolumeDriver, self).__init__(connection)
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self.connector = connector.InitiatorConnector.factory(
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'VERITAS_HYPERSCALE', utils.get_root_helper())
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def connect_volume(self, connection_info, disk_info, instance):
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# The os-brick connector may raise BrickException.
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# The convention in nova is to just propagate it up.
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# Note that the device path is returned from the os-brick connector
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# using the "path" key, LibvirtVolumeDriver.get_config gets the
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# device path from the "device_path" key in connection_info.
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device_info = self.connector.connect_volume(connection_info['data'])
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connection_info['data']['device_path'] = device_info.get('path')
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LOG.info("connect_volume: device path %(device_path)s",
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{'device_path': connection_info['data']['device_path']})
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def disconnect_volume(self, connection_info, disk_dev, instance):
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self.connector.disconnect_volume(connection_info['data'], None)
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LOG.info("Disconnected volume %(vol_id)s",
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{'vol_id': connection_info['data']['name']})
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