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# Copyright 2015 HGST
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from os_brick.initiator import connector
import nova.conf
from nova import utils
from nova.virt.libvirt.volume import volume as libvirt_volume
CONF = nova.conf.CONF
class LibvirtHGSTVolumeDriver(libvirt_volume.LibvirtBaseVolumeDriver):
"""Driver to attach HGST volumes to libvirt."""
def __init__(self, host):
super(LibvirtHGSTVolumeDriver,
self).__init__(host, is_block_dev=True)
self.connector = connector.InitiatorConnector.factory(
'HGST', utils.get_root_helper(),
device_scan_attempts=CONF.libvirt.num_volume_scan_tries)
def get_config(self, connection_info, disk_info):
"""Returns xml for libvirt."""
conf = super(LibvirtHGSTVolumeDriver,
self).get_config(connection_info, disk_info)
conf.source_type = "block"
conf.source_path = connection_info['data']['device_path']
return conf
def connect_volume(self, connection_info, disk_info, instance):
device_info = self.connector.connect_volume(connection_info['data'])
connection_info['data']['device_path'] = device_info['path']
def disconnect_volume(self, connection_info, disk_dev, instance):
self.connector.disconnect_volume(connection_info['data'], None)
super(LibvirtHGSTVolumeDriver,
self).disconnect_volume(connection_info, disk_dev, instance)
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