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# (c) Copyright 2015 - 2019 StorPool
# 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 import initiator
from os_brick.initiator import connector
from oslo_log import log as logging
from nova import utils
from nova.virt.libvirt.volume import volume as libvirt_volume
LOG = logging.getLogger(__name__)
class LibvirtStorPoolVolumeDriver(libvirt_volume.LibvirtVolumeDriver):
"""Driver to attach StorPool volumes to libvirt."""
def __init__(self, host):
super(LibvirtStorPoolVolumeDriver, self).__init__(host)
self.connector = connector.InitiatorConnector.factory(
initiator.STORPOOL, utils.get_root_helper())
def get_config(self, connection_info, disk_info):
"""Returns xml for libvirt."""
conf = super(LibvirtStorPoolVolumeDriver,
self).get_config(connection_info, disk_info)
conf.driver_io = "native"
return conf
def connect_volume(self, connection_info, instance):
LOG.debug("Attaching StorPool volume %s",
connection_info['data']['volume'], instance=instance)
device_info = self.connector.connect_volume(connection_info['data'])
LOG.debug("Attached StorPool volume %s",
device_info, instance=instance)
connection_info['data']['device_path'] = device_info['path']
def disconnect_volume(self, connection_info, instance, force=False):
LOG.debug("Detaching StorPool volume %s",
connection_info['data']['volume'], instance=instance)
self.connector.disconnect_volume(
connection_info['data'], None, force=force)
LOG.debug("Detached StorPool volume", instance=instance)
def extend_volume(self, connection_info, instance, requested_size):
"""Extend the volume."""
LOG.debug("Extending StorPool volume %s",
connection_info['data']['volume'], instance=instance)
new_size = self.connector.extend_volume(connection_info['data'])
LOG.debug("Extended StorPool Volume %s; new_size=%s",
connection_info['data']['device_path'],
new_size, instance=instance)
return new_size
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