nova/nova/virt/libvirt/volume/disco.py
zhufl 99c11e526f Remove unused LOG
This is to remove unused LOG

Change-Id: I503198adf1cad1c4af9e0935c941eee5c2373991
2016-06-27 16:40:13 +08:00

62 lines
2.4 KiB
Python

# Copyright (c) 2015 Industrial Technology Research Institute.
# 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.
"""Libvirt volume driver for DISCO."""
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 LibvirtDISCOVolumeDriver(libvirt_volume.LibvirtBaseVolumeDriver):
"""Class DISCO Libvirt volume Driver.
Implements Libvirt part of volume driver for DISCO cinder driver.
Uses the DISCO connector from the os-brick projects.
"""
def __init__(self, connection):
"""Init DISCO connector for LibVirt."""
super(LibvirtDISCOVolumeDriver, self).__init__(connection,
is_block_dev=False)
self.connector = connector.InitiatorConnector.factory(
'DISCO', utils.get_root_helper(),
device_scan_attempts=CONF.libvirt.num_iscsi_scan_tries)
def get_config(self, connection_info, disk_info):
"""Get DISCO volume attachment configuration."""
conf = super(LibvirtDISCOVolumeDriver, self).get_config(
connection_info, disk_info)
conf.source_path = connection_info['data']['device_path']
conf.source_protocol = 'disco'
conf.source_type = 'file'
return conf
def connect_volume(self, connection_info, disk_info):
"""Connect a DISCO volume to a compute node."""
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):
"""Disconnect a DISCO volume of a compute node."""
self.connector.disconnect_volume(connection_info['data'], None)
super(LibvirtDISCOVolumeDriver, self).disconnect_volume(
connection_info, disk_dev)