101 lines
4.8 KiB
Python
101 lines
4.8 KiB
Python
# 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 oslo_log import log as logging
|
|
|
|
import nova.conf
|
|
from nova.virt.libvirt.volume import volume as libvirt_volume
|
|
|
|
|
|
CONF = nova.conf.CONF
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class LibvirtNetVolumeDriver(libvirt_volume.LibvirtBaseVolumeDriver):
|
|
"""Driver to attach Network volumes to libvirt."""
|
|
|
|
def __init__(self, host):
|
|
super(LibvirtNetVolumeDriver,
|
|
self).__init__(host, is_block_dev=False)
|
|
self.connector = None
|
|
|
|
def _set_auth_config_rbd(self, conf, netdisk_properties):
|
|
# The rbd volume driver in cinder sets auth_enabled if the rbd_user is
|
|
# set in cinder. The rbd auth values from the cinder connection take
|
|
# precedence over any local nova config values in case the cinder ceph
|
|
# backend is configured differently than the nova rbd ephemeral storage
|
|
# configuration.
|
|
auth_enabled = netdisk_properties.get('auth_enabled')
|
|
if auth_enabled:
|
|
conf.auth_username = netdisk_properties['auth_username']
|
|
# We started preferring Cinder config for rbd auth values starting
|
|
# in Ocata, but if we have a guest connection from before that when
|
|
# secret_uuid wasn't configured in Cinder, we need to fallback to
|
|
# get it from local nova.conf.
|
|
if netdisk_properties['secret_uuid'] is not None:
|
|
conf.auth_secret_uuid = netdisk_properties['secret_uuid']
|
|
else:
|
|
# If we're using the rbd_secret_uuid from nova.conf we need to
|
|
# use the rbd_user from nova.conf as well.
|
|
LOG.debug('Falling back to Nova configuration for RBD auth '
|
|
'secret_uuid and username values.')
|
|
conf.auth_username = CONF.libvirt.rbd_user
|
|
conf.auth_secret_uuid = CONF.libvirt.rbd_secret_uuid
|
|
# secret_type is always hard-coded to 'ceph' in cinder
|
|
conf.auth_secret_type = netdisk_properties['secret_type']
|
|
elif CONF.libvirt.rbd_secret_uuid:
|
|
# Anyone relying on falling back to nova config is probably having
|
|
# this work accidentally and we'll remove that support in the
|
|
# future.
|
|
# NOTE(mriedem): We'll have to be extra careful about this in case
|
|
# the reason we got here is due to an old volume connection created
|
|
# before we started preferring the Cinder settings in Ocata.
|
|
LOG.warning('Falling back to Nova configuration values for '
|
|
'RBD authentication. Cinder should be configured '
|
|
'for auth with Ceph volumes. This fallback will '
|
|
'be dropped in a future release.')
|
|
# use the nova config values
|
|
conf.auth_username = CONF.libvirt.rbd_user
|
|
conf.auth_secret_uuid = CONF.libvirt.rbd_secret_uuid
|
|
# secret_type is always hard-coded to 'ceph' in cinder
|
|
conf.auth_secret_type = netdisk_properties['secret_type']
|
|
|
|
def _get_block_config(self, conf, connection_info):
|
|
conf.source_type = "block"
|
|
conf.source_path = connection_info['data']['device_path']
|
|
conf.driver_io = "native"
|
|
return conf
|
|
|
|
def _get_net_config(self, conf, connection_info):
|
|
netdisk_properties = connection_info['data']
|
|
conf.source_type = "network"
|
|
conf.source_protocol = connection_info['driver_volume_type']
|
|
conf.source_name = netdisk_properties.get('name')
|
|
conf.source_hosts = netdisk_properties.get('hosts', [])
|
|
conf.source_ports = netdisk_properties.get('ports', [])
|
|
if conf.source_protocol == 'rbd':
|
|
self._set_auth_config_rbd(conf, netdisk_properties)
|
|
return conf
|
|
|
|
def get_config(self, connection_info, disk_info):
|
|
"""Returns xml for libvirt."""
|
|
conf = super(
|
|
LibvirtNetVolumeDriver, self).get_config(
|
|
connection_info, disk_info)
|
|
return self._get_net_config(conf, connection_info)
|
|
|
|
def extend_volume(self, connection_info, instance, requested_size):
|
|
# There is nothing to do for network volumes. Cinder already
|
|
# extended the volume and there is no local block device which
|
|
# needs to be refreshed.
|
|
return requested_size
|