64 lines
2.3 KiB
Python
64 lines
2.3 KiB
Python
# 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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import nova.conf
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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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from os_brick import initiator
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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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LOG = logging.getLogger(__name__)
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CONF = nova.conf.CONF
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class LibvirtNVMEVolumeDriver(libvirt_volume.LibvirtVolumeDriver):
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"""Driver to attach NVMe volumes to libvirt."""
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def __init__(self, connection):
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super(LibvirtNVMEVolumeDriver,
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self).__init__(connection)
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self.connector = connector.InitiatorConnector.factory(
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initiator.NVME, utils.get_root_helper(),
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device_scan_attempts=CONF.libvirt.num_nvme_discover_tries)
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def connect_volume(self, connection_info, instance):
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device_info = self.connector.connect_volume(
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connection_info['data'])
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LOG.debug(
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"Connecting NVMe volume with device_info %s",
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device_info)
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connection_info['data']['device_path'] = device_info['path']
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def disconnect_volume(self, connection_info, instance):
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"""Detach the volume from the instance."""
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LOG.debug("Disconnecting NVMe disk")
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self.connector.disconnect_volume(
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connection_info['data'], None)
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super(LibvirtNVMEVolumeDriver,
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self).disconnect_volume(connection_info, instance)
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def extend_volume(self, connection_info, instance, requested_size):
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"""Extend the volume."""
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LOG.debug("calling os-brick to extend NVMe Volume", instance=instance)
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new_size = self.connector.extend_volume(connection_info['data'])
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LOG.debug("Extend NVMe Volume %s; new_size=%s",
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connection_info['data']['device_path'],
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new_size, instance=instance)
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return new_size
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