72 lines
2.8 KiB
Python
72 lines
2.8 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 re
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import nova.conf
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from nova.virt.libvirt import utils as libvirt_utils
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from nova.virt.libvirt.volume import fs
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from nova.virt.libvirt.volume import remotefs
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CONF = nova.conf.CONF
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USERNAME_REGEX = re.compile(r"(user(?:name)?)=(?:[^ ,]+\\)?([^ ,]+)")
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class LibvirtSMBFSVolumeDriver(fs.LibvirtBaseFileSystemVolumeDriver):
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"""Class implements libvirt part of volume driver for SMBFS."""
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def _get_mount_point_base(self):
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return CONF.libvirt.smbfs_mount_point_base
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def get_config(self, connection_info, disk_info):
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"""Returns xml for libvirt."""
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conf = super(LibvirtSMBFSVolumeDriver,
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self).get_config(connection_info, disk_info)
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conf.source_type = 'file'
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conf.driver_cache = 'writeback'
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conf.source_path = connection_info['data']['device_path']
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conf.driver_format = connection_info['data'].get('format', 'raw')
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return conf
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def connect_volume(self, connection_info, instance):
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"""Connect the volume."""
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smbfs_share = connection_info['data']['export']
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mount_path = self._get_mount_path(connection_info)
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if not libvirt_utils.is_mounted(mount_path, smbfs_share):
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mount_options = self._parse_mount_options(connection_info)
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remotefs.mount_share(mount_path, smbfs_share,
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export_type='cifs', options=mount_options)
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device_path = self._get_device_path(connection_info)
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connection_info['data']['device_path'] = device_path
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def disconnect_volume(self, connection_info, instance):
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"""Disconnect the volume."""
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smbfs_share = connection_info['data']['export']
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mount_path = self._get_mount_path(connection_info)
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remotefs.unmount_share(mount_path, smbfs_share)
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def _parse_mount_options(self, connection_info):
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mount_options = " ".join(
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[connection_info['data'].get('options') or '',
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CONF.libvirt.smbfs_mount_options])
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if not USERNAME_REGEX.findall(mount_options):
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mount_options = mount_options + ' -o username=guest'
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else:
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# Remove the Domain Name from user name
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mount_options = USERNAME_REGEX.sub(r'\1=\2', mount_options)
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return mount_options.strip(", ").split(' ')
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