libvirt: move the LibvirtGPFSVolumeDriver into it's own module

Part of blueprint consolidate-libvirt-fs-volume-drivers

Change-Id: If275ed3101a76c0ccbb42df4261e5125eed74674

nova/tests/unit/virt/libvirt/volume/test_gpfs.py

@@ -0,0 +1,32 @@
+#    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 nova.tests.unit.virt.libvirt.volume import test_volume
+from nova.virt.libvirt.volume import gpfs
+
+
+class LibvirtGPFSVolumeDriverTestCase(test_volume.LibvirtVolumeBaseTestCase):
+
+    def test_libvirt_gpfs_driver_get_config(self):
+        libvirt_driver = gpfs.LibvirtGPFSVolumeDriver(self.fake_conn)
+        connection_info = {
+            'driver_volume_type': 'gpfs',
+            'data': {
+                'device_path': '/gpfs/foo',
+            },
+            'serial': 'fake_serial',
+        }
+        conf = libvirt_driver.get_config(connection_info, self.disk_info)
+        tree = conf.format_dom()
+        self.assertEqual('file', tree.get('type'))
+        self.assertEqual('fake_serial', tree.find('./serial').text)

nova/tests/unit/virt/libvirt/volume/test_volume.py

@@ -922,17 +922,3 @@ Setting up iSCSI targets: unused
              export_string, export_mnt_base),
             ('umount', export_mnt_base)]
         self.assertEqual(expected_commands, self.executes)
-
-    def test_libvirt_gpfs_driver_get_config(self):
-        libvirt_driver = volume.LibvirtGPFSVolumeDriver(self.fake_conn)
-        connection_info = {
-            'driver_volume_type': 'gpfs',
-            'data': {
-                'device_path': '/gpfs/foo',
-            },
-            'serial': 'fake_serial',
-        }
-        conf = libvirt_driver.get_config(connection_info, self.disk_info)
-        tree = conf.format_dom()
-        self.assertEqual('file', tree.get('type'))
-        self.assertEqual('fake_serial', tree.find('./serial').text)

nova/virt/libvirt/driver.py

@@ -285,7 +285,7 @@ libvirt_volume_drivers = [
     'fibre_channel='
         'nova.virt.libvirt.volume.volume.LibvirtFibreChannelVolumeDriver',
     'scality=nova.virt.libvirt.volume.volume.LibvirtScalityVolumeDriver',
-    'gpfs=nova.virt.libvirt.volume.volume.LibvirtGPFSVolumeDriver',
+    'gpfs=nova.virt.libvirt.volume.gpfs.LibvirtGPFSVolumeDriver',
     'quobyte=nova.virt.libvirt.volume.quobyte.LibvirtQuobyteVolumeDriver',
 ]
 

nova/virt/libvirt/volume/gpfs.py

@@ -0,0 +1,28 @@
+#    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 nova.virt.libvirt.volume import volume as libvirt_volume
+
+
+class LibvirtGPFSVolumeDriver(libvirt_volume.LibvirtBaseVolumeDriver):
+    """Class for volumes backed by gpfs volume."""
+    def __init__(self, connection):
+        super(LibvirtGPFSVolumeDriver,
+              self).__init__(connection, is_block_dev=False)
+
+    def get_config(self, connection_info, disk_info):
+        """Returns xml for libvirt."""
+        conf = super(LibvirtGPFSVolumeDriver,
+                     self).get_config(connection_info, disk_info)
+        conf.source_type = "file"
+        conf.source_path = connection_info['data']['device_path']
+        return conf

nova/virt/libvirt/volume/volume.py

@@ -763,18 +763,3 @@ class LibvirtScalityVolumeDriver(LibvirtBaseVolumeDriver):
             msg = _("Cannot mount Scality SOFS, check syslog for errors")
             LOG.warn(msg)
             raise exception.NovaException(msg)
-
-
-class LibvirtGPFSVolumeDriver(LibvirtBaseVolumeDriver):
-    """Class for volumes backed by gpfs volume."""
-    def __init__(self, connection):
-        super(LibvirtGPFSVolumeDriver,
-              self).__init__(connection, is_block_dev=False)
-
-    def get_config(self, connection_info, disk_info):
-        """Returns xml for libvirt."""
-        conf = super(LibvirtGPFSVolumeDriver,
-                     self).get_config(connection_info, disk_info)
-        conf.source_type = "file"
-        conf.source_path = connection_info['data']['device_path']
-        return conf