Merge "ScalityVolume:fix how remote FS mount is detected"
This commit is contained in:
commit
5ba399f7ad
nova
@ -12,8 +12,9 @@
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import os
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import fixtures
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import mock
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import nova.exception
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from nova.tests.unit.virt.libvirt.volume import test_volume
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from nova.virt.libvirt.volume import scality
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@ -21,10 +22,19 @@ from nova.virt.libvirt.volume import scality
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class LibvirtScalityVolumeDriverTestCase(
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test_volume.LibvirtVolumeBaseTestCase):
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def test_libvirt_scality_driver(self):
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tempdir = self.useFixture(fixtures.TempDir()).path
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TEST_MOUNT = os.path.join(tempdir, 'fake_mount')
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TEST_CONFIG = os.path.join(tempdir, 'fake_config')
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def setUp(self):
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super(LibvirtScalityVolumeDriverTestCase, self).setUp()
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self.scality_sofs_config = 'fake.conf'
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self.scality_sofs_mount_point = '/fake'
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self.flags(scality_sofs_config=self.scality_sofs_config,
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scality_sofs_mount_point=self.scality_sofs_mount_point,
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group='libvirt')
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self.drv = scality.LibvirtScalityVolumeDriver(self.fake_conn)
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@mock.patch('six.moves.urllib.request.urlopen')
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def test_connect_volume(self, mock_urlopen):
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TEST_VOLDIR = 'volumes'
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TEST_VOLNAME = 'volume_name'
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TEST_CONN_INFO = {
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@ -32,11 +42,9 @@ class LibvirtScalityVolumeDriverTestCase(
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'sofs_path': os.path.join(TEST_VOLDIR, TEST_VOLNAME)
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}
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}
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TEST_VOLPATH = os.path.join(TEST_MOUNT,
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TEST_VOLPATH = os.path.join(self.scality_sofs_mount_point,
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TEST_VOLDIR,
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TEST_VOLNAME)
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open(TEST_CONFIG, "w+").close()
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os.makedirs(os.path.join(TEST_MOUNT, 'sys'))
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def _access_wrapper(path, flags):
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if path == '/sbin/mount.sofs':
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@ -45,16 +53,62 @@ class LibvirtScalityVolumeDriverTestCase(
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return os.access(path, flags)
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self.stubs.Set(os, 'access', _access_wrapper)
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self.flags(scality_sofs_config=TEST_CONFIG,
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scality_sofs_mount_point=TEST_MOUNT,
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group='libvirt')
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driver = scality.LibvirtScalityVolumeDriver(self.fake_conn)
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driver.connect_volume(TEST_CONN_INFO, self.disk_info)
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device_path = os.path.join(TEST_MOUNT,
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with mock.patch.object(self.drv, '_mount_sofs'):
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self.drv.connect_volume(TEST_CONN_INFO, self.disk_info)
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device_path = os.path.join(self.scality_sofs_mount_point,
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TEST_CONN_INFO['data']['sofs_path'])
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self.assertEqual(TEST_CONN_INFO['data']['device_path'], device_path)
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conf = driver.get_config(TEST_CONN_INFO, self.disk_info)
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conf = self.drv.get_config(TEST_CONN_INFO, self.disk_info)
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tree = conf.format_dom()
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self._assertFileTypeEquals(tree, TEST_VOLPATH)
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@mock.patch('nova.utils.execute')
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def test_mount_sofs_when_sofs_already_mounted(self, mock_execute):
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with mock.patch.object(self.drv, '_sofs_is_mounted') as m_is_mounted:
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m_is_mounted.return_value = True
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self.drv._mount_sofs()
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mock_execute.assert_called_once_with('mkdir', '-p',
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self.scality_sofs_mount_point)
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self.assertEqual(1, m_is_mounted.call_count)
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@mock.patch('nova.utils.execute', mock.Mock())
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def test_mount_sofs_when_mount_fails(self):
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with mock.patch.object(self.drv, '_sofs_is_mounted') as m_is_mounted:
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m_is_mounted.side_effect = [False, False]
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self.assertRaises(nova.exception.NovaException,
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self.drv._mount_sofs)
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self.assertEqual(2, m_is_mounted.call_count)
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@mock.patch('nova.utils.execute')
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def test_mount_sofs_when_sofs_is_not_mounted(self, mock_execute):
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with mock.patch.object(self.drv, '_sofs_is_mounted') as m_is_mounted:
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m_is_mounted.side_effect = [False, True]
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self.drv._mount_sofs()
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self.assertEqual(2, m_is_mounted.call_count)
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self.assertEqual(2, mock_execute.call_count)
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expected_calls = [
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mock.call('mkdir', '-p', self.scality_sofs_mount_point),
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mock.call('mount', '-t', 'sofs', self.scality_sofs_config,
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self.scality_sofs_mount_point, run_as_root=True)
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]
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mock_execute.assert_has_calls(expected_calls)
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def test_sofs_is_mounted_when_sofs_is_not_mounted(self):
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mock_open = mock.mock_open(read_data='tmpfs /dev/shm\n')
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with mock.patch('io.open', mock_open) as mock_open:
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self.assertFalse(self.drv._sofs_is_mounted())
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def test_sofs_is_mounted_when_sofs_is_mounted(self):
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proc_mount = '/dev/fuse ' + self.scality_sofs_mount_point + '\n'
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mock_open = mock.mock_open(read_data=proc_mount)
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with mock.patch('io.open', mock_open) as mock_open:
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self.assertTrue(self.drv._sofs_is_mounted())
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@ -10,6 +10,7 @@
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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 io
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import os
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from oslo_config import cfg
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@ -118,17 +119,27 @@ class LibvirtScalityVolumeDriver(fs.LibvirtBaseFileSystemVolumeDriver):
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LOG.warn(msg)
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raise exception.NovaException(msg)
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def _sofs_is_mounted(self):
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"""Detects whether Scality SOFS is already mounted."""
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mount_path = CONF.libvirt.scality_sofs_mount_point.rstrip('/')
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with io.open('/proc/mounts') as mounts:
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for mount in mounts.readlines():
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parts = mount.split()
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if (parts[0].endswith('fuse') and
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parts[1].rstrip('/') == mount_path):
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return True
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return False
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def _mount_sofs(self):
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config = CONF.libvirt.scality_sofs_config
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mount_path = CONF.libvirt.scality_sofs_mount_point
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sysdir = os.path.join(mount_path, 'sys')
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if not os.path.isdir(mount_path):
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utils.execute('mkdir', '-p', mount_path)
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if not os.path.isdir(sysdir):
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if not self._sofs_is_mounted():
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utils.execute('mount', '-t', 'sofs', config, mount_path,
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run_as_root=True)
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if not os.path.isdir(sysdir):
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msg = _("Cannot mount Scality SOFS, check syslog for errors")
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LOG.warn(msg)
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raise exception.NovaException(msg)
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if not self._sofs_is_mounted():
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msg = _("Cannot mount Scality SOFS, check syslog for errors")
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LOG.warn(msg)
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raise exception.NovaException(msg)
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