128 lines
5.1 KiB
Python
128 lines
5.1 KiB
Python
# Copyright 2012 NTT Data. All Rights Reserved.
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# Copyright 2012 Yahoo! Inc. All Rights Reserved.
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#
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# 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 mock
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from oslo_concurrency import processutils
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from oslo_config import cfg
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from oslo_utils import units
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from nova import exception
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from nova import test
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from nova.virt.libvirt.storage import lvm
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CONF = cfg.CONF
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class LvmTestCase(test.NoDBTestCase):
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@mock.patch('nova.privsep.fs.blockdev_size')
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def test_get_volume_size(self, mock_blockdev_size):
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mock_blockdev_size.return_value = '123456789', None
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size = lvm.get_volume_size('/dev/foo')
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self.assertEqual(123456789, size)
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@mock.patch('nova.privsep.fs.blockdev_size',
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side_effect=processutils.ProcessExecutionError(
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stderr=('blockdev: cannot open /dev/foo: '
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'No such device or address')))
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def test_get_volume_size_not_found(self, mock_blockdev_size):
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self.assertRaises(exception.VolumeBDMPathNotFound,
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lvm.get_volume_size, '/dev/foo')
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@mock.patch('nova.privsep.fs.blockdev_size',
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side_effect=processutils.ProcessExecutionError(
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stderr=('blockdev: cannot open /dev/foo: '
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'No such file or directory')))
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def test_get_volume_size_not_found_file(self, mock_blockdev_size):
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self.assertRaises(exception.VolumeBDMPathNotFound,
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lvm.get_volume_size, '/dev/foo')
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@mock.patch('os.path.exists', return_value=True)
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@mock.patch('nova.privsep.fs.blockdev_size',
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side_effect=processutils.ProcessExecutionError(
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stderr='blockdev: i am sad in other ways'))
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def test_get_volume_size_unexpected_error(self, mock_blockdev_size,
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mock_path_exists):
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self.assertRaises(processutils.ProcessExecutionError,
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lvm.get_volume_size, '/dev/foo')
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@mock.patch('nova.privsep.fs.clear')
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def test_lvm_clear(self, mock_clear):
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def fake_lvm_size(path):
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return lvm_size
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self.stub_out('nova.virt.libvirt.storage.lvm.get_volume_size',
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fake_lvm_size)
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# Test zeroing volumes works
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CONF.set_override('volume_clear', 'zero', 'libvirt')
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lvm_size = 1024
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lvm.clear_volume('/dev/v1')
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mock_clear.assert_has_calls([
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mock.call('/dev/v1', 1024, shred=False)])
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mock_clear.reset_mock()
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# Test volume_clear_size limits the size
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lvm_size = 10485761
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CONF.set_override('volume_clear_size', '1', 'libvirt')
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lvm.clear_volume('/dev/v7')
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mock_clear.assert_has_calls(
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[mock.call('/dev/v7', 1048576, shred=False)])
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mock_clear.reset_mock()
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CONF.set_override('volume_clear_size', '2', 'libvirt')
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lvm_size = 1048576
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lvm.clear_volume('/dev/v9')
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mock_clear.assert_has_calls(
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[mock.call('/dev/v9', 1048576, shred=False)])
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mock_clear.reset_mock()
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# Test volume_clear=shred
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CONF.set_override('volume_clear', 'shred', 'libvirt')
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CONF.set_override('volume_clear_size', '0', 'libvirt')
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lvm_size = 1048576
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lvm.clear_volume('/dev/va')
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mock_clear.assert_has_calls([
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mock.call('/dev/va', 1048576, shred=True)])
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mock_clear.reset_mock()
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CONF.set_override('volume_clear', 'shred', 'libvirt')
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CONF.set_override('volume_clear_size', '1', 'libvirt')
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lvm_size = 10485761
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lvm.clear_volume('/dev/vb')
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mock_clear.assert_has_calls([
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mock.call('/dev/vb', 1 * units.Mi, shred=True)])
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mock_clear.reset_mock()
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# Test volume_clear=none does nothing
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CONF.set_override('volume_clear', 'none', 'libvirt')
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lvm.clear_volume('/dev/vc')
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mock_clear.assert_not_called()
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@mock.patch('nova.privsep.fs.blockdev_size',
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side_effect=processutils.ProcessExecutionError(
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stderr=('blockdev: cannot open /dev/foo: '
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'No such file or directory')))
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def test_lvm_clear_ignore_lvm_not_found(self, mock_blockdev_size):
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lvm.clear_volume('/dev/foo')
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@mock.patch.object(lvm, 'clear_volume')
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@mock.patch('nova.privsep.fs.lvremove',
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side_effect=processutils.ProcessExecutionError('Error'))
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def test_fail_remove_all_logical_volumes(self, mock_clear, mock_lvremove):
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self.assertRaises(exception.VolumesNotRemoved,
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lvm.remove_volumes,
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['vol1', 'vol2', 'vol3'])
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self.assertEqual(3, mock_lvremove.call_count)
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