123 lines
5.6 KiB
Python
123 lines
5.6 KiB
Python
# Copyright 2013 IBM Corp.
|
|
#
|
|
# 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.
|
|
|
|
import os
|
|
|
|
import mock
|
|
from oslo_concurrency import processutils
|
|
import six
|
|
|
|
from nova import exception
|
|
from nova import test
|
|
from nova import utils
|
|
from nova.virt import images
|
|
|
|
|
|
class QemuTestCase(test.NoDBTestCase):
|
|
def test_qemu_info_with_bad_path(self):
|
|
self.assertRaises(exception.DiskNotFound,
|
|
images.qemu_img_info,
|
|
'/path/that/does/not/exist')
|
|
|
|
@mock.patch.object(utils, 'execute')
|
|
@mock.patch.object(os.path, 'exists', return_value=True)
|
|
def test_qemu_info_with_errors(self, path_exists, mock_exec):
|
|
err = processutils.ProcessExecutionError(
|
|
exit_code=1, stderr='No such file or directory')
|
|
mock_exec.side_effect = err
|
|
self.assertRaises(exception.DiskNotFound,
|
|
images.qemu_img_info,
|
|
'/fake/path')
|
|
|
|
@mock.patch.object(os.path, 'exists', return_value=True)
|
|
@mock.patch.object(utils, 'execute',
|
|
return_value=('stdout', None))
|
|
def test_qemu_info_with_no_errors(self, path_exists,
|
|
utils_execute):
|
|
image_info = images.qemu_img_info('/fake/path')
|
|
self.assertTrue(image_info)
|
|
self.assertTrue(str(image_info))
|
|
|
|
@mock.patch('nova.privsep.utils.supports_direct_io', return_value=True)
|
|
@mock.patch.object(processutils, 'execute',
|
|
side_effect=processutils.ProcessExecutionError)
|
|
def test_convert_image_with_errors(self, mocked_execute, mock_direct_io):
|
|
self.assertRaises(exception.ImageUnacceptable,
|
|
images.convert_image,
|
|
'/path/that/does/not/exist',
|
|
'/other/path/that/does/not/exist',
|
|
'qcow2',
|
|
'raw')
|
|
|
|
@mock.patch.object(utils, 'execute')
|
|
@mock.patch.object(os.path, 'exists', return_value=True)
|
|
def test_convert_image_with_prlimit_fail(self, path, mocked_execute):
|
|
mocked_execute.side_effect = \
|
|
processutils.ProcessExecutionError(exit_code=-9)
|
|
exc = self.assertRaises(exception.InvalidDiskInfo,
|
|
images.qemu_img_info,
|
|
'/fake/path')
|
|
self.assertIn('qemu-img aborted by prlimits', six.text_type(exc))
|
|
|
|
@mock.patch.object(utils, 'execute')
|
|
@mock.patch.object(os.path, 'exists', return_value=True)
|
|
def test_qemu_img_info_with_disk_not_found(self, exists, mocked_execute):
|
|
"""Tests that the initial os.path.exists check passes but the qemu-img
|
|
command fails because the path is gone by the time the command runs.
|
|
"""
|
|
path = '/opt/stack/data/nova/instances/some-uuid/disk'
|
|
stderr = (u"qemu-img: Could not open "
|
|
"'/opt/stack/data/nova/instances/some-uuid/disk': "
|
|
"Could not open '/opt/stack/data/nova/instances/some-uuid/"
|
|
"disk': No such file or directory\n")
|
|
mocked_execute.side_effect = (
|
|
processutils.ProcessExecutionError(
|
|
exit_code=1, stderr=stderr))
|
|
self.assertRaises(exception.DiskNotFound, images.qemu_img_info, path)
|
|
exists.assert_called_once_with(path)
|
|
mocked_execute.assert_called_once()
|
|
|
|
@mock.patch.object(images, 'convert_image',
|
|
side_effect=exception.ImageUnacceptable)
|
|
@mock.patch.object(images, 'qemu_img_info')
|
|
@mock.patch.object(images, 'fetch')
|
|
def test_fetch_to_raw_errors(self, convert_image, qemu_img_info, fetch):
|
|
qemu_img_info.backing_file = None
|
|
qemu_img_info.file_format = 'qcow2'
|
|
qemu_img_info.virtual_size = 20
|
|
self.assertRaisesRegex(exception.ImageUnacceptable,
|
|
'Image href123 is unacceptable.*',
|
|
images.fetch_to_raw,
|
|
None, 'href123', '/no/path')
|
|
|
|
@mock.patch('nova.privsep.utils.supports_direct_io', return_value=True)
|
|
@mock.patch('oslo_concurrency.processutils.execute')
|
|
def test_convert_image_with_direct_io_support(self, mock_execute,
|
|
mock_direct_io):
|
|
images._convert_image('source', 'dest', 'in_format', 'out_format',
|
|
run_as_root=False)
|
|
expected = ('qemu-img', 'convert', '-t', 'none', '-O', 'out_format',
|
|
'-f', 'in_format', 'source', 'dest')
|
|
self.assertTupleEqual(expected, mock_execute.call_args[0])
|
|
|
|
@mock.patch('nova.privsep.utils.supports_direct_io', return_value=False)
|
|
@mock.patch('oslo_concurrency.processutils.execute')
|
|
def test_convert_image_without_direct_io_support(self, mock_execute,
|
|
mock_direct_io):
|
|
images._convert_image('source', 'dest', 'in_format', 'out_format',
|
|
run_as_root=False)
|
|
expected = ('qemu-img', 'convert', '-t', 'writethrough',
|
|
'-O', 'out_format', '-f', 'in_format', 'source', 'dest')
|
|
self.assertTupleEqual(expected, mock_execute.call_args[0])
|