diff options
| -rw-r--r-- | yardstick/benchmark/contexts/standalone/model.py | 42 | ||||
| -rw-r--r-- | yardstick/common/exceptions.py | 11 | ||||
| -rw-r--r-- | yardstick/tests/unit/benchmark/contexts/standalone/test_model.py | 76 |
3 files changed, 111 insertions, 18 deletions
diff --git a/yardstick/benchmark/contexts/standalone/model.py b/yardstick/benchmark/contexts/standalone/model.py index f18d090d8..4d43f2611 100644 --- a/yardstick/benchmark/contexts/standalone/model.py +++ b/yardstick/benchmark/contexts/standalone/model.py @@ -232,14 +232,40 @@ class Libvirt(object): return ET.tostring(root) @staticmethod - def create_snapshot_qemu(connection, index, vm_image): - # build snapshot image - image = "/var/lib/libvirt/images/%s.qcow2" % index - connection.execute("rm %s" % image) - qemu_template = "qemu-img create -f qcow2 -o backing_file=%s %s" - connection.execute(qemu_template % (vm_image, image)) - - return image + def create_snapshot_qemu(connection, index, base_image): + """Create the snapshot image for a VM using a base image + + :param connection: SSH connection to the remote host + :param index: index of the VM to be spawn + :param base_image: path of the VM base image in the remote host + :return: snapshot image path + """ + vm_image = '/var/lib/libvirt/images/%s.qcow2' % index + connection.execute('rm -- "%s"' % vm_image) + status, _, _ = connection.execute('test -r %s' % base_image) + if status: + if not os.access(base_image, os.R_OK): + raise exceptions.LibvirtQemuImageBaseImageNotPresent( + vm_image=vm_image, base_image=base_image) + # NOTE(ralonsoh): done in two steps to avoid root permission + # issues. + LOG.info('Copy %s from execution host to remote host', base_image) + file_name = os.path.basename(os.path.normpath(base_image)) + connection.put_file(base_image, '/tmp/%s' % file_name) + status, _, error = connection.execute( + 'mv -- "/tmp/%s" "%s"' % (file_name, base_image)) + if status: + raise exceptions.LibvirtQemuImageCreateError( + vm_image=vm_image, base_image=base_image, error=error) + + LOG.info('Convert image %s to %s', base_image, vm_image) + qemu_cmd = ('qemu-img create -f qcow2 -o backing_file=%s %s' % + (base_image, vm_image)) + status, _, error = connection.execute(qemu_cmd) + if status: + raise exceptions.LibvirtQemuImageCreateError( + vm_image=vm_image, base_image=base_image, error=error) + return vm_image @classmethod def build_vm_xml(cls, connection, flavor, vm_name, index): diff --git a/yardstick/common/exceptions.py b/yardstick/common/exceptions.py index 65e444071..597eaf48b 100644 --- a/yardstick/common/exceptions.py +++ b/yardstick/common/exceptions.py @@ -117,6 +117,17 @@ class LibvirtCreateError(YardstickException): message = 'Error creating the virtual machine. Error: %(error)s.' +class LibvirtQemuImageBaseImageNotPresent(YardstickException): + message = ('Error creating the qemu image for %(vm_image)s. Base image: ' + '%(base_image)s. Base image not present in execution host or ' + 'remote host.') + + +class LibvirtQemuImageCreateError(YardstickException): + message = ('Error creating the qemu image for %(vm_image)s. Base image: ' + '%(base_image)s. Error: %(error)s.') + + class ScenarioConfigContextNameNotFound(YardstickException): message = 'Context name "%(context_name)s" not found' diff --git a/yardstick/tests/unit/benchmark/contexts/standalone/test_model.py b/yardstick/tests/unit/benchmark/contexts/standalone/test_model.py index b1dcee209..7078c89b2 100644 --- a/yardstick/tests/unit/benchmark/contexts/standalone/test_model.py +++ b/yardstick/tests/unit/benchmark/contexts/standalone/test_model.py @@ -13,11 +13,11 @@ # limitations under the License. import copy -import mock import os -import unittest import uuid +import mock +import unittest from xml.etree import ElementTree from yardstick import ssh @@ -172,14 +172,70 @@ class ModelLibvirtTestCase(unittest.TestCase): interface_address.get('function')) def test_create_snapshot_qemu(self): - result = "/var/lib/libvirt/images/0.qcow2" - with mock.patch("yardstick.ssh.SSH") as ssh: - ssh_mock = mock.Mock(autospec=ssh.SSH) - ssh_mock.execute = \ - mock.Mock(return_value=(0, "a", "")) - ssh.return_value = ssh_mock - image = model.Libvirt.create_snapshot_qemu(ssh_mock, "0", "ubuntu.img") - self.assertEqual(image, result) + self.mock_ssh.execute = mock.Mock(return_value=(0, 0, 0)) + index = 1 + vm_image = '/var/lib/libvirt/images/%s.qcow2' % index + base_image = '/tmp/base_image' + + model.Libvirt.create_snapshot_qemu(self.mock_ssh, index, base_image) + self.mock_ssh.execute.assert_has_calls([ + mock.call('rm -- "%s"' % vm_image), + mock.call('test -r %s' % base_image), + mock.call('qemu-img create -f qcow2 -o backing_file=%s %s' % + (base_image, vm_image)) + ]) + + @mock.patch.object(os.path, 'basename', return_value='base_image') + @mock.patch.object(os.path, 'normpath') + @mock.patch.object(os, 'access', return_value=True) + def test_create_snapshot_qemu_no_image_remote(self, + mock_os_access, mock_normpath, mock_basename): + self.mock_ssh.execute = mock.Mock( + side_effect=[(0, 0, 0), (1, 0, 0), (0, 0, 0), (0, 0, 0)]) + index = 1 + vm_image = '/var/lib/libvirt/images/%s.qcow2' % index + base_image = '/tmp/base_image' + mock_normpath.return_value = base_image + + model.Libvirt.create_snapshot_qemu(self.mock_ssh, index, base_image) + self.mock_ssh.execute.assert_has_calls([ + mock.call('rm -- "%s"' % vm_image), + mock.call('test -r %s' % base_image), + mock.call('mv -- "/tmp/%s" "%s"' % ('base_image', base_image)), + mock.call('qemu-img create -f qcow2 -o backing_file=%s %s' % + (base_image, vm_image)) + ]) + mock_os_access.assert_called_once_with(base_image, os.R_OK) + mock_normpath.assert_called_once_with(base_image) + mock_basename.assert_has_calls([mock.call(base_image)]) + self.mock_ssh.put_file.assert_called_once_with(base_image, + '/tmp/base_image') + + @mock.patch.object(os, 'access', return_value=False) + def test_create_snapshot_qemu_no_image_local(self, mock_os_access): + self.mock_ssh.execute = mock.Mock(side_effect=[(0, 0, 0), (1, 0, 0)]) + base_image = '/tmp/base_image' + + with self.assertRaises(exceptions.LibvirtQemuImageBaseImageNotPresent): + model.Libvirt.create_snapshot_qemu(self.mock_ssh, 3, base_image) + mock_os_access.assert_called_once_with(base_image, os.R_OK) + + def test_create_snapshot_qemu_error_qemuimg_command(self): + self.mock_ssh.execute = mock.Mock( + side_effect=[(0, 0, 0), (0, 0, 0), (1, 0, 0)]) + index = 1 + vm_image = '/var/lib/libvirt/images/%s.qcow2' % index + base_image = '/tmp/base_image' + + with self.assertRaises(exceptions.LibvirtQemuImageCreateError): + model.Libvirt.create_snapshot_qemu(self.mock_ssh, index, + base_image) + self.mock_ssh.execute.assert_has_calls([ + mock.call('rm -- "%s"' % vm_image), + mock.call('test -r %s' % base_image), + mock.call('qemu-img create -f qcow2 -o backing_file=%s %s' % + (base_image, vm_image)) + ]) @mock.patch.object(model.Libvirt, 'pin_vcpu_for_perf', return_value='4,5') @mock.patch.object(model.Libvirt, 'create_snapshot_qemu', |