def test_get_cached_image(self, mock_create_path, mock_synchronized,
mock_join, mock_exists):
mock_join.return_value = self._FAKE_BASE_PATH
mock_exists.side_effect = ([False] * len(constants.ALL_DISK_FORMATS) +
[True])
imagecache.get_cached_image(self._context, self._instance)
mock_synchronized.assert_called_once_with(self._FAKE_BASE_PATH)
mock_synchronized().assert_called_once_with(imagecache._fetch_image)
mock_synchronized.reset_mock()
imagecache.get_cached_image(self._context, self._instance)
self.assertEqual(0, mock_synchronized.call_count)
self.assertEqual(2, mock_create_path.call_count)
def test_get_cached_image(self, mock_create_path, mock_synchronized,
mock_join, mock_exists):
mock_join.return_value = self._FAKE_BASE_PATH
mock_exists.side_effect = ([False] * len(constants.ALL_DISK_FORMATS) +
[True])
imagecache.get_cached_image(self._context, self._instance)
mock_synchronized.assert_called_once_with(self._FAKE_BASE_PATH)
mock_synchronized().assert_called_once_with(imagecache._fetch_image)
mock_synchronized.reset_mock()
imagecache.get_cached_image(self._context, self._instance)
self.assertEqual(0, mock_synchronized.call_count)
self.assertEqual(2, mock_create_path.call_count)
def finish_migration(self, context, migration, instance, disk_info,
network_info, image_meta, resize_instance=False,
block_device_info=None):
"""Completes a resize."""
LOG.debug("`Finish migration` method called.")
if volumeutils.ebs_root_in_block_devices(block_device_info):
root_path = None
else:
root_path = pathutils.lookup_root_vhd_path(instance)
if not root_path:
raise vbox_exc.VBoxException(
i18n._("Cannot find boot VHD file for instance: %s") %
instance.name)
base_disk_path = imagecache.get_cached_image(context, instance)
self._check_disk(root_path, base_disk_path)
ephemeral_path = pathutils.lookup_ephemeral_vhd_path(instance)
if not ephemeral_path:
ephemeral_path = self._vbox_ops.create_ephemeral_disk(instance)
if resize_instance:
self._resize_disk(instance, instance.root_gb * units.Ki, root_path)
self._resize_disk(instance,
instance.get('ephemeral_gb', 0) * units.Ki,
ephemeral_path)
self._vbox_ops.create_instance(instance, image_meta, network_info,
overwrite=False)
self._vbox_ops.storage_setup(instance, root_path, ephemeral_path,
block_device_info)
def create_root_disk(self, context, instance):
base_vhd_path = imagecache.get_cached_image(context, instance)
base_info = vhdutils.disk_info(base_vhd_path)
root_vhd_path = pathutils.root_disk_path(
instance, disk_format=base_info[constants.VHD_IMAGE_TYPE])
if CONF.use_cow_images:
LOG.debug(
"Creating differencing VHD. Parent: %(parent)s, "
"Target: %(target)s", {
'parent': base_vhd_path,
'target': root_vhd_path
},
instance=instance)
self._vbox_manage.create_hd(
filename=root_vhd_path,
# disk_format=base_info[constants.VHD_IMAGE_TYPE],
variant=constants.VARIANT_STANDARD,
parent=base_vhd_path)
else:
LOG.debug(
"Cloning VHD image %(base)s to target: %(target)s", {
'base': base_vhd_path,
'target': root_vhd_path
},
instance=instance)
self._vbox_manage.clone_hd(
vhd_path=base_vhd_path,
new_vdh_path=root_vhd_path,
disk_format=base_info[constants.VHD_IMAGE_TYPE],
variant=constants.VARIANT_STANDARD)
# Resize image if is necesary
disk_format = vhdutils.get_image_type(root_vhd_path)
if instance.root_gb and disk_format in (constants.DISK_FORMAT_VDI,
constants.DISK_FORMAT_VHD):
base_vhd_size = base_info[constants.VHD_CAPACITY] / units.Mi
root_vhd_size = instance.root_gb * units.Ki
if vhdutils.is_resize_required(
disk_path=root_vhd_path,
old_size=base_vhd_size,
new_size=root_vhd_size,
instance=instance):
self._vbox_manage.modify_hd(
root_vhd_path, constants.FIELD_HD_RESIZE_MB, root_vhd_size)
return root_vhd_path
def create_root_disk(self, context, instance):
base_vhd_path = imagecache.get_cached_image(context, instance)
base_info = vhdutils.disk_info(base_vhd_path)
root_vhd_path = pathutils.root_disk_path(
instance, disk_format=base_info[constants.VHD_IMAGE_TYPE])
if CONF.use_cow_images:
LOG.debug(
"Creating differencing VHD. Parent: %(parent)s, "
"Target: %(target)s", {
'parent': base_vhd_path,
'target': root_vhd_path
},
instance=instance)
self._vbox_manage.create_hd(
filename=root_vhd_path,
# disk_format=base_info[constants.VHD_IMAGE_TYPE],
variant=constants.VARIANT_STANDARD,
parent=base_vhd_path)
else:
LOG.debug("Cloning VHD image %(base)s to target: %(target)s", {
'base': base_vhd_path,
'target': root_vhd_path
},
instance=instance)
self._vbox_manage.clone_hd(
vhd_path=base_vhd_path,
new_vdh_path=root_vhd_path,
disk_format=base_info[constants.VHD_IMAGE_TYPE],
variant=constants.VARIANT_STANDARD)
# Resize image if is necesary
disk_format = vhdutils.get_image_type(root_vhd_path)
if instance.root_gb and disk_format in (constants.DISK_FORMAT_VDI,
constants.DISK_FORMAT_VHD):
base_vhd_size = base_info[constants.VHD_CAPACITY] / units.Mi
root_vhd_size = instance.root_gb * units.Ki
if vhdutils.is_resize_required(disk_path=root_vhd_path,
old_size=base_vhd_size,
new_size=root_vhd_size,
instance=instance):
self._vbox_manage.modify_hd(root_vhd_path,
constants.FIELD_HD_RESIZE_MB,
root_vhd_size)
return root_vhd_path
def finish_migration(self,
context,
migration,
instance,
disk_info,
network_info,
image_meta,
resize_instance=False,
block_device_info=None):
"""Completes a resize."""
LOG.debug("`Finish migration` method called.")
if volumeutils.ebs_root_in_block_devices(block_device_info):
root_path = None
else:
root_path = pathutils.lookup_root_vhd_path(instance)
if not root_path:
raise vbox_exc.VBoxException(
i18n._("Cannot find boot VHD file for instance: %s") %
instance.name)
base_disk_path = imagecache.get_cached_image(context, instance)
self._check_disk(root_path, base_disk_path)
ephemeral_path = pathutils.lookup_ephemeral_vhd_path(instance)
if not ephemeral_path:
ephemeral_path = self._vbox_ops.create_ephemeral_disk(instance)
if resize_instance:
self._resize_disk(instance, instance.root_gb * units.Ki, root_path)
self._resize_disk(instance,
instance.get('ephemeral_gb', 0) * units.Ki,
ephemeral_path)
self._vbox_ops.create_instance(instance,
image_meta,
network_info,
overwrite=False)
self._vbox_ops.storage_setup(instance, root_path, ephemeral_path,
block_device_info)