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Merge "Add checks for volume status when rebuilding" into stable/train

changes/22/750222/1
Zuul 3 weeks ago
committed by Gerrit Code Review
parent
commit
5cebdb7b71
4 changed files with 95 additions and 4 deletions
  1. +1
    -0
      nova/api/openstack/compute/servers.py
  2. +19
    -4
      nova/compute/api.py
  3. +15
    -0
      nova/tests/unit/api/openstack/compute/test_server_actions.py
  4. +60
    -0
      nova/tests/unit/compute/test_compute_api.py

+ 1
- 0
nova/api/openstack/compute/servers.py View File

@@ -1139,6 +1139,7 @@ class ServersController(wsgi.Controller):
exception.ImageNotActive,
exception.ImageUnacceptable,
exception.InvalidMetadata,
exception.InvalidVolume,
) as error:
raise exc.HTTPBadRequest(explanation=error.format_message())
except INVALID_FLAVOR_IMAGE_EXCEPTIONS as error:


+ 19
- 4
nova/compute/api.py View File

@@ -3346,6 +3346,12 @@ class API(base.Base):
self._checks_for_create_and_rebuild(context, image_id, image,
flavor, metadata, files_to_inject, root_bdm)

# Check the state of the volume. If it is not in-use, an exception
# will occur when creating attachment during reconstruction,
# resulting in the failure of reconstruction and the instance
# turning into an error state.
self._check_volume_status(context, bdms)

# NOTE(sean-k-mooney): When we rebuild with a new image we need to
# validate that the NUMA topology does not change as we do a NOOP claim
# in resource tracker. As such we cannot allow the resource usage or
@@ -3445,6 +3451,17 @@ class API(base.Base):
preserve_ephemeral=preserve_ephemeral, host=host,
request_spec=request_spec)

def _check_volume_status(self, context, bdms):
"""Check whether the status of the volume is "in-use".

:param context: A context.RequestContext
:param bdms: BlockDeviceMappingList of BDMs for the instance
"""
for bdm in bdms:
if bdm.volume_id:
vol = self.volume_api.get(context, bdm.volume_id)
self.volume_api.check_attached(context, vol)

@staticmethod
def _validate_numa_rebuild(instance, image, flavor):
"""validates that the NUMA constraints do not change on rebuild.
@@ -3963,10 +3980,8 @@ class API(base.Base):

bdms = objects.BlockDeviceMappingList.get_by_instance_uuid(
context, instance.uuid)
for bdm in bdms:
if bdm.volume_id:
vol = self.volume_api.get(context, bdm.volume_id)
self.volume_api.check_attached(context, vol)
self._check_volume_status(context, bdms)

if compute_utils.is_volume_backed_instance(context, instance, bdms):
reason = _("Cannot rescue a volume-backed instance")
raise exception.InstanceNotRescuable(instance_id=instance.uuid,


+ 15
- 0
nova/tests/unit/api/openstack/compute/test_server_actions.py View File

@@ -642,6 +642,21 @@ class ServerActionsControllerTestV21(test.TestCase):
self.controller._action_rebuild,
self.req, FAKE_UUID, body=body)

@mock.patch.object(compute_api.API, 'rebuild')
def test_rebuild_raise_invalid_volume_exc(self, mock_rebuild):
"""Make sure that we can't rebuild with an InvalidVolume exception."""
body = {
"rebuild": {
"imageRef": self._image_href,
},
}

mock_rebuild.side_effect = exception.InvalidVolume('error')

self.assertRaises(webob.exc.HTTPBadRequest,
self.controller._action_rebuild,
self.req, FAKE_UUID, body=body)

def test_resize_server(self):

body = dict(resize=dict(flavorRef="http://localhost/3"))


+ 60
- 0
nova/tests/unit/compute/test_compute_api.py View File

@@ -3612,6 +3612,66 @@ class _ComputeAPIUnitTestMixIn(object):
"new password",
auto_disk_config=True)

@mock.patch.object(objects.RequestSpec, 'get_by_instance_uuid')
@mock.patch.object(objects.Instance, 'save')
@mock.patch.object(objects.Instance, 'get_flavor')
@mock.patch.object(objects.BlockDeviceMappingList, 'get_by_instance_uuid')
@mock.patch.object(compute_api.API, '_get_image')
@mock.patch.object(compute_api.API, '_check_auto_disk_config')
@mock.patch.object(compute_api.API, '_checks_for_create_and_rebuild')
@mock.patch.object(compute_api.API, '_record_action_start')
def test_rebuild_with_invalid_volume(self, _record_action_start,
_checks_for_create_and_rebuild, _check_auto_disk_config,
mock_get_image, mock_get_bdms, get_flavor,
instance_save, req_spec_get_by_inst_uuid):
"""Test a negative scenario where the instance has an
invalid volume.
"""
instance = fake_instance.fake_instance_obj(
self.context, vm_state=vm_states.ACTIVE, cell_name='fake-cell',
launched_at=timeutils.utcnow(),
system_metadata={}, image_ref='foo',
expected_attrs=['system_metadata'])

bdms = objects.BlockDeviceMappingList(objects=[
objects.BlockDeviceMapping(
boot_index=None, image_id=None,
source_type='volume', destination_type='volume',
volume_type=None, snapshot_id=None,
volume_id=uuids.volume_id, volume_size=None)])
mock_get_bdms.return_value = bdms

get_flavor.return_value = test_flavor.fake_flavor
flavor = instance.get_flavor()

image_href = 'foo'
image = {
"min_ram": 10, "min_disk": 1,
"properties": {
'architecture': fields_obj.Architecture.X86_64}}
mock_get_image.return_value = (None, image)

fake_spec = objects.RequestSpec()
req_spec_get_by_inst_uuid.return_value = fake_spec

fake_volume = {'id': uuids.volume_id, 'status': 'retyping'}
with mock.patch.object(self.compute_api.volume_api, 'get',
return_value=fake_volume) as mock_get_volume:
self.assertRaises(exception.InvalidVolume,
self.compute_api.rebuild,
self.context,
instance,
image_href,
"new password")
self.assertIsNone(instance.task_state)
mock_get_bdms.assert_called_once_with(self.context,
instance.uuid)
mock_get_volume.assert_called_once_with(self.context,
uuids.volume_id)
_check_auto_disk_config.assert_called_once_with(image=image)
_checks_for_create_and_rebuild.assert_called_once_with(
self.context, None, image, flavor, {}, [], None)

@mock.patch.object(objects.RequestSpec, 'get_by_instance_uuid')
@mock.patch.object(objects.Instance, 'save')
@mock.patch.object(objects.Instance, 'get_flavor')


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