109 lines
5.3 KiB
Python
109 lines
5.3 KiB
Python
# 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 time
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from nova.tests import fixtures as nova_fixtures
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from nova.tests.functional.api import client
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from nova.tests.functional import integrated_helpers
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class ConfigurableMaxDiskDevicesTest(integrated_helpers._IntegratedTestBase):
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def _wait_for_volume_attach(self, server_id, volume_id):
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for i in range(0, 100):
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server = self.api.get_server(server_id)
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attached_vols = [vol['id'] for vol in
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server['os-extended-volumes:volumes_attached']]
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if volume_id in attached_vols:
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return
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time.sleep(.1)
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self.fail('Timed out waiting for volume %s to be attached to '
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'server %s. Currently attached volumes: %s' %
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(volume_id, server_id, attached_vols))
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def test_boot_from_volume(self):
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# Set the maximum to 1 and boot from 1 volume. This should pass.
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self.flags(max_disk_devices_to_attach=1, group='compute')
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server = self._build_server(flavor_id='1')
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server['imageRef'] = ''
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volume_uuid = nova_fixtures.CinderFixture.IMAGE_BACKED_VOL
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bdm = {'boot_index': 0,
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'uuid': volume_uuid,
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'source_type': 'volume',
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'destination_type': 'volume'}
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server['block_device_mapping_v2'] = [bdm]
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created_server = self.api.post_server({"server": server})
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self._wait_for_state_change(created_server, 'ACTIVE')
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def test_boot_from_volume_plus_attach_max_exceeded(self):
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# Set the maximum to 1, boot from 1 volume, and attach one volume.
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# This should fail because it's trying to attach 2 disk devices.
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self.flags(max_disk_devices_to_attach=1, group='compute')
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server = self._build_server(flavor_id='1')
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server['imageRef'] = ''
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vol_img_id = nova_fixtures.CinderFixture.IMAGE_BACKED_VOL
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boot_vol = {'boot_index': 0,
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'uuid': vol_img_id,
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'source_type': 'volume',
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'destination_type': 'volume'}
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vol_id = '9a695496-44aa-4404-b2cc-ccab2501f87e'
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other_vol = {'uuid': vol_id,
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'source_type': 'volume',
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'destination_type': 'volume'}
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server['block_device_mapping_v2'] = [boot_vol, other_vol]
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created_server = self.api.post_server({"server": server})
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server_id = created_server['id']
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# Server should go into ERROR state
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self._wait_for_state_change(created_server, 'ERROR')
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# Verify the instance fault
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server = self.api.get_server(server_id)
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# If anything fails during _prep_block_device, a 500 internal server
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# error is raised.
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self.assertEqual(500, server['fault']['code'])
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expected = ('Build of instance %s aborted: The maximum allowed number '
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'of disk devices (1) to attach to a single instance has '
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'been exceeded.' % server_id)
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self.assertIn(expected, server['fault']['message'])
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# Verify no volumes are attached (this is a generator)
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attached_vols = list(self.cinder.volume_ids_for_instance(server_id))
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self.assertNotIn(vol_img_id, attached_vols)
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self.assertNotIn(vol_id, attached_vols)
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def test_attach(self):
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# Set the maximum to 2. This will allow one disk device for the local
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# disk of the server and also one volume to attach. A second volume
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# attach request will fail.
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self.flags(max_disk_devices_to_attach=2, group='compute')
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server = self._build_server(flavor_id='1')
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created_server = self.api.post_server({"server": server})
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server_id = created_server['id']
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self._wait_for_state_change(created_server, 'ACTIVE')
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# Attach one volume, should pass.
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vol_id = '9a695496-44aa-4404-b2cc-ccab2501f87e'
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self.api.post_server_volume(
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server_id, dict(volumeAttachment=dict(volumeId=vol_id)))
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self._wait_for_volume_attach(server_id, vol_id)
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# Attach a second volume, should fail fast in the API.
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other_vol_id = 'f2063123-0f88-463c-ac9d-74127faebcbe'
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ex = self.assertRaises(
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client.OpenStackApiException, self.api.post_server_volume,
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server_id, dict(volumeAttachment=dict(volumeId=other_vol_id)))
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self.assertEqual(403, ex.response.status_code)
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expected = ('The maximum allowed number of disk devices (2) to attach '
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'to a single instance has been exceeded.')
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self.assertIn(expected, str(ex))
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# Verify only one volume is attached (this is a generator)
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attached_vols = list(self.cinder.volume_ids_for_instance(server_id))
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self.assertIn(vol_id, attached_vols)
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self.assertNotIn(other_vol_id, attached_vols)
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