79 lines
3.3 KiB
Python
79 lines
3.3 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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from nova import test
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from nova.tests import fixtures as nova_fixtures
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from nova.tests.functional import fixtures as func_fixtures
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from nova.tests.functional import integrated_helpers
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class VolumeBackedResizeDiskDown(test.TestCase,
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integrated_helpers.InstanceHelperMixin):
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"""Regression test for bug 1825020 introduced in Stein.
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This tests a resize scenario where a volume-backed server is resized
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to a flavor with a smaller disk than the flavor used to create the
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server. Since the server is volume-backed, the disk in the new flavor
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should not matter since it won't be used for the guest.
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"""
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def setUp(self):
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super(VolumeBackedResizeDiskDown, self).setUp()
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self.flags(allow_resize_to_same_host=True)
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api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
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api_version='v2.1'))
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self.api = api_fixture.admin_api
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self.useFixture(nova_fixtures.NeutronFixture(self))
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self.useFixture(nova_fixtures.GlanceFixture(self))
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self.useFixture(nova_fixtures.CinderFixture(self))
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self.useFixture(func_fixtures.PlacementFixture())
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self.start_service('conductor')
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self.start_service('scheduler')
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self.start_service('compute')
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def test_volume_backed_resize_disk_down(self):
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# First determine the flavors we're going to use by picking two flavors
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# with different size disks and create a volume-backed server using the
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# flavor with the bigger disk size.
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flavors = self.api.get_flavors()
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flavor1 = flavors[0]
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flavor2 = flavors[1]
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self.assertGreater(flavor2['disk'], flavor1['disk'])
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vol_id = nova_fixtures.CinderFixture.IMAGE_BACKED_VOL
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server = {
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'name': 'test_volume_backed_resize_disk_down',
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'imageRef': '',
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'flavorRef': flavor2['id'],
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'block_device_mapping_v2': [{
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'source_type': 'volume',
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'destination_type': 'volume',
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'boot_index': 0,
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'uuid': vol_id
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}]
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}
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server = self.api.post_server({'server': server})
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self._wait_for_state_change(server, 'ACTIVE')
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# Now try to resize the server with the flavor that has smaller disk.
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# This should be allowed since the server is volume-backed and the
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# disk size in the flavor shouldn't matter.
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data = {'resize': {'flavorRef': flavor1['id']}}
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self.api.post_server_action(server['id'], data)
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self._wait_for_state_change(server, 'VERIFY_RESIZE')
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# Now confirm the resize just to complete the operation.
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self.api.post_server_action(server['id'], {'confirmResize': None})
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self._wait_for_state_change(server, 'ACTIVE')
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