145 lines
5.9 KiB
Python
145 lines
5.9 KiB
Python
# Copyright 2015 IBM Corp.
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#
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# All Rights Reserved.
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#
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# 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 mock
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from nova import exception
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from nova import test
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from pypowervm.tests import test_fixtures as pvm_fx
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from pypowervm.tests.test_utils import pvmhttp
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from pypowervm.wrappers import logical_partition as pvm_lpar
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from nova_powervm.virt.powervm import exception as npvmex
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from nova_powervm.virt.powervm import mgmt
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LPAR_HTTPRESP_FILE = "lpar.txt"
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class TestMgmt(test.TestCase):
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def setUp(self):
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super(TestMgmt, self).setUp()
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self.apt = self.useFixture(pvm_fx.AdapterFx()).adpt
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lpar_http = pvmhttp.load_pvm_resp(LPAR_HTTPRESP_FILE, adapter=self.apt)
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self.assertNotEqual(lpar_http, None,
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"Could not load %s " % LPAR_HTTPRESP_FILE)
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self.resp = lpar_http.response
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def test_get_mgmt_partition(self):
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self.apt.read.return_value = self.resp
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mp_wrap = mgmt.get_mgmt_partition(self.apt)
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self.assertIsInstance(mp_wrap, pvm_lpar.LPAR)
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self.assertTrue(mp_wrap.is_mgmt_partition)
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@mock.patch('glob.glob')
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@mock.patch('nova.utils.execute')
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@mock.patch('os.path.realpath')
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def test_discover_vscsi_disk(self, mock_realpath, mock_exec, mock_glob):
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scanpath = '/sys/bus/vio/devices/30000005/host*/scsi_host/host*/scan'
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udid = ('275b5d5f88fa5611e48be9000098be9400'
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'13fb2aa55a2d7b8d150cb1b7b6bc04d6')
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devlink = ('/dev/disk/by-id/scsi-SIBM_3303_NVDISK' + udid)
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mapping = mock.Mock()
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mapping.client_adapter.lpar_slot_num = 5
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mapping.backing_storage.udid = udid
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# Realistically, first glob would return e.g. .../host0/.../host0/...
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# but it doesn't matter for test purposes.
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mock_glob.side_effect = [[scanpath], [devlink]]
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mgmt.discover_vscsi_disk(mapping)
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mock_glob.assert_has_calls(
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[mock.call(scanpath), mock.call('/dev/disk/by-id/*' + udid[-32:])])
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mock_exec.assert_called_with('tee', '-a', scanpath,
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process_input='- - -', run_as_root=True)
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mock_realpath.assert_called_with(devlink)
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@mock.patch('time.sleep')
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@mock.patch('glob.glob')
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@mock.patch('nova.utils.execute')
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def test_discover_vscsi_disk_not_one_result(self, mock_exec, mock_glob,
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mock_sleep):
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"""Zero or more than one disk is found by discover_vscsi_disk."""
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udid = ('275b5d5f88fa5611e48be9000098be9400'
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'13fb2aa55a2d7b8d150cb1b7b6bc04d6')
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mapping = mock.Mock()
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mapping.client_adapter.lpar_slot_num = 5
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mapping.backing_storage.udid = udid
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# No disks found
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mock_glob.side_effect = lambda path: []
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self.assertRaises(npvmex.NoDiskDiscoveryException,
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mgmt.discover_vscsi_disk, mapping)
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self.assertTrue(mock_sleep.call_count)
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# Multiple disks found
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mock_sleep.reset_mock()
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mock_glob.side_effect = [['path'], ['/dev/sde', '/dev/sdf']]
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self.assertRaises(npvmex.UniqueDiskDiscoveryException,
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mgmt.discover_vscsi_disk, mapping)
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self.assertEqual(0, mock_sleep.call_count)
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@mock.patch('time.sleep')
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@mock.patch('os.path.realpath')
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@mock.patch('os.stat')
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@mock.patch('nova.utils.execute')
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def test_remove_block_dev(self, mock_exec, mock_stat, mock_realpath,
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mock_sleep):
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link = '/dev/link/foo'
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realpath = '/dev/sde'
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delpath = '/sys/block/sde/device/delete'
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mock_realpath.return_value = realpath
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# Good path
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mock_stat.side_effect = (None, None, OSError())
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mgmt.remove_block_dev(link)
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mock_realpath.assert_called_with(link)
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mock_stat.assert_has_calls([mock.call(realpath), mock.call(delpath),
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mock.call(realpath)])
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mock_exec.assert_called_with('tee', '-a', delpath, process_input='1',
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run_as_root=True)
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self.assertEqual(0, mock_sleep.call_count)
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# Device param not found
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mock_exec.reset_mock()
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mock_stat.reset_mock()
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mock_stat.side_effect = (OSError(), None, None)
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self.assertRaises(exception.InvalidDevicePath, mgmt.remove_block_dev,
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link)
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# stat was called once; exec was not called
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self.assertEqual(1, mock_stat.call_count)
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self.assertEqual(0, mock_exec.call_count)
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# Delete special file not found
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mock_exec.reset_mock()
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mock_stat.reset_mock()
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mock_stat.side_effect = (None, OSError(), None)
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self.assertRaises(exception.InvalidDevicePath, mgmt.remove_block_dev,
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link)
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# stat was called twice; exec was not called
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self.assertEqual(2, mock_stat.call_count)
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self.assertEqual(0, mock_exec.call_count)
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# Deletion was attempted, but device is still there
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mock_exec.reset_mock()
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mock_stat.reset_mock()
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mock_sleep.reset_mock()
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mock_stat.side_effect = lambda path: 1
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self.assertRaises(
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npvmex.DeviceDeletionException, mgmt.remove_block_dev, link)
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# stat was called many times; exec was called once
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self.assertTrue(mock_stat.call_count > 4)
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self.assertEqual(1, mock_exec.call_count)
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# sleep was called many times
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self.assertTrue(mock_sleep.call_count)
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