288 lines
12 KiB
Python
288 lines
12 KiB
Python
# (c) Copyright 2013 Hewlett-Packard Development Company, L.P.
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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 os
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import os.path
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import mock
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from oslo_log import log as logging
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from os_brick import exception
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from os_brick.initiator import linuxscsi
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from os_brick.tests import base
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LOG = logging.getLogger(__name__)
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class LinuxSCSITestCase(base.TestCase):
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def setUp(self):
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super(LinuxSCSITestCase, self).setUp()
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self.cmds = []
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mock.patch.object(os.path, 'realpath', return_value='/dev/sdc').start()
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mock.patch.object(os, 'stat', returns=os.stat(__file__)).start()
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self.addCleanup(mock.patch.stopall)
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self.linuxscsi = linuxscsi.LinuxSCSI(None, execute=self.fake_execute)
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def fake_execute(self, *cmd, **kwargs):
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self.cmds.append(" ".join(cmd))
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return "", None
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def test_echo_scsi_command(self):
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self.linuxscsi.echo_scsi_command("/some/path", "1")
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expected_commands = ['tee -a /some/path']
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self.assertEqual(expected_commands, self.cmds)
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@mock.patch.object(os.path, 'realpath')
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def test_get_name_from_path(self, realpath_mock):
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device_name = "/dev/sdc"
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realpath_mock.return_value = device_name
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disk_path = ("/dev/disk/by-path/ip-10.10.220.253:3260-"
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"iscsi-iqn.2000-05.com.3pardata:21810002ac00383d-lun-0")
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name = self.linuxscsi.get_name_from_path(disk_path)
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self.assertEqual(name, device_name)
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realpath_mock.return_value = "bogus"
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name = self.linuxscsi.get_name_from_path(disk_path)
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self.assertIsNone(name)
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@mock.patch.object(os.path, 'exists', return_value=False)
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def test_remove_scsi_device(self, exists_mock):
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self.linuxscsi.remove_scsi_device("/dev/sdc")
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expected_commands = []
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self.assertEqual(expected_commands, self.cmds)
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exists_mock.return_value = True
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self.linuxscsi.remove_scsi_device("/dev/sdc")
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expected_commands = [
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('blockdev --flushbufs /dev/sdc'),
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('tee -a /sys/block/sdc/device/delete')]
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self.assertEqual(expected_commands, self.cmds)
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def test_wait_for_volume_removal(self):
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fake_path = '/dev/disk/by-path/fake-iscsi-iqn-lun-0'
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exists_mock = mock.Mock()
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exists_mock.return_value = True
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os.path.exists = exists_mock
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self.assertRaises(exception.VolumePathNotRemoved,
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self.linuxscsi.wait_for_volume_removal,
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fake_path)
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exists_mock = mock.Mock()
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exists_mock.return_value = False
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os.path.exists = exists_mock
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self.linuxscsi.wait_for_volume_removal(fake_path)
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expected_commands = []
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self.assertEqual(expected_commands, self.cmds)
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def test_flush_multipath_device(self):
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self.linuxscsi.flush_multipath_device('/dev/dm-9')
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expected_commands = [('multipath -f /dev/dm-9')]
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self.assertEqual(expected_commands, self.cmds)
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def test_flush_multipath_devices(self):
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self.linuxscsi.flush_multipath_devices()
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expected_commands = [('multipath -F')]
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self.assertEqual(expected_commands, self.cmds)
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def test_get_scsi_wwn(self):
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fake_path = '/dev/disk/by-id/somepath'
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fake_wwn = '1234567890'
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def fake_execute(*cmd, **kwargs):
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return fake_wwn, None
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self.linuxscsi._execute = fake_execute
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wwn = self.linuxscsi.get_scsi_wwn(fake_path)
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self.assertEqual(fake_wwn, wwn)
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@mock.patch.object(os.path, 'exists', return_value=True)
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def test_find_multipath_device_path(self, exists_mock):
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fake_wwn = '1234567890'
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found_path = self.linuxscsi.find_multipath_device_path(fake_wwn)
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expected_path = '/dev/disk/by-id/dm-uuid-mpath-%s' % fake_wwn
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self.assertEqual(expected_path, found_path)
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@mock.patch.object(os.path, 'exists')
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def test_find_multipath_device_path_mapper(self, exists_mock):
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# the wait loop tries 3 times before it gives up
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# we want to test failing to find the
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# /dev/disk/by-id/dm-uuid-mpath-<WWN> path
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# but finding the
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# /dev/mapper/<WWN> path
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exists_mock.side_effect = [False, False, False, True]
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fake_wwn = '1234567890'
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found_path = self.linuxscsi.find_multipath_device_path(fake_wwn)
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expected_path = '/dev/mapper/%s' % fake_wwn
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self.assertEqual(expected_path, found_path)
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@mock.patch.object(os.path, 'exists', return_value=False)
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def test_find_multipath_device_path_fail(self, exists_mock):
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fake_wwn = '1234567890'
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found_path = self.linuxscsi.find_multipath_device_path(fake_wwn)
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expected_path = None
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self.assertEqual(expected_path, found_path)
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@mock.patch.object(linuxscsi.LinuxSCSI, 'find_multipath_device')
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@mock.patch.object(os.path, 'exists', return_value=True)
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def test_remove_multipath_device(self, exists_mock, mock_multipath):
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def fake_find_multipath_device(device):
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devices = [{'device': '/dev/sde', 'host': 0,
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'channel': 0, 'id': 0, 'lun': 1},
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{'device': '/dev/sdf', 'host': 2,
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'channel': 0, 'id': 0, 'lun': 1}, ]
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info = {"device": "dm-3",
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"id": "350002ac20398383d",
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"devices": devices}
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return info
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mock_multipath.side_effect = fake_find_multipath_device
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self.linuxscsi.remove_multipath_device('/dev/dm-3')
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expected_commands = [
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('blockdev --flushbufs /dev/sde'),
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('tee -a /sys/block/sde/device/delete'),
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('blockdev --flushbufs /dev/sdf'),
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('tee -a /sys/block/sdf/device/delete'),
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('multipath -f 350002ac20398383d'), ]
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self.assertEqual(expected_commands, self.cmds)
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def test_find_multipath_device_3par_ufn(self):
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def fake_execute(*cmd, **kwargs):
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out = ("mpath6 (350002ac20398383d) dm-3 3PARdata,VV\n"
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"size=2.0G features='0' hwhandler='0' wp=rw\n"
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"`-+- policy='round-robin 0' prio=-1 status=active\n"
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" |- 0:0:0:1 sde 8:64 active undef running\n"
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" `- 2:0:0:1 sdf 8:80 active undef running\n"
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)
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return out, None
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self.linuxscsi._execute = fake_execute
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info = self.linuxscsi.find_multipath_device('/dev/sde')
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self.assertEqual("350002ac20398383d", info["id"])
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self.assertEqual("mpath6", info["name"])
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self.assertEqual("/dev/mapper/mpath6", info["device"])
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self.assertEqual("/dev/sde", info['devices'][0]['device'])
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self.assertEqual("0", info['devices'][0]['host'])
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self.assertEqual("0", info['devices'][0]['id'])
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self.assertEqual("0", info['devices'][0]['channel'])
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self.assertEqual("1", info['devices'][0]['lun'])
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self.assertEqual("/dev/sdf", info['devices'][1]['device'])
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self.assertEqual("2", info['devices'][1]['host'])
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self.assertEqual("0", info['devices'][1]['id'])
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self.assertEqual("0", info['devices'][1]['channel'])
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self.assertEqual("1", info['devices'][1]['lun'])
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def test_find_multipath_device_svc(self):
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def fake_execute(*cmd, **kwargs):
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out = ("36005076da00638089c000000000004d5 dm-2 IBM,2145\n"
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"size=954M features='1 queue_if_no_path' hwhandler='0'"
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" wp=rw\n"
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"|-+- policy='round-robin 0' prio=-1 status=active\n"
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"| |- 6:0:2:0 sde 8:64 active undef running\n"
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"| `- 6:0:4:0 sdg 8:96 active undef running\n"
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"`-+- policy='round-robin 0' prio=-1 status=enabled\n"
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" |- 6:0:3:0 sdf 8:80 active undef running\n"
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" `- 6:0:5:0 sdh 8:112 active undef running\n"
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)
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return out, None
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self.linuxscsi._execute = fake_execute
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info = self.linuxscsi.find_multipath_device('/dev/sde')
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self.assertEqual("36005076da00638089c000000000004d5", info["id"])
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self.assertEqual("36005076da00638089c000000000004d5", info["name"])
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self.assertEqual("/dev/mapper/36005076da00638089c000000000004d5",
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info["device"])
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self.assertEqual("/dev/sde", info['devices'][0]['device'])
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self.assertEqual("6", info['devices'][0]['host'])
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self.assertEqual("0", info['devices'][0]['channel'])
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self.assertEqual("2", info['devices'][0]['id'])
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self.assertEqual("0", info['devices'][0]['lun'])
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self.assertEqual("/dev/sdf", info['devices'][2]['device'])
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self.assertEqual("6", info['devices'][2]['host'])
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self.assertEqual("0", info['devices'][2]['channel'])
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self.assertEqual("3", info['devices'][2]['id'])
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self.assertEqual("0", info['devices'][2]['lun'])
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def test_find_multipath_device_ds8000(self):
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def fake_execute(*cmd, **kwargs):
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out = ("36005076303ffc48e0000000000000101 dm-2 IBM,2107900\n"
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"size=1.0G features='1 queue_if_no_path' hwhandler='0'"
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" wp=rw\n"
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"`-+- policy='round-robin 0' prio=-1 status=active\n"
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" |- 6:0:2:0 sdd 8:64 active undef running\n"
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" `- 6:1:0:3 sdc 8:32 active undef running\n"
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)
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return out, None
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self.linuxscsi._execute = fake_execute
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info = self.linuxscsi.find_multipath_device('/dev/sdd')
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self.assertEqual("36005076303ffc48e0000000000000101", info["id"])
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self.assertEqual("36005076303ffc48e0000000000000101", info["name"])
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self.assertEqual("/dev/mapper/36005076303ffc48e0000000000000101",
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info["device"])
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self.assertEqual("/dev/sdd", info['devices'][0]['device'])
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self.assertEqual("6", info['devices'][0]['host'])
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self.assertEqual("0", info['devices'][0]['channel'])
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self.assertEqual("2", info['devices'][0]['id'])
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self.assertEqual("0", info['devices'][0]['lun'])
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self.assertEqual("/dev/sdc", info['devices'][1]['device'])
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self.assertEqual("6", info['devices'][1]['host'])
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self.assertEqual("1", info['devices'][1]['channel'])
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self.assertEqual("0", info['devices'][1]['id'])
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self.assertEqual("3", info['devices'][1]['lun'])
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def test_find_multipath_device_with_error(self):
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def fake_execute(*cmd, **kwargs):
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out = ("Oct 13 10:24:01 | /lib/udev/scsi_id exitted with 1\n"
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"36005076303ffc48e0000000000000101 dm-2 IBM,2107900\n"
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"size=1.0G features='1 queue_if_no_path' hwhandler='0'"
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" wp=rw\n"
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"`-+- policy='round-robin 0' prio=-1 status=active\n"
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" |- 6:0:2:0 sdd 8:64 active undef running\n"
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" `- 6:1:0:3 sdc 8:32 active undef running\n"
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)
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return out, None
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self.linuxscsi._execute = fake_execute
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info = self.linuxscsi.find_multipath_device('/dev/sdd')
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self.assertEqual("36005076303ffc48e0000000000000101", info["id"])
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self.assertEqual("36005076303ffc48e0000000000000101", info["name"])
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self.assertEqual("/dev/mapper/36005076303ffc48e0000000000000101",
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info["device"])
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self.assertEqual("/dev/sdd", info['devices'][0]['device'])
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self.assertEqual("6", info['devices'][0]['host'])
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self.assertEqual("0", info['devices'][0]['channel'])
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self.assertEqual("2", info['devices'][0]['id'])
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self.assertEqual("0", info['devices'][0]['lun'])
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self.assertEqual("/dev/sdc", info['devices'][1]['device'])
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self.assertEqual("6", info['devices'][1]['host'])
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self.assertEqual("1", info['devices'][1]['channel'])
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self.assertEqual("0", info['devices'][1]['id'])
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self.assertEqual("3", info['devices'][1]['lun'])
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