# Copyright 2015 Red Hat, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from ironic_lib import disk_utils
from oslo_concurrency import processutils
from oslotest import base as test_base
from ironic_python_agent import errors
from ironic_python_agent.extensions import iscsi
from ironic_python_agent import hardware
from ironic_python_agent import utils
[docs]class FakeAgent(object):
[docs] def get_node_uuid(self):
return 'my_node_uuid'
[docs]@mock.patch.object(disk_utils, 'destroy_disk_metadata', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
@mock.patch.object(utils, 'execute', autospec=True)
@mock.patch.object(iscsi.rtslib_fb, 'RTSRoot',
mock.Mock(side_effect=iscsi.rtslib_fb.RTSLibError()))
class TestISCSIExtensionTgt(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestISCSIExtensionTgt, self).setUp()
self.agent_extension = iscsi.ISCSIExtension(FakeAgent())
self.fake_dev = '/dev/fake'
self.fake_iqn = 'iqn-fake'
[docs] def test_start_iscsi_target(self, mock_execute,
mock_dispatch,
mock_destroy):
mock_dispatch.return_value = self.fake_dev
mock_execute.return_value = ('', '')
result = self.agent_extension.start_iscsi_target(iqn=self.fake_iqn)
expected = [mock.call('tgtd'),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'target', '--op', 'show', attempts=10),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'target', '--op', 'new', '--tid', '1',
'--targetname', self.fake_iqn),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'logicalunit', '--op', 'new', '--tid', '1',
'--lun', '1', '--backing-store', self.fake_dev),
mock.call('tgtadm', '--lld', 'iscsi', '--mode', 'target',
'--op', 'bind', '--tid', '1',
'--initiator-address', 'ALL')]
mock_execute.assert_has_calls(expected)
mock_dispatch.assert_called_once_with('get_os_install_device')
self.assertEqual({'iscsi_target_iqn': self.fake_iqn},
result.command_result)
self.assertFalse(mock_destroy.called)
[docs] def test_start_iscsi_target_with_special_port(self, mock_execute,
mock_dispatch,
mock_destroy):
mock_dispatch.return_value = self.fake_dev
mock_execute.return_value = ('', '')
result = self.agent_extension.start_iscsi_target(iqn=self.fake_iqn,
portal_port=3268)
expected = [mock.call('tgtd'),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'target', '--op', 'show', attempts=10),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'portal', '--op', 'new', '--param',
'portal=0.0.0.0:3268'),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'target', '--op', 'new', '--tid', '1',
'--targetname', self.fake_iqn),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'logicalunit', '--op', 'new', '--tid', '1',
'--lun', '1', '--backing-store', self.fake_dev),
mock.call('tgtadm', '--lld', 'iscsi', '--mode', 'target',
'--op', 'bind', '--tid', '1',
'--initiator-address', 'ALL')]
mock_execute.assert_has_calls(expected)
mock_dispatch.assert_called_once_with('get_os_install_device')
self.assertEqual({'iscsi_target_iqn': self.fake_iqn},
result.command_result)
[docs] def test_start_iscsi_target_fail_wait_daemon(self, mock_execute,
mock_dispatch,
mock_destroy):
mock_dispatch.return_value = self.fake_dev
# side effects here:
# - execute tgtd: stdout=='', stderr==''
# - induce tgtadm failure while in _wait_for_scsi_daemon
mock_execute.side_effect = [('', ''),
processutils.ProcessExecutionError('blah')]
self.assertRaises(errors.ISCSIError,
self.agent_extension.start_iscsi_target,
iqn=self.fake_iqn)
expected = [mock.call('tgtd'),
mock.call('tgtadm', '--lld', 'iscsi', '--mode', 'target',
'--op', 'show', attempts=10)]
mock_execute.assert_has_calls(expected)
mock_dispatch.assert_called_once_with('get_os_install_device')
self.assertFalse(mock_destroy.called)
[docs] @mock.patch.object(iscsi, '_wait_for_tgtd', autospec=True)
def test_start_iscsi_target_fail_command(self, mock_wait_iscsi,
mock_execute, mock_dispatch,
mock_destroy):
mock_dispatch.return_value = self.fake_dev
mock_execute.side_effect = [('', ''), ('', ''),
processutils.ProcessExecutionError('blah')]
self.assertRaises(errors.ISCSIError,
self.agent_extension.start_iscsi_target,
iqn=self.fake_iqn)
expected = [mock.call('tgtd'),
mock.call('tgtadm', '--lld', 'iscsi', '--mode',
'target', '--op', 'new', '--tid', '1',
'--targetname', self.fake_iqn)]
mock_execute.assert_has_calls(expected)
mock_dispatch.assert_called_once_with('get_os_install_device')
_ORIG_UTILS = iscsi.rtslib_fb.utils
[docs]@mock.patch.object(disk_utils, 'destroy_disk_metadata', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
# Don't mock the utils module, as it contains exceptions
@mock.patch.object(iscsi, 'rtslib_fb', utils=_ORIG_UTILS, autospec=True)
class TestISCSIExtensionLIO(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestISCSIExtensionLIO, self).setUp()
self.agent_extension = iscsi.ISCSIExtension(FakeAgent())
self.fake_dev = '/dev/fake'
self.fake_iqn = 'iqn-fake'
[docs] @mock.patch('ironic_python_agent.netutils.get_wildcard_address',
autospec=True)
def test_start_iscsi_target(self, mock_get_wildcard_address,
mock_rtslib, mock_dispatch,
mock_destroy):
mock_get_wildcard_address.return_value = '::'
mock_dispatch.return_value = self.fake_dev
result = self.agent_extension.start_iscsi_target(iqn=self.fake_iqn)
self.assertEqual({'iscsi_target_iqn': self.fake_iqn},
result.command_result)
mock_rtslib.BlockStorageObject.assert_called_once_with(
name=self.fake_iqn, dev=self.fake_dev)
mock_rtslib.Target.assert_called_once_with(mock.ANY, self.fake_iqn,
mode='create')
mock_rtslib.TPG.assert_called_once_with(
mock_rtslib.Target.return_value, mode='create')
mock_rtslib.LUN.assert_called_once_with(
mock_rtslib.TPG.return_value,
storage_object=mock_rtslib.BlockStorageObject.return_value,
lun=1)
mock_rtslib.NetworkPortal.assert_called_once_with(
mock_rtslib.TPG.return_value, '[::]', 3260)
self.assertFalse(mock_destroy.called)
[docs] @mock.patch('ironic_python_agent.netutils.get_wildcard_address',
autospec=True)
def test_start_iscsi_target_noipv6(self, mock_get_wildcard_address,
mock_rtslib, mock_dispatch,
mock_destroy):
mock_get_wildcard_address.return_value = '0.0.0.0'
mock_dispatch.return_value = self.fake_dev
result = self.agent_extension.start_iscsi_target(iqn=self.fake_iqn)
self.assertEqual({'iscsi_target_iqn': self.fake_iqn},
result.command_result)
mock_rtslib.BlockStorageObject.assert_called_once_with(
name=self.fake_iqn, dev=self.fake_dev)
mock_rtslib.Target.assert_called_once_with(mock.ANY, self.fake_iqn,
mode='create')
mock_rtslib.TPG.assert_called_once_with(
mock_rtslib.Target.return_value, mode='create')
mock_rtslib.LUN.assert_called_once_with(
mock_rtslib.TPG.return_value,
storage_object=mock_rtslib.BlockStorageObject.return_value,
lun=1)
mock_rtslib.NetworkPortal.assert_called_once_with(
mock_rtslib.TPG.return_value, '0.0.0.0', 3260)
self.assertFalse(mock_destroy.called)
[docs] @mock.patch('ironic_python_agent.netutils.get_wildcard_address',
autospec=True)
def test_start_iscsi_target_with_special_port(self,
mock_get_wildcard_address,
mock_rtslib, mock_dispatch,
mock_destroy):
mock_get_wildcard_address.return_value = '::'
mock_dispatch.return_value = self.fake_dev
result = self.agent_extension.start_iscsi_target(iqn=self.fake_iqn,
portal_port=3266)
self.assertEqual({'iscsi_target_iqn': self.fake_iqn},
result.command_result)
mock_rtslib.BlockStorageObject.assert_called_once_with(
name=self.fake_iqn, dev=self.fake_dev)
mock_rtslib.Target.assert_called_once_with(mock.ANY, self.fake_iqn,
mode='create')
mock_rtslib.TPG.assert_called_once_with(
mock_rtslib.Target.return_value, mode='create')
mock_rtslib.LUN.assert_called_once_with(
mock_rtslib.TPG.return_value,
storage_object=mock_rtslib.BlockStorageObject.return_value,
lun=1)
mock_rtslib.NetworkPortal.assert_called_once_with(
mock_rtslib.TPG.return_value, '[::]', 3266)
[docs] def test_failed_to_start_iscsi(self, mock_rtslib, mock_dispatch,
mock_destroy):
mock_dispatch.return_value = self.fake_dev
mock_rtslib.Target.side_effect = _ORIG_UTILS.RTSLibError()
self.assertRaisesRegex(
errors.ISCSIError, 'Failed to create a target',
self.agent_extension.start_iscsi_target, iqn=self.fake_iqn)
[docs] @mock.patch('ironic_python_agent.netutils.get_wildcard_address',
autospec=True)
def test_failed_to_bind_iscsi(self, mock_get_wildcard_address,
mock_rtslib, mock_dispatch, mock_destroy):
mock_get_wildcard_address.return_value = '::'
mock_dispatch.return_value = self.fake_dev
mock_rtslib.NetworkPortal.side_effect = _ORIG_UTILS.RTSLibError()
self.assertRaisesRegex(
errors.ISCSIError, 'Failed to publish a target',
self.agent_extension.start_iscsi_target, iqn=self.fake_iqn,
portal_port=None)
mock_rtslib.BlockStorageObject.assert_called_once_with(
name=self.fake_iqn, dev=self.fake_dev)
mock_rtslib.Target.assert_called_once_with(mock.ANY, self.fake_iqn,
mode='create')
mock_rtslib.TPG.assert_called_once_with(
mock_rtslib.Target.return_value, mode='create')
mock_rtslib.LUN.assert_called_once_with(
mock_rtslib.TPG.return_value,
storage_object=mock_rtslib.BlockStorageObject.return_value,
lun=1)
mock_rtslib.NetworkPortal.assert_called_once_with(
mock_rtslib.TPG.return_value, '[::]', 3260)
self.assertFalse(mock_destroy.called)
[docs]@mock.patch.object(iscsi.rtslib_fb, 'RTSRoot', autospec=True)
class TestISCSIExtensionCleanUp(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestISCSIExtensionCleanUp, self).setUp()
self.agent_extension = iscsi.ISCSIExtension()
self.fake_dev = '/dev/fake'
self.fake_iqn = 'iqn-fake'
[docs] def test_lio_not_available(self, mock_rtslib):
mock_rtslib.side_effect = IOError()
iscsi.clean_up(self.fake_dev)
[docs] def test_device_not_found(self, mock_rtslib):
mock_rtslib.return_value.storage_objects = []
iscsi.clean_up(self.fake_dev)
[docs] def test_ok(self, mock_rtslib):
mock_rtslib.return_value.storage_objects = [
mock.Mock(udev_path='wrong path'),
mock.Mock(udev_path=self.fake_dev),
mock.Mock(udev_path='wrong path'),
]
# mocks don't play well with name attribute
for i, fake_storage in enumerate(
mock_rtslib.return_value.storage_objects):
fake_storage.name = 'iqn%d' % i
mock_rtslib.return_value.targets = [
mock.Mock(wwn='iqn0'),
mock.Mock(wwn='iqn1'),
]
iscsi.clean_up(self.fake_dev)
for fake_storage in mock_rtslib.return_value.storage_objects:
self.assertEqual(fake_storage.udev_path == self.fake_dev,
fake_storage.delete.called)
for fake_target in mock_rtslib.return_value.targets:
self.assertEqual(fake_target.wwn == 'iqn1',
fake_target.delete.called)
[docs] def test_delete_fails(self, mock_rtslib):
mock_rtslib.return_value.storage_objects = [
mock.Mock(udev_path='wrong path'),
mock.Mock(udev_path=self.fake_dev),
mock.Mock(udev_path='wrong path'),
]
# mocks don't play well with name attribute
for i, fake_storage in enumerate(
mock_rtslib.return_value.storage_objects):
fake_storage.name = 'iqn%d' % i
mock_rtslib.return_value.targets = [
mock.Mock(wwn='iqn0'),
mock.Mock(wwn='iqn1'),
]
mock_rtslib.return_value.targets[1].delete.side_effect = (
_ORIG_UTILS.RTSLibError())
self.assertRaises(errors.ISCSIError, iscsi.clean_up, self.fake_dev)