OpenStack Block Storage (Cinder)
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# Copyright 2012 OpenStack Foundation
# 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.
from unittest import mock
import ddt
from oslo_concurrency import processutils
from cinder.brick.local_dev import lvm as brick
from cinder import exception
from cinder.tests.unit import test
from cinder.volume import configuration as conf
@ddt.ddt
class BrickLvmTestCase(test.TestCase):
def setUp(self):
if not hasattr(self, 'configuration'):
self.configuration = mock.Mock(conf.Configuration)
self.configuration.lvm_suppress_fd_warnings = False
self.configuration.volume_group_name = 'fake-vg'
super(BrickLvmTestCase, self).setUp()
self.mock_object(processutils, 'execute', self.fake_execute)
self.vg = brick.LVM(
self.configuration.volume_group_name,
'sudo',
False, None,
'default',
self.fake_execute,
suppress_fd_warn=self.configuration.lvm_suppress_fd_warnings)
def failed_fake_execute(obj, *cmd, **kwargs):
return ("\n", "fake-error")
def fake_pretend_lvm_version(obj, *cmd, **kwargs):
return (" LVM version: 2.03.00 (2012-03-06)\n", "")
def fake_old_lvm_version(obj, *cmd, **kwargs):
# Does not support thin prov or snap activation
return (" LVM version: 2.02.65(2) (2012-03-06)\n", "")
def fake_customised_lvm_version(obj, *cmd, **kwargs):
return (" LVM version: 2.02.100(2)-RHEL6 (2013-09-12)\n", "")
def fake_execute(obj, *cmd, **kwargs): # noqa
if obj.configuration.lvm_suppress_fd_warnings:
_lvm_prefix = 'env, LC_ALL=C, LVM_SUPPRESS_FD_WARNINGS=1, '
else:
_lvm_prefix = 'env, LC_ALL=C, '
cmd_string = ', '.join(cmd)
data = "\n"
if (_lvm_prefix + 'vgs, --noheadings, --unit=g, -o, name' ==
cmd_string):
data = " fake-vg\n"
data += " some-other-vg\n"
elif (_lvm_prefix + 'vgs, --noheadings, -o, name, fake-vg' ==
cmd_string):
data = " fake-vg\n"
elif _lvm_prefix + 'vgs, --version' in cmd_string:
data = " LVM version: 2.02.103(2) (2012-03-06)\n"
elif(_lvm_prefix + 'vgs, --noheadings, -o, uuid, fake-vg' in
cmd_string):
data = " kVxztV-dKpG-Rz7E-xtKY-jeju-QsYU-SLG6Z1\n"
elif(_lvm_prefix + 'vgs, --noheadings, --unit=g, '
'-o, name,size,free,lv_count,uuid, '
'--separator, :, --nosuffix' in cmd_string):
data = (" test-prov-cap-vg-unit:10.00:10.00:0:"
"mXzbuX-dKpG-Rz7E-xtKY-jeju-QsYU-SLG8Z4\n")
if 'test-prov-cap-vg-unit' in cmd_string:
return (data, "")
data = (" test-prov-cap-vg-no-unit:10.00:10.00:0:"
"mXzbuX-dKpG-Rz7E-xtKY-jeju-QsYU-SLG8Z4\n")
if 'test-prov-cap-vg-no-unit' in cmd_string:
return (data, "")
data = " fake-vg:10.00:10.00:0:"\
"kVxztV-dKpG-Rz7E-xtKY-jeju-QsYU-SLG6Z1\n"
if 'fake-vg' in cmd_string:
return (data, "")
data += " fake-vg-2:10.00:10.00:0:"\
"lWyauW-dKpG-Rz7E-xtKY-jeju-QsYU-SLG7Z2\n"
data += " fake-vg-3:10.00:10.00:0:"\
"mXzbuX-dKpG-Rz7E-xtKY-jeju-QsYU-SLG8Z3\n"
elif (_lvm_prefix + 'lvs, --noheadings, '
'--unit=g, -o, vg_name,name,size, --nosuffix, --readonly, '
'fake-vg/lv-nothere' in cmd_string):
raise processutils.ProcessExecutionError(
stderr="One or more specified logical volume(s) not found.")
elif (_lvm_prefix + 'lvs, --noheadings, '
'--unit=g, -o, vg_name,name,size, --nosuffix, --readonly, '
'fake-vg/lv-newerror' in cmd_string):
raise processutils.ProcessExecutionError(
stderr="Failed to find logical volume \"fake-vg/lv-newerror\"")
elif (_lvm_prefix + 'lvs, --noheadings, '
'--unit=g, -o, vg_name,name,size' in cmd_string):
if 'fake-unknown' in cmd_string:
raise processutils.ProcessExecutionError(
stderr="One or more volume(s) not found."
)
if 'test-prov-cap-vg-unit' in cmd_string:
data = " fake-vg test-prov-cap-pool-unit 9.50g\n"
data += " fake-vg fake-volume-1 1.00g\n"
data += " fake-vg fake-volume-2 2.00g\n"
elif 'test-prov-cap-vg-no-unit' in cmd_string:
data = " fake-vg test-prov-cap-pool-no-unit 9.50\n"
data += " fake-vg fake-volume-1 1.00\n"
data += " fake-vg fake-volume-2 2.00\n"
elif 'test-found-lv-name' in cmd_string:
data = " fake-vg test-found-lv-name 9.50\n"
else:
data = " fake-vg fake-1 1.00g\n"
data += " fake-vg fake-2 1.00g\n"
elif (_lvm_prefix + 'lvdisplay, --noheading, -C, -o, Attr' in
cmd_string):
if 'test-volumes' in cmd_string:
data = ' wi-a-'
elif 'snapshot' in cmd_string:
data = ' swi-a-s--'
elif 'open' in cmd_string:
data = ' -wi-ao---'
else:
data = ' owi-a-'
elif (_lvm_prefix + 'lvdisplay, --noheading, -C, -o, Origin' in
cmd_string):
if 'snapshot' in cmd_string:
data = ' fake-volume-1'
else:
data = ' '
elif _lvm_prefix + 'pvs, --noheadings' in cmd_string:
data = " fake-vg|/dev/sda|10.00|1.00\n"
data += " fake-vg|/dev/sdb|10.00|1.00\n"
data += " fake-vg|/dev/sdc|10.00|8.99\n"
data += " fake-vg-2|/dev/sdd|10.00|9.99\n"
if '--ignoreskippedcluster' not in cmd_string:
raise processutils.ProcessExecutionError(
stderr="Skipping clustered volume group",
stdout=data,
exit_code=5
)
elif _lvm_prefix + 'lvs, --noheadings, --unit=g' \
', -o, size,data_percent, --separator, :' in cmd_string:
if 'test-prov-cap-pool' in cmd_string:
data = " 9.5:20\n"
else:
data = " 9:12\n"
elif 'lvcreate, -T, -L, ' in cmd_string:
pass
elif 'lvcreate, -T, -V, ' in cmd_string:
pass
elif 'lvcreate, -n, ' in cmd_string:
pass
elif 'lvcreate, --name, ' in cmd_string:
pass
elif 'lvextend, -L, ' in cmd_string:
pass
else:
raise AssertionError('unexpected command called: %s' % cmd_string)
return (data, "")
def test_create_lv_snapshot(self):
self.assertIsNone(self.vg.create_lv_snapshot('snapshot-1', 'fake-1'))
with mock.patch.object(self.vg, 'get_volume', return_value=None):
try:
self.vg.create_lv_snapshot('snapshot-1', 'fake-non-existent')
except exception.VolumeDeviceNotFound as e:
self.assertEqual('fake-non-existent', e.kwargs['device'])
else:
self.fail("Exception not raised")
def test_vg_exists(self):
self.assertTrue(self.vg._vg_exists())
def test_get_all_volumes(self):
out = self.vg.get_volumes()
self.assertEqual('fake-1', out[0]['name'])
self.assertEqual('1.00g', out[0]['size'])
self.assertEqual('fake-vg', out[0]['vg'])
def test_get_volume(self):
self.assertEqual('fake-1', self.vg.get_volume('fake-1')['name'])
def test_get_volume_none(self):
self.assertIsNone(self.vg.get_volume('fake-unknown'))
def test_get_lv_info_notfound(self):
# lv-nothere will raise lvm < 2.102.112 exception
self.assertEqual(
[],
self.vg.get_lv_info(
'sudo', vg_name='fake-vg', lv_name='lv-nothere')
)
# lv-newerror will raise lvm > 2.102.112 exception
self.assertEqual(
[],
self.vg.get_lv_info(
'sudo', vg_name='fake-vg', lv_name='lv-newerror')
)
def test_get_lv_info_found(self):
lv_info = [{'size': '9.50', 'name': 'test-found-lv-name',
'vg': 'fake-vg'}]
self.assertEqual(
lv_info,
self.vg.get_lv_info(
'sudo', vg_name='fake-vg',
lv_name='test-found-lv-name')
)
def test_get_lv_info_no_lv_name(self):
lv_info = [{'name': 'fake-1', 'size': '1.00g', 'vg': 'fake-vg'},
{'name': 'fake-2', 'size': '1.00g', 'vg': 'fake-vg'}]
self.assertEqual(
lv_info,
self.vg.get_lv_info(
'sudo', vg_name='fake-vg')
)
@mock.patch('tenacity.nap.sleep', mock.Mock())
@mock.patch.object(brick.putils, 'execute')
def test_get_lv_info_retry(self, exec_mock):
exec_mock.side_effect = (
processutils.ProcessExecutionError('', '', exit_code=139),
('vg name size', ''),
)
self.assertEqual(
[{'name': 'name', 'vg': 'vg', 'size': 'size'}],
self.vg.get_lv_info('sudo', vg_name='vg', lv_name='name')
)
self.assertEqual(2, exec_mock.call_count)
args = ['env', 'LC_ALL=C', 'lvs', '--noheadings', '--unit=g', '-o',
'vg_name,name,size', '--nosuffix', '--readonly', 'vg/name']
if self.configuration.lvm_suppress_fd_warnings:
args.insert(2, 'LVM_SUPPRESS_FD_WARNINGS=1')
lvs_call = mock.call(*args, root_helper='sudo', run_as_root=True)
exec_mock.assert_has_calls([lvs_call, lvs_call])
def test_get_all_physical_volumes(self):
# Filtered VG version
pvs = self.vg.get_all_physical_volumes('sudo', 'fake-vg')
self.assertEqual(3, len(pvs))
# Non-Filtered, all VG's
pvs = self.vg.get_all_physical_volumes('sudo')
self.assertEqual(4, len(pvs))
def test_get_volume_groups(self):
self.assertEqual(3, len(self.vg.get_all_volume_groups('sudo')))
self.assertEqual(1,
len(self.vg.get_all_volume_groups('sudo', 'fake-vg')))
def test_thin_support(self):
# lvm.supports_thin() is a static method and doesn't
# use the self._executor fake we pass in on init
# so we need to stub processutils.execute appropriately
self.assertTrue(self.vg.supports_thin_provisioning('sudo'))
with mock.patch.object(processutils, 'execute',
self.fake_pretend_lvm_version):
self.assertTrue(self.vg.supports_thin_provisioning('sudo'))
with mock.patch.object(processutils, 'execute',
self.fake_old_lvm_version):
self.assertFalse(self.vg.supports_thin_provisioning('sudo'))
with mock.patch.object(processutils, 'execute',
self.fake_customised_lvm_version):
self.assertTrue(self.vg.supports_thin_provisioning('sudo'))
def test_snapshot_lv_activate_support(self):
self.vg._supports_snapshot_lv_activation = None
self.assertTrue(self.vg.supports_snapshot_lv_activation)
self.vg._supports_snapshot_lv_activation = None
with mock.patch.object(processutils, 'execute',
self.fake_old_lvm_version):
self.assertFalse(self.vg.supports_snapshot_lv_activation)
self.vg._supports_snapshot_lv_activation = None
def test_lvchange_ignskipact_support_yes(self):
"""Tests if lvchange -K is available via a lvm2 version check."""
self.vg._supports_lvchange_ignoreskipactivation = None
with mock.patch.object(processutils, 'execute',
self.fake_pretend_lvm_version):
self.assertTrue(self.vg.supports_lvchange_ignoreskipactivation)
self.vg._supports_lvchange_ignoreskipactivation = None
with mock.patch.object(processutils, 'execute',
self.fake_old_lvm_version):
self.assertFalse(self.vg.supports_lvchange_ignoreskipactivation)
self.vg._supports_lvchange_ignoreskipactivation = None
def test_pvs_ignoreskippedcluster_support(self):
"""Tests if lvm support ignoreskippedcluster option."""
brick.LVM._supports_pvs_ignoreskippedcluster = None
with mock.patch.object(processutils, 'execute',
self.fake_pretend_lvm_version):
self.assertTrue(brick.LVM.supports_pvs_ignoreskippedcluster(
'sudo'))
brick.LVM._supports_pvs_ignoreskippedcluster = None
with mock.patch.object(processutils, 'execute',
self.fake_old_lvm_version):
self.assertFalse(brick.LVM.supports_pvs_ignoreskippedcluster(
'sudo'))
brick.LVM._supports_pvs_ignoreskippedcluster = None
def test_thin_pool_creation(self):
# The size of fake-vg volume group is 10g, so the calculated thin
# pool size should be 9.5g (95% of 10g).
self.assertEqual("9.5g", self.vg.create_thin_pool())
# Passing a size parameter should result in a thin pool of that exact
# size.
for size in ("1g", "1.2g", "1.75g"):
self.assertEqual(size, self.vg.create_thin_pool(size_str=size))
def test_thin_pool_provisioned_capacity(self):
self.vg.vg_thin_pool = "test-prov-cap-pool-unit"
self.vg.vg_name = 'test-prov-cap-vg-unit'
self.assertEqual(
"9.5g",
self.vg.create_thin_pool(name=self.vg.vg_thin_pool))
self.assertEqual(9.50, self.vg.vg_thin_pool_size)
self.assertEqual(7.6, self.vg.vg_thin_pool_free_space)
self.assertEqual(3.0, self.vg.vg_provisioned_capacity)
self.vg.vg_thin_pool = "test-prov-cap-pool-no-unit"
self.vg.vg_name = 'test-prov-cap-vg-no-unit'
self.assertEqual(
"9.5g",
self.vg.create_thin_pool(name=self.vg.vg_thin_pool))
self.assertEqual(9.50, self.vg.vg_thin_pool_size)
self.assertEqual(7.6, self.vg.vg_thin_pool_free_space)
self.assertEqual(3.0, self.vg.vg_provisioned_capacity)
def test_thin_pool_free_space(self):
# The size of fake-vg-pool is 9g and the allocated data sums up to
# 12% so the calculated free space should be 7.92
self.assertEqual(float("7.92"),
self.vg._get_thin_pool_free_space("fake-vg",
"fake-vg-pool"))
def test_volume_create_after_thin_creation(self):
"""Test self.vg.vg_thin_pool is set to pool_name
See bug #1220286 for more info.
"""
vg_name = "vg-name"
pool_name = vg_name + "-pool"
self.vg.create_thin_pool(pool_name, "1G")
with mock.patch.object(self.vg, '_execute'):
self.vg.create_volume("test", "1G", lv_type='thin')
if self.configuration.lvm_suppress_fd_warnings is False:
self.vg._execute.assert_called_once_with(
'env', 'LC_ALL=C', 'lvcreate', '-T', '-V',
'1G', '-n', 'test', 'fake-vg/vg-name-pool',
root_helper='sudo', run_as_root=True)
else:
self.vg._execute.assert_called_once_with(
'env', 'LC_ALL=C', 'LVM_SUPPRESS_FD_WARNINGS=1',
'lvcreate', '-T', '-V', '1G', '-n', 'test',
'fake-vg/vg-name-pool', root_helper='sudo',
run_as_root=True)
self.assertEqual(pool_name, self.vg.vg_thin_pool)
def test_volume_create_when_executor_failed(self):
def fail(*args, **kwargs):
raise processutils.ProcessExecutionError()
self.vg._execute = fail
with mock.patch.object(self.vg, 'get_all_volume_groups') as m_gavg:
self.assertRaises(
processutils.ProcessExecutionError,
self.vg.create_volume, "test", "1G"
)
m_gavg.assert_called()
def test_lv_has_snapshot(self):
self.assertTrue(self.vg.lv_has_snapshot('fake-vg'))
self.assertFalse(self.vg.lv_has_snapshot('test-volumes'))
def test_lv_is_snapshot(self):
self.assertTrue(self.vg.lv_is_snapshot('fake-snapshot'))
self.assertFalse(self.vg.lv_is_snapshot('test-volumes'))
def test_lv_is_open(self):
self.assertTrue(self.vg.lv_is_open('fake-open'))
self.assertFalse(self.vg.lv_is_open('fake-snapshot'))
def test_lv_get_origin(self):
self.assertEqual('fake-volume-1',
self.vg.lv_get_origin('fake-snapshot'))
self.assertIsNone(self.vg.lv_get_origin('test-volumes'))
def test_activate_lv(self):
with mock.patch.object(self.vg, '_execute'):
self.vg._supports_lvchange_ignoreskipactivation = True
self.vg._execute('lvchange', '-a', 'y', '--yes', '-K',
'fake-vg/my-lv',
root_helper='sudo', run_as_root=True)
self.vg.activate_lv('my-lv')
def test_get_mirrored_available_capacity(self):
self.assertEqual(2.0, self.vg.vg_mirror_free_space(1))
@ddt.data(True, False)
def test_lv_extend(self, has_snapshot):
with mock.patch.object(self.vg, '_execute'):
with mock.patch.object(self.vg, 'lv_has_snapshot'):
self.vg.deactivate_lv = mock.MagicMock()
self.vg.activate_lv = mock.MagicMock()
self.vg.lv_has_snapshot.return_value = has_snapshot
self.vg.extend_volume("test", "2G")
self.vg.lv_has_snapshot.assert_called_once_with("test")
if has_snapshot:
self.vg.activate_lv.assert_called_once_with("test")
self.vg.deactivate_lv.assert_called_once_with("test")
else:
self.vg.activate_lv.assert_not_called()
self.vg.deactivate_lv.assert_not_called()
def test_lv_deactivate(self):
with mock.patch.object(self.vg, '_execute'):
is_active_mock = mock.Mock()
is_active_mock.return_value = False
self.vg._lv_is_active = is_active_mock
self.vg.create_volume('test', '1G')
self.vg.deactivate_lv('test')
@mock.patch('time.sleep')
def test_lv_deactivate_timeout(self, _mock_sleep):
with mock.patch.object(self.vg, '_execute'):
is_active_mock = mock.Mock()
is_active_mock.return_value = True
self.vg._lv_is_active = is_active_mock
self.vg.create_volume('test', '1G')
self.assertRaises(exception.VolumeNotDeactivated,
self.vg.deactivate_lv, 'test')
class BrickLvmTestCaseIgnoreFDWarnings(BrickLvmTestCase):
def setUp(self):
self.configuration = mock.Mock(conf.Configuration)
self.configuration.lvm_suppress_fd_warnings = True
super(BrickLvmTestCaseIgnoreFDWarnings, self).setUp()