260 lines
9.5 KiB
Python
260 lines
9.5 KiB
Python
# Copyright 2016 Canonical Ltd
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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 context
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from nova import test
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from nova.tests.unit import fake_instance
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from nova.virt.lxd import storage
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class TestAttachEphemeral(test.NoDBTestCase):
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"""Tests for nova.virt.lxd.storage.attach_ephemeral."""
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def setUp(self):
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super(TestAttachEphemeral, self).setUp()
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self.patchers = []
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CONF_patcher = mock.patch('nova.virt.lxd.common.conf.CONF')
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self.patchers.append(CONF_patcher)
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self.CONF = CONF_patcher.start()
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self.CONF.instances_path = '/i'
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self.CONF.lxd.root_dir = '/var/lib/lxd'
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def tearDown(self):
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super(TestAttachEphemeral, self).tearDown()
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for patcher in self.patchers:
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patcher.stop()
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@mock.patch.object(storage.utils, 'execute')
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@mock.patch(
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'nova.virt.lxd.storage.driver.block_device_info_get_ephemerals')
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def test_add_ephemerals_with_zfs(
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self, block_device_info_get_ephemerals, execute):
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ctx = context.get_admin_context()
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block_device_info_get_ephemerals.return_value = [
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{'virtual_name': 'ephemerals0'}]
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instance = fake_instance.fake_instance_obj(
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ctx, name='test', memory_mb=0)
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block_device_info = mock.Mock()
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lxd_config = {'environment': {'storage': 'zfs'},
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'config': {'storage.zfs_pool_name': 'zfs'}}
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container = mock.Mock()
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container.config = {
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'volatile.last_state.idmap': '[{"Isuid":true,"Isgid":false,'
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'"Hostid":165536,"Nsid":0,'
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'"Maprange":65536}]'
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}
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client = mock.Mock()
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client.containers.get.return_value = container
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storage.attach_ephemeral(
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client, block_device_info, lxd_config, instance)
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block_device_info_get_ephemerals.assert_called_once_with(
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block_device_info)
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expected_calls = [
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mock.call(
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'zfs', 'create', '-o',
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'mountpoint=/i/instance-00000001/storage/ephemerals0', '-o',
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'quota=0G', 'zfs/instance-00000001-ephemeral',
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run_as_root=True),
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mock.call(
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'chown', '165536', '/i/instance-00000001/storage/ephemerals0',
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run_as_root=True)
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]
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self.assertEqual(expected_calls, execute.call_args_list)
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@mock.patch.object(storage.utils, 'execute')
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@mock.patch(
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'nova.virt.lxd.storage.driver.block_device_info_get_ephemerals')
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def test_add_ephemerals_with_btrfs(
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self, block_device_info_get_ephemerals, execute):
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ctx = context.get_admin_context()
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block_device_info_get_ephemerals.return_value = [
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{'virtual_name': 'ephemerals0'}]
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instance = fake_instance.fake_instance_obj(
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ctx, name='test', memory_mb=0)
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instance.ephemeral_gb = 1
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block_device_info = mock.Mock()
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lxd_config = {'environment': {'storage': 'btrfs'}}
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profile = mock.Mock()
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profile.devices = {
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'root': {
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'path': '/',
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'type': 'disk',
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'size': '1G'
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},
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'ephemerals0': {
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'optional': 'True',
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'path': '/mnt',
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'source': '/path/fake_path',
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'type': 'disk'
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}
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}
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client = mock.Mock()
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client.profiles.get.return_value = profile
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container = mock.Mock()
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container.config = {
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'volatile.last_state.idmap': '[{"Isuid":true,"Isgid":false,'
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'"Hostid":165536,"Nsid":0,'
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'"Maprange":65536}]'
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}
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client.containers.get.return_value = container
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storage.attach_ephemeral(
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client, block_device_info, lxd_config, instance)
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block_device_info_get_ephemerals.assert_called_once_with(
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block_device_info)
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profile.save.assert_called_once_with()
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expected_calls = [
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mock.call(
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'btrfs', 'subvolume', 'create',
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'/var/lib/lxd/containers/instance-00000001/ephemerals0',
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run_as_root=True),
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mock.call(
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'btrfs', 'qgroup', 'limit', '1g',
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'/var/lib/lxd/containers/instance-00000001/ephemerals0',
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run_as_root=True),
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mock.call(
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'chown', '165536',
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'/var/lib/lxd/containers/instance-00000001/ephemerals0',
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run_as_root=True)
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]
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self.assertEqual(expected_calls, execute.call_args_list)
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self.assertEqual(
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profile.devices['ephemerals0']['source'],
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'/var/lib/lxd/containers/instance-00000001/ephemerals0')
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@mock.patch.object(storage.utils, 'execute')
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@mock.patch(
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'nova.virt.lxd.storage.driver.block_device_info_get_ephemerals')
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def test_ephemeral_with_lvm(
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self, block_device_info_get_ephemerals, execute):
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ctx = context.get_admin_context()
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block_device_info_get_ephemerals.return_value = [
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{'virtual_name': 'ephemerals0'}]
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instance = fake_instance.fake_instance_obj(
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ctx, name='test', memory_mb=0)
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block_device_info = mock.Mock()
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lxd_config = {'environment': {'storage': 'lvm'},
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'config': {'storage.lvm_vg_name': 'lxd'}}
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storage.fileutils = mock.Mock()
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container = mock.Mock()
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container.config = {
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'volatile.last_state.idmap': '[{"Isuid":true,"Isgid":false,'
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'"Hostid":165536,"Nsid":0,'
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'"Maprange":65536}]'
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}
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client = mock.Mock()
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client.containers.get.return_value = container
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storage.attach_ephemeral(
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client, block_device_info, lxd_config, instance)
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block_device_info_get_ephemerals.assert_called_once_with(
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block_device_info)
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expected_calls = [
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mock.call(
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'lvcreate', '-L', '0G', '-n', 'instance-00000001-ephemerals0',
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'lxd', attempts=3, run_as_root=True),
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mock.call(
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'mkfs', '-t', 'ext4', '/dev/lxd/instance-00000001-ephemerals0',
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run_as_root=True),
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mock.call(
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'mount', '-t', 'ext4',
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'/dev/lxd/instance-00000001-ephemerals0',
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'/i/instance-00000001/storage/ephemerals0',
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run_as_root=True),
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mock.call(
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'chown', '165536', '/i/instance-00000001/storage/ephemerals0',
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run_as_root=True)]
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self.assertEqual(expected_calls, execute.call_args_list)
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class TestDetachEphemeral(test.NoDBTestCase):
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"""Tests for nova.virt.lxd.storage.detach_ephemeral."""
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@mock.patch.object(storage.utils, 'execute')
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@mock.patch(
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'nova.virt.lxd.storage.driver.block_device_info_get_ephemerals')
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def test_remove_ephemeral_with_zfs(
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self, block_device_info_get_ephemerals, execute):
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block_device_info_get_ephemerals.return_value = [
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{'virtual_name': 'ephemerals0'}]
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ctx = context.get_admin_context()
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instance = fake_instance.fake_instance_obj(
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ctx, name='test', memory_mb=0)
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block_device_info = mock.Mock()
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lxd_config = {'environment': {'storage': 'zfs'},
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'config': {'storage.zfs_pool_name': 'zfs'}}
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client = mock.Mock()
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storage.detach_ephemeral(
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client, block_device_info, lxd_config, instance)
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block_device_info_get_ephemerals.assert_called_once_with(
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block_device_info)
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expected_calls = [
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mock.call('zfs', 'destroy', 'zfs/instance-00000001-ephemeral',
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run_as_root=True)
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]
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self.assertEqual(expected_calls, execute.call_args_list)
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@mock.patch.object(storage.utils, 'execute')
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@mock.patch(
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'nova.virt.lxd.storage.driver.block_device_info_get_ephemerals')
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def test_remove_ephemeral_with_lvm(
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self, block_device_info_get_ephemerals, execute):
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block_device_info_get_ephemerals.return_value = [
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{'virtual_name': 'ephemerals0'}]
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ctx = context.get_admin_context()
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instance = fake_instance.fake_instance_obj(
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ctx, name='test', memory_mb=0)
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block_device_info = mock.Mock()
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lxd_config = {'environment': {'storage': 'lvm'},
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'config': {'storage.lvm_vg_name': 'lxd'}}
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client = mock.Mock()
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storage.detach_ephemeral(
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client, block_device_info, lxd_config, instance)
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block_device_info_get_ephemerals.assert_called_once_with(
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block_device_info)
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expected_calls = [
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mock.call(
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'umount', '/dev/lxd/instance-00000001-ephemerals0',
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run_as_root=True),
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mock.call('lvremove', '-f',
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'/dev/lxd/instance-00000001-ephemerals0',
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run_as_root=True)
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]
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self.assertEqual(expected_calls, execute.call_args_list)
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