# # The Qubes OS Project, http://www.qubes-os.org # # Copyright (C) 2016 Bahtiar `kalkin-` Gadimov # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, see . # ''' Tests for lvm storage driver. By default tests are going to use the 'qubes_dom0/pool00'. An alternative LVM thin pool may be provided via :envvar:`DEFAULT_LVM_POOL` shell variable. Any pool variables prefixed with 'LVM_' or 'lvm_' represent a LVM 'volume_group/thin_pool' combination. Pool variables without a prefix represent a :py:class:`qubes.storage.lvm.ThinPool`. ''' import os import subprocess import tempfile import unittest import unittest.mock import asyncio import qubes.tests import qubes.tests.storage import qubes.storage from qubes.storage.lvm import ThinPool, ThinVolume, qubes_lvm if 'DEFAULT_LVM_POOL' in os.environ.keys(): DEFAULT_LVM_POOL = os.environ['DEFAULT_LVM_POOL'] else: DEFAULT_LVM_POOL = 'qubes_dom0/vm-pool' def lvm_pool_exists(volume_group, thin_pool): ''' Returns ``True`` if thin pool exists in the volume group. ''' path = "/dev/mapper/{!s}-{!s}".format( volume_group.replace('-', '--'), thin_pool.replace('-', '--')) return os.path.exists(path) def skipUnlessLvmPoolExists(test_item): # pylint: disable=invalid-name ''' Decorator that skips LVM tests if the default pool is missing. ''' volume_group, thin_pool = DEFAULT_LVM_POOL.split('/', 1) result = lvm_pool_exists(volume_group, thin_pool) msg = 'LVM thin pool {!r} does not exist'.format(DEFAULT_LVM_POOL) return unittest.skipUnless(result, msg)(test_item) POOL_CLASS = ThinPool VOLUME_CLASS = ThinVolume POOL_CONF = {'name': 'test-lvm', 'driver': 'lvm_thin', 'volume_group': DEFAULT_LVM_POOL.split('/')[0], 'thin_pool': DEFAULT_LVM_POOL.split('/')[1]} class ThinPoolBase(qubes.tests.QubesTestCase): ''' Sanity tests for :py:class:`qubes.storage.lvm.ThinPool` ''' created_pool = False def setUp(self, init_pool=True): super(ThinPoolBase, self).setUp() if init_pool: self.init_pool() def cleanup_test_volumes(self): p = self.loop.run_until_complete(asyncio.create_subprocess_exec( 'sudo', 'lvs', '--noheadings', '-o', 'lv_name', self.pool.volume_group, stdout=subprocess.PIPE )) volumes, _ = self.loop.run_until_complete(p.communicate()) for volume in volumes.decode().splitlines(): volume = volume.strip() if not volume.startswith('vm-' + qubes.tests.VMPREFIX): continue p = self.loop.run_until_complete(asyncio.create_subprocess_exec( 'sudo', 'lvremove', '-f', '/'.join([self.pool.volume_group, volume]) )) self.loop.run_until_complete(p.wait()) def tearDown(self): ''' Remove the default lvm pool if it was created only for this test ''' if hasattr(self, 'pool'): self.cleanup_test_volumes() if self.created_pool: self.loop.run_until_complete(self.app.remove_pool(self.pool.name)) super(ThinPoolBase, self).tearDown() def init_pool(self): volume_group, thin_pool = DEFAULT_LVM_POOL.split('/', 1) self.pool = self._find_pool(volume_group, thin_pool) if not self.pool: self.pool = self.loop.run_until_complete( self.app.add_pool(**POOL_CONF)) self.created_pool = True def _find_pool(self, volume_group, thin_pool): ''' Returns the pool matching the specified ``volume_group`` & ``thin_pool``, or None. ''' pools = [p for p in self.app.pools.values() if issubclass(p.__class__, POOL_CLASS)] for pool in pools: if pool.volume_group == volume_group \ and pool.thin_pool == thin_pool: return pool return None @skipUnlessLvmPoolExists class TC_00_ThinPool(ThinPoolBase): ''' Sanity tests for :py:class:`qubes.storage.lvm.ThinPool` ''' def setUp(self, **kwargs): xml_path = '/tmp/qubes-test.xml' self.app = qubes.Qubes.create_empty_store(store=xml_path, clockvm=None, updatevm=None, offline_mode=True, ) os.environ['QUBES_XML_PATH'] = xml_path super().setUp(**kwargs) def tearDown(self): super(TC_00_ThinPool, self).tearDown() os.unlink(self.app.store) self.app.close() del self.app for attr in dir(self): if isinstance(getattr(self, attr), qubes.vm.BaseVM): delattr(self, attr) def test_000_default_thin_pool(self): ''' Check whether :py:data`DEFAULT_LVM_POOL` exists. This pool is created by default, if at installation time LVM + Thin was chosen. ''' msg = 'Thin pool {!r} does not exist'.format(DEFAULT_LVM_POOL) self.assertTrue(self.pool, msg) def test_001_origin_volume(self): ''' Test origin volume creation ''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.assertIsInstance(volume, VOLUME_CLASS) self.assertEqual(volume.name, 'root') self.assertEqual(volume.pool, self.pool.name) self.assertEqual(volume.size, qubes.config.defaults['root_img_size']) self.loop.run_until_complete(volume.create()) path = "/dev/%s" % volume.vid self.assertTrue(os.path.exists(path), path) self.loop.run_until_complete(volume.remove()) def test_003_read_write_volume(self): ''' Test read-write volume creation ''' config = { 'name': 'root', 'pool': self.pool.name, 'rw': True, 'save_on_stop': True, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.assertIsInstance(volume, VOLUME_CLASS) self.assertEqual(volume.name, 'root') self.assertEqual(volume.pool, self.pool.name) self.assertEqual(volume.size, qubes.config.defaults['root_img_size']) self.loop.run_until_complete(volume.create()) path = "/dev/%s" % volume.vid self.assertTrue(os.path.exists(path), path) self.loop.run_until_complete(volume.remove()) def test_004_size(self): with self.assertNotRaises(NotImplementedError): size = self.pool.size environ = os.environ.copy() environ['LC_ALL'] = 'C.utf8' pool_size = subprocess.check_output(['sudo', 'lvs', '--noheadings', '-o', 'lv_size', '--units', 'b', self.pool.volume_group + '/' + self.pool.thin_pool], env=environ) self.assertEqual(size, int(pool_size.strip()[:-1])) def test_005_usage(self): with self.assertNotRaises(NotImplementedError): usage = self.pool.usage environ = os.environ.copy() environ['LC_ALL'] = 'C.utf8' pool_info = subprocess.check_output(['sudo', 'lvs', '--noheadings', '-o', 'lv_size,data_percent', '--units', 'b', self.pool.volume_group + '/' + self.pool.thin_pool], env=environ) pool_size, pool_usage = pool_info.strip().split() pool_size = int(pool_size[:-1]) pool_usage = float(pool_usage) self.assertEqual(usage, int(pool_size * pool_usage / 100)) def _get_size(self, path): if os.getuid() != 0: return int( subprocess.check_output( ['sudo', 'blockdev', '--getsize64', path])) fd = os.open(path, os.O_RDONLY) try: return os.lseek(fd, 0, os.SEEK_END) finally: os.close(fd) def test_006_resize(self): config = { 'name': 'root', 'pool': self.pool.name, 'rw': True, 'save_on_stop': True, 'size': 32 * 1024**2, } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume.create()) self.addCleanup(self.loop.run_until_complete, volume.remove()) path = "/dev/%s" % volume.vid new_size = 64 * 1024 ** 2 self.loop.run_until_complete(volume.resize(new_size)) self.assertEqual(self._get_size(path), new_size) self.assertEqual(volume.size, new_size) def test_007_resize_running(self): old_size = 32 * 1024**2 config = { 'name': 'root', 'pool': self.pool.name, 'rw': True, 'save_on_stop': True, 'size': old_size, } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume.create()) self.addCleanup(self.loop.run_until_complete, volume.remove()) self.loop.run_until_complete(volume.start()) path = "/dev/%s" % volume.vid path2 = "/dev/%s" % volume._vid_snap new_size = 64 * 1024 ** 2 self.loop.run_until_complete(volume.resize(new_size)) self.assertEqual(self._get_size(path), old_size) self.assertEqual(self._get_size(path2), new_size) self.assertEqual(volume.size, new_size) self.loop.run_until_complete(volume.stop()) self.assertEqual(self._get_size(path), new_size) self.assertEqual(volume.size, new_size) def _get_lv_uuid(self, lv): sudo = [] if os.getuid() == 0 else ['sudo'] lvs_output = subprocess.check_output( sudo + ['lvs', '--noheadings', '-o', 'lv_uuid', lv]) return lvs_output.strip() def _get_lv_origin_uuid(self, lv): sudo = [] if os.getuid() == 0 else ['sudo'] if qubes.storage.lvm.lvm_is_very_old: # no support for origin_uuid directly lvs_output = subprocess.check_output( sudo + ['lvs', '--noheadings', '-o', 'origin', lv]) lvs_output = subprocess.check_output( sudo + ['lvs', '--noheadings', '-o', 'lv_uuid', lv.rsplit('/', 1)[0] + '/' + lvs_output.strip().decode()]) else: lvs_output = subprocess.check_output( sudo + ['lvs', '--noheadings', '-o', 'origin_uuid', lv]) return lvs_output.strip() def test_008_commit(self): ''' Test volume changes commit''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume.create()) path_snap = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path_snap), path_snap) origin_uuid = self._get_lv_uuid(volume.path) self.loop.run_until_complete(volume.start()) snap_uuid = self._get_lv_uuid(path_snap) self.assertNotEqual(origin_uuid, snap_uuid) path = volume.path self.assertTrue(path.startswith('/dev/' + volume.vid), '{} does not start with /dev/{}'.format(path, volume.vid)) self.assertTrue(os.path.exists(path), path) self.loop.run_until_complete(volume.remove()) def test_009_interrupted_commit(self): ''' Test volume changes commit''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() # do not call volume.create(), do it manually to simulate # interrupted commit revisions = ['-1521065904-back', '-1521065905-back', '-snap'] orig_uuids = {} for rev in revisions: cmd = ['create', self.pool._pool_id, volume.vid.split('/')[1] + rev, str(config['size'])] qubes_lvm(cmd) orig_uuids[rev] = self._get_lv_uuid(volume.vid + rev) qubes.storage.lvm.reset_cache() path_snap = '/dev/' + volume._vid_snap self.assertTrue(volume.is_dirty()) self.assertEqual(volume.path, '/dev/' + volume.vid + revisions[1]) expected_revisions = { revisions[0].lstrip('-'): '2018-03-14T22:18:24', revisions[1].lstrip('-'): '2018-03-14T22:18:25', } self.assertEqual(volume.revisions, expected_revisions) self.loop.run_until_complete(volume.start()) self.assertEqual(volume.revisions, expected_revisions) snap_uuid = self._get_lv_uuid(path_snap) self.assertEqual(orig_uuids['-snap'], snap_uuid) self.assertTrue(volume.is_dirty()) self.assertEqual(volume.path, '/dev/' + volume.vid + revisions[1]) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [521065906] self.loop.run_until_complete(volume.stop()) expected_revisions = { revisions[0].lstrip('-'): '2018-03-14T22:18:24', revisions[1].lstrip('-'): '2018-03-14T22:18:25', } self.assertFalse(volume.is_dirty()) self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) self.assertEqual(snap_uuid, self._get_lv_uuid(volume.path)) self.assertFalse(os.path.exists(path_snap), path_snap) self.loop.run_until_complete(volume.remove()) def test_010_migration1(self): '''Start with old revisions, then start interacting using new code''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() # do not call volume.create(), do it manually to have old LV naming revisions = ['', '-1521065904-back', '-1521065905-back'] orig_uuids = {} for rev in revisions: cmd = ['create', self.pool._pool_id, volume.vid.split('/')[1] + rev, str(config['size'])] qubes_lvm(cmd) orig_uuids[rev] = self._get_lv_uuid(volume.vid + rev) qubes.storage.lvm.reset_cache() path_snap = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path_snap), path_snap) expected_revisions = { revisions[1].lstrip('-'): '2018-03-14T22:18:24', revisions[2].lstrip('-'): '2018-03-14T22:18:25', } self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) self.loop.run_until_complete(volume.start()) snap_uuid = self._get_lv_uuid(path_snap) self.assertNotEqual(orig_uuids[''], snap_uuid) snap_origin_uuid = self._get_lv_origin_uuid(path_snap) self.assertEqual(orig_uuids[''], snap_origin_uuid) path = volume.path self.assertEqual(path, '/dev/' + volume.vid) self.assertTrue(os.path.exists(path), path) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = ('1521065906', '1521065907') self.loop.run_until_complete(volume.stop()) revisions.extend(['-1521065906-back']) expected_revisions = { revisions[2].lstrip('-'): '2018-03-14T22:18:25', revisions[3].lstrip('-'): '2018-03-14T22:18:26', } self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) path_snap = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path_snap), path_snap) self.assertTrue(os.path.exists('/dev/' + volume.vid)) self.assertEqual(self._get_lv_uuid(volume.path), snap_uuid) prev_path = '/dev/' + volume.vid + revisions[3] self.assertEqual(self._get_lv_uuid(prev_path), orig_uuids['']) self.loop.run_until_complete(volume.remove()) for rev in revisions: path = '/dev/' + volume.vid + rev self.assertFalse(os.path.exists(path), path) def test_011_migration2(self): '''VM started with old code, stopped with new''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 1, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() # do not call volume.create(), do it manually to have old LV naming revisions = ['', '-snap'] orig_uuids = {} for rev in revisions: cmd = ['create', self.pool._pool_id, volume.vid.split('/')[1] + rev, str(config['size'])] qubes_lvm(cmd) orig_uuids[rev] = self._get_lv_uuid(volume.vid + rev) qubes.storage.lvm.reset_cache() path_snap = '/dev/' + volume._vid_snap self.assertTrue(os.path.exists(path_snap), path_snap) expected_revisions = {} self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) self.assertTrue(volume.is_dirty()) path = volume.path self.assertEqual(path, '/dev/' + volume.vid) self.assertTrue(os.path.exists(path), path) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = ('1521065906', '1521065907') self.loop.run_until_complete(volume.stop()) revisions.extend(['-1521065906-back']) expected_revisions = { revisions[2].lstrip('-'): '2018-03-14T22:18:26', } self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) path_snap = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path_snap), path_snap) self.assertTrue(os.path.exists('/dev/' + volume.vid)) self.assertEqual(self._get_lv_uuid(volume.path), orig_uuids['-snap']) prev_path = '/dev/' + volume.vid + revisions[2] self.assertEqual(self._get_lv_uuid(prev_path), orig_uuids['']) self.loop.run_until_complete(volume.remove()) for rev in revisions: path = '/dev/' + volume.vid + rev self.assertFalse(os.path.exists(path), path) def test_012_migration3(self): '''VM started with old code, started again with new, stopped with new''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 1, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() # do not call volume.create(), do it manually to have old LV naming revisions = ['', '-snap'] orig_uuids = {} for rev in revisions: cmd = ['create', self.pool._pool_id, volume.vid.split('/')[1] + rev, str(config['size'])] qubes_lvm(cmd) orig_uuids[rev] = self._get_lv_uuid(volume.vid + rev) qubes.storage.lvm.reset_cache() path_snap = '/dev/' + volume._vid_snap self.assertTrue(os.path.exists(path_snap), path_snap) expected_revisions = {} self.assertEqual(volume.revisions, expected_revisions) self.assertTrue(volume.path, '/dev/' + volume.vid) self.assertTrue(volume.is_dirty()) self.loop.run_until_complete(volume.start()) self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) # -snap LV should be unchanged self.assertEqual(self._get_lv_uuid(volume._vid_snap), orig_uuids['-snap']) self.loop.run_until_complete(volume.remove()) for rev in revisions: path = '/dev/' + volume.vid + rev self.assertFalse(os.path.exists(path), path) def test_013_migration4(self): '''revisions_to_keep=0, VM started with old code, stopped with new''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 0, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() # do not call volume.create(), do it manually to have old LV naming revisions = ['', '-snap'] orig_uuids = {} for rev in revisions: cmd = ['create', self.pool._pool_id, volume.vid.split('/')[1] + rev, str(config['size'])] qubes_lvm(cmd) orig_uuids[rev] = self._get_lv_uuid(volume.vid + rev) qubes.storage.lvm.reset_cache() path_snap = '/dev/' + volume._vid_snap self.assertTrue(os.path.exists(path_snap), path_snap) expected_revisions = {} self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) self.assertTrue(volume.is_dirty()) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = ('1521065906', '1521065907') self.loop.run_until_complete(volume.stop()) expected_revisions = {} self.assertEqual(volume.revisions, expected_revisions) self.assertEqual(volume.path, '/dev/' + volume.vid) self.loop.run_until_complete(volume.remove()) for rev in revisions: path = '/dev/' + volume.vid + rev self.assertFalse(os.path.exists(path), path) def test_014_commit_keep_0(self): ''' Test volume changes commit, with revisions_to_keep=0''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 0, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() self.loop.run_until_complete(volume.create()) self.assertFalse(volume.is_dirty()) path = volume.path expected_revisions = {} self.assertEqual(volume.revisions, expected_revisions) self.loop.run_until_complete(volume.start()) self.assertEqual(volume.revisions, expected_revisions) path_snap = '/dev/' + volume._vid_snap snap_uuid = self._get_lv_uuid(path_snap) self.assertTrue(volume.is_dirty()) self.assertEqual(volume.path, path) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [521065906] self.loop.run_until_complete(volume.stop()) self.assertFalse(volume.is_dirty()) self.assertEqual(volume.revisions, {}) self.assertEqual(volume.path, '/dev/' + volume.vid) self.assertEqual(snap_uuid, self._get_lv_uuid(volume.path)) self.assertFalse(os.path.exists(path_snap), path_snap) self.loop.run_until_complete(volume.remove()) def test_020_revert_last(self): ''' Test volume revert''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() self.loop.run_until_complete(volume.create()) self.loop.run_until_complete(volume.start()) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [521065906] self.loop.run_until_complete(volume.stop()) self.loop.run_until_complete(volume.start()) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [521065907] self.loop.run_until_complete(volume.stop()) self.assertEqual(len(volume.revisions), 2) revisions = volume.revisions revision_id = max(revisions.keys()) current_path = volume.path current_uuid = self._get_lv_uuid(volume.path) rev_uuid = self._get_lv_uuid(volume.vid + '-' + revision_id) self.assertFalse(volume.is_dirty()) self.assertNotEqual(current_uuid, rev_uuid) self.loop.run_until_complete(volume.revert()) path_snap = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path_snap), path_snap) self.assertEqual(current_path, volume.path) new_uuid = self._get_lv_origin_uuid(volume.path) self.assertEqual(new_uuid, rev_uuid) self.assertEqual(volume.revisions, revisions) self.loop.run_until_complete(volume.remove()) def test_021_revert_earlier(self): ''' Test volume revert''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # mock logging, to not interfere with time.time() mock volume.log = unittest.mock.Mock() self.loop.run_until_complete(volume.create()) self.loop.run_until_complete(volume.start()) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [521065906] self.loop.run_until_complete(volume.stop()) self.loop.run_until_complete(volume.start()) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [521065907] self.loop.run_until_complete(volume.stop()) self.assertEqual(len(volume.revisions), 2) revisions = volume.revisions revision_id = min(revisions.keys()) current_path = volume.path current_uuid = self._get_lv_uuid(volume.path) rev_uuid = self._get_lv_uuid(volume.vid + '-' + revision_id) self.assertFalse(volume.is_dirty()) self.assertNotEqual(current_uuid, rev_uuid) self.loop.run_until_complete(volume.revert(revision_id)) path_snap = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path_snap), path_snap) self.assertEqual(current_path, volume.path) new_uuid = self._get_lv_origin_uuid(volume.path) self.assertEqual(new_uuid, rev_uuid) self.assertEqual(volume.revisions, revisions) self.loop.run_until_complete(volume.remove()) def test_030_import_data(self): ''' Test volume import''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume.create()) current_uuid = self._get_lv_uuid(volume.path) self.assertFalse(volume.is_dirty()) import_path = self.loop.run_until_complete( volume.import_data(volume.size)) import_uuid = self._get_lv_uuid(import_path) self.assertNotEqual(current_uuid, import_uuid) # success - commit data self.loop.run_until_complete(volume.import_data_end(True)) new_current_uuid = self._get_lv_uuid(volume.path) self.assertEqual(new_current_uuid, import_uuid) revisions = volume.revisions self.assertEqual(len(revisions), 1) revision = revisions.popitem()[0] self.assertEqual(current_uuid, self._get_lv_uuid(volume.vid + '-' + revision)) self.assertFalse(os.path.exists(import_path), import_path) self.loop.run_until_complete(volume.remove()) def test_031_import_data_fail(self): ''' Test volume import''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume.create()) current_uuid = self._get_lv_uuid(volume.path) self.assertFalse(volume.is_dirty()) import_path = self.loop.run_until_complete( volume.import_data(volume.size)) import_uuid = self._get_lv_uuid(import_path) self.assertNotEqual(current_uuid, import_uuid) # fail - discard data self.loop.run_until_complete(volume.import_data_end(False)) new_current_uuid = self._get_lv_uuid(volume.path) self.assertEqual(new_current_uuid, current_uuid) revisions = volume.revisions self.assertEqual(len(revisions), 0) self.assertFalse(os.path.exists(import_path), import_path) self.loop.run_until_complete(volume.remove()) def test_032_import_volume_same_pool(self): '''Import volume from the same pool''' # source volume config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) source_volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(source_volume.create()) source_uuid = self._get_lv_uuid(source_volume.path) # destination volume config = { 'name': 'root2', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } volume = self.app.get_pool(self.pool.name).init_volume(vm, config) volume.log = unittest.mock.Mock() with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [1521065905] self.loop.run_until_complete(volume.create()) self.assertEqual(volume.revisions, {}) uuid_before = self._get_lv_uuid(volume.path) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [1521065906] self.loop.run_until_complete( volume.import_volume(source_volume)) uuid_after = self._get_lv_uuid(volume.path) self.assertNotEqual(uuid_after, uuid_before) # also should be different than source volume (clone, not the same LV) self.assertNotEqual(uuid_after, source_uuid) self.assertEqual(self._get_lv_origin_uuid(volume.path), source_uuid) expected_revisions = { '1521065906-back': '2018-03-14T22:18:26', } self.assertEqual(volume.revisions, expected_revisions) self.loop.run_until_complete(volume.remove()) self.loop.run_until_complete(source_volume.remove()) def test_033_import_volume_different_pool(self): '''Import volume from a different pool''' source_volume = unittest.mock.Mock() # destination volume config = { 'name': 'root2', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) volume.log = unittest.mock.Mock() with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [1521065905] self.loop.run_until_complete(volume.create()) self.assertEqual(volume.revisions, {}) uuid_before = self._get_lv_uuid(volume.path) with tempfile.NamedTemporaryFile() as source_volume_file: source_volume_file.write(b'test-content') source_volume_file.flush() source_volume.size = 16 * 1024 * 1024 # 16MiB source_volume.export.return_value = source_volume_file.name with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [1521065906] self.loop.run_until_complete( volume.import_volume(source_volume)) uuid_after = self._get_lv_uuid(volume.path) self.assertNotEqual(uuid_after, uuid_before) self.assertEqual(volume.size, 16 * 1024 * 1024) volume_content = subprocess.check_output(['sudo', 'cat', volume.path]) self.assertEqual(volume_content.rstrip(b'\0'), b'test-content') expected_revisions = { '1521065906-back': '2018-03-14T22:18:26', } self.assertEqual(volume.revisions, expected_revisions) self.loop.run_until_complete(volume.remove()) def test_034_import_data_empty(self): config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'size': 1024 * 1024, } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) with unittest.mock.patch('time.time') as mock_time: mock_time.side_effect = [1521065905] self.loop.run_until_complete(volume.create()) p = self.loop.run_until_complete(asyncio.create_subprocess_exec( 'sudo', 'dd', 'if=/dev/urandom', 'of=' + volume.path, 'count=1', 'bs=1M' )) self.loop.run_until_complete(p.wait()) import_path = self.loop.run_until_complete( volume.import_data(volume.size)) self.assertNotEqual(volume.path, import_path) p = self.loop.run_until_complete(asyncio.create_subprocess_exec( 'sudo', 'touch', import_path)) self.loop.run_until_complete(p.wait()) self.loop.run_until_complete(volume.import_data_end(True)) self.assertFalse(os.path.exists(import_path), import_path) p = self.loop.run_until_complete(asyncio.create_subprocess_exec( 'sudo', 'cat', volume.path, stdout=subprocess.PIPE )) volume_data, _ = self.loop.run_until_complete(p.communicate()) self.assertEqual(volume_data.strip(b'\0'), b'') def test_035_import_data_new_size(self): ''' Test volume import''' config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } new_size = 2 * qubes.config.defaults['root_img_size'] vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume.create()) self.loop.run_until_complete( volume.import_data(new_size)) self.loop.run_until_complete(volume.import_data_end(True)) self.assertEqual(volume.size, new_size) self.loop.run_until_complete(volume.remove()) def test_040_volatile(self): '''Volatile volume test''' config = { 'name': 'volatile', 'pool': self.pool.name, 'rw': True, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume = self.app.get_pool(self.pool.name).init_volume(vm, config) # volatile volume don't need any file, verify should succeed self.assertTrue(volume.verify()) self.loop.run_until_complete(volume.create()) self.assertTrue(volume.verify()) self.assertFalse(volume.save_on_stop) self.assertFalse(volume.snap_on_start) path = volume.path self.assertEqual(path, '/dev/' + volume.vid) self.assertFalse(os.path.exists(path)) self.loop.run_until_complete(volume.start()) self.assertTrue(os.path.exists(path)) vol_uuid = self._get_lv_uuid(path) self.loop.run_until_complete(volume.start()) self.assertTrue(os.path.exists(path)) vol_uuid2 = self._get_lv_uuid(path) self.assertNotEqual(vol_uuid, vol_uuid2) self.loop.run_until_complete(volume.stop()) self.assertFalse(os.path.exists(path)) def test_050_snapshot_volume(self): ''' Test snapshot volume creation ''' config_origin = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'size': qubes.config.defaults['root_img_size'], } vm = qubes.tests.storage.TestVM(self) volume_origin = self.app.get_pool(self.pool.name).init_volume( vm, config_origin) self.loop.run_until_complete(volume_origin.create()) config_snapshot = { 'name': 'root2', 'pool': self.pool.name, 'snap_on_start': True, 'source': volume_origin, 'rw': True, 'size': qubes.config.defaults['root_img_size'], } volume = self.app.get_pool(self.pool.name).init_volume( vm, config_snapshot) self.assertIsInstance(volume, VOLUME_CLASS) self.assertEqual(volume.name, 'root2') self.assertEqual(volume.pool, self.pool.name) self.assertEqual(volume.size, qubes.config.defaults['root_img_size']) # only origin volume really needs to exist, verify should succeed # even before create self.assertTrue(volume.verify()) self.loop.run_until_complete(volume.create()) path = volume.path self.assertEqual(path, '/dev/' + volume.vid) self.assertFalse(os.path.exists(path), path) self.loop.run_until_complete(volume.start()) # snapshot volume isn't considered dirty at any time self.assertFalse(volume.is_dirty()) # not outdated yet self.assertFalse(volume.is_outdated()) origin_uuid = self._get_lv_uuid(volume_origin.path) snap_origin_uuid = self._get_lv_origin_uuid(volume._vid_snap) self.assertEqual(origin_uuid, snap_origin_uuid) # now make it outdated self.loop.run_until_complete(volume_origin.start()) self.loop.run_until_complete(volume_origin.stop()) self.assertTrue(volume.is_outdated()) origin_uuid = self._get_lv_uuid(volume_origin.path) self.assertNotEqual(origin_uuid, snap_origin_uuid) self.loop.run_until_complete(volume.stop()) # stopped volume is never outdated self.assertFalse(volume.is_outdated()) path = volume.path self.assertFalse(os.path.exists(path), path) path = '/dev/' + volume._vid_snap self.assertFalse(os.path.exists(path), path) self.loop.run_until_complete(volume.remove()) self.loop.run_until_complete(volume_origin.remove()) def test_100_pool_list_volumes(self): config = { 'name': 'root', 'pool': self.pool.name, 'save_on_stop': True, 'rw': True, 'revisions_to_keep': 2, 'size': qubes.config.defaults['root_img_size'], } config2 = config.copy() vm = qubes.tests.storage.TestVM(self) volume1 = self.app.get_pool(self.pool.name).init_volume(vm, config) self.loop.run_until_complete(volume1.create()) config2['name'] = 'private' volume2 = self.app.get_pool(self.pool.name).init_volume(vm, config2) self.loop.run_until_complete(volume2.create()) # create some revisions self.loop.run_until_complete(volume1.start()) self.loop.run_until_complete(volume1.stop()) # and have one in dirty state self.loop.run_until_complete(volume2.start()) self.assertIn(volume1, list(self.pool.volumes)) self.assertIn(volume2, list(self.pool.volumes)) self.loop.run_until_complete(volume1.remove()) self.assertNotIn(volume1, list(self.pool.volumes)) self.assertIn(volume2, list(self.pool.volumes)) self.loop.run_until_complete(volume2.remove()) self.assertNotIn(volume1, list(self.pool.volumes)) self.assertNotIn(volume1, list(self.pool.volumes)) def test_110_metadata_size(self): with self.assertNotRaises(NotImplementedError): usage = self.pool.usage_details metadata_size = usage['metadata_size'] environ = os.environ.copy() environ['LC_ALL'] = 'C.utf8' pool_size = subprocess.check_output(['sudo', 'lvs', '--noheadings', '-o', 'lv_metadata_size', '--units', 'b', self.pool.volume_group + '/' + self.pool.thin_pool], env=environ) self.assertEqual(metadata_size, int(pool_size.strip()[:-1])) def test_111_metadata_usage(self): with self.assertNotRaises(NotImplementedError): usage = self.pool.usage_details metadata_usage = usage['metadata_usage'] environ = os.environ.copy() environ['LC_ALL'] = 'C.utf8' pool_info = subprocess.check_output(['sudo', 'lvs', '--noheadings', '-o', 'lv_metadata_size,metadata_percent', '--units', 'b', self.pool.volume_group + '/' + self.pool.thin_pool], env=environ) pool_size, pool_usage = pool_info.strip().split() pool_size = int(pool_size[:-1]) pool_usage = float(pool_usage) self.assertEqual(metadata_usage, int(pool_size * pool_usage / 100)) @skipUnlessLvmPoolExists class TC_01_ThinPool(ThinPoolBase, qubes.tests.SystemTestCase): ''' Sanity tests for :py:class:`qubes.storage.lvm.ThinPool` ''' def setUp(self, **kwargs): super().setUp(**kwargs) self.init_default_template() def test_004_import(self): template_vm = self.app.default_template name = self.make_vm_name('import') vm = self.app.add_new_vm(qubes.vm.templatevm.TemplateVM, name=name, label='red') vm.clone_properties(template_vm) self.loop.run_until_complete( vm.clone_disk_files(template_vm, pool=self.pool.name)) for v_name, volume in vm.volumes.items(): if volume.save_on_stop: expected = "/dev/{!s}/vm-{!s}-{!s}".format( DEFAULT_LVM_POOL.split('/')[0], vm.name, v_name) self.assertEqual(volume.path, expected) with self.assertNotRaises(qubes.exc.QubesException): self.loop.run_until_complete(vm.start()) def test_005_create_appvm(self): vm = self.app.add_new_vm(cls=qubes.vm.appvm.AppVM, name=self.make_vm_name('appvm'), label='red') self.loop.run_until_complete(vm.create_on_disk(pool=self.pool.name)) for v_name, volume in vm.volumes.items(): if volume.save_on_stop: expected = "/dev/{!s}/vm-{!s}-{!s}".format( DEFAULT_LVM_POOL.split('/')[0], vm.name, v_name) self.assertEqual(volume.path, expected) with self.assertNotRaises(qubes.exc.QubesException): self.loop.run_until_complete(vm.start()) def test_006_name_suffix_parse(self): '''Regression test for #4680''' vm1 = self.app.add_new_vm(cls=qubes.vm.appvm.AppVM, name=self.make_vm_name('appvm'), label='red') vm2 = self.app.add_new_vm(cls=qubes.vm.appvm.AppVM, name=self.make_vm_name('appvm-root'), label='red') self.loop.run_until_complete(asyncio.wait([ vm1.create_on_disk(pool=self.pool.name), vm2.create_on_disk(pool=self.pool.name)])) self.loop.run_until_complete(vm2.start()) self.loop.run_until_complete(vm2.shutdown(wait=True)) with self.assertNotRaises(ValueError): vm1.volumes['root'].size @skipUnlessLvmPoolExists class TC_02_StorageHelpers(ThinPoolBase): def setUp(self, **kwargs): xml_path = '/tmp/qubes-test.xml' self.app = qubes.Qubes.create_empty_store(store=xml_path, clockvm=None, updatevm=None, offline_mode=True, ) os.environ['QUBES_XML_PATH'] = xml_path super().setUp(**kwargs) # reset cache qubes.storage.DirectoryThinPool._thin_pool = {} self.thin_dir = tempfile.TemporaryDirectory() subprocess.check_call( ['sudo', 'lvcreate', '-q', '-V', '32M', '-T', DEFAULT_LVM_POOL, '-n', 'test-file-pool'], stdout=subprocess.DEVNULL) self.thin_dev = '/dev/{}/test-file-pool'.format( DEFAULT_LVM_POOL.split('/')[0]) subprocess.check_call(['udevadm', 'settle']) subprocess.check_call( ['sudo', 'mkfs.ext4', '-q', self.thin_dev]) subprocess.check_call(['sudo', 'mount', self.thin_dev, self.thin_dir.name]) subprocess.check_call(['sudo', 'chmod', '777', self.thin_dir.name]) def tearDown(self): subprocess.check_call(['sudo', 'umount', self.thin_dir.name]) subprocess.check_call( ['sudo', 'lvremove', '-q', '-f', self.thin_dev], stdout = subprocess.DEVNULL) self.thin_dir.cleanup() super(TC_02_StorageHelpers, self).tearDown() os.unlink(self.app.store) self.app.close() del self.app for attr in dir(self): if isinstance(getattr(self, attr), qubes.vm.BaseVM): delattr(self, attr) def test_000_search_thin_pool(self): pool = qubes.storage.search_pool_containing_dir( self.app.pools.values(), self.thin_dir.name) self.assertEqual(pool, self.pool) def test_001_search_none(self): pool = qubes.storage.search_pool_containing_dir( self.app.pools.values(), '/tmp') self.assertIsNone(pool) def test_002_search_subdir(self): subdir = os.path.join(self.thin_dir.name, 'some-dir') os.mkdir(subdir) pool = qubes.storage.search_pool_containing_dir( self.app.pools.values(), subdir) self.assertEqual(pool, self.pool) def test_003_search_file_pool(self): subdir = os.path.join(self.thin_dir.name, 'some-dir') file_pool_config = { 'name': 'test-file-pool', 'driver': 'file', 'dir_path': subdir } pool2 = self.loop.run_until_complete( self.app.add_pool(**file_pool_config)) pool = qubes.storage.search_pool_containing_dir( self.app.pools.values(), subdir) self.assertEqual(pool, pool2) pool = qubes.storage.search_pool_containing_dir( self.app.pools.values(), self.thin_dir.name) self.assertEqual(pool, self.pool)