Improve test coverage for share migration

- Added tests to validate the migration functionality
for a replicated share.
- Added tests to validate the extend and shrink
functionality on migrated share.
- Added tests to cover the preserve snapshot
functionality on migrated share.
- Current waiter logic in migration_progress
method of dummy driver causes every migration
test to take over 4 minutes to complete.
Therefore, updated the method to cut the
overall time in half and avoid the possible timeout.

Partially-Implements: bp ocata-migration-improvements
Change-Id: Ia7c7eb7b48b464aa670073e8c0795369bd972678
This commit is contained in:
yogesh 2016-10-25 14:57:11 -04:00
parent c54367035d
commit 301abe6257
8 changed files with 372 additions and 32 deletions

View File

@ -77,6 +77,7 @@ RUN_MANILA_REPLICATION_TESTS=${RUN_MANILA_REPLICATION_TESTS:-False}
RUN_MANILA_HOST_ASSISTED_MIGRATION_TESTS=${RUN_MANILA_HOST_ASSISTED_MIGRATION_TESTS:-False}
RUN_MANILA_DRIVER_ASSISTED_MIGRATION_TESTS=${RUN_MANILA_DRIVER_ASSISTED_MIGRATION_TESTS:-False}
RUN_MANILA_MOUNT_SNAPSHOT_TESTS=${RUN_MANILA_MOUNT_SNAPSHOT_TESTS:-False}
RUN_MANILA_MIGRATION_WITH_PRESERVE_SNAPSHOTS_TESTS=${RUN_MANILA_MIGRATION_WITH_PRESERVE_SNAPSHOTS_TESTS:-False}
MANILA_CONF=${MANILA_CONF:-/etc/manila/manila.conf}
@ -216,6 +217,7 @@ elif [[ "$DRIVER" == "dummy" ]]; then
RUN_MANILA_DRIVER_ASSISTED_MIGRATION_TESTS=True
RUN_MANILA_REVERT_TO_SNAPSHOT_TESTS=True
RUN_MANILA_MOUNT_SNAPSHOT_TESTS=True
RUN_MANILA_MIGRATION_WITH_PRESERVE_SNAPSHOTS_TESTS=True
iniset $TEMPEST_CONFIG share enable_ip_rules_for_protocols 'nfs'
iniset $TEMPEST_CONFIG share enable_user_rules_for_protocols 'cifs'
iniset $TEMPEST_CONFIG share enable_cert_rules_for_protocols ''
@ -270,6 +272,7 @@ iniset $TEMPEST_CONFIG share run_replication_tests $RUN_MANILA_REPLICATION_TESTS
# Enable migration tests
iniset $TEMPEST_CONFIG share run_host_assisted_migration_tests $RUN_MANILA_HOST_ASSISTED_MIGRATION_TESTS
iniset $TEMPEST_CONFIG share run_driver_assisted_migration_tests $RUN_MANILA_DRIVER_ASSISTED_MIGRATION_TESTS
iniset $TEMPEST_CONFIG share run_migration_with_preserve_snapshots_tests $RUN_MANILA_MIGRATION_WITH_PRESERVE_SNAPSHOTS_TESTS
# Enable mountable snapshots tests
iniset $TEMPEST_CONFIG share run_mount_snapshot_tests $RUN_MANILA_MOUNT_SNAPSHOT_TESTS

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@ -78,7 +78,7 @@ dummy_opts = [
"update_replicated_snapshot": "1.17",
"migration_start": 1.01,
"migration_continue": 1.02, # it will be called 4 times
"migration_continue": 1.02, # it will be called 2 times
"migration_complete": 1.03,
"migration_cancel": 1.04,
"migration_get_progress": 1.05,
@ -548,7 +548,7 @@ class DummyDriver(driver.ShareDriver):
if source_share["id"] not in self.migration_progress:
self.migration_progress[source_share["id"]] = 0
self.migration_progress[source_share["id"]] += 25
self.migration_progress[source_share["id"]] += 50
LOG.debug(
"Migration of dummy share with ID '%s' is continuing, %s." %

View File

@ -14,6 +14,8 @@
STATUS_ERROR = 'error'
STATUS_AVAILABLE = 'available'
STATUS_ERROR_DELETING = 'error_deleting'
STATUS_MIGRATING = 'migrating'
TEMPEST_MANILA_PREFIX = 'tempest-manila'
# Replication

View File

@ -192,6 +192,10 @@ ShareGroup = [
deprecated_name="run_migration_tests",
default=False,
help="Enable or disable driver-assisted migration tests."),
cfg.BoolOpt("run_migration_with_preserve_snapshots_tests",
default=False,
help="Enable or disable migration with "
"preserve_snapshots tests set to True."),
cfg.BoolOpt("run_manage_unmanage_tests",
default=False,
help="Defines whether to run manage/unmanage tests or not. "

View File

@ -493,6 +493,15 @@ class SharesV2Client(shares_client.SharesClient):
self.expected_success(200, resp.status)
return self._parse_resp(body)
def list_snapshots_for_share(self, share_id, detailed=False,
version=LATEST_MICROVERSION):
"""Get list of snapshots for given share."""
uri = ('snapshots/detail?share_id=%s' % share_id
if detailed else 'snapshots?share_id=%s' % share_id)
resp, body = self.get(uri, version=version)
self.expected_success(200, resp.status)
return self._parse_resp(body)
def list_snapshots_with_detail(self, params=None,
version=LATEST_MICROVERSION):
"""Get detailed list of share snapshots w/o filters."""

View File

@ -17,6 +17,7 @@
import ddt
from tempest import config
from tempest.lib.common.utils import data_utils
import testtools
from testtools import testcase as tc
from manila_tempest_tests.common import constants
@ -63,6 +64,11 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
if not (CONF.share.run_host_assisted_migration_tests or
CONF.share.run_driver_assisted_migration_tests):
raise cls.skipException("Share migration tests are disabled.")
cls.pools = cls.shares_v2_client.list_pools(detail=True)['pools']
if len(cls.pools) < 2:
raise cls.skipException("At least two different pool entries are "
"needed to run share migration tests.")
cls.new_type = cls.create_share_type(
name=data_utils.rand_name('new_share_type_for_migration'),
@ -82,7 +88,10 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
self._check_migration_enabled(force_host_assisted)
share, dest_pool = self._setup_migration()
share = self.create_share(self.protocol)
share = self.shares_v2_client.get_share(share['id'])
share, dest_pool = self._setup_migration(share)
task_state = (constants.TASK_STATE_DATA_COPYING_COMPLETED
if force_host_assisted
@ -119,10 +128,6 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
self._check_migration_enabled(force_host_assisted)
share, dest_pool = self._setup_migration(opposite=True)
old_share_network_id = share['share_network_id']
# If currently configured is DHSS=False,
# then we need it for DHSS=True
if not CONF.share.multitenancy_enabled:
@ -136,6 +141,12 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
else:
new_share_network_id = None
share = self.create_share(self.protocol)
share = self.shares_v2_client.get_share(share['id'])
share, dest_pool = self._setup_migration(share, opposite=True)
old_share_network_id = share['share_network_id']
old_share_type_id = share['share_type']
new_share_type_id = self.new_type_opposite['share_type']['id']
@ -179,22 +190,15 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
self._check_migration_enabled(force_host_assisted)
share, dest_pool = self._setup_migration()
share = self.create_share(self.protocol)
share = self.shares_v2_client.get_share(share['id'])
task_state = (constants.TASK_STATE_DATA_COPYING_COMPLETED
if force_host_assisted
else constants.TASK_STATE_MIGRATION_DRIVER_PHASE1_DONE)
share, dest_pool = self._setup_migration(share)
old_share_network_id = share['share_network_id']
if CONF.share.multitenancy_enabled:
new_share_network_id = self._create_secondary_share_network(
old_share_network_id)
else:
new_share_network_id = None
old_share_type_id = share['share_type']
new_share_type_id = self.new_type['share_type']['id']
task_state, new_share_network_id, new_share_type_id = (
self._get_migration_data(share, force_host_assisted))
share = self.migrate_share(
share['id'], dest_pool,
@ -224,18 +228,111 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
dest_pool, share, constants.TASK_STATE_MIGRATION_SUCCESS,
complete=True, share_network_id=new_share_network_id,
share_type_id=new_share_type_id)
self._cleanup_share(share)
def _setup_migration(self, opposite=False):
@tc.attr(base.TAG_POSITIVE, base.TAG_BACKEND)
@base.skip_if_microversion_lt("2.29")
@testtools.skipUnless(CONF.share.run_extend_tests,
'Extend share tests are disabled.')
@ddt.data(True, False)
def test_extend_on_migrated_share(self, force_host_assisted):
self._test_resize_post_migration(force_host_assisted, resize='extend')
pools = self.shares_v2_client.list_pools(detail=True)['pools']
@tc.attr(base.TAG_POSITIVE, base.TAG_BACKEND)
@base.skip_if_microversion_lt("2.29")
@testtools.skipUnless(CONF.share.run_shrink_tests,
'Shrink share tests are disabled.')
@ddt.data(True, False)
def test_shrink_on_migrated_share(self, force_host_assisted):
self._test_resize_post_migration(force_host_assisted, resize='shrink')
if len(pools) < 2:
raise self.skipException("At least two different pool entries are "
"needed to run share migration tests.")
@tc.attr(base.TAG_POSITIVE, base.TAG_BACKEND)
@base.skip_if_microversion_lt("2.29")
@testtools.skipUnless(CONF.share.run_snapshot_tests,
'Snapshot tests are disabled.')
@testtools.skipUnless(CONF.share.run_driver_assisted_migration_tests,
'Driver-assisted migration tests are disabled.')
@testtools.skipUnless(
CONF.share.run_migration_with_preserve_snapshots_tests,
'Migration with preserve snapshots tests are disabled.')
def test_migrating_share_with_snapshot(self):
ss_type, __ = self._create_share_type_for_snapshot_capability()
share = self.create_share(self.protocol, cleanup_in_class=False)
share = self.shares_v2_client.get_share(share['id'])
share, dest_pool = self._setup_migration(share)
snapshot1 = self.create_snapshot_wait_for_active(
share['id'], cleanup_in_class=False)
snapshot2 = self.create_snapshot_wait_for_active(
share['id'], cleanup_in_class=False)
task_state, new_share_network_id, __ = self._get_migration_data(share)
share = self.migrate_share(
share['id'], dest_pool,
wait_for_status=task_state,
new_share_type_id=ss_type['share_type']['id'],
new_share_network_id=new_share_network_id, preserve_snapshots=True)
share = self.migration_complete(share['id'], dest_pool)
self._validate_snapshot(share, snapshot1, snapshot2)
@tc.attr(base.TAG_POSITIVE, base.TAG_BACKEND)
@base.skip_if_microversion_lt("2.29")
@testtools.skipUnless(CONF.share.run_snapshot_tests,
'Snapshot tests are disabled.')
@testtools.skipUnless(CONF.share.run_driver_assisted_migration_tests,
'Driver-assisted migration tests are disabled.')
@testtools.skipUnless(
CONF.share.run_migration_with_preserve_snapshots_tests,
'Migration with preserve snapshots tests are disabled.')
def test_migration_cancel_share_with_snapshot(self):
share = self.create_share(self.protocol)
share = self.shares_v2_client.get_share(share['id'])
share, dest_pool = self._setup_migration(share)
snapshot1 = self.create_snapshot_wait_for_active(share['id'])
snapshot2 = self.create_snapshot_wait_for_active(share['id'])
task_state, new_share_network_id, new_share_type_id = (
self._get_migration_data(share))
share = self.migrate_share(
share['id'], dest_pool,
wait_for_status=task_state, new_share_type_id=new_share_type_id,
new_share_network_id=new_share_network_id, preserve_snapshots=True)
share = self.migration_cancel(share['id'], dest_pool)
self._validate_snapshot(share, snapshot1, snapshot2)
@tc.attr(base.TAG_POSITIVE, base.TAG_BACKEND)
@base.skip_if_microversion_lt("2.29")
@testtools.skipUnless(CONF.share.run_snapshot_tests,
'Snapshot tests are disabled.')
@ddt.data(True, False)
def test_migrate_share_to_snapshot_capability_share_type(
self, force_host_assisted):
# Verify that share with no snapshot support type can be migrated
# to new share type which supports the snapshot
self._validate_share_migration_with_different_snapshot_capability_type(
force_host_assisted, True)
@tc.attr(base.TAG_POSITIVE, base.TAG_BACKEND)
@base.skip_if_microversion_lt("2.29")
@testtools.skipUnless(CONF.share.run_snapshot_tests,
'Snapshot tests are disabled.')
@ddt.data(True, False)
def test_migrate_share_to_no_snapshot_capability_share_type(
self, force_host_assisted):
# Verify that share with snapshot support type can be migrated
# to new share type which doesn't support the snapshot
self._validate_share_migration_with_different_snapshot_capability_type(
force_host_assisted, False)
def _setup_migration(self, share, opposite=False):
old_exports = self.shares_v2_client.list_share_export_locations(
share['id'])
self.assertNotEmpty(old_exports)
@ -262,7 +359,7 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
else:
dest_type = self.new_type['share_type']
dest_pool = utils.choose_matching_backend(share, pools, dest_type)
dest_pool = utils.choose_matching_backend(share, self.pools, dest_type)
if opposite:
if not dest_pool:
@ -274,6 +371,7 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
self.assertIsNotNone(dest_pool.get('name'))
dest_pool = dest_pool['name']
share = self.shares_v2_client.get_share(share['id'])
return share, dest_pool
@ -325,10 +423,6 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
self.assertIn(r, filtered_rules)
self.assertEqual(len(expected_rules), len(filtered_rules))
self.shares_v2_client.delete_share(share['id'])
self.shares_v2_client.wait_for_resource_deletion(
share_id=share['id'])
# Share not migrated yet
else:
self.assertNotEqual(dest_pool, share['host'])
@ -355,3 +449,144 @@ class MigrationNFSTest(base.BaseSharesAdminTest):
neutron_subnet_id=old_share_network['neutron_subnet_id'])
return new_share_network['id']
def _test_resize_post_migration(self, force_host_assisted, resize):
self._check_migration_enabled(force_host_assisted)
new_size = CONF.share.share_size + 1
share = self.create_share(self.protocol, size=new_size)
share = self.shares_v2_client.get_share(share['id'])
share, dest_pool = self._setup_migration(share)
task_state, new_share_network_id, new_share_type_id = (
self._get_migration_data(share, force_host_assisted))
share = self.migrate_share(
share['id'], dest_pool,
force_host_assisted_migration=force_host_assisted,
wait_for_status=task_state, new_share_type_id=new_share_type_id,
new_share_network_id=new_share_network_id)
share = self.migration_complete(share['id'], dest_pool)
if resize == 'extend':
new_size = CONF.share.share_size + 2
self.shares_v2_client.extend_share(share['id'], new_size)
self.shares_v2_client.wait_for_share_status(
share['id'], constants.STATUS_AVAILABLE)
share = self.shares_v2_client.get_share(share["id"])
self.assertEqual(new_size, int(share["size"]))
else:
new_size = CONF.share.share_size
self.shares_v2_client.shrink_share(share['id'], new_size)
self.shares_v2_client.wait_for_share_status(
share['id'], constants.STATUS_AVAILABLE)
share = self.shares_v2_client.get_share(share["id"])
self.assertEqual(new_size, int(share["size"]))
self._cleanup_share(share)
def _get_migration_data(self, share, force_host_assisted=False):
task_state = (constants.TASK_STATE_DATA_COPYING_COMPLETED
if force_host_assisted
else constants.TASK_STATE_MIGRATION_DRIVER_PHASE1_DONE)
old_share_network_id = share['share_network_id']
if CONF.share.multitenancy_enabled:
new_share_network_id = self._create_secondary_share_network(
old_share_network_id)
else:
new_share_network_id = None
new_share_type_id = self.new_type['share_type']['id']
return task_state, new_share_network_id, new_share_type_id
def _validate_snapshot(self, share, snapshot1, snapshot2):
snapshot_list = self.shares_v2_client.list_snapshots_for_share(
share['id'])
msg = "Share %s has no snapshot." % share['id']
# Verify that snapshot list is not empty
self.assertNotEmpty(snapshot_list, msg)
snapshot_id_list = [snap['id'] for snap in snapshot_list]
# verify that after migration original snapshots are retained
self.assertIn(snapshot1['id'], snapshot_id_list)
self.assertIn(snapshot2['id'], snapshot_id_list)
# Verify that a share can be created from a snapshot after migration
snapshot1_share = self.create_share(
self.protocol, size=share['size'], snapshot_id=snapshot1['id'],
share_network_id=share['share_network_id'])
self.assertEqual(snapshot1['id'], snapshot1_share['snapshot_id'])
self._cleanup_share(share)
def _validate_share_migration_with_different_snapshot_capability_type(
self, force_host_assisted, snapshot_capable):
self._check_migration_enabled(force_host_assisted)
ss_type, no_ss_type = self._create_share_type_for_snapshot_capability()
if snapshot_capable:
share_type = ss_type['share_type']
share_type_id = no_ss_type['share_type']['id']
new_share_type_id = ss_type['share_type']['id']
else:
share_type = no_ss_type['share_type']
share_type_id = ss_type['share_type']['id']
new_share_type_id = no_ss_type['share_type']['id']
share = self.create_share(
self.protocol, share_type_id=share_type_id)
share = self.shares_v2_client.get_share(share['id'])
if snapshot_capable:
self.assertEqual(False, share['snapshot_support'])
else:
# Verify that share has snapshot support capability
self.assertTrue(share['snapshot_support'])
dest_pool = utils.choose_matching_backend(share, self.pools,
share_type)
task_state, new_share_network_id, __ = (
self._get_migration_data(share, force_host_assisted))
share = self.migrate_share(
share['id'], dest_pool['name'],
force_host_assisted_migration=force_host_assisted,
wait_for_status=task_state,
new_share_type_id=new_share_type_id,
new_share_network_id=new_share_network_id)
share = self.migration_complete(share['id'], dest_pool)
if snapshot_capable:
# Verify that migrated share does have snapshot support capability
self.assertTrue(share['snapshot_support'])
else:
# Verify that migrated share don't have snapshot support capability
self.assertEqual(False, share['snapshot_support'])
self._cleanup_share(share)
def _create_share_type_for_snapshot_capability(self):
# Share type with snapshot support
st_name = data_utils.rand_name(
'snapshot_capable_share_type_for_migration')
extra_specs = self.add_extra_specs_to_dict({"snapshot_support": True})
ss_type = self.create_share_type(st_name, extra_specs=extra_specs)
# New share type with no snapshot support capability
# to which a share will be migrated
new_st_name = data_utils.rand_name(
'snapshot_noncapable_share_type_for_migration')
extra_specs = {
"driver_handles_share_servers": CONF.share.multitenancy_enabled
}
no_ss_type = self.create_share_type(new_st_name,
extra_specs=extra_specs)
return ss_type, no_ss_type
def _cleanup_share(self, share):
resource = {"type": "share", "id": share["id"],
"client": self.shares_v2_client}
# NOTE(Yogi1): Share needs to be cleaned up explicitly at the end of
# test otherwise, newly created share_network will not get cleaned up.
self.method_resources.insert(0, resource)

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@ -54,7 +54,8 @@ class MigrationNegativeTest(base.BaseSharesAdminTest):
raise cls.skipException("At least two different pool entries "
"are needed to run share migration tests.")
cls.share = cls.create_share(cls.protocol)
cls.share = cls.create_share(cls.protocol,
size=CONF.share.share_size+1)
cls.share = cls.shares_client.get_share(cls.share['id'])
cls.default_type = cls.shares_v2_client.list_share_types(
@ -130,8 +131,9 @@ class MigrationNegativeTest(base.BaseSharesAdminTest):
lib_exc.Conflict, self.shares_v2_client.migrate_share,
self.share['id'], self.dest_pool,
force_host_assisted_migration=True)
self.shares_client.delete_snapshot(snap['id'])
self.shares_client.wait_for_resource_deletion(snapshot_id=snap["id"])
self.shares_v2_client.delete_snapshot(snap['id'])
self.shares_v2_client.wait_for_resource_deletion(snapshot_id=snap[
"id"])
@tc.attr(base.TAG_NEGATIVE, base.TAG_API_WITH_BACKEND)
@base.skip_if_microversion_lt("2.29")
@ -258,3 +260,67 @@ class MigrationNegativeTest(base.BaseSharesAdminTest):
self.share['id'], self.dest_pool,
new_share_type_id=new_type_opposite['share_type']['id'],
new_share_network_id=new_share_network_id)
@testtools.skipUnless(CONF.share.run_driver_assisted_migration_tests,
"Driver-assisted migration tests are disabled.")
@tc.attr(base.TAG_NEGATIVE, base.TAG_API_WITH_BACKEND)
@base.skip_if_microversion_lt("2.29")
def test_create_snapshot_during_share_migration(self):
self._test_share_actions_during_share_migration('create_snapshot', [])
@tc.attr(base.TAG_NEGATIVE, base.TAG_API_WITH_BACKEND)
@base.skip_if_microversion_lt("2.29")
@ddt.data(('extend_share', [CONF.share.share_size + 2]),
('shrink_share', [CONF.share.share_size]))
@ddt.unpack
def test_share_resize_during_share_migration(self, method_name, *args):
self._test_share_actions_during_share_migration(method_name, *args)
def skip_if_tests_are_disabled(self, method_name):
property_to_evaluate = {
'extend_share': CONF.share.run_extend_tests,
'shrink_share': CONF.share.run_shrink_tests,
'create_snapshot': CONF.share.run_snapshot_tests,
}
if not property_to_evaluate[method_name]:
raise self.skipException(method_name + 'tests are disabled.')
@tc.attr(base.TAG_NEGATIVE, base.TAG_API_WITH_BACKEND)
@base.skip_if_microversion_lt("2.29")
def test_add_access_rule_during_migration(self):
access_type = "ip"
access_to = "50.50.50.50"
self.shares_v2_client.reset_state(self.share['id'],
constants.STATUS_MIGRATING)
self.shares_v2_client.reset_task_state(
self.share['id'],
constants.TASK_STATE_MIGRATION_DRIVER_PHASE1_DONE)
self.assertRaises(
lib_exc.BadRequest,
self.shares_v2_client.create_access_rule,
self.share['id'], access_type, access_to)
# Revert the migration state by cancelling the migration
self.shares_v2_client.reset_state(self.share['id'],
constants.STATUS_AVAILABLE)
self.shares_v2_client.reset_task_state(
self.share['id'],
constants.TASK_STATE_MIGRATION_CANCELLED)
def _test_share_actions_during_share_migration(self, method_name, *args):
self.skip_if_tests_are_disabled(method_name)
# Verify various share operations during share migration
self.shares_v2_client.reset_state(self.share['id'],
constants.STATUS_MIGRATING)
self.shares_v2_client.reset_task_state(
self.share['id'],
constants.TASK_STATE_MIGRATION_DRIVER_PHASE1_DONE)
self.assertRaises(
lib_exc.BadRequest, getattr(self.shares_v2_client, method_name),
self.share['id'], *args)
# Revert the migration state by cancelling the migration
self.shares_v2_client.reset_state(self.share['id'],
constants.STATUS_AVAILABLE)
self.shares_v2_client.reset_task_state(
self.share['id'],
constants.TASK_STATE_MIGRATION_CANCELLED)

View File

@ -175,6 +175,27 @@ class ReplicationNegativeTest(base.BaseSharesMixedTest):
self.admin_client.create_access_rule,
self.share1["id"], access_type, access_to, 'ro')
@testtools.skipUnless(CONF.share.run_host_assisted_migration_tests or
CONF.share.run_driver_assisted_migration_tests,
"Share migration tests are disabled.")
@tc.attr(base.TAG_NEGATIVE, base.TAG_API_WITH_BACKEND)
@base.skip_if_microversion_lt("2.29")
def test_migration_of_replicated_share(self):
pools = self.admin_client.list_pools(detail=True)['pools']
hosts = [p['name'] for p in pools]
self.create_share_replica(self.share1["id"], self.replica_zone,
cleanup_in_class=False)
share_host = self.share1['host']
for host in hosts:
if host != share_host:
dest_host = host
break
self.assertRaises(
lib_exc.Conflict, self.admin_client.migrate_share,
self.share1['id'], dest_host)
@testtools.skipUnless(CONF.share.run_replication_tests,
'Replication tests are disabled.')