--- /dev/null
+import json
+import logging
+from unittest import case, SkipTest
+
+from cephfs_test_case import CephFSTestCase
+from teuthology.exceptions import CommandFailedError
+from teuthology import misc as teuthology
+from tasks.cephfs.fuse_mount import FuseMount
+
+log = logging.getLogger(__name__)
+
+
+class TestFailover(CephFSTestCase):
+ CLIENTS_REQUIRED = 1
+ MDSS_REQUIRED = 2
+
+ def test_simple(self):
+ """
+ That when the active MDS is killed, a standby MDS is promoted into
+ its rank after the grace period.
+
+ This is just a simple unit test, the harder cases are covered
+ in thrashing tests.
+ """
+
+ # Need all my standbys up as well as the active daemons
+ self.wait_for_daemon_start()
+
+ (original_active, ) = self.fs.get_active_names()
+ original_standbys = self.mds_cluster.get_standby_daemons()
+
+ # Kill the rank 0 daemon's physical process
+ self.fs.mds_stop(original_active)
+
+ grace = float(self.fs.get_config("mds_beacon_grace", service_type="mon"))
+
+ # Wait until the monitor promotes his replacement
+ def promoted():
+ active = self.fs.get_active_names()
+ return active and active[0] in original_standbys
+
+ log.info("Waiting for promotion of one of the original standbys {0}".format(
+ original_standbys))
+ self.wait_until_true(
+ promoted,
+ timeout=grace*2)
+
+ # Start the original rank 0 daemon up again, see that he becomes a standby
+ self.fs.mds_restart(original_active)
+ self.wait_until_true(
+ lambda: original_active in self.mds_cluster.get_standby_daemons(),
+ timeout=60 # Approximately long enough for MDS to start and mon to notice
+ )
+
+ def test_client_abort(self):
+ """
+ That a client will respect fuse_require_active_mds and error out
+ when the cluster appears to be unavailable.
+ """
+
+ if not isinstance(self.mount_a, FuseMount):
+ raise SkipTest("Requires FUSE client to inject client metadata")
+
+ require_active = self.fs.get_config("fuse_require_active_mds", service_type="mon").lower() == "true"
+ if not require_active:
+ raise case.SkipTest("fuse_require_active_mds is not set")
+
+ grace = float(self.fs.get_config("mds_beacon_grace", service_type="mon"))
+
+ # Check it's not laggy to begin with
+ (original_active, ) = self.fs.get_active_names()
+ self.assertNotIn("laggy_since", self.fs.mon_manager.get_mds_status(original_active))
+
+ self.mounts[0].umount_wait()
+
+ # Control: that we can mount and unmount usually, while the cluster is healthy
+ self.mounts[0].mount()
+ self.mounts[0].wait_until_mounted()
+ self.mounts[0].umount_wait()
+
+ # Stop the daemon processes
+ self.fs.mds_stop()
+
+ # Wait for everyone to go laggy
+ def laggy():
+ mdsmap = self.fs.get_mds_map()
+ for info in mdsmap['info'].values():
+ if "laggy_since" not in info:
+ return False
+
+ return True
+
+ self.wait_until_true(laggy, grace * 2)
+ with self.assertRaises(CommandFailedError):
+ self.mounts[0].mount()
+
+ def test_standby_count_wanted(self):
+ """
+ That cluster health warnings are generated by insufficient standbys available.
+ """
+
+ # Need all my standbys up as well as the active daemons
+ self.wait_for_daemon_start()
+
+ grace = float(self.fs.get_config("mds_beacon_grace", service_type="mon"))
+
+ standbys = self.mds_cluster.get_standby_daemons()
+ self.assertGreaterEqual(len(standbys), 1)
+ self.fs.mon_manager.raw_cluster_cmd('fs', 'set', self.fs.name, 'standby_count_wanted', str(len(standbys)))
+
+ # Kill a standby and check for warning
+ victim = standbys.pop()
+ self.fs.mds_stop(victim)
+ log.info("waiting for insufficient standby daemon warning")
+ self.wait_for_health("MDS_INSUFFICIENT_STANDBY", grace*2)
+
+ # restart the standby, see that he becomes a standby, check health clears
+ self.fs.mds_restart(victim)
+ self.wait_until_true(
+ lambda: victim in self.mds_cluster.get_standby_daemons(),
+ timeout=60 # Approximately long enough for MDS to start and mon to notice
+ )
+ self.wait_for_health_clear(timeout=30)
+
+ # Set it one greater than standbys ever seen
+ standbys = self.mds_cluster.get_standby_daemons()
+ self.assertGreaterEqual(len(standbys), 1)
+ self.fs.mon_manager.raw_cluster_cmd('fs', 'set', self.fs.name, 'standby_count_wanted', str(len(standbys)+1))
+ log.info("waiting for insufficient standby daemon warning")
+ self.wait_for_health("MDS_INSUFFICIENT_STANDBY", grace*2)
+
+ # Set it to 0
+ self.fs.mon_manager.raw_cluster_cmd('fs', 'set', self.fs.name, 'standby_count_wanted', '0')
+ self.wait_for_health_clear(timeout=30)
+
+
+
+
+class TestStandbyReplay(CephFSTestCase):
+ MDSS_REQUIRED = 4
+ REQUIRE_FILESYSTEM = False
+
+ def set_standby_for(self, leader, follower, replay):
+ self.set_conf("mds.{0}".format(follower), "mds_standby_for_name", leader)
+ if replay:
+ self.set_conf("mds.{0}".format(follower), "mds_standby_replay", "true")
+
+ def get_info_by_name(self, mds_name):
+ status = self.mds_cluster.status()
+ info = status.get_mds(mds_name)
+ if info is None:
+ log.warn(str(status))
+ raise RuntimeError("MDS '{0}' not found".format(mds_name))
+ else:
+ return info
+
+ def test_standby_replay_unused(self):
+ # Pick out exactly 3 daemons to be run during test
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:3])
+ mds_a, mds_b, mds_c = use_daemons
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ # B and C should both follow A, but only one will
+ # really get into standby replay state.
+ self.set_standby_for(mds_a, mds_b, True)
+ self.set_standby_for(mds_a, mds_c, True)
+
+ # Create FS and start A
+ fs_a = self.mds_cluster.newfs("alpha")
+ self.mds_cluster.mds_restart(mds_a)
+ fs_a.wait_for_daemons()
+ self.assertEqual(fs_a.get_active_names(), [mds_a])
+
+ # Start B, he should go into standby replay
+ self.mds_cluster.mds_restart(mds_b)
+ self.wait_for_daemon_start([mds_b])
+ info_b = self.get_info_by_name(mds_b)
+ self.assertEqual(info_b['state'], "up:standby-replay")
+ self.assertEqual(info_b['standby_for_name'], mds_a)
+ self.assertEqual(info_b['rank'], 0)
+
+ # Start C, he should go into standby (*not* replay)
+ self.mds_cluster.mds_restart(mds_c)
+ self.wait_for_daemon_start([mds_c])
+ info_c = self.get_info_by_name(mds_c)
+ self.assertEqual(info_c['state'], "up:standby")
+ self.assertEqual(info_c['standby_for_name'], mds_a)
+ self.assertEqual(info_c['rank'], -1)
+
+ # Kill B, C should go into standby replay
+ self.mds_cluster.mds_stop(mds_b)
+ self.mds_cluster.mds_fail(mds_b)
+ self.wait_until_equal(
+ lambda: self.get_info_by_name(mds_c)['state'],
+ "up:standby-replay",
+ 60)
+ info_c = self.get_info_by_name(mds_c)
+ self.assertEqual(info_c['state'], "up:standby-replay")
+ self.assertEqual(info_c['standby_for_name'], mds_a)
+ self.assertEqual(info_c['rank'], 0)
+
+ def test_standby_failure(self):
+ """
+ That the failure of a standby-replay daemon happens cleanly
+ and doesn't interrupt anything else.
+ """
+ # Pick out exactly 2 daemons to be run during test
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:2])
+ mds_a, mds_b = use_daemons
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ # Configure two pairs of MDSs that are standby for each other
+ self.set_standby_for(mds_a, mds_b, True)
+ self.set_standby_for(mds_b, mds_a, False)
+
+ # Create FS alpha and get mds_a to come up as active
+ fs_a = self.mds_cluster.newfs("alpha")
+ self.mds_cluster.mds_restart(mds_a)
+ fs_a.wait_for_daemons()
+ self.assertEqual(fs_a.get_active_names(), [mds_a])
+
+ # Start the standbys
+ self.mds_cluster.mds_restart(mds_b)
+ self.wait_for_daemon_start([mds_b])
+
+ # See the standby come up as the correct rank
+ info_b = self.get_info_by_name(mds_b)
+ self.assertEqual(info_b['state'], "up:standby-replay")
+ self.assertEqual(info_b['standby_for_name'], mds_a)
+ self.assertEqual(info_b['rank'], 0)
+
+ # Kill the standby
+ self.mds_cluster.mds_stop(mds_b)
+ self.mds_cluster.mds_fail(mds_b)
+
+ # See that the standby is gone and the active remains
+ self.assertEqual(fs_a.get_active_names(), [mds_a])
+ mds_map = fs_a.get_mds_map()
+ self.assertEqual(len(mds_map['info']), 1)
+ self.assertEqual(mds_map['failed'], [])
+ self.assertEqual(mds_map['damaged'], [])
+ self.assertEqual(mds_map['stopped'], [])
+
+ def test_rank_stopped(self):
+ """
+ That when a rank is STOPPED, standby replays for
+ that rank get torn down
+ """
+ # Pick out exactly 2 daemons to be run during test
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:4])
+ mds_a, mds_b, mds_a_s, mds_b_s = use_daemons
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ # a and b both get a standby
+ self.set_standby_for(mds_a, mds_a_s, True)
+ self.set_standby_for(mds_b, mds_b_s, True)
+
+ # Create FS alpha and get mds_a to come up as active
+ fs_a = self.mds_cluster.newfs("alpha")
+ fs_a.set_max_mds(2)
+
+ self.mds_cluster.mds_restart(mds_a)
+ self.wait_until_equal(lambda: fs_a.get_active_names(), [mds_a], 30)
+ self.mds_cluster.mds_restart(mds_b)
+ fs_a.wait_for_daemons()
+ self.assertEqual(sorted(fs_a.get_active_names()), [mds_a, mds_b])
+
+ # Start the standbys
+ self.mds_cluster.mds_restart(mds_b_s)
+ self.wait_for_daemon_start([mds_b_s])
+ self.mds_cluster.mds_restart(mds_a_s)
+ self.wait_for_daemon_start([mds_a_s])
+ info_b_s = self.get_info_by_name(mds_b_s)
+ self.assertEqual(info_b_s['state'], "up:standby-replay")
+ info_a_s = self.get_info_by_name(mds_a_s)
+ self.assertEqual(info_a_s['state'], "up:standby-replay")
+
+ # Shrink the cluster
+ fs_a.set_max_mds(1)
+ fs_a.mon_manager.raw_cluster_cmd("mds", "stop", "{0}:1".format(fs_a.name))
+ self.wait_until_equal(
+ lambda: fs_a.get_active_names(), [mds_a],
+ 60
+ )
+
+ # Both 'b' and 'b_s' should go back to being standbys
+ self.wait_until_equal(
+ lambda: self.mds_cluster.get_standby_daemons(), {mds_b, mds_b_s},
+ 60
+ )
+
+
+class TestMultiFilesystems(CephFSTestCase):
+ CLIENTS_REQUIRED = 2
+ MDSS_REQUIRED = 4
+
+ # We'll create our own filesystems and start our own daemons
+ REQUIRE_FILESYSTEM = False
+
+ def setUp(self):
+ super(TestMultiFilesystems, self).setUp()
+ self.mds_cluster.mon_manager.raw_cluster_cmd("fs", "flag", "set",
+ "enable_multiple", "true",
+ "--yes-i-really-mean-it")
+
+ def _setup_two(self):
+ fs_a = self.mds_cluster.newfs("alpha")
+ fs_b = self.mds_cluster.newfs("bravo")
+
+ self.mds_cluster.mds_restart()
+
+ # Wait for both filesystems to go healthy
+ fs_a.wait_for_daemons()
+ fs_b.wait_for_daemons()
+
+ # Reconfigure client auth caps
+ for mount in self.mounts:
+ self.mds_cluster.mon_manager.raw_cluster_cmd_result(
+ 'auth', 'caps', "client.{0}".format(mount.client_id),
+ 'mds', 'allow',
+ 'mon', 'allow r',
+ 'osd', 'allow rw pool={0}, allow rw pool={1}'.format(
+ fs_a.get_data_pool_name(), fs_b.get_data_pool_name()))
+
+ return fs_a, fs_b
+
+ def test_clients(self):
+ fs_a, fs_b = self._setup_two()
+
+ # Mount a client on fs_a
+ self.mount_a.mount(mount_fs_name=fs_a.name)
+ self.mount_a.write_n_mb("pad.bin", 1)
+ self.mount_a.write_n_mb("test.bin", 2)
+ a_created_ino = self.mount_a.path_to_ino("test.bin")
+ self.mount_a.create_files()
+
+ # Mount a client on fs_b
+ self.mount_b.mount(mount_fs_name=fs_b.name)
+ self.mount_b.write_n_mb("test.bin", 1)
+ b_created_ino = self.mount_b.path_to_ino("test.bin")
+ self.mount_b.create_files()
+
+ # Check that a non-default filesystem mount survives an MDS
+ # failover (i.e. that map subscription is continuous, not
+ # just the first time), reproduces #16022
+ old_fs_b_mds = fs_b.get_active_names()[0]
+ self.mds_cluster.mds_stop(old_fs_b_mds)
+ self.mds_cluster.mds_fail(old_fs_b_mds)
+ fs_b.wait_for_daemons()
+ background = self.mount_b.write_background()
+ # Raise exception if the write doesn't finish (i.e. if client
+ # has not kept up with MDS failure)
+ try:
+ self.wait_until_true(lambda: background.finished, timeout=30)
+ except RuntimeError:
+ # The mount is stuck, we'll have to force it to fail cleanly
+ background.stdin.close()
+ self.mount_b.umount_wait(force=True)
+ raise
+
+ self.mount_a.umount_wait()
+ self.mount_b.umount_wait()
+
+ # See that the client's files went into the correct pool
+ self.assertTrue(fs_a.data_objects_present(a_created_ino, 1024 * 1024))
+ self.assertTrue(fs_b.data_objects_present(b_created_ino, 1024 * 1024))
+
+ def test_standby(self):
+ fs_a, fs_b = self._setup_two()
+
+ # Assert that the remaining two MDS daemons are now standbys
+ a_daemons = fs_a.get_active_names()
+ b_daemons = fs_b.get_active_names()
+ self.assertEqual(len(a_daemons), 1)
+ self.assertEqual(len(b_daemons), 1)
+ original_a = a_daemons[0]
+ original_b = b_daemons[0]
+ expect_standby_daemons = set(self.mds_cluster.mds_ids) - (set(a_daemons) | set(b_daemons))
+
+ # Need all my standbys up as well as the active daemons
+ self.wait_for_daemon_start()
+ self.assertEqual(expect_standby_daemons, self.mds_cluster.get_standby_daemons())
+
+ # Kill fs_a's active MDS, see a standby take over
+ self.mds_cluster.mds_stop(original_a)
+ self.mds_cluster.mon_manager.raw_cluster_cmd("mds", "fail", original_a)
+ self.wait_until_equal(lambda: len(fs_a.get_active_names()), 1, 30,
+ reject_fn=lambda v: v > 1)
+ # Assert that it's a *different* daemon that has now appeared in the map for fs_a
+ self.assertNotEqual(fs_a.get_active_names()[0], original_a)
+
+ # Kill fs_b's active MDS, see a standby take over
+ self.mds_cluster.mds_stop(original_b)
+ self.mds_cluster.mon_manager.raw_cluster_cmd("mds", "fail", original_b)
+ self.wait_until_equal(lambda: len(fs_b.get_active_names()), 1, 30,
+ reject_fn=lambda v: v > 1)
+ # Assert that it's a *different* daemon that has now appeared in the map for fs_a
+ self.assertNotEqual(fs_b.get_active_names()[0], original_b)
+
+ # Both of the original active daemons should be gone, and all standbys used up
+ self.assertEqual(self.mds_cluster.get_standby_daemons(), set())
+
+ # Restart the ones I killed, see them reappear as standbys
+ self.mds_cluster.mds_restart(original_a)
+ self.mds_cluster.mds_restart(original_b)
+ self.wait_until_true(
+ lambda: {original_a, original_b} == self.mds_cluster.get_standby_daemons(),
+ timeout=30
+ )
+
+ def test_grow_shrink(self):
+ # Usual setup...
+ fs_a, fs_b = self._setup_two()
+
+ # Increase max_mds on fs_b, see a standby take up the role
+ fs_b.set_max_mds(2)
+ self.wait_until_equal(lambda: len(fs_b.get_active_names()), 2, 30,
+ reject_fn=lambda v: v > 2 or v < 1)
+
+ # Increase max_mds on fs_a, see a standby take up the role
+ fs_a.set_max_mds(2)
+ self.wait_until_equal(lambda: len(fs_a.get_active_names()), 2, 30,
+ reject_fn=lambda v: v > 2 or v < 1)
+
+ # Shrink fs_b back to 1, see a daemon go back to standby
+ fs_b.set_max_mds(1)
+ fs_b.deactivate(1)
+ self.wait_until_equal(lambda: len(fs_b.get_active_names()), 1, 30,
+ reject_fn=lambda v: v > 2 or v < 1)
+
+ # Grow fs_a up to 3, see the former fs_b daemon join it.
+ fs_a.set_max_mds(3)
+ self.wait_until_equal(lambda: len(fs_a.get_active_names()), 3, 60,
+ reject_fn=lambda v: v > 3 or v < 2)
+
+ def test_standby_for_name(self):
+ # Pick out exactly 4 daemons to be run during test
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:4])
+ mds_a, mds_b, mds_c, mds_d = use_daemons
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ def set_standby_for(leader, follower, replay):
+ self.set_conf("mds.{0}".format(follower), "mds_standby_for_name", leader)
+ if replay:
+ self.set_conf("mds.{0}".format(follower), "mds_standby_replay", "true")
+
+ # Configure two pairs of MDSs that are standby for each other
+ set_standby_for(mds_a, mds_b, True)
+ set_standby_for(mds_b, mds_a, False)
+ set_standby_for(mds_c, mds_d, True)
+ set_standby_for(mds_d, mds_c, False)
+
+ # Create FS alpha and get mds_a to come up as active
+ fs_a = self.mds_cluster.newfs("alpha")
+ self.mds_cluster.mds_restart(mds_a)
+ fs_a.wait_for_daemons()
+ self.assertEqual(fs_a.get_active_names(), [mds_a])
+
+ # Create FS bravo and get mds_c to come up as active
+ fs_b = self.mds_cluster.newfs("bravo")
+ self.mds_cluster.mds_restart(mds_c)
+ fs_b.wait_for_daemons()
+ self.assertEqual(fs_b.get_active_names(), [mds_c])
+
+ # Start the standbys
+ self.mds_cluster.mds_restart(mds_b)
+ self.mds_cluster.mds_restart(mds_d)
+ self.wait_for_daemon_start([mds_b, mds_d])
+
+ def get_info_by_name(fs, mds_name):
+ mds_map = fs.get_mds_map()
+ for gid_str, info in mds_map['info'].items():
+ if info['name'] == mds_name:
+ return info
+
+ log.warn(json.dumps(mds_map, indent=2))
+ raise RuntimeError("MDS '{0}' not found in filesystem MDSMap".format(mds_name))
+
+ # See both standbys come up as standby replay for the correct ranks
+ # mds_b should be in filesystem alpha following mds_a
+ info_b = get_info_by_name(fs_a, mds_b)
+ self.assertEqual(info_b['state'], "up:standby-replay")
+ self.assertEqual(info_b['standby_for_name'], mds_a)
+ self.assertEqual(info_b['rank'], 0)
+ # mds_d should be in filesystem alpha following mds_c
+ info_d = get_info_by_name(fs_b, mds_d)
+ self.assertEqual(info_d['state'], "up:standby-replay")
+ self.assertEqual(info_d['standby_for_name'], mds_c)
+ self.assertEqual(info_d['rank'], 0)
+
+ # Kill both active daemons
+ self.mds_cluster.mds_stop(mds_a)
+ self.mds_cluster.mds_fail(mds_a)
+ self.mds_cluster.mds_stop(mds_c)
+ self.mds_cluster.mds_fail(mds_c)
+
+ # Wait for standbys to take over
+ fs_a.wait_for_daemons()
+ self.assertEqual(fs_a.get_active_names(), [mds_b])
+ fs_b.wait_for_daemons()
+ self.assertEqual(fs_b.get_active_names(), [mds_d])
+
+ # Start the original active daemons up again
+ self.mds_cluster.mds_restart(mds_a)
+ self.mds_cluster.mds_restart(mds_c)
+ self.wait_for_daemon_start([mds_a, mds_c])
+
+ self.assertEqual(set(self.mds_cluster.get_standby_daemons()),
+ {mds_a, mds_c})
+
+ def test_standby_for_rank(self):
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:4])
+ mds_a, mds_b, mds_c, mds_d = use_daemons
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ def set_standby_for(leader_rank, leader_fs, follower_id):
+ self.set_conf("mds.{0}".format(follower_id),
+ "mds_standby_for_rank", leader_rank)
+
+ fscid = leader_fs.get_namespace_id()
+ self.set_conf("mds.{0}".format(follower_id),
+ "mds_standby_for_fscid", fscid)
+
+ fs_a = self.mds_cluster.newfs("alpha")
+ fs_b = self.mds_cluster.newfs("bravo")
+ set_standby_for(0, fs_a, mds_a)
+ set_standby_for(0, fs_a, mds_b)
+ set_standby_for(0, fs_b, mds_c)
+ set_standby_for(0, fs_b, mds_d)
+
+ self.mds_cluster.mds_restart(mds_a)
+ fs_a.wait_for_daemons()
+ self.assertEqual(fs_a.get_active_names(), [mds_a])
+
+ self.mds_cluster.mds_restart(mds_c)
+ fs_b.wait_for_daemons()
+ self.assertEqual(fs_b.get_active_names(), [mds_c])
+
+ self.mds_cluster.mds_restart(mds_b)
+ self.mds_cluster.mds_restart(mds_d)
+ self.wait_for_daemon_start([mds_b, mds_d])
+
+ self.mds_cluster.mds_stop(mds_a)
+ self.mds_cluster.mds_fail(mds_a)
+ self.mds_cluster.mds_stop(mds_c)
+ self.mds_cluster.mds_fail(mds_c)
+
+ fs_a.wait_for_daemons()
+ self.assertEqual(fs_a.get_active_names(), [mds_b])
+ fs_b.wait_for_daemons()
+ self.assertEqual(fs_b.get_active_names(), [mds_d])
+
+ def test_standby_for_fscid(self):
+ """
+ That I can set a standby FSCID with no rank, and the result is
+ that daemons join any rank for that filesystem.
+ """
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:4])
+ mds_a, mds_b, mds_c, mds_d = use_daemons
+
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ def set_standby_for(leader_fs, follower_id):
+ fscid = leader_fs.get_namespace_id()
+ self.set_conf("mds.{0}".format(follower_id),
+ "mds_standby_for_fscid", fscid)
+
+ # Create two filesystems which should have two ranks each
+ fs_a = self.mds_cluster.newfs("alpha")
+
+ fs_b = self.mds_cluster.newfs("bravo")
+
+ fs_a.set_max_mds(2)
+ fs_b.set_max_mds(2)
+
+ # Set all the daemons to have a FSCID assignment but no other
+ # standby preferences.
+ set_standby_for(fs_a, mds_a)
+ set_standby_for(fs_a, mds_b)
+ set_standby_for(fs_b, mds_c)
+ set_standby_for(fs_b, mds_d)
+
+ # Now when we start all daemons at once, they should fall into
+ # ranks in the right filesystem
+ self.mds_cluster.mds_restart(mds_a)
+ self.mds_cluster.mds_restart(mds_b)
+ self.mds_cluster.mds_restart(mds_c)
+ self.mds_cluster.mds_restart(mds_d)
+ self.wait_for_daemon_start([mds_a, mds_b, mds_c, mds_d])
+ fs_a.wait_for_daemons()
+ fs_b.wait_for_daemons()
+ self.assertEqual(set(fs_a.get_active_names()), {mds_a, mds_b})
+ self.assertEqual(set(fs_b.get_active_names()), {mds_c, mds_d})
+
+ def test_standby_for_invalid_fscid(self):
+ """
+ That an invalid standby_fscid does not cause a mon crash
+ """
+ use_daemons = sorted(self.mds_cluster.mds_ids[0:3])
+ mds_a, mds_b, mds_c = use_daemons
+ log.info("Using MDS daemons: {0}".format(use_daemons))
+
+ def set_standby_for_rank(leader_rank, follower_id):
+ self.set_conf("mds.{0}".format(follower_id),
+ "mds_standby_for_rank", leader_rank)
+
+ # Create one fs
+ fs_a = self.mds_cluster.newfs("cephfs")
+
+ # Get configured mons in the cluster, so we can see if any
+ # crashed later.
+ configured_mons = fs_a.mon_manager.get_mon_quorum()
+
+ # Set all the daemons to have a rank assignment but no other
+ # standby preferences.
+ set_standby_for_rank(0, mds_a)
+ set_standby_for_rank(0, mds_b)
+
+ # Set third daemon to have invalid fscid assignment and no other
+ # standby preferences
+ invalid_fscid = 123
+ self.set_conf("mds.{0}".format(mds_c), "mds_standby_for_fscid", invalid_fscid)
+
+ #Restart all the daemons to make the standby preference applied
+ self.mds_cluster.mds_restart(mds_a)
+ self.mds_cluster.mds_restart(mds_b)
+ self.mds_cluster.mds_restart(mds_c)
+ self.wait_for_daemon_start([mds_a, mds_b, mds_c])
+
+ #Stop active mds daemon service of fs
+ if (fs_a.get_active_names(), [mds_a]):
+ self.mds_cluster.mds_stop(mds_a)
+ self.mds_cluster.mds_fail(mds_a)
+ fs_a.wait_for_daemons()
+ else:
+ self.mds_cluster.mds_stop(mds_b)
+ self.mds_cluster.mds_fail(mds_b)
+ fs_a.wait_for_daemons()
+
+ #Get active mons from cluster
+ active_mons = fs_a.mon_manager.get_mon_quorum()
+
+ #Check for active quorum mon status and configured mon status
+ self.assertEqual(active_mons, configured_mons,
+ "Not all mons are in quorum Invalid standby invalid fscid test failed!")
Code Review / stor4nfv.git / blobdiff