diff options
Diffstat (limited to 'tests/functional/afr/heal/test_self_heal_daemon_process.py')
| -rw-r--r-- | tests/functional/afr/heal/test_self_heal_daemon_process.py | 645 |
1 files changed, 645 insertions, 0 deletions
diff --git a/tests/functional/afr/heal/test_self_heal_daemon_process.py b/tests/functional/afr/heal/test_self_heal_daemon_process.py new file mode 100644 index 000000000..3412c1b49 --- /dev/null +++ b/tests/functional/afr/heal/test_self_heal_daemon_process.py @@ -0,0 +1,645 @@ +# Copyright (C) 2016-2017 Red Hat, Inc. <http://www.redhat.com> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# any later version. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +""" Description: + Test Cases in this module tests the self heal daemon process. +""" + +from glusto.core import Glusto as g +from glustolibs.gluster.exceptions import ExecutionError +from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on +from glustolibs.gluster.volume_libs import ( + expand_volume, shrink_volume, log_volume_info_and_status, + wait_for_volume_process_to_be_online) +from glustolibs.gluster.rebalance_ops import (rebalance_start, + wait_for_rebalance_to_complete, + rebalance_status) +from glustolibs.gluster.brick_libs import (get_all_bricks, + bring_bricks_offline, + bring_bricks_online, + are_bricks_online, + select_bricks_to_bring_offline) +from glustolibs.gluster.brick_ops import replace_brick +from glustolibs.gluster.heal_libs import (get_self_heal_daemon_pid, + do_bricks_exist_in_shd_volfile, + is_shd_daemonized, + are_all_self_heal_daemons_are_online) +from glustolibs.gluster.volume_ops import (volume_stop, volume_start) +from glustolibs.gluster.gluster_init import restart_glusterd + + +@runs_on([['replicated', 'distributed-replicated', 'dispersed', + 'distributed-dispersed'], ['glusterfs', 'nfs', 'cifs']]) +class SelfHealDaemonProcessTests(GlusterBaseClass): + """ + SelfHealDaemonProcessTests contains tests which verifies the + self-heal daemon process of the nodes + """ + def setUp(self): + """ + setup volume, mount volume and initialize necessary variables + which is used in tests + """ + + # calling GlusterBaseClass setUpClass + GlusterBaseClass.setUp.im_func(self) + + # Setup Volume and Mount Volume + g.log.info("Starting to Setup Volume and Mount Volume") + ret = self.setup_volume_and_mount_volume(mounts=self.mounts) + if not ret: + raise ExecutionError("Failed to Setup_Volume and Mount_Volume") + g.log.info("Successful in Setup Volume and Mount Volume") + + # Verfiy glustershd process releases its parent process + ret = is_shd_daemonized(self.servers) + if not ret: + raise ExecutionError("Self Heal Daemon process was still" + " holding parent process.") + g.log.info("Self Heal Daemon processes are online") + + self.glustershd = "/var/lib/glusterd/glustershd/glustershd-server.vol" + + def tearDown(self): + """ + Clean up the volume and umount volume from client + """ + + # stopping the volume + g.log.info("Starting to Unmount Volume and Cleanup Volume") + ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts) + if not ret: + raise ExecutionError("Failed to Unmount Volume and Cleanup Volume") + g.log.info("Successful in Unmount Volume and Cleanup Volume") + + # calling GlusterBaseClass tearDownClass + GlusterBaseClass.tearDown.im_func(self) + + def test_glustershd_with_add_remove_brick(self): + """ + Test script to verify glustershd process with adding and + removing bricks + + * check glustershd process - only 1 glustershd process should + be running + * bricks must be present in glustershd-server.vol file for + the replicated involved volumes + * Add bricks + * check glustershd process - only 1 glustershd process should + be running and its should be different from previous one + * bricks which are added must present in glustershd-server.vol file + * remove bricks + * check glustershd process - only 1 glustershd process should + be running and its different from previous one + * bricks which are removed should not present + in glustershd-server.vol file + + """ + # pylint: disable=too-many-statements + nodes = self.volume['servers'] + bricks_list = [] + glustershd_pids = {} + + # check the self-heal daemon process + g.log.info("Starting to get self-heal daemon process on " + "nodes %s", nodes) + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process " + "found : %s", pids)) + g.log.info("Successful in getting Single self heal daemon process" + " on all nodes %s", nodes) + glustershd_pids = pids + + # get the bricks for the volume + g.log.info("Fetching bricks for the volume : %s", self.volname) + bricks_list = get_all_bricks(self.mnode, self.volname) + g.log.info("Brick List : %s", bricks_list) + + # validate the bricks present in volume info with + # glustershd server volume file + g.log.info("Starting parsing file %s on " + "node %s", self.glustershd, self.mnode) + ret = do_bricks_exist_in_shd_volfile(self.mnode, self.volname, + bricks_list) + self.assertTrue(ret, ("Brick List from volume info is different " + "from glustershd server volume file. " + "Please check log file for details")) + g.log.info("Successfully parsed %s file", self.glustershd) + + # expanding volume + g.log.info("Start adding bricks to volume %s", self.volname) + ret = expand_volume(self.mnode, self.volname, self.servers, + self.all_servers_info) + self.assertTrue(ret, ("Failed to add bricks to " + "volume %s " % self.volname)) + g.log.info("Add brick successfull") + + # Log Volume Info and Status after expanding the volume + g.log.info("Logging volume info and Status after expanding volume") + ret = log_volume_info_and_status(self.mnode, self.volname) + self.assertTrue(ret, ("Logging volume info and status failed " + "on volume %s", self.volname)) + g.log.info("Successful in logging volume info and status " + "of volume %s", self.volname) + + # Verify volume's all process are online for 60 sec + g.log.info("Verifying volume's all process are online") + ret = wait_for_volume_process_to_be_online(self.mnode, self.volname, + 60) + self.assertTrue(ret, ("Volume %s : All process are not " + "online", self.volname)) + g.log.info("Successfully Verified volume %s processes are online", + self.volname) + + # Start Rebalance + g.log.info("Starting Rebalance on the volume") + ret, _, err = rebalance_start(self.mnode, self.volname) + self.assertEqual(ret, 0, ("Failed to start rebalance on " + "the volume %s with error %s" % + (self.volname, err))) + g.log.info("Successfully started rebalance on the " + "volume %s", self.volname) + + # Log Rebalance status + g.log.info("Log Rebalance status") + _, _, _ = rebalance_status(self.mnode, self.volname) + + # Wait for rebalance to complete + g.log.info("Waiting for rebalance to complete") + ret = wait_for_rebalance_to_complete(self.mnode, self.volname) + self.assertTrue(ret, ("Rebalance is not yet complete " + "on the volume %s", self.volname)) + g.log.info("Rebalance is successfully complete on " + "the volume %s", self.volname) + + # Check Rebalance status after rebalance is complete + g.log.info("Checking Rebalance status") + ret, _, _ = rebalance_status(self.mnode, self.volname) + self.assertEqual(ret, 0, ("Failed to get rebalance status for " + "the volume %s", self.volname)) + g.log.info("Successfully got rebalance status of the " + "volume %s", self.volname) + + # Check the self-heal daemon process after adding bricks + g.log.info("Starting to get self-heal daemon process on " + "nodes %s", nodes) + glustershd_pids_after_expanding = {} + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + g.log.info("Successfull in getting self-heal daemon process " + "on nodes %s", nodes) + + glustershd_pids_after_expanding = pids + g.log.info("Self Heal Daemon Process ID's afetr expanding " + "volume: %s", glustershd_pids_after_expanding) + + self.assertNotEqual(glustershd_pids, + glustershd_pids_after_expanding, + "Self Daemon process is same before and" + " after adding bricks") + g.log.info("Self Heal Daemon Process is different before and " + "after adding bricks") + + # get the bricks for the volume after expanding + bricks_list_after_expanding = get_all_bricks(self.mnode, self.volname) + g.log.info("Brick List after expanding " + "volume: %s", bricks_list_after_expanding) + + # validate the bricks present in volume info + # with glustershd server volume file after adding bricks + g.log.info("Starting parsing file %s", self.glustershd) + ret = do_bricks_exist_in_shd_volfile(self.mnode, self.volname, + bricks_list_after_expanding) + + self.assertTrue(ret, ("Brick List from volume info is different " + "from glustershd server volume file after " + "expanding bricks. Please check log file " + "for details")) + g.log.info("Successfully parsed %s file", self.glustershd) + + # shrink the volume + g.log.info("Starting volume shrink") + ret = shrink_volume(self.mnode, self.volname) + self.assertTrue(ret, ("Failed to shrink the volume on " + "volume %s", self.volname)) + g.log.info("Shrinking volume is successful on " + "volume %s", self.volname) + + # Log Volume Info and Status after shrinking the volume + g.log.info("Logging volume info and Status after shrinking volume") + ret = log_volume_info_and_status(self.mnode, self.volname) + self.assertTrue(ret, ("Logging volume info and status failed on " + "volume %s", self.volname)) + g.log.info("Successful in logging volume info and status " + "of volume %s", self.volname) + + # get the bricks after shrinking the volume + bricks_list_after_shrinking = get_all_bricks(self.mnode, self.volname) + g.log.info("Brick List after shrinking " + "volume: %s", bricks_list_after_shrinking) + + self.assertEqual(len(bricks_list_after_shrinking), len(bricks_list), + "Brick Count is mismatched after " + "shrinking the volume %s" % self.volname) + g.log.info("Brick Count matched before before expanding " + "and after shrinking volume") + + # Verfiy glustershd process releases its parent process + ret = is_shd_daemonized(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + + # check the self-heal daemon process after removing bricks + g.log.info("Starting to get self-heal daemon process " + "on nodes %s", nodes) + glustershd_pids_after_shrinking = {} + ret, pids = get_self_heal_daemon_pid(nodes) + glustershd_pids_after_shrinking = pids + self.assertNotEqual(glustershd_pids_after_expanding, + glustershd_pids_after_shrinking, + "Self Heal Daemon process is same " + "after adding bricks and shrinking volume") + g.log.info("Self Heal Daemon Process is different after adding bricks " + "and shrinking volume") + + # validate bricks present in volume info + # with glustershd server volume file after removing bricks + g.log.info("Starting parsing file %s", self.glustershd) + ret = do_bricks_exist_in_shd_volfile(self.mnode, self.volname, + bricks_list_after_shrinking) + self.assertTrue(ret, ("Brick List from volume info is different " + "from glustershd server volume file after " + "removing bricks. Please check log file " + "for details")) + g.log.info("Successfully parsed %s file", self.glustershd) + + def test_glustershd_with_restarting_glusterd(self): + """ + Test Script to verify the self heal daemon process with restarting + glusterd and rebooting the server + + * stop all volumes + * restart glusterd - should not run self heal daemon process + * start replicated involved volumes + * single self heal daemon process running + * restart glusterd + * self heal daemon pid will change + * bring down brick and restart glusterd + * self heal daemon pid will change and its different from previous + * brought up the brick + + """ + # pylint: disable=too-many-statements + nodes = self.volume['servers'] + + # stop the volume + g.log.info("Stopping the volume %s", self.volname) + ret = volume_stop(self.mnode, self.volname) + self.assertTrue(ret, ("Failed to stop volume %s" % self.volname)) + g.log.info("Successfully stopped volume %s", self.volname) + + # check the self heal daemon process after stopping the volume + g.log.info("Verifying the self heal daemon process for " + "volume %s", self.volname) + ret = are_all_self_heal_daemons_are_online(self.mnode, self.volname) + self.assertFalse(ret, ("Self Heal Daemon process is still running " + "even after stopping volume %s" % self.volname)) + g.log.info("Self Heal Daemon is not running after stopping " + "volume %s", self.volname) + + # restart glusterd service on all the servers + g.log.info("Restarting glusterd on all servers %s", nodes) + ret = restart_glusterd(nodes) + self.assertTrue(ret, ("Failed to restart glusterd on all nodes %s", + nodes)) + g.log.info("Successfully restarted glusterd on all nodes %s", + nodes) + + # check the self heal daemon process after restarting glusterd process + g.log.info("Starting to get self-heal daemon process on" + " nodes %s", nodes) + ret = are_all_self_heal_daemons_are_online(self.mnode, self.volname) + self.assertFalse(ret, ("Self Heal Daemon process is running after " + "glusterd restart with volume %s in " + "stop state" % self.volname)) + g.log.info("Self Heal Daemon is not running after stopping " + "volume and restarting glusterd %s", self.volname) + + # start the volume + g.log.info("Starting the volume %s", self.volname) + ret = volume_start(self.mnode, self.volname) + self.assertTrue(ret, ("Failed to start volume %s" % self.volname)) + g.log.info("Volume %s started successfully", self.volname) + + # Verfiy glustershd process releases its parent process + g.log.info("Checking whether glustershd process is daemonized or not") + ret = is_shd_daemonized(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + g.log.info("Single self heal daemon process on all nodes %s", nodes) + + # get the self heal daemon pids after starting volume + g.log.info("Starting to get self-heal daemon process " + "on nodes %s", nodes) + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + g.log.info("Succesfull in getting self heal daemon pids") + glustershd_pids = pids + + # get the bricks for the volume + g.log.info("Fetching bricks for the volume : %s", self.volname) + bricks_list = get_all_bricks(self.mnode, self.volname) + g.log.info("Brick List : %s", bricks_list) + + # validate the bricks present in volume info + # with glustershd server volume file + g.log.info("Starting parsing file %s on " + "node %s", self.glustershd, self.mnode) + ret = do_bricks_exist_in_shd_volfile(self.mnode, self.volname, + bricks_list) + self.assertTrue(ret, ("Brick List from volume info is different from " + "glustershd server volume file. " + "Please check log file for details.")) + g.log.info("Successfully parsed %s file", self.glustershd) + + # restart glusterd service on all the servers + g.log.info("Restarting glusterd on all servers %s", nodes) + ret = restart_glusterd(nodes) + self.assertTrue(ret, ("Failed to restart glusterd on all nodes %s", + nodes)) + g.log.info("Successfully restarted glusterd on all nodes %s", + nodes) + + # Verify volume's all process are online for 60 sec + g.log.info("Verifying volume's all process are online") + ret = wait_for_volume_process_to_be_online(self.mnode, self.volname, + 60) + self.assertTrue(ret, ("Volume %s : All process are not " + "online", self.volname)) + g.log.info("Successfully Verified volume %s processes are online", + self.volname) + + # Verfiy glustershd process releases its parent process + ret = is_shd_daemonized(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + + # check the self heal daemon process after starting volume and + # restarting glusterd process + g.log.info("Starting to get self-heal daemon process " + "on nodes %s", nodes) + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + glustershd_pids_after_glusterd_restart = pids + + self.assertNotEqual(glustershd_pids, + glustershd_pids_after_glusterd_restart, + ("Self Heal Daemon pids are same after " + "restarting glusterd process")) + g.log.info("Self Heal Daemon process are different before and " + "after restarting glusterd process") + + # select bricks to bring offline + bricks_to_bring_offline_dict = (select_bricks_to_bring_offline( + self.mnode, self.volname)) + bricks_to_bring_offline = filter(None, ( + bricks_to_bring_offline_dict['hot_tier_bricks'] + + bricks_to_bring_offline_dict['cold_tier_bricks'] + + bricks_to_bring_offline_dict['volume_bricks'])) + + # bring bricks offline + g.log.info("Going to bring down the brick process " + "for %s", bricks_to_bring_offline) + ret = bring_bricks_offline(self.volname, bricks_to_bring_offline) + self.assertTrue(ret, ("Failed to bring down the bricks. Please " + "check the log file for more details.")) + g.log.info("Brought down the brick process " + "for %s succesfully", bricks_to_bring_offline) + + # restart glusterd after brought down the brick + g.log.info("Restart glusterd on all servers %s", nodes) + ret = restart_glusterd(nodes) + self.assertTrue(ret, ("Failed to restart glusterd on all nodes %s", + nodes)) + g.log.info("Successfully restarted glusterd on all nodes %s", + nodes) + + # Verify volume's all process are online for 60 sec + g.log.info("Verifying volume's all process are online") + ret = wait_for_volume_process_to_be_online(self.mnode, self.volname, + 60) + self.assertTrue(ret, ("Volume %s : All process are not " + "online", self.volname)) + g.log.info("Successfully Verified volume %s processes are online", + self.volname) + + # Verfiy glustershd process releases its parent process + ret = is_shd_daemonized(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + + # check the self heal daemon process after killing brick and + # restarting glusterd process + g.log.info("Starting to get self-heal daemon process " + "on nodes %s", nodes) + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + glustershd_pids_after_killing_brick = pids + + self.assertNotEqual(glustershd_pids_after_glusterd_restart, + glustershd_pids_after_killing_brick, + ("Self Heal Daemon process are same from before " + "killing the brick,restarting glusterd process")) + g.log.info("Self Heal Daemon process are different after killing the " + "brick, restarting the glusterd process") + + # brought the brick online + g.log.info("bringing up the bricks : %s online", + bricks_to_bring_offline) + ret = bring_bricks_online(self.mnode, self.volname, + bricks_to_bring_offline) + self.assertTrue(ret, ("Failed to brought the bricks online")) + g.log.info("Successfully brought the bricks online") + + # check all bricks are online + g.log.info("Verifying all bricka are online or not.....") + ret = are_bricks_online(self.mnode, self.volname, + bricks_to_bring_offline) + self.assertTrue(ret, ("Not all bricks are online")) + g.log.info("All bricks are online.") + + +@runs_on([['replicated', 'distributed-replicated'], + ['glusterfs', 'nfs', 'cifs']]) +class ImpactOfReplaceBrickForGlustershdTests(GlusterBaseClass): + """ + ClientSideQuorumTests contains tests which verifies the + client side quorum Test Cases + """ + + @classmethod + def setUpClass(cls): + # Calling GlusterBaseClass setUpClass + GlusterBaseClass.setUpClass.im_func(cls) + + # Override Volumes + if cls.volume_type == "distributed-replicated": + # Define distributed-replicated volume + cls.volume['voltype'] = { + 'type': 'distributed-replicated', + 'dist_count': 2, + 'replica_count': 3, + 'arbiter_count': 1, + 'transport': 'tcp'} + + cls.glustershd = "/var/lib/glusterd/glustershd/glustershd-server.vol" + + def setUp(self): + """ + setUp method for every test + """ + + # calling GlusterBaseClass setUp + GlusterBaseClass.setUp.im_func(self) + + self.all_mounts_procs = [] + self.io_validation_complete = False + + # Setup Volume and Mount Volume + g.log.info("Starting to Setup Volume %s", self.volname) + ret = self.setup_volume_and_mount_volume(self.mounts, + volume_create_force=False) + if not ret: + raise ExecutionError("Failed to Setup_Volume and Mount_Volume") + g.log.info("Successful in Setup Volume and Mount Volume") + + def tearDown(self): + """ + If test method failed before validating IO, tearDown waits for the + IO's to complete and checks for the IO exit status + + Cleanup and umount volume + """ + # Cleanup and umount volume + g.log.info("Starting to Unmount Volume and Cleanup Volume") + ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts) + if not ret: + raise ExecutionError("Failed to umount the vol & cleanup Volume") + g.log.info("Successful in umounting the volume and Cleanup") + + # Calling GlusterBaseClass teardown + GlusterBaseClass.tearDown.im_func(self) + + def test_impact_of_replace_brick_for_glustershd(self): + nodes = self.volume['servers'] + + # check the self-heal daemon process + g.log.info("Starting to get self-heal daemon process on " + "nodes %s", nodes) + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process " + "found : %s" % pids)) + g.log.info("Successful in getting Single self heal daemon process" + " on all nodes %s", nodes) + glustershd_pids = pids + + # get the bricks for the volume + g.log.info("Fetching bricks for the volume : %s", self.volname) + bricks_list = get_all_bricks(self.mnode, self.volname) + g.log.info("Brick List : %s", bricks_list) + + # validate the bricks present in volume info with + # glustershd server volume file + g.log.info("Starting parsing file %s on " + "node %s", self.glustershd, self.mnode) + ret = do_bricks_exist_in_shd_volfile(self.mnode, self.volname, + bricks_list) + self.assertTrue(ret, ("Brick List from volume info is different " + "from glustershd server volume file. " + "Please check log file for details")) + g.log.info("Successfully parsed %s file", self.glustershd) + + # replace brick + brick_to_replace = bricks_list[-1] + new_brick = brick_to_replace + 'new' + g.log.info("Replacing the brick %s for the volume : %s", + brick_to_replace, self.volname) + ret, _, err = replace_brick(self.mnode, self.volname, + brick_to_replace, new_brick) + self.assertFalse(ret, err) + g.log.info('Replaced brick %s to %s successfully', + brick_to_replace, new_brick) + + # check bricks + bricks_list = get_all_bricks(self.mnode, self.volname) + self.assertEqual(bricks_list[-1], new_brick, 'Replaced brick and ' + 'new brick are not equal') + + # Verify volume's all process are online for 60 sec + g.log.info("Verifying volume's all process are online") + ret = wait_for_volume_process_to_be_online(self.mnode, self.volname, + timeout=60) + self.assertTrue(ret, ("Volume %s : All process are not " + "online", self.volname)) + g.log.info("Successfully Verified volume %s processes are online", + self.volname) + + # Verify glustershd process releases its parent process + ret = is_shd_daemonized(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process found")) + + # check the self-heal daemon process + g.log.info("Starting to get self-heal daemon process on " + "nodes %s", nodes) + ret, pids = get_self_heal_daemon_pid(nodes) + self.assertTrue(ret, ("Either No self heal daemon process found or " + "more than One self heal daemon process " + "found : %s" % pids)) + g.log.info("Successful in getting Single self heal daemon process" + " on all nodes %s", nodes) + glustershd_pids_after_replacement = pids + + # Compare pids before and after replacing + self.assertNotEqual(glustershd_pids, + glustershd_pids_after_replacement, + "Self Daemon process is same before and" + " after replacing bricks") + g.log.info("Self Heal Daemon Process is different before and " + "after replacing bricks") + + # get the bricks for the volume after replacing + bricks_list_after_replacing = get_all_bricks(self.mnode, self.volname) + g.log.info("Brick List after expanding " + "volume: %s", bricks_list_after_replacing) + + # validate the bricks present in volume info + # with glustershd server volume file after replacing bricks + g.log.info("Starting parsing file %s", self.glustershd) + ret = do_bricks_exist_in_shd_volfile(self.mnode, self.volname, + bricks_list_after_replacing) + + self.assertTrue(ret, ("Brick List from volume info is different " + "from glustershd server volume file after " + "replacing bricks. Please check log file " + "for details")) + g.log.info("Successfully parsed %s file", self.glustershd) |