[Test] Add tc to check vol set when glusterd is stopped on one node

Test Steps:
1) Setup and mount a volume on client.
2) Stop glusterd on a random server.
3) Start IO on mount points
4) Set an option on the volume
5) Start glusterd on the stopped node.
6) Verify all the bricks are online after starting glusterd.
7) Check if the volume info is synced across the cluster.

Change-Id: Ia2982ce4e26f0d690eb2bc7516d463d2a71cce86
Signed-off-by: nik-redhat <nladha@redhat.com>

1 files changed, 193 insertions, 0 deletions

diff --git a/tests/functional/glusterd/test_volume_set_when_glusterd_stopped_on_one_node.py b/tests/functional/glusterd/test_volume_set_when_glusterd_stopped_on_one_node.py
new file mode 100644
index 000000000..d99fa185f
--- /dev/null
+++ b/tests/functional/glusterd/test_volume_set_when_glusterd_stopped_on_one_node.py
@@ -0,0 +1,193 @@
+#  Copyright (C) 2020 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:
+      Volume set operation when glusterd is stopped on one node
+"""
+
+from random import choice
+from time import sleep
+from glusto.core import Glusto as g
+from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
+from glustolibs.gluster.exceptions import ExecutionError
+from glustolibs.gluster.volume_ops import (
+    set_volume_options, get_volume_info)
+from glustolibs.gluster.brick_libs import get_online_bricks_list
+from glustolibs.gluster.gluster_init import (
+    start_glusterd, stop_glusterd, wait_for_glusterd_to_start)
+from glustolibs.misc.misc_libs import upload_scripts
+from glustolibs.io.utils import validate_io_procs
+
+
+@runs_on([['distributed', 'replicated', 'distributed-replicated',
+           'dispersed', 'distributed-dispersed'], ['glusterfs']])
+class TestVolumeSetWhenGlusterdStoppedOnOneNode(GlusterBaseClass):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.get_super_method(cls, 'setUpClass')()
+
+        # Uploading file_dir script in all client direcotries
+        cls.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
+                                  "file_dir_ops.py")
+        ret = upload_scripts(cls.clients, cls.script_upload_path)
+        if not ret:
+            raise ExecutionError("Failed to upload IO scripts to clients %s"
+                                 % cls.clients)
+        g.log.info("Successfully uploaded IO scripts to clients %s",
+                   cls.clients)
+
+    def setUp(self):
+        self.get_super_method(self, 'setUp')()
+        # Creating Volume and mounting volume.
+        ret = self.setup_volume_and_mount_volume(self.mounts)
+        if not ret:
+            raise ExecutionError("Volume creation or mount failed: %s"
+                                 % self.volname)
+        g.log.info("Volme created and mounted successfully : %s",
+                   self.volname)
+
+    def tearDown(self):
+        # Check if a node is still down
+        if self.glusterd_is_stopped:
+            ret = start_glusterd(self.random_server)
+            self.assertTrue(ret, "Failed to start glusterd on %s"
+                            % self.random_server)
+            g.log.info("Successfully started glusterd on node: %s",
+                       self.random_server)
+
+            # Waiting for glusterd to start completely
+            ret = wait_for_glusterd_to_start(self.random_server)
+            self.assertTrue(ret, "glusterd is not running on %s"
+                            % self.random_server)
+            g.log.info("glusterd is started and running on %s",
+                       self.random_server)
+
+        # Unmounting and cleaning volume.
+        ret = self.unmount_volume_and_cleanup_volume(self.mounts)
+        if not ret:
+            raise ExecutionError("Unable to delete volume % s" % self.volname)
+        g.log.info("Volume deleted successfully : %s", self.volname)
+
+        self.get_super_method(self, 'tearDown')()
+
+    def test_volume_set_when_glusterd_stopped_on_one_node(self):
+        """
+        Test Case:
+        1) Setup and mount a volume on client.
+        2) Stop glusterd on a random server.
+        3) Start IO on mount points
+        4) Set an option on the volume
+        5) Start glusterd on the stopped node.
+        6) Verify all the bricks are online after starting glusterd.
+        7) Check if the volume info is synced across the cluster.
+        """
+        # Fetching the bricks list and storing it for later use
+        list1 = get_online_bricks_list(self.mnode, self.volname)
+        self.assertIsNotNone(list1, "Failed to get the list of online bricks "
+                             "for volume: %s" % self.volname)
+
+        # Fetching a random server from list.
+        self.random_server = choice(self.servers[1:])
+
+        # Stopping glusterd on one node.
+        ret = stop_glusterd(self.random_server)
+        self.assertTrue(ret, "Failed to stop glusterd on one node.")
+        g.log.info("Successfully stopped glusterd on one node.")
+
+        self.glusterd_is_stopped = True
+
+        # Start IO on mount points.
+        self.all_mounts_procs = []
+        counter = 1
+        for mount_obj in self.mounts:
+            g.log.info("Starting IO on %s:%s", mount_obj.client_system,
+                       mount_obj.mountpoint)
+            cmd = ("/usr/bin/env python %s create_deep_dirs_with_files "
+                   "--dir-depth 4 "
+                   "--dir-length 6 "
+                   "--dirname-start-num %d "
+                   "--max-num-of-dirs 3 "
+                   "--num-of-files 5 %s" % (
+                       self.script_upload_path,
+                       counter, mount_obj.mountpoint))
+            proc = g.run_async(mount_obj.client_system, cmd,
+                               user=mount_obj.user)
+            self.all_mounts_procs.append(proc)
+            counter += 1
+
+        # Validate IO
+        self.assertTrue(
+            validate_io_procs(self.all_mounts_procs, self.mounts),
+            "IO failed on some of the clients"
+        )
+        g.log.info("IO validation complete.")
+
+        # set a option on volume, stat-prefetch on
+        self.options = {"stat-prefetch": "on"}
+        ret = set_volume_options(self.mnode, self.volname, self.options)
+        self.assertTrue(ret, ("Failed to set option stat-prefetch to on"
+                              "for the volume %s" % self.volname))
+        g.log.info("Succeeded in setting stat-prefetch option to on"
+                   "for the volume %s", self.volname)
+
+        # start glusterd on the node where glusterd is stopped
+        ret = start_glusterd(self.random_server)
+        self.assertTrue(ret, "Failed to start glusterd on %s"
+                        % self.random_server)
+        g.log.info("Successfully started glusterd on node: %s",
+                   self.random_server)
+
+        # Waiting for glusterd to start completely
+        ret = wait_for_glusterd_to_start(self.random_server)
+        self.assertTrue(ret, "glusterd is not running on %s"
+                        % self.random_server)
+        g.log.info("glusterd is started and running on %s", self.random_server)
+
+        self.glusterd_is_stopped = False
+
+        # Confirm if all the bricks are online or not
+        count = 0
+        while count < 10:
+            list2 = get_online_bricks_list(self.mnode, self.volname)
+            if list1 == list2:
+                break
+            sleep(2)
+            count += 1
+
+        self.assertListEqual(list1, list2, "Unexpected: All the bricks in the"
+                             "volume are not online")
+        g.log.info("All the bricks in the volume are back online")
+
+        # volume info should be synced across the cluster
+        out1 = get_volume_info(self.mnode, self.volname)
+        self.assertIsNotNone(out1, "Failed to get the volume info from %s"
+                             % self.mnode)
+        g.log.info("Getting volume info from %s is success", self.mnode)
+
+        count = 0
+        while count < 60:
+            out2 = get_volume_info(self.random_server, self.volname)
+            self.assertIsNotNone(out2, "Failed to get the volume info from %s"
+                                 % self.random_server)
+            if out1 == out2:
+                break
+            sleep(2)
+            count += 1
+
+        self.assertDictEqual(out1, out2, "Volume info is not synced in the"
+                             "restarted node")
+        g.log.info("Volume info is successfully synced across the cluster")