glusterd-test case: volume delete when one of brick node is down

Volume delete operation should fail, when one of the brick node is
down, it is vaildated in this test case.

Change-Id: I17649de2837f4aee8b50a5fcd760eb9f7c88f3cd
Signed-off-by: Sanju Rakonde <srakonde@redhat.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/tests/functional/glusterd/test_volume_delete.py b/tests/functional/glusterd/test_volume_delete.py
new file mode 100644
index 000000000..4aa6dca24
--- /dev/null
+++ b/tests/functional/glusterd/test_volume_delete.py
@@ -0,0 +1,114 @@
+#  Copyright (C) 2017-2018  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.
+
+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 (cleanup_volume, get_volume_list,
+                                            setup_volume)
+from glustolibs.gluster.volume_ops import (volume_stop)
+from glustolibs.gluster.brick_libs import get_all_bricks
+from glustolibs.gluster.gluster_init import stop_glusterd, start_glusterd
+from glustolibs.gluster.peer_ops import peer_probe_servers, is_peer_connected
+import re
+import random
+
+
+@runs_on([['distributed', 'replicated', 'distributed-replicated', 'dispersed',
+           'distributed-dispersed'], ['glusterfs']])
+class TestVolumeDelete(GlusterBaseClass):
+
+    @classmethod
+    def setUpClass(cls):
+
+        # Calling GlusterBaseClass setUpClass
+        GlusterBaseClass.setUpClass.im_func(cls)
+
+        # check whether peers are in connected state
+        ret = cls.validate_peers_are_connected()
+        if not ret:
+            raise ExecutionError("Peers are not in connected state")
+
+    def tearDown(self):
+
+        # start glusterd on all servers
+        ret = start_glusterd(self.servers)
+        if not ret:
+            raise ExecutionError("Failed to start glusterd on all servers")
+
+        for server in self.servers:
+            ret = is_peer_connected(server, self.servers)
+            if not ret:
+                ret = peer_probe_servers(server, self.servers)
+                if not ret:
+                    raise ExecutionError("Failed to peer probe all "
+                                         "the servers")
+
+        # clean up all volumes
+        vol_list = get_volume_list(self.mnode)
+        if vol_list is None:
+            raise ExecutionError("Failed to get the volume list")
+
+        for volume in vol_list:
+            ret = cleanup_volume(self.mnode, volume)
+            if not ret:
+                raise ExecutionError("Unable to delete volume % s" % volume)
+            g.log.info("Volume deleted successfully : %s" % volume)
+
+        GlusterBaseClass.tearDown.im_func(self)
+
+    @classmethod
+    def tearDownClass(cls):
+
+        # Calling GlusterBaseClass tearDown
+        GlusterBaseClass.tearDownClass.im_func(cls)
+
+    def test_vol_delete_when_one_of_nodes_is_down(self):
+
+        # create a volume and start it
+        ret = setup_volume(self.mnode, self.all_servers_info, self.volume)
+        self.assertTrue(ret, "Failed to create and start the volume")
+        g.log.info("Successfully created and started the volume")
+
+        # get the bricks list
+        bricks_list = get_all_bricks(self.mnode, self.volname)
+        self.assertIsNotNone(bricks_list, "Failed to get the bricks list")
+
+        # get a random node other than self.mnode
+        if len(bricks_list) >= len(self.servers):
+            random_index = random.randint(1, len(self.servers) - 1)
+        else:
+            random_index = random.randint(1, len(bricks_list) - 1)
+
+        # stop glusterd on the random node
+
+        node_to_stop_glusterd = self.servers[random_index]
+        ret = stop_glusterd(node_to_stop_glusterd)
+        self.assertTrue(ret, "Failed to stop glusterd")
+
+        # stop the volume, it should succeed
+        ret, _, _ = volume_stop(self.mnode, self.volname)
+        self.assertEqual(ret, 0, "Volume stop failed")
+
+        # try to delete the volume, it should fail
+        ret, out, err = g.run(self.mnode, "gluster volume delete %s "
+                              "--mode=script" % self.volname)
+        self.assertNotEqual(ret, 0, "Volume delete succeeded when one of the"
+                            " brick node is down")
+        if re.search(r'Some of the peers are down', err):
+            g.log.info("Volume delete failed with expected error message")
+        else:
+            g.log.info("Volume delete failed with unexpected error message")