[Test] Test set and reset of storage.reserve limit on glusterd

Steps-
1. Create a volume and start it.
2. Set storage.reserve limit on the created volume and verify
3. Reset storage.reserve limit on the created volume and verify

Change-Id: I6592d19463696ba2c43efbb8f281024fc610d18d
Signed-off-by: srijan-sivakumar <ssivakum@redhat.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/tests/functional/glusterd/test_glusterd_set_reset_reserve_limit.py b/tests/functional/glusterd/test_glusterd_set_reset_reserve_limit.py
new file mode 100644
index 000000000..24b654e62
--- /dev/null
+++ b/tests/functional/glusterd/test_glusterd_set_reset_reserve_limit.py
@@ -0,0 +1,91 @@
+#  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:
+    Test set and reset of storage reserve limit in glusterd
+"""
+
+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_ops import (
+    set_volume_options,
+    reset_volume_option,
+    get_volume_options)
+
+
+@runs_on([['distributed', 'distributed-replicated', 'distributed-arbiter',
+           'distributed-dispersed', 'replicated', 'arbiter', 'dispersed'],
+          ['glusterfs']])
+class TestGlusterDSetResetReserveLimit(GlusterBaseClass):
+    """ Testing set and reset of Reserve limit in GlusterD """
+
+    def setUp(self):
+        """Setup Volume"""
+        # Calling GlusterBaseClass setUp
+        self.get_super_method(self, 'setUp')()
+
+        # Setup and mount the volume
+        ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
+        if not ret:
+            raise ExecutionError("Failed to setup volume and mount it")
+
+    def validate_vol_option(self, option_name, value_expected):
+        """ Function for validating volume options """
+        # Get the volume option.
+        ret = get_volume_options(self.mnode, self.volname, option_name)
+        self.assertIsNotNone(ret, "The %s option is not present" % option_name)
+        self.assertEqual(ret[option_name], value_expected,
+                         ("Volume option for %s is not equal to %s"
+                          % (option_name, value_expected)))
+        g.log.info("Volume option %s is equal to the expected value %s",
+                   option_name, value_expected)
+
+    def test_glusterd_set_reset_reserve_limit(self):
+        """
+        Test set and reset of reserve limit on glusterd
+        1. Create a volume and start it.
+        2. Set storage.reserve limit on the created volume and verify it.
+        3. Reset storage.reserve limit on the created volume and verify it.
+        """
+        # Setting storage.reserve to 50
+        ret = set_volume_options(self.mnode, self.volname,
+                                 {'storage.reserve': '50'})
+        self.assertTrue(ret, "Failed to set storage reserve on %s"
+                        % self.mnode)
+
+        # Validate storage.reserve option set to 50
+        self.validate_vol_option('storage.reserve', '50')
+
+        # Reseting the storage.reserve limit
+        ret, _, _ = reset_volume_option(self.mnode, self.volname,
+                                        'storage.reserve')
+        self.assertEqual(ret, 0, "Failed to reset the storage.reserve limit")
+
+        # Validate that the storage.reserve option is reset
+        self.validate_vol_option('storage.reserve', '1 (DEFAULT)')
+
+    def tearDown(self):
+        """tear Down Callback"""
+        # Unmount volume and cleanup.
+        ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
+        if not ret:
+            raise ExecutionError("Failed to unmount and cleanup volume")
+        g.log.info("Successful in unmount and cleanup of volume")
+
+        # Calling GlusterBaseClass tearDown
+        self.get_super_method(self, 'tearDown')()