qa: adding test for preventing scrub when mds is inactive

Fixes: https://tracker.ceph.com/issues/62537
Signed-off-by: Neeraj Pratap Singh <[email protected]>

Author: neeraj pratap singh

qa/tasks/cephfs/test_scrub_checks.py

@@ -177,6 +177,40 @@ def promoted():
 
         self._check_task_status_na()
 
+    def test_scrub_when_mds_is_inactive(self):
+        test_dir = "scrub_control_test_path"
+        abs_test_path = f"/{test_dir}"
+
+        self.create_scrub_data(test_dir)
+
+        # allow standby-replay
+        self.fs.set_max_mds(1)
+        self.fs.set_allow_standby_replay(True)
+        status = self.fs.wait_for_daemons()
+        sr_mds_id = self.fs.get_daemon_names('up:standby-replay', status=status)[0]
+
+        # start the scrub and verify
+        with self.assertRaises(CommandFailedError) as ce:
+            self.run_ceph_cmd('tell', f'mds.{sr_mds_id}', 'scrub', 
+                              'start', abs_test_path, 'recursive')
+        self.assertEqual(ce.exception.exitstatus, errno.EINVAL)
+
+        # pause and verify
+        with self.assertRaises(CommandFailedError) as ce:
+            self.run_ceph_cmd('tell', f'mds.{sr_mds_id}', 'scrub', 'pause')
+        self.assertEqual(ce.exception.exitstatus, errno.EINVAL)
+        
+        # abort and verify
+        with self.assertRaises(CommandFailedError) as ce:
+            self.run_ceph_cmd('tell', f'mds.{sr_mds_id}', 'scrub', 'abort')
+        self.assertEqual(ce.exception.exitstatus, errno.EINVAL)
+        
+        # resume and verify
+        with self.assertRaises(CommandFailedError) as ce:
+            self.run_ceph_cmd('tell', f'mds.{sr_mds_id}', 'scrub', 'resume')
+        self.assertEqual(ce.exception.exitstatus, errno.EINVAL)
+
+
 class TestScrubChecks(CephFSTestCase):
     """
     Run flush and scrub commands on the specified files in the filesystem. This