Merge PR #53873 into main

* refs/pull/53873/head:
	qa: typo fix when checking for perf counter - s/md_thresh_evicted/mdthresh_evicted
	qa: lower mds_session_metadata_threshold for tests

Reviewed-by: Milind Changire <mchangir@redhat.com>
Reviewed-by: Rishabh Dave <ridave@redhat.com>
Reviewed-by: Leonid Usov <leonid.usov@ibm.com>

.githubmap

@@ -175,3 +175,4 @@ phlogistonjohn John Mulligan <jmulligan@redhat.com>
 baergj Joshua Baergen <jbaergen@digitalocean.com>
 zmc Zack Cerza <zack@redhat.com>
 robbat2 Robin H. Johnson <robbat2@orbis-terrarum.net>
+leonid-s-usov Leonid Usov <leonid.usov@ibm.com>

qa/tasks/cephfs/test_client_limits.py

@@ -272,20 +272,19 @@ def test_client_blocklisted_oldest_tid(self):
         # Wait for the health warnings. Assume mds can handle 10 request per second at least
         self.wait_for_health("MDS_CLIENT_OLDEST_TID", max_requests // 10, check_in_detail=str(self.mount_a.client_id))
 
-        # why a multiplier of 20, you may ask - I arrieved at this from some debugs
-        # that I put when testing the fix in a vstart cluster where its a ratio of
-        # encoded session information to the number of completed requests.
-        self.config_set('mds', 'mds_session_metadata_threshold', max_requests*20);
+        # set the threshold low so that it has a high probability of
+        # hitting.
+        self.config_set('mds', 'mds_session_metadata_threshold', 5000);
 
-        # Create a few more files synchronously. This would hit the session metadata threshold
+        # Create lot many files synchronously. This would hit the session metadata threshold
         # causing the client to get blocklisted.
         with self.assertRaises(CommandFailedError):
-            self.mount_a.create_n_files("testdir/file2", 20, True)
+            self.mount_a.create_n_files("testdir/file2", 100000, True)
 
         self.mds_cluster.is_addr_blocklisted(self.mount_a.get_global_addr())
         # the mds should bump up the relevant perf counter
         pd = self.perf_dump()
-        self.assertGreater(pd['mds_sessions']['md_thresh_evicted'], 0)
+        self.assertGreater(pd['mds_sessions']['mdthresh_evicted'], 0)
 
         # reset the config
         self.config_set('client', 'client inject fixed oldest tid', 'false')