test: add a test for `fs set down` on online cluster

Fixes: https://tracker.ceph.com/issues/66960
Signed-off-by: chungfengz <chungfengz@synology.com>

diff --git a/qa/workunits/cephtool/test.sh b/qa/workunits/cephtool/test.sh
index 89fdcaf05933a68d6edde59207248d392073ad7a..cdfff17d837ef50b337fdced121c020268f1e864 100755 (executable)
--- a/qa/workunits/cephtool/test.sh
+++ b/qa/workunits/cephtool/test.sh
@@ -976,6 +976,11 @@ function test_mon_mds()
   ceph fs set $FS_NAME cluster_down true
   ceph fs set $FS_NAME cluster_down false
 
+  ceph fs set $FS_NAME max_mds 2
+  ceph fs get $FS_NAME | expect_true grep -P -q 'max_mds\t2'
+  ceph fs set $FS_NAME down false
+  ceph fs get $FS_NAME | expect_true grep -P -q 'max_mds\t2'
+
   ceph mds compat rm_incompat 4
   ceph mds compat rm_incompat 4