to enumerate the objects during operations like stats or deletes.
+Taking the cluster down
+-----------------------
+
+Taking a CephFS cluster down is done by reducing the number of ranks to 1,
+setting the cluster_down flag, and then failing the last rank. For example:
+
+::
+ ceph fs set <fs_name> max_mds 1
+ ceph mds deactivate <fs_name>:1 # rank 2 of 2
+ ceph status # wait for rank 1 to finish stopping
+ ceph fs set <fs_name> cluster_down true
+ ceph mds fail <fs_name>:0
+
+Setting the ``cluster_down`` flag prevents standbys from taking over the failed
+rank.
+
Daemons
-------