}
+# tiering
+ceph osd pool create cache 2
+ceph osd pool create cache2 2
+ceph osd tier add data cache
+ceph osd tier add data cache2
+expect_false ceph osd tier add metadata cache
+ceph osd tier cache-mode cache writeback
+ceph osd tier cache-mode cache readonly
+ceph osd tier cache-mode cache none
+ceph osd tier remove data cache
+ceph osd tier add metadata cache
+ceph osd tier remove metadata cache
+ceph osd tier remove data cache2
+ceph osd pool delete cache cache --yes-i-really-really-mean-it
+ceph osd pool delete cache2 cache2 --yes-i-really-really-mean-it
#
# Assumes there are at least 3 MDSes and two OSDs