--- /dev/null
+#!/bin/sh -ex
+
+# dir: srcdn=destdn
+mkdir ./a/dir1
+mv ./a/dir1 ./a/dir1.renamed
+
+# dir: diff
+mkdir ./a/dir2
+mv ./a/dir2 ./b/dir2
+
+# dir: diff, child subtree on target
+mkdir -p ./a/dir3/child/foo
+$CEPH_TOOL mds tell 0 export_dir /a/dir3/child 1
+sleep 5
+mv ./a/dir3 ./b/dir3
+
+# dir: diff, child subtree on other
+mkdir -p ./a/dir4/child/foo
+$CEPH_TOOL mds tell 0 export_dir /a/dir4/child 2
+sleep 5
+mv ./a/dir4 ./b/dir4
+
+# dir: witness subtree adjustment
+mkdir -p ./a/dir5/1/2/3/4
+$CEPH_TOOL mds tell 0 export_dir /a/dir5/1/2/3 2
+sleep 5
+mv ./a/dir5 ./b
+