--- /dev/null
+#!/bin/sh -x
+
+set -e
+
+ceph mds set allow_new_snaps true --yes-i-really-mean-it
+
+echo "testing simple xattr wb"
+touch x
+setfattr -n user.foo x
+mkdir .snap/s1
+getfattr -n user.foo .snap/s1/x | grep user.foo
+rm x
+rmdir .snap/s1
+
+echo "testing wb with pre-wb server cow"
+mkdir a
+mkdir a/b
+mkdir a/b/c
+# b now has As but not Ax
+setfattr -n user.foo a/b
+mkdir a/.snap/s
+mkdir a/b/cc
+# b now has been cowed on the server, but we still have dirty xattr caps
+getfattr -n user.foo a/b # there they are...
+getfattr -n user.foo a/.snap/s/b | grep user.foo # should be there, too!
+
+# ok, clean up
+rmdir a/.snap/s
+rm -r a
+
+echo OK
\ No newline at end of file