doc/cephfs: mention "ceph fs set-default"

Signed-off-by: John Spray <john.spray@redhat.com>

diff --git a/doc/cephfs/createfs.rst b/doc/cephfs/createfs.rst
index 7bd4511b2d89fd52934e0e7beed126347cf89d60..7eb502b8536c68e13ee6afc87759777cace0ac20 100644 (file)
--- a/doc/cephfs/createfs.rst
+++ b/doc/cephfs/createfs.rst
@@ -58,6 +58,10 @@ choose which to use when mounting.
 .. _Mount CephFS: ../../cephfs/kernel
 .. _Mount CephFS as FUSE: ../../cephfs/fuse
 
+If you have created more than one filesystem, and a client does not
+specify a filesystem when mounting, you can control which filesystem
+they will see by using the `ceph fs set-default` command.
+
 Using Erasure Coded pools with CephFS
 =====================================