doc/cephfs: link in mantle doc

...and add a warning at the very top of the document
that it is not for ordinary user use.

Considered just not linking this in at all, but it
seems a shame to have it here but not be able to
e.g. google it and link to it.

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

diff --git a/doc/cephfs/index.rst b/doc/cephfs/index.rst
index 1eefab873dfac7f6f644f504552483fe02cf5418..fcb00d3fab0632c58565772f9032b51f92e140ca 100644 (file)
--- a/doc/cephfs/index.rst
+++ b/doc/cephfs/index.rst
@@ -96,6 +96,7 @@ authentication keyring.
        Disaster recovery <disaster-recovery>
        Client authentication <client-auth>
        Upgrading old filesystems <upgrading>
+       Mantle <mantle>
 
 .. raw:: html
 

diff --git a/doc/cephfs/mantle.rst b/doc/cephfs/mantle.rst
index f5f7f303c52cc77d9ca5bebc66a445775be0aac8..21e7d7edcee530fe672d4a81fdc9a1d39370e676 100644 (file)
--- a/doc/cephfs/mantle.rst
+++ b/doc/cephfs/mantle.rst
@@ -1,6 +1,11 @@
 Mantle
 ======
 
+.. warning::
+
+    Mantle is for research and development of metadata balancer algorithms,
+    not for use on production CephFS clusters.
+
 Multiple, active MDSs can migrate directories to balance metadata load. The
 policies for when, where, and how much to migrate are hard-coded into the
 metadata balancing module. Mantle is a programmable metadata balancer built