doc/cephfs: add client_mds_auth_caps client feature bit

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 536b47cbfc669b5a3f04d93964408a2258d05ad0)

diff --git a/doc/cephfs/administration.rst b/doc/cephfs/administration.rst
index 0b3f9dcf5d36e50c54de61e419c10c9d8550ca92..d2f3452d1ad0f580dc87c1dd0174ebac0bc7d30c 100644 (file)
--- a/doc/cephfs/administration.rst
+++ b/doc/cephfs/administration.rst
@@ -333,6 +333,8 @@ Here are the current CephFS features and first release they came out:
 +----------------------------+--------------+-----------------+
 | has_owner_uidgid           | reef         | 6.6             |
 +----------------------------+--------------+-----------------+
+| client_mds_auth_caps       | squid+bp     | PLANNED         |
++----------------------------+--------------+-----------------+
 
 ..
     Comment: use `git describe --tags --abbrev=0 <commit>` to lookup release
@@ -394,6 +396,15 @@ Clients can send performance metric to MDS if MDS support this feature.
 Clients can set and understand "alternate names" for directory entries. This is
 to be used for encrypted file name support.
 
+::
+
+    client_mds_auth_caps
+
+To effectively implement ``root_squash`` in a client's ``mds`` caps, the client
+must understand that it is enforcing ``root_squash`` and other cap metadata.
+Clients without this feature are in danger of dropping updates to files.  It is
+recommend to set this feature bit.
+
 
 Global settings
 ---------------