doc/cephfs: add client_mds_auth_caps client feature bit

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>

diff --git a/doc/cephfs/administration.rst b/doc/cephfs/administration.rst
index 36960044604df1e218aa82206812f95c5c144649..8744a41ddf046388dd6075fb904afefe11e88345 100644 (file)
--- a/doc/cephfs/administration.rst
+++ b/doc/cephfs/administration.rst
@@ -341,6 +341,8 @@ 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
@@ -402,6 +404,15 @@ 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
 ---------------