doc: update cephfs administration page for enable_multiple safety check

Signed-off-by: Greg Farnum <gfarnum@redhat.com>

diff --git a/doc/cephfs/administration.rst b/doc/cephfs/administration.rst
index 40d4301e414fcdaa2e6af011cae6df3fda327861..da95fe359b908b0c188494e09d4fdcd2c22d4c99 100644 (file)
--- a/doc/cephfs/administration.rst
+++ b/doc/cephfs/administration.rst
@@ -79,10 +79,14 @@ Global settings
 
 ::
 
-    fs flag set <flag name> <flag val>
+    fs flag set <flag name> <flag val> [<confirmation string>]
 
     flag name must be one of ['enable_multiple']
 
+    some flags require you to confirm your intentions with "--yes-i-really-mean-it"
+    or a similar string they will prompt you with. Consider these actions carefully
+    before proceeding; they are placed on especially dangerous activities.
+
 Advanced
 --------