doc/rgw/notification: clarified the notification_v2 behavior upon upgrade

Fixes: https://tracker.ceph.com/issues/68858
Signed-off-by: Yuval Lifshitz <ylifshit@ibm.com>
(cherry picked from commit fccf7fd25e57772e91975b1b2038b8cecf68c440)

diff --git a/doc/radosgw/notifications.rst b/doc/radosgw/notifications.rst
index 6a9cf79cb8b2a5cce075ec9b93ee94d4cb1b0f21..c358c5c01a8747bc043b8cddc650a5844d594fe0 100644 (file)
--- a/doc/radosgw/notifications.rst
+++ b/doc/radosgw/notifications.rst
@@ -7,6 +7,10 @@ Bucket Notifications
 .. versionchanged:: Squid
    A new "v2" format for Topic and Notification metadata can be enabled with
    the :ref:`feature_notification_v2` zone feature.
+   Enabling this feature after an upgrade from an older version will trigger
+   migration of the existing Topic and Notification metadata. 
+   In a greenfield deployment, the new format will be used.
+   The new format allows for the data to be synced between zones in the zonegroup.
 
 .. contents::