DOCS-4522: mongotop 2.8 replset changes

- Updates ticket scope to actually only report on new error
  messaging, since behaviour has not changed from 2.6 -> 2.8.

Author: schmalliso

source/includes/options-mongotop.yaml

@@ -37,16 +37,8 @@ inherit:
   program: _shared
   file: options-shared.yaml
 post: |
-
-
-  .. versionchanged:: 2.8.0
-     If connected to a replica set, {{program}} only reports activity
-     on the :term:`primary`. {{program}} will not include activity on
-     the :term:`secondaries <secondary>`.
-     If the :term:`primary` is not reachable, {{program}} returns an
-     error message. See:
-     :ref:`Use with Replica Sets <mongotop-use-replicasets>`
-     for more information.
+     If connected to a replica set where the :term:`primary` is not
+     reachable, {{program}} returns an error message.
 ---
 program: mongotop
 name: port
@@ -139,8 +131,11 @@ inherit:
   program: _shared
   file: options-shared.yaml
 post: |
-  {{role}} is required for :program:`mongod`
-  and :program:`mongos` instances that use :ref:`authentication`.
+
+
+  .. versionchanged:: 2.8.0
+     {{role}} is required for :program:`mongod`
+     and :program:`mongos` instances that use :ref:`authentication`.
 ---
 program: mongotop
 name: authenticationMechanism
@@ -178,6 +173,9 @@ description: |
   Toggles the mode of :program:`mongotop` to report on use of per-database
   :ref:`locks <locks>`. These data are useful for measuring concurrent
   operations and lock percentage.
+post: |
+  {{role}} returns an error when called against a :program:`mongod` instance
+  that does not report lock usage.
 optional: true
 ---
 program: mongotop

source/reference/program/mongotop.txt

@@ -198,6 +198,11 @@ This command produces the following output:
   local.system.namespaces      0ms     0ms      0ms
      local.system.replset      0ms     0ms      0ms
 
+The output varies depending on your MongoDB setup. For example,
+``local.system.indexes`` and ``local.system.namespaces`` only appears
+for :program:`mongod` instances using the :ref:`MMAPv1 <storage-mmapv1>`
+storage engine.
+
 To return a :program:`mongotop` report every 5 minutes, use the
 following command:
 
@@ -218,39 +223,7 @@ which produces the following output:
                   admin         0ms         0ms         0ms
                       .         0ms         0ms         0ms
 
-.. _mongotop-use-replicasets:
-
 .. versionchanged:: 2.8.0
-   When connected to a replica set, :program:`mongotop` only reports activity
-   on the :term:`primary`. :program:`mongotop` will not include activity on
-   the :term:`secondaries <secondary>`.
-
-   If the :term:`primary` is not reachable or no members of the seed list
-   are part of the specified replica set, :program:`mongotop` returns an
-   error, as in the following output:
-
-   .. code-block:: sh
-
-                          ns    total    read    write    2014-12-19T15:31:45-05:00
-          admin.system.roles      0ms     0ms      0ms
-        admin.system.version      0ms     0ms      0ms
-                    local.me      0ms     0ms      0ms
-              local.oplog.rs      0ms     0ms      0ms
-      local.replset.minvalid      0ms     0ms      0ms
-           local.startup_log      0ms     0ms      0ms
-        local.system.replset      0ms     0ms      0ms
-
-      2014-12-19T15:31:51.824-0500    Error: no reachable servers
-
-      2014-12-19T15:31:57.834-0500    Error: no reachable servers
-
-                           ns    total    read    write    2014-12-19T15:32:01-05:00
-           admin.system.roles      0ms     0ms      0ms
-         admin.system.version      0ms     0ms      0ms
-                     local.me      0ms     0ms      0ms
-               local.oplog.rs      0ms     0ms      0ms
-       local.replset.minvalid      0ms     0ms      0ms
-            local.startup_log      0ms     0ms      0ms
-         local.system.indexes      0ms     0ms      0ms
-      local.system.namespaces      0ms     0ms      0ms
-         local.system.replset      0ms     0ms      0ms
+   When called against a :program:`mongod` that does not report lock
+   usage, :option:`--locks` will return a ``Failed: Server does not
+   support reporting locking information`` error.