Test etcd schizophrenia

src/osd/osd_cluster.cpp

@@ -1051,8 +1051,15 @@ void osd_t::report_pg_states()
     etcd_reporting_pg_state = true;
     st_cli.etcd_txn(json11::Json::object {
         { "compare", checks }, { "success", success }, { "failure", failure }
-    }, st_cli.etcd_quick_timeout, 0, 0, [this, reporting_pgs](std::string err, json11::Json data)
+    }, st_cli.etcd_quick_timeout, 0, 0, [this, reporting_pgs, success_count = success.size(), failure_count = failure.size()](std::string err, json11::Json data)
     {
+        int expected_count = (data["succeeded"].bool_value() ? success_count : failure_count);
+        if (expected_count != data["responses"].array_items().size())
+        {
+            printf("Unexpected response from etcd - 'responses' count (%u) isn't equal to expected (%u), stopping\n",
+                data["responses"].array_items().size(), expected_count);
+            force_stop(1);
+        }
         etcd_reporting_pg_state = false;
         if (!data["succeeded"].bool_value())
         {