diff --git a/playbooks/tempest-and-cinderlib-run.yaml b/playbooks/tempest-and-cinderlib-run.yaml
index cbb33273daa..e71417d2b91 100644
--- a/playbooks/tempest-and-cinderlib-run.yaml
+++ b/playbooks/tempest-and-cinderlib-run.yaml
@@ -19,7 +19,7 @@
     - setup-tempest-data-dir
     - acl-devstack-files
     - role: run-tempest
-      # ignore the errors, so that run-cinderlib-tests is always executed
+      # ignore the errors here (but consider them later), so that run-cinderlib-tests is always executed
       ignore_errors: yes
     - role: change-devstack-data-owner
       devstack_data_subdir_changed: cinder
@@ -27,3 +27,8 @@
     - role: run-cinderlib-tests
       tox_install_siblings: false
       cinderlib_base_dir: "{{ ansible_user_dir }}/{{ zuul.projects['opendev.org/openstack/cinderlib'].src_dir }}"
+  post_tasks:
+    - name: Fail if the first tempest run did not work
+      fail:
+         msg: "tempest run returned with an error"
+      when: tempest_run_result is defined and tempest_run_result.rc != 0