diff --git a/tripleo_ansible/roles/tripleo_lvmfilter/defaults/main.yml b/tripleo_ansible/roles/tripleo_lvmfilter/defaults/main.yml
index 6e00dc832..883876fd5 100644
--- a/tripleo_ansible/roles/tripleo_lvmfilter/defaults/main.yml
+++ b/tripleo_ansible/roles/tripleo_lvmfilter/defaults/main.yml
@@ -19,5 +19,6 @@
 
 # All variables within this role should have a prefix of "tripleo_tripleo_lvmfilter"
 tripleo_tripleo_lvmfilter_enabled: false
+tripleo_tripleo_lvmfilter_dry_run: false
 tripleo_tripleo_lvmfilter_devices_allowlist: []
 tripleo_tripleo_lvmfilter_devices_denylist: []
diff --git a/tripleo_ansible/roles/tripleo_lvmfilter/tasks/main.yml b/tripleo_ansible/roles/tripleo_lvmfilter/tasks/main.yml
index 62c8db9f1..a08e030e8 100644
--- a/tripleo_ansible/roles/tripleo_lvmfilter/tasks/main.yml
+++ b/tripleo_ansible/roles/tripleo_lvmfilter/tasks/main.yml
@@ -19,7 +19,9 @@
   package_facts:
     manager: auto
 - name: gather allowed block devices list
-  when: "'lvm2' in ansible_facts.packages"
+  when:
+    - "'lvm2' in ansible_facts.packages"
+    - tripleo_tripleo_lvmfilter_enabled or tripleo_tripleo_lvmfilter_dry_run
   block:
     - name: collect in-use lvm2 devices list
       become: true