diff --git a/tasks/storage.yml b/tasks/storage.yml
index 664a222..433aa33 100644
--- a/tasks/storage.yml
+++ b/tasks/storage.yml
@@ -12,6 +12,7 @@
       lvg:
         vg: "{{ postgres_lvm_vg }}"
         pvs: "{{ postgres_lvm_pvs | join(',') }}"
+        pesize: "4"
 
     - name: Create logical volume '{{ postgres_lvm_lv }}'
       lvol: