diff --git a/playbooks/include/deploy-kvm-guest.yml b/playbooks/include/deploy-kvm-guest.yml
index 9a030bf..65f8cd9 100644
--- a/playbooks/include/deploy-kvm-guest.yml
+++ b/playbooks/include/deploy-kvm-guest.yml
@@ -19,7 +19,7 @@
     virt_install_disks: >-
       {% if datadisks is defined %}
       {%   for i in range(datadisks|count) %}
-      --disk {{ base }}.{{ char[i] }}.img,{{ dsk_opts }},size={{ datadisks[i] }}
+      --disk {{ base }}.{{ char[i] }}.img,{{ dsk_opts }},size={{ datadisks[i] }},sparse=no
       {%   endfor %}
       {% endif %}