diff --git a/roles/ipa-build-dib-image/defaults/main.yaml b/roles/ipa-build-dib-image/defaults/main.yaml
index 42a5952..3d3859e 100644
--- a/roles/ipa-build-dib-image/defaults/main.yaml
+++ b/roles/ipa-build-dib-image/defaults/main.yaml
@@ -8,4 +8,5 @@ ipa_raw_dir: '{{ ansible_user_dir }}/src/opendev.org/openstack/ironic-python-age
 ipa_tar_dir: '{{ ansible_user_dir }}/src/opendev.org/openstack/ironic-python-agent/UPLOAD_TAR'
 dib_extra_args:
 dib_from_source: true
+dib_no_tmpfs: 0
 extra_elements: ["dynamic-login"]
diff --git a/roles/ipa-build-dib-image/tasks/main.yaml b/roles/ipa-build-dib-image/tasks/main.yaml
index 06347cc..fa69413 100644
--- a/roles/ipa-build-dib-image/tasks/main.yaml
+++ b/roles/ipa-build-dib-image/tasks/main.yaml
@@ -35,6 +35,11 @@
   environment:
     # Increase from the default value of 30
     DIB_DHCP_TIMEOUT: 60
+    # Use or not tmpfs to build the image, default to use it.
+    # As images become bigger and bigger, in the future we may
+    # decide to switch to not use it by default since we have
+    # enough disk space.
+    DIB_NO_TMPFS: '{{ dib_no_tmpfs }}'
     # Use repositories checked out by Zuul (combined with -b HEAD above)
     DIB_REPOLOCATION_ironic_python_agent: '{{ ipa_source_path }}'
     DIB_REPOLOCATION_requirements: '{{ requirements_path }}'