diff --git a/roles/setup-devstack-cache/README.rst b/roles/setup-devstack-cache/README.rst
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+Set up the devstack cache directory
+
+If the node has a cache of devstack image files, copy it into place.
+
+**Role Variables**
+
+.. zuul:rolevar:: devstack_base_dir
+   :default: /opt/stack
+
+   The devstack base directory.
+
+.. zuul:rolevar:: devstack_cache_dir
+   :default: /opt/cache
+
+   The directory with the cached files.
diff --git a/roles/setup-devstack-cache/defaults/main.yaml b/roles/setup-devstack-cache/defaults/main.yaml
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+devstack_base_dir: /opt/stack
+devstack_cache_dir: /opt/cache
diff --git a/roles/setup-devstack-cache/tasks/main.yaml b/roles/setup-devstack-cache/tasks/main.yaml
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+++ b/roles/setup-devstack-cache/tasks/main.yaml
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+- name: Copy cached devstack files
+  # This uses hard links to avoid using extra space.
+  command: "find {{ devstack_cache_dir }}/files -mindepth 1 -maxdepth 1 -exec cp -l {} {{ devstack_base_dir }}/devstack/files/ ;"
+  become: true
+
+- name: Set ownership of cached files
+  file:
+    path: '{{ devstack_base_dir }}/devstack/files'
+    state: directory
+    recurse: true
+    owner: stack
+    group: stack
+    mode: a+r
+  become: yes