Number of replicas must match number of bricks.

roles/gluster/consolidated/tasks/main.yml

@@ -56,7 +56,7 @@
     state: present
     name: "{{ gluster_brick_name }}"
     brick: "{{ gluster_brick_dir }}"
-    replicas: 2
+    replicas: "{{ groups[gluster_server_group] | count }}"
     cluster: "{{ groups[gluster_server_group] | join(',') }}"
     host: "{{ inventory_hostname }}"
     force: yes