making sure gluster op.version is set. unfortunately via manual intervention after force fail

roles/gluster_server/tasks/main.yml

 ---
 #https://docs.gluster.org/en/latest/Administrator%20Guide/Storage%20Pools/
+
+
 - name: install gluster repository
   yum:
     name:
@@ -11,8 +13,8 @@
   become: true
   become_user: root
   register: glusterrepo_added
-  
-- name: force refresh of the repository cache   
+
+- name: force refresh of the repository cache
   shell: |
     yum clean metadata
     yum clean all
@@ -24,7 +26,7 @@
   check_mode: no
   when: ansible_os_family == 'RedHat' and glusterrepo_added.changed
   args:
-    warn: False  
+    warn: False
 
 - name: install gluster
   yum:
@@ -45,7 +47,7 @@
   when: ansible_os_family == 'Debian'
   become: true
   become_user: root
-  
+
 
 - name: start daemon
   service: name=glusterd enabled=yes state=started
@@ -73,7 +75,7 @@
   run_once: True
   delegate_to: "{{ groups['SQLNodes'][0] }}"
   when: gluster_installed.changed
-  
+
 - name: enable bitrot
   command: "gluster volume bitrot gv enable"
   become: true
@@ -82,8 +84,15 @@
   run_once: True
   delegate_to: "{{ groups['SQLNodes'][0] }}"
   when: gluster_installed.changed
-  
-  
+
+#https://docs.gluster.org/en/v3/Upgrade-Guide/op_version/
+- name: fail on purpose to manually look up gluster op.version and use it in a later task
+  fail:
+    msg: The purpose of this fail is to 1. let you look up what op.version we want to use via gluster volume get all cluster.max-op-version. read doco above ansible line. 2. set this in this role below. 3. comment this fail and run ansible.
+
+- name: set cluster.op-version set this after fail
+  command: "gluster volume set all cluster.op-version 90000"
+
   #gluster volume bitrot <VOLNAME> enable
 
 #not needed anymore or not supported