title: Write permissions on volume mount with OpenShift
body: <p>Using OpenShift 3.11, I've mounted an nfs persistent volume, but the application cannot copy into the new volume, saying:</p>
  
  <pre><code>oc logs my-project-77858bc694-6kbm6 
  cp: cannot create regular file '/config/dbdata/resdb.lock.db': Permission denied
  ...
  </code></pre>
  
  <p>I've tried to change the ownership of the folder by doing a chown in an InitContainers, but it tells me the operation not permitted. </p>
  
  <pre><code>      initContainers:
          - name: chowner
            image:  alpine:latest
            command: ["/bin/sh", "-c"]
            args:
              - ls -alt /config/dbdata; chown 1001:1001 /config/dbdata;
            volumeMounts:
            - name: my-volume
              mountPath: /config/dbdata/ 
  </code></pre>
  
  <pre><code>oc logs my-project-77858bc694-6kbm6 -c chowner
  total 12
  drwxr-xr-x    3 root     root          4096 Nov  7 03:06 ..
  drwxr-xr-x    2 99       99            4096 Nov  7 02:26 .
  chown: /config/dbdata: Operation not permitted
  </code></pre>
  
  <p>I expect to be able to write to the mounted volume.</p>