Attempting to run 'heketi-cli setup-openshift-heketi-storage' results in 'Error: No space'

Issue

• When attempting to run 'setup-openshift-heketi-storage', the following error is reported :

#  heketi-cli -s http://172.28.19.136:8080 setup-openshift-heketi-storage
Error: No space
Heketi shows the following error :

[heketi] INFO 2017/09/27 00:01:51 Creating volume 8c01dba580196bc8bf280252250068f2
[heketi] ERROR 2017/09/27 00:01:51 /src/github.com/heketi/heketi/apps/glusterfs/volume_entry.go:290: Volume being ask to be created, but there are no clusters configured
[heketi] ERROR 2017/09/27 00:01:51 /src/github.com/heketi/heketi/apps/glusterfs/app_volume.go:149: Failed to create volume: No space
[negroni] Completed 500 Internal Server Error in 44.056µs