How to troubleshoot a persistent volume creation failure in Openshift Container Storage 3.x?

Issue

When a persistent volume claim fails to provision a Gluster volume, the error message obtained might be quite generic:

$ oc get events

LAST SEEN   FIRST SEEN   COUNT     NAME                                            KIND                    SUBOBJECT   TYPE      REASON               SOURCE                         MESSAGE
17s         2d           16739     test-pvc   PersistentVolumeClaim               Warning        ProvisioningFailed   persistentvolume-controller   Failed to provision volume with StorageClass "glusterfs-storage": failed to create volume: failed to create volume: see kube-controller-manager.log for details

The above error doesn't show any reason why the volume creation doesn't succeed. In addition, the file kube-controller-manager.log is not present in any master node.

How to figure out what is the real condition at the Gluster side?