Change the default volume type of GlusterFS provisioner.

pkg/volume/glusterfs/glusterfs.go

@@ -55,6 +55,8 @@ var _ volume.Deleter = &glusterfsVolumeDeleter{}
 const (
 	glusterfsPluginName = "kubernetes.io/glusterfs"
 	volprefix           = "vol_"
+	replicacount        = 3
+	durabilitytype      = "replicate"
 )
 
 func (plugin *glusterfsPlugin) Init(host volume.VolumeHost) error {
@@ -467,7 +469,7 @@ func (p *glusterfsVolumeProvisioner) CreateVolume() (r *api.GlusterfsVolumeSourc
 		glog.Errorf("glusterfs: failed to create gluster rest client")
 		return nil, 0, fmt.Errorf("failed to create gluster REST client, REST server authentication failed")
 	}
-	volumeReq := &gapi.VolumeCreateRequest{Size: sz}
+	volumeReq := &gapi.VolumeCreateRequest{Size: sz, Durability: gapi.VolumeDurabilityInfo{Type: durabilitytype, Replicate: gapi.ReplicaDurability{Replica: replicacount}}}
 	volume, err := cli.VolumeCreate(volumeReq)
 	if err != nil {
 		glog.Errorf("glusterfs: error creating volume %s ", err)