Here it is on my single HCI node enironment with 4.3.9 and  these gluster related packages:

[root@ovirt ~]# rpm -qa|grep gluster
glusterfs-6.8-1.el7.x86_64
glusterfs-api-6.8-1.el7.x86_64
glusterfs-libs-6.8-1.el7.x86_64
gluster-ansible-roles-1.0.5-7.el7.noarch
python2-gluster-6.8-1.el7.x86_64
glusterfs-geo-replication-6.8-1.el7.x86_64
gluster-ansible-maintenance-1.0.1-1.el7.noarch
glusterfs-rdma-6.8-1.el7.x86_64
glusterfs-client-xlators-6.8-1.el7.x86_64
glusterfs-events-6.8-1.el7.x86_64
libvirt-daemon-driver-storage-gluster-4.5.0-23.el7_7.6.x86_64
gluster-ansible-features-1.0.5-3.el7.noarch
gluster-ansible-repositories-1.0.1-1.el7.noarch
vdsm-gluster-4.30.43-1.el7.x86_64
gluster-ansible-infra-1.0.4-3.el7.noarch
glusterfs-cli-6.8-1.el7.x86_64
glusterfs-fuse-6.8-1.el7.x86_64
glusterfs-server-6.8-1.el7.x86_64
gluster-ansible-cluster-1.0.0-1.el7.noarch
[root@ovirt ~]#

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/
total 0
drwxr-xr-x. 5 vdsm kvm 82 Mar 26 01:19 ovirtst.mydomain.storage:_data
drwxr-xr-x. 5 vdsm kvm 82 Mar 26 01:14 ovirtst.mydomain.storage:_engine
drwxr-xr-x. 5 vdsm kvm 82 Mar 26 01:19 ovirtst.mydomain.storage:_vmstore

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/ovirtst.mydomain.storage\:_engine/
total 0
drwxr-xr-x. 6 vdsm kvm 64 Mar 22 19:56 665ff83b-0552-4288-b0e3-7ceecfb4e9cf

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/ovirtst.mydomain.storage\:_engine/665ff83b-0552-4288-b0e3-7ceecfb4e9cf/
total 8
drwxr-xr-x. 2 vdsm kvm   89 Mar 22 19:51 dom_md
drwxr-xr-x. 2 vdsm kvm   67 Mar 24 17:42 ha_agent
drwxr-xr-x. 8 vdsm kvm 8192 Mar 22 19:53 images
drwxr-xr-x. 4 vdsm kvm   30 Mar 22 19:52 master

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/ovirtst.mydomain.storage\:_engine/665ff83b-0552-4288-b0e3-7ceecfb4e9cf/images/
total 0
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:50 1ceb4575-cf2f-4cbb-b3d4-3d674bc2bd31
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:50 1e4cd693-6755-4b08-8bed-8ea2617acceb
drwxr-xr-x. 2 vdsm kvm 149 Mar 22 19:53 27f69f37-5af4-487f-a480-2f5fe02c774f
drwxr-xr-x. 2 vdsm kvm 149 Mar 22 19:53 9ef0cef3-a17d-4739-961e-3d3ae89d6fee
drwxr-xr-x. 2 vdsm kvm 149 Mar 22 19:53 c0632b6c-2b2d-42c0-97c3-ed3507fe15f2
drwxr-xr-x. 2 vdsm kvm 149 Mar 22 19:53 c874a15c-2c19-4e78-8362-4104702f621e

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/ovirtst.mydomain.storage\:_vmstore
total 0
drwxr-xr-x. 4 vdsm kvm 34 Mar 22 20:00 81b97244-4b69-4d49-84c4-c822387adc6a

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/ovirtst.mydomain.storage\:_vmstore/81b97244-4b69-4d49-84c4-c822387adc6a/
total 8
drwxr-xr-x.  2 vdsm kvm   89 Mar 22 20:00 dom_md
drwxr-xr-x. 11 vdsm kvm 8192 Mar 25 14:07 images

[root@ovirt ~]# ls -l /rhev/data-center/mnt/glusterSD/ovirtst.mydomain.storage\:_vmstore/81b97244-4b69-4d49-84c4-c822387adc6a/images/
total 0
drwxr-xr-x. 2 vdsm kvm 149 Mar 26 00:50 08238512-aa7a-4ebb-82e4-6831e8805516
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:07 0a91c346-23a5-4432-8af7-ae0a28f9c208
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:06 34bf20a0-6e98-4ca7-b811-5883720b5b9c
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:06 3b753210-09f5-4c40-90fb-ded93b00d19f
drwxr-xr-x. 2 vdsm kvm 149 Mar 26 00:50 55d7c95e-8f54-41c8-8422-3daac542a917
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:07 5e2ee867-29cf-4e40-beca-a08660d85381
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:07 73776048-27ba-412d-a01c-9a46d267401c
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:06 b9df2cbe-eaad-49ee-9abc-81e944d13ef8
drwxr-xr-x. 2 vdsm kvm 149 Mar 25 14:06 d708ee51-c70b-4101-a6e9-986dff5c0f4b
[root@ovirt ~]#

Gianluca