[ovirt-users] gluster service on the cluster is unchecked on hci cluster

Hi, I would like to change CPU Type in my oVirt 4.4.10 HCI cluster (based on 3 glusterfs/virt hosts). When I try to I got this error Error while executing action: Cannot disable gluster service on the cluster as it contains volumes. As I remember I had Gluster Service enabled on this cluster but now both (Enable Virt Services and Enable Gluster Service) checkboxes are grayed out and Gluster Service is unchecked. Also Storage / Volumes displays my volumes... well, displays one brick on particular host in unknown state (? mark) which is new situation. As I can see from command line all bricks are online, no healing in progress, all looks good... I am not sure if the second issue is relevant to first one so main question is how can I (re)enable gluster service in my cluster? Thanks in advance, Jiri