Hello,

I am running oVirt 4.3.6 and glusterd service and peers on all HCI nodes are connected and working properly after updating.  I'm not sure if I understand what your question or issue is.  It definitely should be safe to update your oVirt HCI to 4.3.6.  GlusterFS is able to update from 5.6 to 6.5 one host at a time, the other hosts are still able to connect after one has been updated to Gluster 6x