I've got a 4 node cluster running oVirt 4.2.7.  3 hosts are hyperconverged with glusterfs.  Engine is running on one of the gluster volumes.  Since yesterday, the cluster is completely unstable and will not reliably run VMs including the Engine.  A notification will pop up in the WebUI stating "Finished invoking activate on host ovirt1" while the task list indicates "Activating host ovirt1".  When this task ultimately fails, the node in question goes NonOperational.  All our VMs have been down since 3pm yesterday, so help is greatly appreciated. Sincerely, Jason