Hello, I got a similar issue deploying OLVM 4.5.4 over an MSA by FiberChannel In your KVM host probably you have the ha-agent or ha-broker stopped. Check the logs at your kvm host at /var/log/ovirt-hosted-engine-ha/agent.log or broker.log. In my case was an issue with metadata corruption, ant the log complained about the /rhev/data-center/mnt/blockSD/blablablabla/ha_agent/hosted-engine.metadata That can be fixed as stated by Yeddiyah Bar David in the past. I stopped the broker and agent services, archived the existing hosted metadata files, created an empty metadata 1GB file with dd (dd if=/dev/zero of=/run/vdsm/storage/your-uuid/your-uuid/ bs=1M count=1024), check permissions and owner vdsm:kvm 0644 and then playing around with the "hosted-engine --connect-storage", "hosted-engine maintenance mode and so on, it worked. Good luck