<capabilities>
    <version major="3" minor="3">
        ...
        <host_non_operational_details>
            <host_non_operational_detail>
            	none
            </host_non_operational_detail>
            <host_non_operational_detail>
            	general
            </host_non_operational_detail>
            <host_non_operational_detail>
            	cpu_type_incompatible_with_cluster
            </host_non_operational_detail>
            <host_non_operational_detail>
            	storage_domain_unreachable
            </host_non_operational_detail>
            <host_non_operational_detail>
            	network_unreachable
            </host_non_operational_detail>
            <host_non_operational_detail>
            	version_incompatible_with_cluster
            </host_non_operational_detail>
            <host_non_operational_detail>
            	kvm_not_running
            </host_non_operational_detail>
            <host_non_operational_detail>
            	timeout_recovering_from_crash
            </host_non_operational_detail>
            <host_non_operational_detail>
            	vm_network_is_bridgeless
            </host_non_operational_detail>
            <host_non_operational_detail>
            	gluster_command_failed
            </host_non_operational_detail>
            <host_non_operational_detail>
            	gluster_host_uuid_not_found
            </host_non_operational_detail>
            <host_non_operational_detail>
            	emulated_machines_incompatible_with_cluster
            </host_non_operational_detail>
            <host_non_operational_detail>
            	untrusted
            </host_non_operational_detail>
            <host_non_operational_detail>
            	uninitialized
            </host_non_operational_detail>
            <host_non_operational_detail>
            	cluster_version_incompatible_with_cluster
            </host_non_operational_detail>
        </host_non_operational_details>
        ...
    </version>
</capabilities>