Description of problem: Section "3.4. Upgrading a Red Hat Enterprise Linux 6 Cluster to Red Hat Enterprise Linux 7" of the RHEV 3.6 Upgrade Guide . Under "Procedure 3.2. Upgrading a Red Hat Enterprise Linux 6 Cluster to Red Hat Enterprise Linux 7" there is a list of steps to be applied to RHEV-M. This list of steps should include two additional steps after steps 1. and 7. instructing the user to restart 'ovirt-engine' service. A restart of the 'ovirt-engine' service is required after each of those "engine-config -s CheckMixedRhelVersions" commands for the change to be applied. See upstream oVirt documentation at the end of http://www.ovirt.org/feature/inclusterupgrade/ .
Assigning to Byron for review.
Updated content is now available here: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.6/html-single/Upgrade_Guide/index.html#Upgrading_a_Red_Hat_Enterprise_Linux_6_Cluster_to_Red_Hat_Enterprise_Linux_7 https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.6/html-single/Self-Hosted_Engine_Guide/index.html#Upgrading_the_Self-Hosted_Engine_from_6_to_7