I am trying to upgrade a cluster from 3.5 -> 3.6 -> 4.0. The engine is
currently on the 3.6 release but I seem unable to upgrade the ovirt-nodes
(thin hypervisors) to 3.6.

When trying a fresh install (clean bare metal server) using the
ovirt-node-ng-installer-ovirt-3.6-201606052403.iso the install fails at the
end with the following error:

> error: sum of all thin volume sizes (495.16 GB) exceeds the side of thin
> pool onn/pool00 and the size of the whole volume group (465.24GB)

This is when having the installer choose the partition schema. However when
I try to install using a manual partition schema based on the schema
recommendation it still fails.

The 4.x installer works fine, but I don't think I can use this since I will
have to upgrade to the cluster to 3.6 with el7 hosts firsts?

Any workarounds that I can try to get 3.6 installed?

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