checking at the level of created XML is enough from the POV of RHEV testing.
Created and updated vm with 4000gb via REST and also via CLI, to clarify I was just success to create vm and update vm without running it after, because we don't have host with such huge amount of memory
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.