[ovirt-users] Update to 4.2.0 failing in db check

[Giorgio Biacchi]

Hello list,
I was about to upgrade from 4.1.8.2-1.el7.centos to 4.2.0 but engine-setup 
fails. Here's the relevant output:

[ ERROR ] Failed to execute stage 'Setup validation': Failed checking Engine 
database: an exception occurred while validating the Engine database, please 
check the logs for getting more info:
          Constraint violation found in  vm_interface (vmt_guid) |1

[ INFO  ] Stage: Clean up
           Log file is located at 
/var/log/ovirt-engine/setup/ovirt-engine-setup-20171220110337-cy5ri9.log
[ INFO  ] Generating answer file 
'/var/lib/ovirt-engine/setup/answers/20171220110551-setup.conf'
[ INFO  ] Stage: Pre-termination
[ INFO  ] Stage: Termination
[ ERROR ] Execution of setup failed

any ideas??
-- 
gb

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