If I then connect the new install on centos 7 and run engine-setup, I get the following output:
-== END OF CONFIGURATION ==--
[ INFO ] Stage: Setup validation
During execution engine service will be stopped (OK, Cancel) [OK]:
[WARNING] Less than 16384MB of memory is available
[ INFO ] Cleaning stale zombie tasks and commands
An existing DWH is configured to work with this engine.
A positive answer to the following question will cause the existing DWH to be permanently disconnected from the engine.
A negative answer will stop Setup.
Do you want to permanently disconnect this DWH from the engine? (Yes, No) [No]: Yes
--== CONFIGURATION PREVIEW ==--
Default SAN wipe after delete : False
Update Firewall : False
Engine database secured connection : False
Engine database host : ovirtdb01dev
Engine database user name : engine
Engine database name : engine
Engine database port : 5432
Engine database host name validation : False
Engine installation : True
DWH installation : True
DWH database secured connection : False
DWH database host : localhost
DWH database user name : ovirt_engine_history
DWH database name : ovirt_engine_history
DWH database port : 5432
DWH database host name validation : False
Configure local DWH database : True
Reports installation : True
Reports database name : ovirt_engine_reports
Reports database secured connection : False
Reports database host : localhost
Reports database port : 5432
Reports database user name : ovirt_engine_reports
Reports database host name validation : False
Configure VMConsole Proxy : True
Configure WebSocket Proxy : True
Please confirm installation settings (OK, Cancel) [OK]:
[WARNING] Setup found legacy kerberos/ldap directory integration in use (added by engine-manage-domains). This provider is obsoleted and will be removed in future. Please migrate to ovirt-engine-extension-aaa-ldap provider or contact support for assistance.
[ INFO ] Cleaning async tasks and compensations
[ INFO ] Unlocking existing entities
[ INFO ] Checking the Engine database consistency
[ INFO ] Stage: Transaction setup
[ INFO ] Stopping dwh service
[ INFO ] Stopping reports service
[ INFO ] Stopping engine service
[ INFO ] Stopping ovirt-fence-kdump-listener service
[ INFO ] Stopping websocket-proxy service
[ INFO ] Stage: Misc configuration
[ INFO ] Regenerating Jasper's build configuration files
[ INFO ] Exporting data out of Jasper
[ INFO ] Stage: Package installation
[ INFO ] Stage: Misc configuration
[ INFO ] Creating PostgreSQL 'ovirt_engine_history' database
[ INFO ] Configuring PostgreSQL
[ INFO ] Backing up database ovirtdb01dev:engine to '/var/lib/ovirt-engine/backups/engine-20160708135630.DQXLX8.dump'.
[ INFO ] Creating/refreshing Engine database schema
[ INFO ] Creating/refreshing Engine 'internal' domain database schema
[ ERROR ] Failed to execute stage 'Misc configuration': Command '/usr/share/ovirt-engine-extension-aaa-jdbc/dbscripts/schema.sh' failed to execute
[ INFO ] Yum Performing yum transaction rollback
[ INFO ] Rolling back database schema
[ INFO ] Clearing Engine database engine
[ INFO ] Restoring Engine database engine
[ INFO ] Restoring file '/var/lib/ovirt-engine/backups/engine-20160708135630.DQXLX8.dump' to database ovirtdb01dev:engine.
[ ERROR ] Errors while restoring engine database, please check the log file for details
[ INFO ] Stage: Clean up
Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20160708135418-gjf4x1.log
[ INFO ] Generating answer file '/var/lib/ovirt-engine/setup/answers/20160708135800-setup.conf'
[ INFO ] Stage: Pre-termination
[ INFO ] Stage: Termination
[ ERROR ] Execution of setup failed
Or is there already some guide to migrate your ovirtmgmt server on centos6 --> centos7 ?