Hello, I stumbled across the following bug when upgrading the ovirt engine from 4.2.4 to 4.2.5 (snippet from upgrade log): Running upgrade sql script '/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql'... 2018-08-02 09:14:33,116+0200 DEBUG otopi.plugins.ovirt_engine_setup.ovirt_engine.db.schema plugin.execute:926 execute-output: ['/usr/share/ovirt-engine/dbscripts/schema.sh', '-s', 'localhost', '-p', '5432', '-u' , 'engine', '-d', 'engine', '-l', '/var/log/ovirt-engine/setup/ovirt-engine-setup-20180802091038-xclfnu.log', '-c', 'apply'] stderr: psql:/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql:1: ERROR: insert or update on table "image_transfers" violates foreign key constraint "fk_image_transfers_command _enitites" DETAIL: Key (command_id)=(312f711f-a5c3-477d-8533-82ef88a54b77) is not present in table "command_entities". FATAL: Cannot execute sql command: --file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql 2018-08-02 09:14:33,117+0200 ERROR otopi.plugins.ovirt_engine_setup.ovirt_engine.db.schema schema._misc:434 schema.sh: FATAL: Cannot execute sql command: --file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_12 10_add_foreign_key_to_image_transfers.sql 2018-08-02 09:14:33,119+0200 DEBUG otopi.context context._executeMethod:143 method exception Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/otopi/context.py", line 133, in _executeMethod method['method']() File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/db/schema.py", line 436, in _misc raise RuntimeError(_('Engine schema refresh failed')) RuntimeError: Engine schema refresh failed 2018-08-02 09:14:33,122+0200 ERROR otopi.context context._executeMethod:152 Failed to execute stage 'Misc configuration': Engine schema refresh failed Are there already instructions on how to deal with this error and does anyone know why this error occurs? Kind regards Jan