[ovirt-users] backup.sh fails

Hi all, I might be of a tangent but I tried to follow the steps in http://www.ovirt.org/User_talk:Stkeimond/Backing_Up_And_Restoring_OVirt for a backup. I get an error because of the postgres user password that I never set in the installation of oVirt (as far as I know.) Does anyone know of another way to backup or is this a bug/fault_by_me? The command line and error is: [root@dl380 dbscripts]# ./backup.sh -u postgres -l /mnt/msa60/backups/ Backup of database engine to /mnt/msa60/backups//engine_Mon_Jul_14_16:50:45_CEST_2014.sql started... pg_dump: [archiver (db)] connection to database "engine" failed: FATAL: Ident authentication failed for user "postgres" pg_dump: *** aborted because of error Backup of database engine failed.