Further investigations showed that this problem could have been caused by old LVM data on the disks.
I wiped out the 3 DASD disks (using 'dasdfmt --quick'), restarted the installation and it completed successfully.
With that I reduce the severity to high.
(attaching the logs for the successful install, after having wiped out the disks, just for the reason of completeness)
Further investigations showed that this problem could have been caused by old LVM data on the disks.
I wiped out the 3 DASD disks (using 'dasdfmt --quick'), restarted the installation and it completed successfully.
With that I reduce the severity to high.
(attaching the logs for the successful install, after having wiped out the disks, just for the reason of completeness)