Now I did another test and installed the same LPAR again, but now using a bunch of DASD disks for the root fs and just added the same existing FCP LUN this time to /space, proceeded with the installation, completed it, rebooted, and now can still find the initially created two test files (and for sure the entire old root file system now located at /space).
For details see attached file test2.txt.
Now I did another test and installed the same LPAR again, but now using a bunch of DASD disks for the root fs and just added the same existing FCP LUN this time to /space, proceeded with the installation, completed it, rebooted, and now can still find the initially created two test files (and for sure the entire old root file system now located at /space).
For details see attached file test2.txt.