Hello,
If there are Disk Uploads that have not completed (i.e: currently Paused or with Error)
and were not canceled the upgrade will fail.This is due to a foreign key being added on
4.2.5, relating image_transfers table to command_entities table.
When the roll-back to the previous RHV-M version finishes, open the Administration Portal
and navigate to Storage -> Disks.
Browse all disks looking for disks with status different than OK, such as Paused by
System. Right click and cancel/remove these failed or paused uploads, then try the upgrade
again.
If it fails then share your observations with us, so we need to do some manual changes in
database.
Regards,
Vaibhav Pagar