Did you have data from an old ZFS pool that you are trying to use in Rocky/Houston? Or are you starting the pool from scratch after the Rocky install? If you had an existing pool on the disks, did you “export” it before fiddling with the OS, and did you “import” it to get it into Rocky?
This isn’t exactly your issue, but maybe installing the cockpit-storage module (it might be cockpit-storaged) would help;
Hopefully someone more versed in Houston than me can help.