Upgrading from TrueNAS Core to Scale - ZVol provisioning setting not preserved

TrueNAS General
1

I followed the recommended steps to upgrade from CORE 13 to SCALE (Dragonfish). It was almost flawless, but for one thing: I had created ZVols for each of my PCs and I had configured them as Thin provisioned, but after upgrading to SCALE it has configured them all as Thick provisioned. Therefore my NAS available space has dramatically reduced.

Is there a way to change this provisioning from Thick to Thin again?
(I am expecting the answer to be no, but I have to at least ask).

2

That’s strange as I think that’s a pool property and it really shouldn’t have changed :-/

3

I thought so too. It’s not a big deal for me as I can delete and recreate (haven’t used them yet), but I thought it was important to point this out.

4

zfs inherit -S refreservation pool/path/to/zvol