[ovirt-users] Storage Domain with SAN LUN - Discard is not supported by underlying storage

I try to create a new block based storage domain with fibre channel luns, but i can't activate the "discard after delete" check. SAN is a HPE 3PAR, is there any option I have to take in the SAN? screenshot: https://diphoton.de/owncloud/index.php/s/ipLgGgZj38gizIv any ideas?