Applies to ONTAP 9 Trident RHEL SCSI UNMAP Issue Space reclamation has never occurred on storage since the time it was set up with Trident host There's a mismatch between the space on ontap and on tri...Applies to ONTAP 9 Trident RHEL SCSI UNMAP Issue Space reclamation has never occurred on storage since the time it was set up with Trident host There's a mismatch between the space on ontap and on trident after creating a lun and deleting data. luns are thin provisioned with space-allocation set to enabled. All the luns are created from the host.