It might depend on a few things. I'd make sure you're on 8.2.5P1 (or is P2 out?) and start there. If you can't get it after that let's get a support case open so we can review your system individually. There probably is something simple but I'd have to look at an ASUP to have a better idea.
The strange thing is that I have done the UNMAP procedure successfully on other vmfs datastores that are residing on this same Netapp storage. So, I think that it is not operating system Data ONTAP related isn't it ?
Regarding opening the case it is not possible for the moment since the end-customer has not renewed the Netapp storage system support yet :((
We run a CDOT Release 8.3.2P3 and we'd like to enable space reclamation on the 4 online production LUNs.
Vsphere 6.5 is already configured for Space Reclamation (PriorityLow: Deleted or unmapped blocks are reclaimed on the LUN at low priority), but as i understand, this is not working on the NetAPP side due to space-allocation disabled.
Does CDOT version support enabling space-allocation on online LUN?
Hello Paul, thanks for reply. Prior to made any modification on the system i just wanted to be sure about the results. I had read the KB, and i've also picked up the Clustered Data ONTAP® 8.3 SAN Administration Guide (update 8.3.2, that is exactly our version). And now i'm a bit confused: on page 41, "Enabling space allocation for SCSI thinly provisioned LUNs", the documentation clearly says for step 1 to "Take the LUN offline". I fear that enabling space-allocation on an online LUN, even for CDOT series, still seems to be uncharted territory. Can you give us a feedback about that? Thak you very much