I have a thinly provisioned LUN from my FAS2552 to a Windows Server 2019, with hyper-V role installed.
On the server, it shows that the free space is 246GB. However on the storage, we have about 178GB left.
I have run the commands on the Storage SSH to fix this. (I disabled and enabled the space-allocation feature)
ONTAP version is 9.5P17.
Please help me with suggestions to fix this anomaly.
Did you check this KB?
It does not list 2019, but I guess is just out dated.
Also, when setting space-allocation, are you putting the LUN offline and re-discovering it?
Yes. I set the LUN to be offline before running the command
To confirm if after enabling space allocation , you can check if the counters related to space reclamation operations at the hosts incremented in the target
These counters are in the lun object
e.g statistics show -object lun -instance <lun path> -raw -counter *unmap*
(space reclamation sends scsi unmap commands to the target and scsi unmap requests is expected to increment the above counter)
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