TrueNAS shows incorrect space usage

One Truenas storage unit is showing all partitions nearly full, and I know it aint so.
They are 21TB partitions showng 96% full.
XOA shows the same partitions at 7-10%. Is there some ZFS magic I need to do to refresh its vision?

What are you using for the SR? NFS or iSCSI?

If you are using iSCSI thick provisioned it will show used like that.

Those pa


rtitions are NFS

It looks like ZFS pool upgrade is needed, is that risky?

ZFS upgrades are typically safe. I’ve done it truenas without issues.

That fixed it, I tested on a pool, now showing correct usage. Thanks

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