Network and Storage Protocols

Deleted FlexVol, aggregate won't release the space

petermiet
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I have an aggregate on a FAS2050 running OnTap 7.3.2 with several 1TB FlexVols on it, and on Friday I deleted one of them to re-create it during some troubleshooting but didn't see the space available. I figured it must have had to process and release (our array is SATA) so I let it go over the weekend and still no additional space freed. Running "aggr show_space" makes me believe that the space is sitting still in WAFL reserve:

Aggregate                       Allocated            Used           Avail

Total space                  9024035984KB    2521786544KB     348701216KB

Snap reserve                          0KB             0KB             0KB

WAFL reserve                 1041451312KB      99056988KB     942394324KB

That's almost 900GB available in reserve! I searched and found suggestions of it being tied up in snapshots or snapshot reserve, but this aggregate has none. I've also been watching "df -Ak" for a while and the numbers to appear to be fluctuating but not by much. Is it really possible that deleting an empty volume can take 3+ days for the space to be returned or is there something else going on?

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