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Free space not returned to aggregate as expected

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Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

ONTAP 9

Issue

  • Free Space does not show on the aggregate after deleting a snapshot and is stuck in Delayed Frees.
  • High Delayed Frees count looking at volume footprint within aggregate, the value increases over time and never decreases. 

Note: This article only applies if Delayed Frees is 3% or higher.

cluster1::> volume show-footprint -vserver svm1 -volume volume_name
……
      Vserver : svm1
      Volume  : volume_name
 
      Feature                                          Used    Used%
      --------------------------------           ----------    -----
      Volume Data Footprint                         14.32TB      27%
      Volume Guarantee                                   0B       0%
      Flexible Volume Metadata                           0B       0%
      Deduplication                                 275.4GB       1%
      Delayed Frees                                 18.88TB      36%
 
      Total Footprint                               33.48TB      63%

 

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