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Composite total capacity is larger than the vol footprint report for bin1 tier usage

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Category:
ontap-9
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core
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Applies to

  • ONTAP 9
  • FabricPool

Issue

The summed values for volume footprints in BIN1 are smaller than what can be seen in aggregate and in Azure. 
 
Example:
  • Aggregate Blob total:

aggr show-space aggr01

Aggregate : aggr01
Object Store: aggr01_blob
Feature                          Used       Used%
-------------------------------- ---------- ------
Referenced Capacity                  7.90TB      -
Metadata                                 0B      -
Unreclaimed Space                    4.13TB      -

Total Physical Used                 12.03TB      -

  • Composite-capacity-tier-used:

aggr show -fields physical-used, composite-capacity-tier-used -aggregate aggr01

aggregate    physical-used composite-capacity-tier-used
------------ ------------- ----------------------------
aggr01            169.19TB                      12.03TB

  • With the command df -A: 

df -A -composite aggr01

Aggregate          Store kbytes        used   avail
aggr01       aggr01_blob      - 12925697350       -

The total is therefore of 12.038 TB – taking into account the conversion.
 
All values are the same.

However if we manually do the sum of the values for volume-blocks-footprint-bin1 getting returned while running volume show-footprint, we get a smaller value. 

 

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