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Available space is reported lesser than expected for a thin provisioned volume

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Category:
ontap-9
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core
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Applies to

  • ONTAP 9
  • Thin provisioned volumes

Issue

  • It is normally expected that the volume available size =  total size - used size.
  • However, for a thin provisioned volume sometimes the available size is reported < total size - used size.

cluster1::> df -h vol1
Filesystem    total    used    avail    capacity    Mounted on    Vserver
/vol/vol1/    972GB   200GB    524GB    20%         /vol1         svm1

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