Skip to main content
NetApp Knowledge Base

OpenStack: Does Cinder volume with NFS driver support space reclaimation?

  1. Last updated
  2. Save as PDF
Views:
603
Visibility:
Public
Votes:
7
Category:
openstack
Specialty:
core
Last Updated:

Applies to

  • OpenStack Cinder volume driver

Answer

No.

A Cinder volume corresponds to a file within the NFS share provided by a FlexVol. The space is consumed when you write actual data in the Cinder volume.

ONTAP is not able to read the filesystem within the Cinder volume to tell if a block is in use or not, so removing a file inside the Cinder volume won't free space. Only when you delete the Cinder volume, the corresponding file within the NFS share will be deleted, and the space will be reclaimed.

Additional Information

additionalInformation_text

 

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.