Product Documentation

Reclaiming Freed Space

Oct 16, 2015

The Reclaim freed space option in XenCenter enables you to free up unused blocks (for example, deleted virtual disks in an SR) on a LUN that is thinly provisioned by the storage array. Once released, the reclaimed space can then be reused by the array. The Reclaim freed space operation is only available for LVM-based SRs that are thinly provisioned on the array (that is, iSCSI, Fibre Channel, or Local LVM). This feature is not enabled on file-based SRs such as NFS and Ext3 as these SR types do not require a manual space reclamation operation.

To reclaim freed space:

  1. Select the Infrastructure view and then click on the host or the pool that contains the SR.
  2. Click on the Storage tab.
  3. Select the SR from the list and then click Reclaim freed space. Note: Reclaiming freed space is an intensive operation and can affect the performance of the storage array. You should perform this operation only when space reclamation is required on the array. Citrix recommends that you schedule this work outside the peak array demand hours.
  4. Click Yes to confirm the operation. To view the status of this operation, click Notifications and then Events.