We have enabled both options discard-after delete and wipe after delete but nothing is working , I have tried to creating small disk ( like 1 GB ). after deleting that disk space has reclaimed succsuuufully. Seems this happens for larger size disk On Mon, Jul 12, 2021 at 1:10 AM Nir Soffer <nsoffer@redhat.com> wrote:
On Sun, Jul 11, 2021 at 5:03 PM Ranesh Tharanga Perera <raneshtharanga@gmail.com> wrote:
I have attached 7TB disk ( pre allocated) for VM ( Redhat 8 ).. Due to
some space issue we have unattached disk from VM and deleted it.
Did you enable the "discard after delete" option in the storage domain advanced options?
If you did not, the logical volume is deleted, but the blocks allocated on the server side from this logical volume are not discarded.
Since you deleted the logical volume, it is not possible to discard it now, but you do this:
Try this: - Put the storage domain to maintenance - Enable "discard-after delete" - Active the storage domain - Create new raw preallocated disk filling the entire domain - Delete the disk
Nir