[ceph-users] Zero Reclaim/Trim on RBD image

Hi Friends, We have multiple RBD images/devices. We used fstrim to reclaim space on XFS filesystem on RBD images and it works great. Some of the RBD images, we share as block devices to Vmware using SCST. Any suggestion on how to reclaim space on these devices? The images are about 20TB but showing as 100TB used inside ceph pool. Thanks, -Vikas