Ceph

We are running with luminous 12.2.13 version in a production environment with 3 nodes. We were trying to restore a volume from HP nimble storage to 3 nodes ceph cluster. Volume got created and we were trying to delete these restored volumes because it failed to attach to virtual machine running in openstack. But volumes got deleted with RBD images as well BUT issue is space didn't got freed up in ceph or ceph didn't reclaimed that space which caused OSD to reach at 90% storage which is risky to run under production environment.

We observed that ceph snaptrim ran after we removed volumes but got ended within few min which has catches our attention since we have removed almost 14-15TB of volumes.

Please help us if anybody knows about this issue or how to resolve since it's running under production