Dear Cepher， For some reasons, i had a cluster with several 20 TB pools and 100TB ones, which were previously linked with iSCSI for virtual machines. When deleting those big rbd images, it turns out to be extremely slow, taking hours if not days. The Ceph cluster is running on Luminous 12.2.13 with bluestore How to speed up removing big rbd pools? thanks, samuel huxiaoyu@horebdata.cn