Hi, I've been using pg-upmap items both in the ceph balancer and by hand running osdmaptool for a while now (on Ceph 12.2.13). But I've noticed a side effect of up-map-items which can sometimes lead to some unnecessary data movement. My understanding is that the ceph osdmap keeps track of upmap-items that I undo (in my case using the CERN scrip upmap-remapped.py). These can be seen in the osdmap (or osd dump) json output. It looks, for example, like this: "pg_upmap_items": [ { "pgid": "9.10", "mappings": [ { "from": 1761, "to": 6 } ] }, When upmapping pg 9.10 I first need to clear this pg_upmap_item by executing an rm-upmap-item command: ceph rm-pg-upmap-items 9.10 All this does is unmap the from/to osds (here from osd.6 to osd.1761) which is sometimes not useful. I would prefer to rather "forget" this upmap. I.e remove it permanently from pg_upmap_items. Is there any way to do this? Cheers, Toms