Hello again, Having just tried to add additional hard drives to our production Ceph cluster (i.e. not the one currently experiencing problems with misplaced PGs), I have been forcibly reminded of the "orch puts OSD block.db and data on the same device" orchestrator bug in Squid and Tentacle. With the relevant ticket having only reached "pending backport" stage 2 days ago, I figured I would just follow the workaround of assembling the new OSDs by hand rather than wait for whichever Tentacle patch release ends up incorporating the fix. There is, however, a snag - turns out the orchestrator has already allocated all the space on the DB SSDs to existing OSDs! Is it possible to manually shrink block.db LVs so that I can fit another one of them in? Having had a cursory look at documentation, seems one can use ceph-bluestore-tool to _extend_ OSD storage - but have yet to see any mention of the possibility of shrinking it. Thanks in advance. -- MS