[ceph-users] Add OSD with primary on HDD, WAL and DB on SSD

Hi, I am able to add OSD with primary on HDD, WAL and DB on SSD on dashboard. LVs are created on SSD for OSDs. How can I achieve the same by CLI? I tried with drivegroups, which adds OSD, but not WAL and DB. Should I handle LV for WAL and DB separately? Anything I am missing here? Thanks! Tony