[Starlingx-discuss] compute node: lvg without pv ?

hi, i have been working on the installation of a starlingX openstack cluster for a few days. now i'm almost at the end of the installation guide and fail due to the connection between nova and ceph :( since my compute nodes only have one HDD (hardware raid1 with 2x SSD) i can't add another HDD (pv) to the lvg. is there a way to work directly on the ceph storage without having to go through a local hard drive?