nvme-lnvm-init man page

nvme lnvm-init [--device-name=<DEVICE> | -d <DEVICE>]
                        [--mediamgr-name | -m]

Initialize LightNVM device. A LightNVM/Open-Channel SSD must have a media manager associated before it can be exposed to the user. The default is to initialize the general media manager on top of the device.

--device-name=<DEVICE>, -d <DEVICE>

Device name to initialize.

--mediamgr-name=<MediaMgr>, -m <MediaMgr>

Media Manager name to use for initialization.

# nvme lnvm-init -d nvme0n1

# nvme lnvm-init -d nvme0n1 -m gennvm

Part of the nvme-user suite