RDMA Network Block Device driver server

modulename: rnbd-server.ko

configname: CONFIG_BLK_DEV_RNBD_SERVER

Linux Kernel Configuration
└─>Device Drivers
└─>Block devices
└─>RDMA Network Block Device driver server
In linux kernel since version 5.1 (release Date: 2019-05-05)  
RNBD server is the server side of RNBD using rdma transport.

RNBD server allows for exporting local block devices to a remote client
over RTRS protocol.

If unsure, say N.

source code:
drivers/block//rnbd/