librbd-dev 15.2.17-0ubuntu0.20.04.4 (amd64 binary) in ubuntu focal

 RBD is a block device striped across multiple distributed objects
 in RADOS, a reliable, autonomic distributed object storage cluster
 developed as part of the Ceph distributed storage system. This is a
 shared library allowing applications to manage these block devices.
 .
 This package contains development files needed for building applications that
 link against librbd1.