On Wed, Jul 27, 2022 at 05:52:47PM +0900, Shin'ichiro Kawasaki wrote: > After the commit "common/rc: avoid module load in _have_driver()", > _have_driver() no longer loads specified module. However, nbd test cases > and _have_nbd_netlink() function assume that the module is loaded by > calling _have_driver(). This causes test case failures and unexpected > skips. To fix them, load and unload modules explicitly in functions > _start_nbd_server*(), _stop_nbd_server*() and _have_nbd_netlink(). Did you test this with built-in nbd?