$ bin/ceph orch reconfig nfs.foo
Error EINVAL: Traceback (most recent call last):
  File "/usr/share/ceph/mgr/mgr_module.py", line 1171, in _handle_command
    return self.handle_command(inbuf, cmd)
  File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 138, in handle_command
    return dispatch[cmd['prefix']].call(self, cmd, inbuf)
  File "/usr/share/ceph/mgr/mgr_module.py", line 311, in call
    return self.func(mgr, **kwargs)
  File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 100, in <lambda>
    wrapper_copy = lambda *l_args, **l_kwargs: wrapper(*l_args, **l_kwargs)
  File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 89, in wrapper
    return func(*args, **kwargs)
  File "/usr/share/ceph/mgr/orchestrator/module.py", line 1088, in _service_action
    raise_if_exception(completion)
  File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 658, in raise_if_exception
    raise e
rados.ObjectNotFound: [errno 2] RADOS object not found (RADOS object not found (error opening pool 'b'cephfs.a.dat''))