Ceph » ceph-volume

Hi

I'm use a gentoo with no systemd.
If I run ceph-volume lvm activate --all --no-systemd, I got this:

--> Absolute path not found for executable: systemctl
--> Ensure $PATH environment variable contains common executable locations
Traceback (most recent call last):
  File "/usr/sbin/ceph-volume", line 6, in <module>
    main.Volume()
  File "/usr/lib64/python3.5/site-packages/ceph_volume/main.py", line 37, in __init__
    self.main(self.argv)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/decorators.py", line 59, in newfunc
    return f(*a, **kw)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/main.py", line 153, in main
    terminal.dispatch(self.mapper, subcommand_args)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/terminal.py", line 182, in dispatch
    instance.main()
  File "/usr/lib64/python3.5/site-packages/ceph_volume/devices/lvm/main.py", line 38, in main
    terminal.dispatch(self.mapper, self.argv)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/terminal.py", line 182, in dispatch
    instance.main()
  File "/usr/lib64/python3.5/site-packages/ceph_volume/devices/lvm/activate.py", line 316, in main
    self.activate_all(args)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/decorators.py", line 16, in is_root
    return func(*a, **kw)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/devices/lvm/activate.py", line 203, in activate_all
    if systemctl.osd_is_active(osd_id):
  File "/usr/lib64/python3.5/site-packages/ceph_volume/systemd/systemctl.py", line 52, in osd_is_active
    return is_active(osd_unit % id_)
  File "/usr/lib64/python3.5/site-packages/ceph_volume/systemd/systemctl.py", line 30, in is_active
    verbose_on_failure=False
  File "/usr/lib64/python3.5/site-packages/ceph_volume/process.py", line 197, in call
    **kw
  File "/usr/lib64/python3.5/subprocess.py", line 676, in __init__
    restore_signals, start_new_session)
  File "/usr/lib64/python3.5/subprocess.py", line 1289, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'systemctl'