Как остановить размонтирование всех, когда я выхожу из сеанса ssh? [закрыто]

Итак, когда я вошел в Lucid через ssh и набрал exit , чтобы завершить сеанс, система сначала запустит umount -a . I см. следующее сообщение перед выходом из системы:

umount: /home: device is busy.
    (In some cases useful info about processes that use
     the device is found by lsof(8) or fuser(1))<p>
umount: /var/run: device is busy.
    (In some cases useful info about processes that use
     the device is found by lsof(8) or fuser(1))<p>
umount: /dev/shm: device is busy.
    (In some cases useful info about processes that use
     the device is found by lsof(8) or fuser(1))<p>
umount: /dev: device is busy.
    (In some cases useful info about processes that use
     the device is found by lsof(8) or fuser(1))<p>
umount: /: device is busy.
    (In some cases useful info about processes that use
     the device is found by lsof(8) or fuser(1))<p>

Как я могу это остановить?