这是一个ArchLinux盒子，我无法通过systemd.我必须另外发出cryptsetup close。这是错误配置还是错误？
/etc/crypttab:
myprivate /media/il/USBHDD/A_U_T_O_R_U_N/TrueCrypt/volume.tc none tcrypt,noauto
~/.xprofile:
systemd-gnome-ask-password-agent &
/etc/fstab
/dev/mapper/myprivate /media/il/myprivate auto noauto,x-systemd.automount,x-gvfs-hide 0 0
日记消息systemctl stop systemd-cryptsetup@myprivate：
il systemd[1]: Unmounting /media/il/myprivate...
il systemd[4862]: media-il-myprivate.mount: Succeeded.
il systemd[19968]: media-il-myprivate.mount: Succeeded.
il ntfs-3g[29489]: Unmounting /dev/mapper/myprivate (MYPRIVATE)
il systemd[1]: media-il-myprivate.mount: Succeeded.
il systemd[1]: Unmounted /media/il/myprivate.
命令：
[root@il ~]# systemctl stop systemd-cryptsetup@myprivate
[root@il ~]# umount /media/il/USBHDD
umount: /media/il/USBHDD: target is busy.
[root@il ~]# lsof | grep /media/il/USBHDD
[root@il ~]#
[root@il ~]# cryptsetup close myprivate
[root@il ~]# umount /media/il/USBHDD
[root@il ~]#