1
umount /mnt/
2
umount: /mnt/: device is busy.
3
(In some cases useful info about processes that use
4
the device is found by lsof(8) or fuser(1))

1
[root@localhost ~]# lsof |grep /mnt/
2
lsof: WARNING: can't stat() cifs file system /mnt/
3
Output information may be incomplete.
4
bash 18841 root cwd unknown /mnt/TDDOWNLOAD/软件 (stat: No such device)

1
[root@localhost ~]# ps -ef|grep 18841
2
root 18841 18839 0 Nov29 pts/2 00:00:00 /bin/bash -l
3
root 29496 25604 0 16:26 pts/0 00:00:00 grep 18841

1
[root@localhost ~]# kill -9 18841

1
[root@localhost ~]# umount /mnt/net1