[CentOS7]umount: /mnt/iscsi: target is busy.

# 正常卸载报错
[root@DB1 ~]# umount /mnt/iscsi 
umount: /mnt/iscsi: target is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))

# 强制卸载报错
[root@DB1 ~]# umount /mnt/iscsi -f 
umount: /mnt/iscsi: target is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))

# fuer删除
fuser -m -k /mnt/iscsi
umount /mnt/iscsi 

END