umount 磁盘出现 device is busy

执行umount 命令的时候出现 device is busy ，有人在使用这块磁盘

umount /dev/sde1

umount: /u01/app/oracle: device is busy

使用fuser 命令查看哪个进程在使用

# fuser -m /u01/app/oracle/

/u01/app/oracle/: 2636c 2694c

# ps aux | grep 2636

root 2636 0.0 0.2 4532 1464 pts/1 S 09:56 0:00 bash

root 2776 0.0 0.1 3916 696 pts/1 R+ 10:18 0:00 grep 2636

kill -9 干掉进程

# kill -9 2636

# umount /dev/sde1