umount: /var: device is busy

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去掉挂载显示device is busy

出现此问题是当前挂载点上面有进程存在

[root@zabbix ~]# umount /dev/mapper/vg_zabbix-LogVol02umount: /var: device is busy.        (In some cases useful info about processes that use         the device is found by lsof(8) or fuser(1))

解决：

使用下面名查看挂载点上面运行的进程，然后停掉，操作如下：

[root@zabbix ~]# fuser -m -v /dev/mapper/vg_zabbix-LogVol02                     USER        PID ACCESS COMMAND/dev/mapper/vg_zabbix-LogVol02:                     root       1534 F.... auditd                     root       1556 F.... rsyslogd                     root       2024 F.... crond

fuser -m –k /dev/mapper/vg_zabbix-LogVol02

注：上面是使用kill直接杀掉挂载点上面的进程，建议使用daemon的方式停掉进程。

[root@zabbix ~]# /etc/init.d/rsyslog stopShutting down system logger:                               [  OK  ][root@zabbix ~]# fuser -m -v /dev/mapper/vg_zabbix-LogVol02                     USER        PID ACCESS COMMAND/dev/mapper/vg_zabbix-LogVol02:                     root       1534 F.... auditd                     root       2024 F.... crond[root@zabbix ~]# /etc/init.d/crond stopStopping crond:                                            [  OK  ][root@zabbix ~]# /etc/init.d/auditd stopStopping auditd:                                           [  OK  ][root@zabbix ~]# fuser -m -v /dev/mapper/vg_zabbix-LogVol0Cannot stat /dev/mapper/vg_zabbix-LogVol0: No such file or directoryCannot stat /dev/mapper/vg_zabbix-LogVol0: No such file or directoryCannot stat /dev/mapper/vg_zabbix-LogVol0: No such file or directory

重新卸载

[root@zabbix ~]# umount /dev/mapper/vg_zabbix-LogVol02

参考链接：http://www.cnblogs.com/dkblog/archive/2012/07/18/2597192.html

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