linux: mount and umount 简单使用学习

                                                                     mount and umount 的使用小计

挂载一个iso 镜像：

mkdir  /media/oel

mount /dev/cdrom /media/oel

卸载镜像：

umonut  /media/oel

补充：umount提示说device busy是因为当前有程序正在使用你所卸载的设备

举个例子：你当前的路径可能就在设备的挂载点，可以使用
fuser -km /dev/sdb1(设备名) 杀掉占用此设备的程序方可卸载

FYI“：

[root@oracle11g /]# mount /dev/cdrom /media

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@oracle11g /]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      14220336  12285584   1200752  92% /
/dev/sda1               101086     22569     73298  24% /boot
tmpfs                   219412         0    219412   0% /dev/shm
/dev/sr0               3592530   3592530         0 100% /media

[root@oracle11g /]#

[root@oracle11g repodata]# umount /media
umount: /media: device is busy
umount: /media: device is busy

[root@oracle11g repodata]# pwd
/media/repodata
[root@oracle11g repodata]#

[root@oracle11g media]# cd ..
[root@oracle11g /]# pwd
/
[root@oracle11g /]# umount /media

[root@oracle11g /]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      14220336  12285584   1200752  92% /
/dev/sda1               101086     22569     73298  24% /boot
tmpfs                   219412         0    219412   0% /dev/shm

[root@oracle11g /]#