卸载文件系统(默认600M容量）
[root@lvm ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_lvm-lv_roo 2.0G 557M 1.3G 30% / tmpfs 499M 0 499M 0% /dev/shm /dev/sda1 485M 40M 420M 9% /boot /dev/mapper/vg_lvm-lv_tes 591M 17M 545M 3% /test [root@lvm ~]# umount /test/ [root@lvm ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_lvm-lv_roo 2.0G 557M 1.3G 30% / tmpfs 499M 0 499M 0% /dev/shm /dev/sda1 485M 40M 420M 9% /boot [root@lvm ~]#