/usr分区磁盘扩容

操作系统版本Centos6.4 2.6.32-358.el6.x86_64
1，fdisk /dev/sda

添加新分区/dev/sda6

2，格式化磁盘

mkfs -t ext4 /dev/sda6

mkdir /dev/sda6 /mnt/usr

cp -a /usr/* /mnt/usr

3,重新挂载到/usr分区下

umount /dev/sda6

mount /dev/sda6 /usr

4,查看/usr[root@wang usr]# ls -lh

total 20K

drwx------   2 root root  16K Mar  4 18:42 lost+found

drwxr-xr-x. 14 root root 4.0K Dec 24 09:20 usr

cd /usr

rmdir lost+found

mv usr/* .

rmdir usr

5,开机启动
vi /etc/fstab
/dev/sda6                                 /usr                    ext4    defaults        1 2

即可