挂载硬盘
最近有个项目使用weblogic构建，经常出现空间不够的情况，后面实在被折磨的
，重新拿了一块比较大的硬盘挂载的centos系统中，并且将项目全部都迁移到挂载的分区中才得以解决此问题，这里是操作的记录，留存一份，以便查阅~
使用fdisk -l开查看但钱状态下磁盘情况
$ fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00085a0c
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 41943039 20458496 8e Linux LVM
# 注意看这里：这个就是新的硬盘
# 记下/dev/sdb这个名称
Disk /dev/sdb: 1073 MB, 1073741824 bytes, 2097152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-root: 18.8 GB, 18756927488 bytes, 36634624 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
# 使用过fdisk /dev/sdb来进行分区操作
$ fdisk /dev/sdb
# Command (m for help): n //输入N表示新建一个分区
# Command (m for help): w //保存分区
再次fdisk -l查看信息
$ fdisk -l
用mkfs.ext3格式化新分区
$ mkfs.ext3 /dev/sdb
挂载使用
$ mkdir /mnt/hdb1 //新建一个挂载点。
$ mount /dev/sdb /mnt/hdb1 //挂载。
$ df -h
开机自动挂载
在vi /etc/fstab中添加新硬盘的挂载信息，添加下面一行:
/dev/hdb1 /mnt/hdb1 ext3 defaults 1 2（如果还有一个分区就是1 3，以此类推)
这样,每次开机后,系统会自动将/dev/hdb1挂载到/mnt/hdb1
#
# /etc/fstab
# Created by anaconda on Tue May 10 23:34:03 2016
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=d54493d2-18fd-4e43-b425-45dd790bdeaf /boot xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
参考资料：
CentOS下添加新硬盘并分区格式化的详细步骤