esxi下给Centos硬盘扩充空间

最近进行了测试系统的数据备份，结果备份文件超级大，超过了40G，把对应的/根目录给撑满了。

没办法，就想着给虚拟机进行磁盘扩容。

1、首先呢，当然是添加一个新磁盘，磁盘未添加的时候，只有/dev/sda

添加完新磁盘后，会出现/dev/sdb1

2、对新添加的sbd1进行如下操作

fdisk /dev/sdb
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x9ae5f58f.

Command (m for help): p

Disk /dev/sdb: 161.1 GB, 161061273600 bytes, 314572800 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: 0x9ae5f58f

Device Boot Start End Blocks Id System

Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-314572799, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-314572799, default 314572799):
Using default value 314572799
Partition 1 of type Linux and of size 150 GiB is set

Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'

Command (m for help): p

Device Boot Start End Blocks Id System
/dev/sdb1 2048 314572799 157285376 8e Linux LVM

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

3、然后进行pvdisplay查看，只有你原始磁盘的数据（/dev/sda）