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VM下增加centos6.5磁盘容量

参考博文:http://www.cnblogs.com/sixiweb/p/3360008.html

编辑设置,修改硬盘大小

[root@localhost ~]# fdisk -l  #查看磁盘分区情况

Disk /dev/sda: 59.1 GB, 59055800320 bytes  #现有的磁盘容量
255 heads, 63 sectors/track, 7179 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000efc13

   Device Boot      Start         End      Blocks   Id  System  #现有磁盘的分配情况
/dev/sda1   *           1          64      512000   83  Linux    #主分区
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        1045     7875584   8e  Linux LVM  #扩展分区
/dev/sda3            1045        6527    44039519+  8e  Linux LVM  #扩展分区

Disk /dev/mapper/VolGroup-lv_root: 51.2 GB, 51229229056 bytes 
255 heads, 63 sectors/track, 6228 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/VolGroup-lv_swap: 855 MB, 855638016 bytes
255 heads, 63 sectors/track, 104 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

关闭VMWARE的linux系统,设置原有硬盘容量后开机。

#添加新分区,在原容量基础上加载新容量

[root@localhost ~]# fdisk /dev/sda
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
         switch off the mode (command 'c') and change display units to
         sectors (command 'u').
Command (m for help):

输入n,回车。新增一个分区


  Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)

输入P,回车 选择主分区

输入4,回车 选择分区4,因为上面查询到sda1,sda2,sda3都已经被使用

输入8e,回车  更改为lvm

输入w,回车  保存设置,然后重启电脑

开机后格式化刚才的新分区

  [root@localhost ~]#

#实现扩容

  [root@localhost ~]# lvm    #进入lvm模式
lvm> pvcreate /dev/sda3         这是初始化刚才的分区,必须的
lvm> vgextend VolGroup /dev/sda3   将初始化过的分区加入到虚拟卷组vg_dc01
lvm>lvextend -L +29.9G /dev/vg_dc01/lv_root  扩展已有卷的容量(29.9G这个数字在后面解释)
lvm>pvdisplay              查看卷容量,这时你会看到一个很大的卷了
lvm>quit                 退出



  [root@localhost ~]# resize2fs /dev/mapper/VolGroup-lv_root

再输入df -h 查看一下硬盘容量

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