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 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk 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 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000Disk /dev/mapper/VolGroup-lv_swap: 855 MB, 855638016 bytes255 heads, 63 sectors/track, 104 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk 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/sdaWARNING: 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): nCommand 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_dc01lvm>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