shell> fdisk /dev/xvdb                               #### 选择磁盘

Command (m for help): m                              #### 帮助

Command action

   a   toggle a bootable flag

   b   edit bsd disklabel

   c   toggle the dos compatibility flag

   d   delete a partition

   l   list known partition types

   m   print this menu

   n   add a new partition

   o   create a new empty DOS partition table

   p   print the partition table

   q   quit without saving changes

   s   create a new empty Sun disklabel

   t   change a partition's system id

   u   change display/entry units

   v   verify the partition table

   w   write table to disk and exit

   x   extra functionality (experts only)

Command (m for help): n                               #### 创建新的分区

Command action

   e   extended

   p   primary partition (1-4)

p                                                     #### 创建主分区

Partition number (1-4):1                              #### 分区ID

First cylinder (1-65270, default 1):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-65270, default 65270):

Using default value 65270

Command (m for help):t                                #### 修改分区类型

Command (m for help):8e                               #### Linux lvm

Command (m for help):w                                #### 保存修改

shell> pvcreate /dev/xvdb1/                           #### 创建新的pv卷

shell> pvs                                            #### 查看pv卷

shell> vgcreate datavg /dev/xvdb1/                 	  #### 创建新的vg卷

shell> vgs                                            #### 查看vg卷

shell> lvcreate -L 50G -n lv1    datavg      		  #### 创建逻辑卷 -L 指定分区大小 -n 指定lvm名称

shell> mkfs.xfs /dev/datavg/lv1                       #### 使用mkfs.ext4命令在逻辑卷lvmServer上创建ext4文件系统

shell> mount /dev/datavg/lv1 /server/                 #### 挂在分区到本地目录/server

shell> vi /etc/fstab                                  #### 修改fstab 开机自动挂载

#

# /etc/fstab

# Created by anaconda on Thu Aug 14 21:16:42 2014

#

# 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

#

UUID=94e4e384-0ace-437f-bc96-057dd64f42ee / ext4 defaults,barrier=0 1 1

tmpfs                   /dev/shm                tmpfs   defaults        0 0

devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

sysfs                   /sys                    sysfs   defaults        0 0

proc                    /proc                   proc    defaults        0 0

/dev/datavg/lv1        /data                    xfs    defaults         0 0

:wq

#### 保存重启测试

注意：

* fstab一定要正确填写路径,一旦出错,可能无法正常启动.

* 可以在rc.local使用mount命令进行挂载

lvextend –L +2G /dev/datavg/lv1

对lv1进行在线(动态)扩容

e2fsck -f /dev/vg1/lv1           #检查磁盘错误 (ext4执行)

resize2fs /dev/vg1/lv1           #更新逻辑卷信息(ext4执行)

xfs_growfs /dev/vg1/lv1          #xfs文件系统需要执行