如何在Linux操作系统中使用parted分区---gpt

一、实验环境

VMware虚拟机
CentOS 7

二、需求分析

Linux系统一般是作为服务器的，分区采用LVM分区，之前LVM分区采用2TB的分区大小，现在硬盘越来越大，超过2TB的很常见。对于超过2TB的话，需要采用parted分区模式。

三、实验步骤

先在虚拟机中加一块大小为4096GB的硬盘，即为4TB
查看分区，分区为sdd

[root@localhost ~]# fdisk -l     //查看一下分区信息
......
磁盘 /dev/sdd：4398.0 GB, 4398046511104 字节，8589934592 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节

进入/dev/sdd
使用help命令，相当于MBR中的m，帮助指令

[root@localhost ~]# parted /dev/sdd
GNU Parted 3.1
使用 /dev/sdd
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) help                                                             
  align-check TYPE N                        check partition N for TYPE(min|opt) alignment
  help [COMMAND]                           print general help, or help on COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table, available devices, free
        space, all found partitions, or a particular partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START and END
  
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and copyright information
        of GNU Parted

创建新的分区表，一般用gpt类型
创建新分区大小：起始容量0T、结束容量1T，大小为1T

(parted) mklabel gpt                                                      
(parted) mkpart primary 0 1T                                              
警告: The resulting partition is not properly aligned for best performance.
忽略/Ignore/放弃/Cancel?
忽略/Ignore/放弃/Cancel? ignore 

再创建一个大小为2T的分区
p命令显示分区信息

(parted) mkpart primary 1T 3T
(parted) p                                                                
Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdd: 4398GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name     标志
 1      17.4kB  1000GB  1000GB               primary
 2      1000GB  3000GB  2000GB               primary

使用rm命令可以删除分区

(parted) rm                                                               
分区编号？ 2                                                              
(parted) p                                                                
Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdd: 4398GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name     标志
 1      17.4kB  1000GB  1000GB               primary

quit命令为退出

(parted) quit
信息: You may need to update /etc/fstab.

parted分区完后，就可以用fdisk命令进行划分了