linux大于2T的磁盘使用GPT分区方式

操作步骤：
1：修改分区表类型
[root@localhost ~]# parted /dev/sdb mklabel gpt
Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost. Do you
want to continue?
parted: invalid token: gpt
Yes/No? yes
New disk label type?  [msdos]? gpt
Information: Don't forget to update /etc/fstab, if necessary. （不是错误）
2：查看修改结果
[root@localhost ~]# parted /dev/sdb print
Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdb: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
3：创建与删除分区
（1）命令格式：
parted {磁盘}  mkpart  分区类型  文件系统格式   开始  结束
分区类型：primary logical  extended
文件系统：ext2 ext3  swap
注：ext4文件系统不支持（操作环境：CentOS5.5）
[root@localhost ~]# parted /dev/sdb mkpart primary ext3 1 2G
（2）查看分区表信息：
[root@localhost ~]# parted /dev/sdb print

Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdb: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start       End         Size               File system    Name     Flags
1         17.4kB  2000MB  2000MB               primary
（3）删除分区
[root@localhost ~]# parted /dev/sdb rm 1
4：格式化挂在文件系统
如果出现：-bash: mkfs.ext4: command not found
安装：yum -y install e4fsprogs
[root@localhost ~]# mkfs.ext4 /dev/sdb1
mke4fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
122160 inodes, 488277 blocks
24413 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=503316480
15 block groups
32768 blocks per group, 32768 fragments per group
8144 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 36 mounts or
180 days, whichever comes first.  Use tune4fs -c or -i to override.
5：挂载
[root@localhost ~]# mkdir /data1
[root@localhost ~]# mount /dev/sdb1 /data1
[root@localhost ~]# mount
/dev/sda2 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
none on /proc/fs/vmblock/mountPoint type vmblock (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/sdb1 on /data1 type ext4 (rw)
6：修改系统文件，开机自动挂载
[root@localhost ~]# vi /etc/fstab
/dev/sdb1               /data1   　　 ext4    defaults        0 0

以上分区过程可以简化为以下几步：

* parted /dev/sda mkpart primary ext4 1 2G
* parted /dev/sda print
* reboot(重启)
* mkfs.ext4 /dev/sda1
* 创建挂在点:mkdir /opt/data1
* 写入/etc/fstab中：/dev/sda1  /opt/data1    ext4    defaults        0 0
* 挂载：mount -a