現在有一塊12T的磁碟，需要分成三個區作為OpenStack的儲存目錄，分別為：

• /dev/sda1（6T）：作為Nova例項存放目錄/var/lib/nova/instances
• /dev/sda2（4T）：存放Cinder資料卷存放分割槽
• /dev/sda3（2T）：作為Swift物件儲存使用分割槽

操作方法：

[root@openstack-controller ~]# parted /dev/sda
......
(parted) mklabel gpt    # 更改為pgt分割槽
Warning: The existing disk label on /dev/sda will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes
 
/No? yes                                                               
(parted) print    # 列印分割槽資訊                                                        
Model: AVAGO MR9361-8i (scsi)
Disk /dev/sda: 12.0TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt    # 確認為gpt
Disk Flags: 

Number  Start  End  Size  File system  Name  Flags

(parted) mkpart primary 
 
0 6TB    # 建立6TB分割槽                                    
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? i                                                          
(parted) mkpart primary 6TB 10TB    # 建立4TB分割槽
(parted) mkpart primary 10TB 12TB    # 建立2TB分割槽
(parted) print                                                            
Model: AVAGO MR9361
 
-8i (scsi)
Disk /dev/sda: 12.0TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start    End      Size    File system  Name     Flags
 1      17.4kB   6000GB   6000GB               primary
 2      6000GB   10000GB  4000GB               primary
 3      10000GB  12.0TB   2001GB               primary
(parted) quit

[root@openstack-controller ~]# lsblk # 驗證
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 10.9T 0 disk
├─sda1 8:1 0 5.5T 0 part
├─sda2 8:2 0 3.7T 0 part
└─sda3 8:3 0 1.8T 0 part
...