现在有一块12T的磁盘，需要分成三个区作为OpenStack的存储目录，分别为：
- /dev/sda1（6T）：作为Nova实例存放目录/var/lib/nova/instances
- /dev/sda2（4T）：存放Cinder数据卷存放分区
- /dev/sda3（2T）：作为Swift对象存储使用分区
操作方法：
[root@openstack-controller ~]# parted /dev/sda ...... (parted) mklabel gpt # 更改为pgt分区 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 # 打印分区信息 Model: AVAGO MR9361-8i (scsi) Disk /dev/sda: 12.0TB Sector size (logical/physical): 512B/512B Partition Table: gpt # 确认为gpt Disk Flags: Number Start End Size File system Name Flags (parted) mkpart primary 0 6TB # 创建6TB分区 Warning: The resulting partition is not properly aligned for best performance. Ignore/Cancel? i (parted) mkpart primary 6TB 10TB # 创建4TB分区 (parted) mkpart primary 10TB 12TB # 创建2TB分区 (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 # 验证
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
...