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11.9. GPT

$ sudo parted /dev/sda
GNU Parted 2.3
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)
		

11.9.1. 設置GTP磁碟

(parted) mklabel gpt                                                      
Warning: The existing disk label on /dev/xvdb will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No? Yes			
			

11.9.2. 查看分區

(parted) print
Model: DELL PERC 6/i (scsi)
Disk /dev/sda: 2498GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name     Flags
 1      1049kB  50.0GB  50.0GB  ext4                     boot
 2      50.0GB  66.0GB  16.0GB  linux-swap(v1)
 3      66.0GB  2498GB  2432GB  ext4            /backup
			

空閒空間

(parted) print free
Model: DELL PERC 6/i (scsi)
Disk /dev/sda: 2498GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name     Flags
        17.4kB  1049kB  1031kB  Free Space
 1      1049kB  50.0GB  50.0GB  ext4                     boot
 2      50.0GB  66.0GB  16.0GB  linux-swap(v1)
 3      66.0GB  2498GB  2432GB  ext4            /backup
        2498GB  2498GB  1032kB  Free Space
			

11.9.3. 創建分區

創建主分區

(parted) mkpart primary
File system type?  [ext2]?                                                
Start? 0GB                                                                
End? 280GB                                                                
(parted) p                                                                
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 784GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End    Size   File system  Name     Flags
 1      1049kB  280GB  280GB               primary			
			

創建擴展分區

(parted) mkpart extended                                                 
File system type?  [ext2]?                                                
Start? 280GB                                                              
End? 100%                                                                 
(parted) p                                                                
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 784GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End    Size   File system  Name      Flags
 1      1049kB  280GB  280GB               primary
 2      280GB   784GB  504GB               extended			
			

創建分區

(parted) mkpart
Partition name?  []? /www
File system type?  [ext2]?
Start? 10GB
End? 50GB
			

例 11.2. GPT Example

(parted) print devices
/dev/sdb (9999GB)
/dev/sda (2498GB)

(parted) select /dev/sdb
Using /dev/sdb

(parted) 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?
Yes/No? yes

(parted) mkpart
Partition name?  []? /md1200
File system type?  [ext2]? ext4
Start? 0GB
End? 9999GB

(parted) print list
Model: DELL PERC H800 (scsi)
Disk /dev/sdb: 9999GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name     Flags
 1      1049kB  9999GB  9999GB               /md1200


Model: DELL PERC 6/i (scsi)
Disk /dev/sda: 2498GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name     Flags
 1      1049kB  50.0GB  50.0GB  ext4                     boot
 2      50.0GB  66.0GB  16.0GB  linux-swap(v1)
 3      66.0GB  2498GB  2432GB  ext4            /backup


(parted)
				

例 11.3. 創建擴展分區

查看可用空間

(parted) print free
Model: HP LOGICAL VOLUME (scsi)
Disk /dev/sda: 1200GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system     Flags
        32.3kB  1049kB  1016kB           Free Space
 1      1049kB  525MB   524MB   primary  ext4            boot
 2      525MB   105GB   105GB   primary  ext4
 3      105GB   139GB   33.6GB  primary  linux-swap(v1)
        139GB   1200GB  1061GB           Free Space
				

創建擴展分區

(parted) mkpart                                                           
Partition type?  primary/extended? extended                               
Start? 139GB                                                              
End? 1200GB                                                               
(parted) p                                                                
Model: HP LOGICAL VOLUME (scsi)
Disk /dev/sda: 1200GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  525MB   524MB   primary   ext4            boot
 2      525MB   105GB   105GB   primary   ext4
 3      105GB   139GB   33.6GB  primary   linux-swap(v1)
 4      139GB   1200GB  1061GB  extended                  lba				
				

創建邏輯卷

(parted) mkpart                                                           
Partition type?  [logical]? logical                                       
File system type?  [ext2]?                                                
Start? 139GB                                                              
End? 200GB                                                                
(parted) mkpart logical                                                   
File system type?  [ext2]?                                                
Start? 200GB                                                              
End? 1200GB                                                               
(parted) p                                                                
Model: HP LOGICAL VOLUME (scsi)
Disk /dev/sda: 1200GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  525MB   524MB   primary   ext4            boot
 2      525MB   105GB   105GB   primary   ext4
 3      105GB   139GB   33.6GB  primary   linux-swap(v1)
 4      139GB   1200GB  1061GB  extended                  lba
 5      139GB   200GB   61.1GB  logical
 6      200GB   1200GB  1000GB  logical
 
(parted) quit                                                             
Information: You may need to update /etc/fstab.
				

查看分區

# fdisk -l

Disk /dev/sda: 1199.9 GB, 1199865640960 bytes, 2343487580 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000c7511

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     1026047      512000   83  Linux
/dev/sda2         1026048   205826047   102400000   83  Linux
/dev/sda3       205826048   271362047    32768000   82  Linux swap / Solaris
/dev/sda4       271362048  2343487487  1036062720    f  W95 Ext'd (LBA)
/dev/sda5       271364096   390625279    59630592   83  Linux
/dev/sda6       390627328  2343487487   976430080   83  Linux				
				

11.9.4. 刪除分區

使用 rm 刪除分區

# parted /dev/xvdb
GNU Parted 2.1
Using /dev/xvdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 784GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
 1      32.3kB  4113MB  4113MB  primary  ext4
 2      4113MB  784GB   780GB   primary

(parted) rm
Partition number? 1

(parted) p
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 784GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End    Size   Type     File system  Flags
 2      4113MB  784GB  780GB  primary

(parted) rm 2
(parted) p
Model: Xen Virtual Block Device (xvd)
Disk /dev/xvdb: 784GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start  End  Size  Type  File system  Flags
			

刪除擴展分區將自動刪除邏輯卷

11.9.5. 退出

(parted) quit
			

11.9.6. mount

neo@backup:~$ sudo blkid
[sudo] password for neo:
/dev/sda1: UUID="2fc411ec-9f6e-4e04-9270-11d23a9b0668" TYPE="ext4"
/dev/sda2: UUID="f5175b7a-4c87-471c-ab9f-9d601bc5e6e2" TYPE="swap"
/dev/sda3: UUID="3217bdd9-1beb-494a-a428-8d1c09eaa1af" TYPE="ext4"

neo@backup:~$ sudo vim /etc/fstab
UUID=3217bdd9-1beb-494a-a428-8d1c09eaa1af /backup ext4 errors=remount-ro 0       1