sgdisk 磁盤操作指令

劃分磁盤分區

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​sgdisk -n 1:+2G:+50G /dev/sda​

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劃分磁盤分區，一号分區劃分為50G，同時預留2G的空間

磁盤格式化

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​sgdisk -z -og /dev/sda​

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檢視分區詳情

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​sgdisk -i 1 /dev/hda​

​檢視hda第一分區的詳情資訊

[root@node3 ~]# sgdisk -i 1 /dev/sdb
Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D (Unknown)
Partition unique GUID: 3A913191-07B4-4629-A2BD-E5016547BFF8
First sector: 4194304 (at 2.0 GiB)
Last sector: 4399137 (at 2.1 GiB)
Partition size: 204834 sectors (100.0 MiB)
Attribute flags: 0000000000000000
Partition name: 'ceph data osd.178'      

檢視磁盤分區數量

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​sgdisk -p /dev/hdb​

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[root@node2 ~]# sgdisk -p /dev/hdb
Disk /dev/hdb: 468862128 sectors, 223.6 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 2B4A5E9E-A941-4B21-AE3D-0506FE8F6DFC
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 468862094
Partitions will be aligned on 2048-sector boundaries
Total free space is 5399491 sectors (2.6 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1         4194304       375390241   177.0 GiB   FFFF  ceph data osd.0
   2       375392256       417333281   20.0 GiB    FFFF  
   3       417335296       421527585   2.0 GiB     FFFF  
   4       421529600       463470625   20.0 GiB    FFFF  
   5       463472640       467664929   2.0 GiB     FFFF      

修改分區的type code（partition guid code）

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​sgdisk -t 1:4fbd7e29-9d25-41b8-afd0-062c0ceff05d /dev/hda​

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修改分區名

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​sgdisk -c 1:"ceph data" /dev/hda​

​修改hda第一分區的分區名為"ceph data"

清除分區資料

删除分區