![为什么不同命令的 uuid 和 ptuuid 不同](https://linux22.com/image/207131/%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E5%90%8C%E5%91%BD%E4%BB%A4%E7%9A%84%20uuid%20%E5%92%8C%20ptuuid%20%E4%B8%8D%E5%90%8C.png)
我在 Arch Linux 系统上得到了 3 个命令blkid
的以下结果lsblk
sfdisk
$ lsblk --json -p -b -o+PTUUID,UUID /dev/sda1
{
"blockdevices": [
{
"name": "/dev/sda1",
"maj:min": "8:1",
"rm": false,
"size": 535822336,
"ro": false,
"type": "part",
"mountpoints": [
null
],
"ptuuid": "772eba14-e67c-40d8-8ddd-2317d5a4156d",
"uuid": "6BCD-C870"
}
]
}
$ blkid /dev/sda1
/dev/sda1:
UUID="6BCD-C870"
BLOCK_SIZE="512"
TYPE="vfat"
PARTLABEL="primary"
PARTUUID="47948fda-bd1d-4dee-9d9a-ab0da02b08b2"
sfdisk --json /dev/sda
{
"partitiontable": {
"label": "gpt",
"id": "772EBA14-E67C-40D8-8DDD-2317D5A4156D",
"device": "/dev/sda",
"unit": "sectors",
"firstlba": 34,
"lastlba": 937701342,
"sectorsize": 512,
"partitions": [
{
"node": "/dev/sda1",
"start": 2048,
"size": 1046528,
"type": "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7",
"uuid": "47948FDA-BD1D-4DEE-9D9A-AB0DA02B08B2",
"name": "primary"
}
]
}
}
我主要对上面的输出的UUID
和感兴趣PTUUID
,命令之间似乎不匹配。
PTUUID UUID
lsblk 772eba14-e67c-40d8-8ddd-2317d5a4156d 6BCD-C870
blkid 47948fda-bd1d-4dee-9d9a-ab0da02b08b2 6BCD-C870
sfdisk 47948FDA-BD1D-4DEE-9D9A-AB0DA02B08B2
有人可以解释一下为什么它们不同,并且哪个可以信任(如果有的话)?