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什么是系统的 UUID 值以及如何更改它?

Solution In Progress - Updated -

Issue

  • 系统的 UUID 的含义是什么?

    • /sys/devices/virtual/dmi/id/product_uuid 文件值 (RHEL 6, 7, 8 9)
    • dmidecode 输出中的 UUID 字段值,

          Getting SMBIOS data from sysfs.
          :
          System Information
          Manufacturer: <VendorName>
          Product Name: <ModelName>
              Serial Number: <SerialNumber>      
          UUID: 12345678-1234-1234-1234-123456789abc  <==
      
    • lshal 输出中的 system.hardware.uuid (RHEL6);

  • 必要时,是否可以更改主板的 UUID?

Environment

  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6

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