参考自:
不一致的原因如下:
UUID mentioned in blkid is an identity for filesystem on the md block device while the one in /etc/mdadm.conf identify the md block device itself.
UUID of blkid is stored in filesystem structure (consistent with fstab)
and it helps in uniquely identifying the filesytem among the available filesystems on the system,
while uuid of mdadm.conf resides in the device metadata and helps the md subsystem identify that particular RAID device uniquely.
In particular, it helps identify all the block devices that belong to the RAID array.
Difference of UUID also exists for raid array, device, partition, LVM,PV, VG etc.
本文解析了blkid与mdadm中UUID的不同之处。blkid中的UUID用于标识文件系统,而mdadm.conf中的UUID则标识RAID设备本身。两者分别存储于不同的位置,并服务于不同的目的。
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