[root]# blkid 
/dev/mmcblk0p1: SEC_TYPE="msdos" UUID="C522-EA52" TYPE="vfat" 
/dev/mmcblk0p2: UUID="62ba9ec9-47d9-4421-aaee-71dd6c0f3707" TYPE="ext4" 
/dev/sda1: UUID="489f7c23-38e0-442f-abaa-10c569e48b0d" UUID_SUB="51e04e91-847f-4158-aeaf-4b9d3ab057b6" TYPE="btrfs" 
[root]# ls -l /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root  9 oct.   1 17:05 336ec491-71d3-4a7b-8a1c-9f3ec44a9ef7 -> ../../sda
lrwxrwxrwx 1 root root 10 oct.   1 17:05 489f7c23-38e0-442f-abaa-10c569e48b0d -> ../../sda1
lrwxrwxrwx 1 root root 15 oct.   1 17:04 62ba9ec9-47d9-4421-aaee-71dd6c0f3707 -> ../../mmcblk0p2
lrwxrwxrwx 1 root root 15 janv.  1  1970 C522-EA52 -> ../../mmcblk0p1

[root@edmchome:~]# readlink -f /dev/disk/by-uuid/489f7c23-38e0-442f-abaa-10c569e48b0d 
/dev/sda1