1、使用blkid命令

[root@VPC3-CS-TEST ~]# blkid
/dev/vda1: LABEL="/" UUID="0aa3affc-3964-4faa-a79f-71714fa914eb" TYPE="ext4"
/dev/vdb1: UUID="edda0f53-2688-4edb-99ff-ed4df8d8a4b1" TYPE="ext4"
[root@VPC3-CS-TEST ~]# man blkid
DESCRIPTION
       The  blkid  program  is  the  command-line interface to working with the libblkid(3) library.  It can determine the type of content (e.g.
       filesystem or swap) that a block device holds, and also the attributes (tokens, NAME=value pairs) from the content metadata  (e.g.  LABEL
       or UUID fields).

       It  is  recommended  to  use lsblk(8) command to get information about block devices, or lsblk --fs to get an overview of filesystems, or
       findmnt(8) to search in already mounted filesystems.

2、使用tune2fs命令

[root@VPC3-CS-TEST ~]# tune2fs -l /dev/vda1 |grep 'UUID'
Filesystem UUID:          0aa3affc-3964-4faa-a79f-71714fa914eb
[root@VPC3-CS-TEST ~]# man tune2fs
DESCRIPTION
       tune2fs allows the system administrator to adjust various tunable filesystem parameters on Linux ext2, ext3, or  ext4  filesystems.   The
       current values of these options can be displayed by using the -l option to tune2fs(8) program, or by using the dumpe2fs(8) program.

       The  device  specifier  can  either  be  a  filename (i.e., /dev/sda1), or a LABEL or UUID specifier: "LABEL=volume-name" or "UUID=uuid".

3、使用dumpe2fs命令

[root@VPC3-CS-TEST ~]# dumpe2fs /dev/vda1 |grep 'UUID'
dumpe2fs 1.42.9 (28-Dec-2013)
Filesystem UUID:          0aa3affc-3964-4faa-a79f-71714fa914eb

4、使用/dev/disk/by-uuid目录

[root@VPC3-CS-TEST ~]# ls -l /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 Mar  1 11:02 0aa3affc-3964-4faa-a79f-71714fa914eb -> ../../vda1
lrwxrwxrwx 1 root root 10 Mar  1 11:02 edda0f53-2688-4edb-99ff-ed4df8d8a4b1 -> ../../vdb1
04-09 23:50