我有一个非常奇怪的CentOS 7盒子。 在第一次启动时，input“blkid”会产生：
[BurnC7 (2015-12-17 22:00:25) ~]# blkid /dev/block/8:3: UUID="c83f7479-4bc1-44e5-84ae-e38a83e75219" TYPE="ext4" /dev/block/8:2: UUID="2a5bfdfb-2b1d-4748-96bd-fe919b132ce4" TYPE="ext4" /dev/block/8:5: UUID="94be252f-51df-44cf-afde-57214a08d149" TYPE="swap" [BurnC7 (2015-12-17 22:00:26) ~]# 我正在寻找一个UUID – > / dev / sdX设备名称婚姻，这是正常的输出。 更令人费解的是，在lsblk中指定一个我知道存在的分区，键入“blkid / dev / sda2”，例如，它现在显示在常规的“blkid”输出中：
[BurnC7 (2015-12-17 22:00:26) ~]# blkid /dev/sda2 /dev/sda2: UUID="2a5bfdfb-2b1d-4748-96bd-fe919b132ce4" TYPE="ext4" [BurnC7 (2015-12-17 22:02:31) ~]# blkid /dev/block/8:3: UUID="c83f7479-4bc1-44e5-84ae-e38a83e75219" TYPE="ext4" /dev/block/8:2: UUID="2a5bfdfb-2b1d-4748-96bd-fe919b132ce4" TYPE="ext4" /dev/block/8:5: UUID="94be252f-51df-44cf-afde-57214a08d149" TYPE="swap" /dev/sda2: UUID="2a5bfdfb-2b1d-4748-96bd-fe919b132ce4" TYPE="ext4" [BurnC7 (2015-12-17 22:02:33) ~]#
即使陌生人仍然是，重新启动后，blkid输出现在看起来很好：
[BurnC7 (2015-12-17 22:04:35) ~]# blkid /dev/sda2: UUID="2a5bfdfb-2b1d-4748-96bd-fe919b132ce4" TYPE="ext4" /dev/sda3: UUID="c83f7479-4bc1-44e5-84ae-e38a83e75219" TYPE="ext4" /dev/sda5: UUID="94be252f-51df-44cf-afde-57214a08d149" TYPE="swap" [BurnC7 (2015-12-17 22:04:37) ~]#
很明显，blkid从某处获取stream氓信息 – 但是在哪里？
有一个更可靠的方法来获得UUID – > / dev /设备名称关系？
编辑：正如迈克尔·汉普顿（Michael Hampton）所build议的，“ls -l / dev / disk / by-uuid /”的工作方式，即使在blkid不行的情况下（与上面的例子不同）
[BurnC7 (2015-12-18 12:00:40) ~]# blkid /dev/block/8:3: UUID="ac2e5bb8-76d9-47e1-b5f7-3b91fad9e35f" TYPE="ext4" /dev/block/8:2: UUID="6de21dfd-956d-4593-a8f2-88eeed2198f8" TYPE="ext4" /dev/block/8:5: UUID="f6c41a22-f962-4b71-b880-54c8afb49516" TYPE="swap" [BurnC7 (2015-12-18 12:00:41) ~]# ls -l /dev/disk/by-uuid/ total 0 lrwxrwxrwx 1 root root 10 Dec 18 11:41 6de21dfd-956d-4593-a8f2-88eeed2198f8 -> ../../sda2 lrwxrwxrwx 1 root root 10 Dec 18 11:41 ac2e5bb8-76d9-47e1-b5f7-3b91fad9e35f -> ../../sda3 lrwxrwxrwx 1 root root 10 Dec 18 11:41 f6c41a22-f962-4b71-b880-54c8afb49516 -> ../../sda5 [BurnC7 (2015-12-18 12:00:47) ~]#
要通过UUID查找设备，可以查看/dev/disk/by-uuid 。
例如：
# ls -l /dev/disk/by-uuid/ total 0 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 10156170545889643033 -> ../../dm-6 lrwxrwxrwx. 1 root root 9 Dec 18 10:43 2bcef3fa-e55c-4aaa-922b-9bc142de041f -> ../../sdc lrwxrwxrwx. 1 root root 10 Dec 18 10:43 4fa98e08-de06-4baf-9e63-6c2bde67f75e -> ../../sda3 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 5166-F80B -> ../../sda1 lrwxrwxrwx. 1 root root 9 Dec 18 10:43 608464c3-d505-4829-bce3-520a74883c22 -> ../../sdb lrwxrwxrwx. 1 root root 9 Dec 18 10:43 6aebf7e8-55cc-4684-92bf-e17d8fc23dd6 -> ../../sdd lrwxrwxrwx. 1 root root 10 Dec 18 10:43 825aa99c-a2ef-4d4a-b739-663b58b47da8 -> ../../dm-2 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 8995619969489110662 -> ../../dm-5 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 b738c1d5-eb9b-4468-bb0c-573ceaafe485 -> ../../sda2 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 c9a0f6de-7ac5-4858-a8b3-d7312d35acbb -> ../../dm-1 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 d4c56b9b-f99a-492d-a04d-749c35d556a7 -> ../../sda5 lrwxrwxrwx. 1 root root 10 Dec 18 10:43 d693f2b3-b9cf-42a6-9383-9bd62e70804c -> ../../sda4