使用xfs_admin -U修改XFS文件系统设备的UUID:
[root@ebs-97785 data0609]# blkid /dev/vda1: UUID="281f884a-e5c5-41b2-98bf-3838498d822b" TYPE="xfs" PARTUUID="b21d7e01-01" /dev/vdb1: UUID="0afba912-19f8-488a-a79b-8d5c5b693d10" TYPE="ext4" PARTUUID="073b0b5f-01" /dev/vdc1: UUID="0afba912-19f8-488a-a79b-8d5c5b693d10" TYPE="ext4" PARTUUID="073b0b5f-01" /dev/vdd1: UUID="281f884a-e5c5-41b2-98bf-3838498d822b" TYPE="xfs" PARTUUID="b21d7e01-01" 这里看到两个uuid一样,导致系统挂载不上! 使用uuidgen命令生成uuid: [root@ebs-97785 data0609]# uuidgen bb070ab1-9a68-466b-847e-f111316d51c5 [root@ebs-97785 data0609# xfs_admin -U bb070ab1-9a68-466b-847e-f111316d51c5 /dev/vdd1 Clearing log and setting UUID writing all SBs new UUID = bb070ab1-9a68-466b-847e-f111316d51c5 [root@node112 ~]# blkid /dev/vda1: UUID="281f884a-e5c5-41b2-98bf-3838498d822b" TYPE="xfs" PARTUUID="b21d7e01-01" /dev/vdb1: UUID="0afba912-19f8-488a-a79b-8d5c5b693d10" TYPE="ext4" PARTUUID="073b0b5f-01" /dev/vdc1: UUID="0afba912-19f8-488a-a79b-8d5c5b693d10" TYPE="ext4" PARTUUID="073b0b5f-01" /dev/vdd1: UUID="b5e01451-e43e-4e07-bbd5-1a727c58cdae" TYPE="xfs" PARTUUID="b21d7e01-01" 最后mount磁盘: [root@ebs-97785 /]# mount -t xfs /dev/vdd1 /data0609 [root@ebs-97785 data0609]# df -lh Filesystem Size Used Avail Use% Mounted on devtmpfs 3.8G 0 3.8G 0% /dev tmpfs 3.9G 4.0K 3.9G 1% /dev/shm tmpfs 3.9G 8.5M 3.9G 1% /run tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/vda1 30G 3.5G 27G 12% / /dev/vdb1 127G 51G 70G 43% /home tmpfs 781M 0 781M 0% /run/user/0 /dev/vdc1 127G 55G 66G 46% /home0609 /dev/vdd1 30G 3.5G 27G 12% /data0609