OCI: How to Change the UUID of a XFS Filesystem

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Applies To:

Linux OS - Oracle Linux 7 and later

Oracle Cloud Infrastructure

Goal:

This document explains steps to change the UUID of a XFS filesystem(FS).

Solution:

1. From the following output, the /dev/sdb1 has xfs filesystem on it.

# df -Th /mnt/data1
Filesystem     Type  Size  Used Avail Use% Mounted on
/dev/sdb1      xfs    35G  288M   35G   1% /mnt/data1

2. Run any of the following commands to view the current FS UUID.

# blkid /dev/sdb1
/dev/sdb1: LABEL="backups" UUID="ce71308c-2d55-444e-93a8-ddfba504fb89" BLOCK_SIZE="4096" TYPE="xfs" PARTLABEL="data1" PARTUUID="bd7ecb88-cf1d-412c-bfbd-54486a2abe3a"
# xfs_admin -u /dev/sdb1
UUID = ce71308c-2d55-444e-93a8-ddfba504fb89