If you can not mount your XFS partition with classical wrong fs type, bad superblock etc. error and you see a message in kernel logs (dmesg) like that:
XFS: Filesystem sdb7 has duplicate UUID - can't mount
you can still mount the filesystem with nouuid options as below:
mount -o nouuid /dev/sdb7 disk-7
But every mount, you have to provide
nouuid option. So, for exact solution you have to generate a new UUID for this partition with
xfs_admin -U generate /dev/sdb7 Clearing log and setting UUID writing all SBs new UUID = 01fbb5f2-1ee0-4cce-94fc-024efb3cd3a4
after that, you can mount this XFS partition regularly.