Lvm probleme

There are 2 things that you can do:

[1] Mount the filesystem without using its UUID

mount -o nouuid mount /dev/mapper/VG_DB-SNAP_MARIA /backups/maria/

or:

[2] Change the UUID of the snapshot LVM

xfs_repair -L /dev/mapper/VG_DB-SNAP_MARIA xfs_admin -U $(uuidgen) /dev/mapper/VG_DB-SNAP_MARIA mount /dev/mapper/VG_DB-SNAP_MARIA /backups/maria/