6.7.

xfs_admin -U new-uuid -L new-label storage-device
udevadm settle

# xfs_admin -U new-uuid -L new-label storage-device
# udevadm settle

tune2fs -U new-uuid -L new-label storage-device
udevadm settle

# tune2fs -U new-uuid -L new-label storage-device
# udevadm settle

swaplabel --uuid new-uuid --label new-label swap-device
udevadm settle

# swaplabel --uuid new-uuid --label new-label swap-device
# udevadm settle