If you have different partitions (such as USB ones) with the same label (so that you can syncro them with the same script) but with different filesystem (such as btrfs and ext4) you can modify your fstab line using auto instead of etx4 or btrfs.
I mean something like this:
LABEL="your-label" /media/your-mount-path auto users,noauto,noatime,nodiratime 0 2In this way you will be able to mount your usb devices (either etx4 or btrfs or another fs) without problems.