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+fsck.btrfs - do nothing, successfully
+*fsck.btrfs* [-aApy] [<device>...]
+*fsck.btrfs* is a type of utility that should exist for any filesystem and is
+called during system setup when the corresponding `/etc/fstab` entries
+contain non-zero value for `fs_passno` , see `fstab`(5) for more.
+Traditional filesystems need to run their respective fsck utility in case the
+filesystem was not unmounted cleanly and the log needs to be replayed before
+mount. This is not needed for BTRFS. You should set fs_passno to 0.
+If you wish to check the consistency of a BTRFS filesystem or repair a damaged
+filesystem, see `btrfs-check`(8). By default the filesystem
+consistency is checked, the repair mode is enabled via '--repair' option (use
+with care!).
+The options are all the same and detect if *fsck.btrfs* is executed in
+non-interactive mode and exits with success,
+otherwise prints a message about btrfs check.
+There are two possible exit code returned:
+No error
+Operational error, eg. device does not exist