If you're not working on things that are likely to break that test, you might want to skip the long-running test method to speed up your compile-test-debug cycle.

Ext4 marks unused groups of blocks within the inode table to allow the FSCK process to skip them entirely to speed the check process.

Handling the machine manually, use the additional speed switch (the handle multiplier), which can change the value of displacement equal to one skip on the scale of the hand-wheel.