Auto cancel btrfs scrubbing before shutdown/reboot

Looking at the code yourself is encouraged if you know basics of Python, no warranty comes with anything in this repository.

Requrements

1. Python3
2. psutil library
3. running Systemd

Installation

You can use automatic_install.sh if you want quick installation

Manual installtion

1. Run python3 main.py and make sure it doesn't print can't import psutil, you don't have this installed

2. Copy this program to your system with

    sudo cp main.py /usr/local/bin/btrfs-cancel-all-scrub
    sudo chmod 700 /usr/local/bin/btrfs-cancel-all-scrub
   

You can also copy it to other directory, make sure to edit btrfs-auto-cancel-scrub.service to reflect the change.

3. Copy service file and make sure it's registered.

    sudo cp btrfs-auto-cancel-scrub.service /etc/systemd/system
    sudo systemctl daemon-reload
   

4. Try running this service once

This will cancel all your scrubbing process!

	sudo systemctl start btrfs-auto-cancel-scrub.service

It shouldn't print any error messages. (I am 99 percent sure)

5. Enable the service

    sudo systemctl enable btrfs-auto-cancel-scrub.service
   

Done