raspberry-pi-os VS dattobd

Last but not the least, learning by doing is fun so you can check out - raspberry-pi-os (writing an os from scratch) - https://github.com/s-matyukevich/raspberry-pi-os

CheesecakeOS for Raspberry Pi Volume 0: Booting, Processes, and Virtual Memory is the first in what I hope is a series of github markdown tutorials or volumes on bare-metal from-scratch operating system development.

I have dreamed of contributing to the Linux Kernel, but have yet to find the courage to jump in and do so. I started by attempting to read Understanding the Linux Kernel by Daniel Bovet and Marco Cesati, but found it was too advanced for me at the time. I found another text I credit with advancing my understanding, Computer Systems: A Programmer's Perspective by Randall Bryant and David O'Hallaron. I worked on the self-study labs from their book website, and found them to be a superb educational tool.

Further, then becoming interested in what creating an operating system actually means, I stumbled upon Sergey Matyukevich's Rasberry-Pi-OS github repo (https://github.com/s-matyukevich/raspberry-pi-os). I wanted to expand on his tutorial, for my own education, and, in the best case, for the benefit of others.

There are many ideas taken from Linux in the implementation, as when I didn't know how to proceed, that is the source I would consult. Though, I attempt to simplify and explain the details in the text. The implementation stops short of implementing or supporting a file system, the subject of the next volume.

Not familiar with this myself but aiming to start soon. Have found a nice youtube series for low level development on the RPi, not sure which version he uses, but reportedly it works for some on RPi 4. He also has a subreddit:

Here's one tutorial: https://github.com/s-matyukevich/raspberry-pi-os

C: Learning operating system development using Linux kernel and Raspberry Pi

https://github.com/datto/dattobd is still a thing, apparently. Needs its own kernel module, so have fun with that.

There's https://github.com/datto/dattobd Never used it though.

(Or if you're really crazy, and want image based incremental backups then this exists https://github.com/datto/dattobd).

The dattobd [1] block device driver fills this gap. It basically implements VSS like behavior on Linux. It is used in the Datto Linux backup agent in combination with the backup appliance [2], but it can be used stand alone as well (see readme).

Disclaimer: I'm a software engineer for Datto.

[1] https://github.com/datto/dattobd

It connects but fails to back up a remote Linux server. Then I read from somewhere saying it works only in LAN. I ends up using https://github.com/datto/dattobd and rsync.

In my last job I worked on writing backup agents in C++ for multiple platforms using userspace API's. There was a team that exclusively worked on the Linux driver that our agent used, the driver is open source too - https://github.com/datto/dattobd