Bcachefs, snapshot and rsync as "poor man's send and receive"

[Nihon-Ryori]

The code serves as a suggestion. Everyone is free to improve the code. For example, you could choose a variant for data transmission that enables backup even over really poor Internet connections.

poor_mans_send_and_receive.sh

# [Nihon-Ryori](https://github.com/Nihon-Ryori)
# Open Source Code. Feel free to use the Code for bcachefs project or what ever.
# 2024-11-18, ver 001
# This untested code should do a Bcachefs snapshot and rsync,  as "poor man's send and receive".

# Untested Code. Use the code at your own risk and only if you would write it yourself. The code is only intended for test use with a test system that does not contain any data that is still required.

#!/bin/bash

Echo "Create snapshot"
snapshot_id=$(date +%Y%m%d_%H%M%S)
bcachefs snapshot create $snapshot_id
Echo "Snapshot created"

Echo "Run syncronize"
rsync -avh --delete --hard-links /pfad/zum/Quellordner/ /pfad/zum/Zielordner/ \
    --exclude-from=/pfad/exkludierte_dateien.txt \
    --link-dest=/pfad/quellordner_snapshot_$snapshot_id
Echo "rsync finished"

# Delete Snapshot after syncronize"
bcachefs snapshot delete $snapshot_id

echo "poor man's send and receive completed."

echo "Press Enter to end the script"; read -r