automated-local deployment with multiple HDDs

[ThomasWaldmann]

Submitted by a borg user via email:

borg 1.4.3 on Ubuntu 24.04.4 LTS / noble.

I have been using the howto on automatic borg backups here:
https://borgbackup.readthedocs.io/en/stable/deployment/automated-local.html

Even though i declared the right UUIDs of my two seperate usb backup disks in "backup.disks". Only on one it would start running as desired. Started the run.sh script by hand most of the time.

today i found the time to recheck and found this line thats added into the udev rules:

ACTION=="add", SUBSYSTEM=="block", ENV{ID_PART_TABLE_UUID}=="<the PTUUID you just noted>", TAG+="systemd", ENV{SYSTEMD_WANTS}+="automatic-backup.service"

This limits a systemd call to just one drive inserted. the one I used at first. Even if you add more drive UUIDs to the "backup.disks" file the backup won't start.

So i changed the udev rule to:

ACTION=="add", SUBSYSTEM=="block", TAG+="systemd", ENV{SYSTEMD_WANTS}+="automatic-backup.service"

This will run the run.sh script for every inserted block device (afaik) and will then run into the check for backup disks and fail unless it's an actual backup drive in there.

Valid fix or am i breaking something i can't see?