Subject: Identifying what is accessing a USB device.

I have an external USB-3 2-disk docking station, and a script which can
power up and down the drives as needed.

I have a systemd automount unit that correctly powers up the dock when
accessed, then mounts the drives (thanks Ed).

After an idle time, automount unmounts the drives. A script detects
when this happens and powers them down ... *at which point they
immediately power up again, and remain up until I intervene manually,
even though they are unmounted*.

This never happens if I run the script directly from the command line
(i.e. the drives power down and stay down).

> I'm open to suggestions if anyone has any ideas.

The systemd service unit has a Restart=on-failure, or a Restart=always line???

Geoff
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