Re: Identifying what is accessing a USB device.

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On Fri, 2021-03-26 at 23:36 -0400, R. G. Newbury wrote:
> 
> > 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???

No, nothing like that.

poc
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