[systemd-devel] Guidance on automount/unmount for external powered devices

[Dave Howorth]

On Thu, 11 Mar 2021 11:00:04 +0000
Patrick O'Callaghan <pocallaghan at gmail.com> wrote:
> Unfortunately a system reboot always leaves it in the 'powered up and
> present in /dev/md' state, so I have to manually run the power-down
> script every time I reboot. This is inelegant.

There may be better ways, but could you use an @reboot crontab entry
containing something like

sleep 30 && do-whatever-you-need-to-issue-the-power-down