see man:bootup for the general architecture of shutdown and
man:systemd-shutdown for how to add a script as the "ultimate phase" of
the shutdown
doing it with services is tricky, your approch will make it be called at
shutdown but you did not specify "when" during shutdown, so systemd
might schedule it at any point
you could try to plug it in at the right place using some Before= and
After= but if that command is the "real shutdown" command, i'd use the
process described in systemd-shutdown
regards
Jérémy
On 27/10/2017 11:43, D.S. Ljungmark wrote:
So, I've got a piece of hardware I want to do a final handover to just
around reboot.target / shutdown.target
This will then cause the entire CPU and hardware allocated to it to
actually drop power (and schedule re-power), so I don't want to do this
earlier.
Is it simply to do:
[Unit]
DefaultDependencies=no
[Service]
ExecStart=/usr/bin/big-buck-bunny /dev/i2c-1
Type=oneshot
[Install]
WantedBy=reboot.target
or am I missing something here? ( Perhaps the fact that systemd has
already pivoted root to somewhere else?)
//D.S.
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