Re: Some suggestions on old-fashioned usage with s6 2.10.x

From: Guillermo <gdiazhartusch_at_gmail.com>
Date: Fri, 29 Jan 2021 14:27:10 -0300

El vie, 29 ene 2021 a las 0:07, Casper Ti. Vector escribió:
>
> Not using s6-linux-init has never been an explicit goal, [...]
>
> Currently I do not understand the `s6-linux-init-shutdown(d)' way
> well, so the old-fashioned way is retained at least for now, [...]

Forgive me if I'm misunderstanding aspects of the architecture, but
jugdging from a quick look at the Git repository, I *think* that you
could depend on s6-linux-init (the package):

* You could replace /etc/slew'/init/rc.boot with s6-linux-init (the
program), or a wrapper script around it. s6-linux-init does more or
less the same as the current script, except running load_clock.rc
(which you could do in /etc/slew'/init/rc.init).
* You could move the current /etc/slew/run to
/etc/s6-linux-init/current/run-image when installing slew. I'm not
sure what skalibs' hiercopy() would do if the latter is just a symlink
to the former.
* You could replace /etc/slew'/init/rc.halt with a service directory
for s6-linux-init-shutdownd in /etc/slew'/run/service, just like you
do now for the catch-all logger.
s6-linux-init-shutdownd does more or less the same as the current
script, except running save_log.rc, save_clock.rc and calling swapoff.
You can move that to /etc/slew'/init/rc.fin, or
/etc/s6-linux-init/current/rc.shutdown.final if you must do some of it
after killing all processes and unmounting filesystems.
* You could symlink /etc/s6-linux-init/current/rc.{init,shutdown} to
/etc/slew'/init/rc.{init,fin}, perhaps with some minimal
modifications.
* You could replace calls to s6-svscanctl in
/etc/slew'/run/service/.s6-svscan/SIG* with calls to s6-linux-init-hpr
if you want to be able to do e.g. 'busybox poweroff''.
* You could replace /etc/slew'/run/service/.s6-svscan/finish with
something simpler, instead of being a symlink to
/etc/slew/init/rc.halt.

G.
Received on Fri Jan 29 2021 - 17:27:10 UTC