[arch-general] remote poweroff with systemd

[Fons Adriaensen]

On Wed, Aug 07, 2013 at 01:15:28PM +0200, Tom Gundersen wrote:
 
> It is correct that systemtl poweroff is synchronous, but using telinit
> or --no-block will avoid that.

Are you sure about telinit ? It was the first thing I tried, assuming
it would asynchronous. But the man page says nothing about it using
--no-block. 
 
> > but a dead-lock: systemd waits for the ssh session
> > to finish to go on with the poweroff, and the ssh session waits for the
> > poweroff to finish until it returns. And those are precisely the situations
> > where "--no-block" is useful.
> 
> Actually, you don't get this deadlock. ssh will shutdown just fine
> even if you have some command (such as systemctl) running.
> 
> The reason for the problem you are seeing here is that the network is
> torn down before ssh is shutdown. This isn't actually a big problem,
> as the remote machine is shutting down just fine. The only problem is
> that the ssh client ends up hanging, which is annoying, but not really
> critical (kill it/ignore it/whatever).

The shutdowns are called from a script which is supposed to continue...

Ciao,

-- 
FA

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