Hi Hans, On Thu, Apr 03, 2014 at 08:44:38PM +0200, Hans-J. Ullrich wrote: > Package: initscripts > Version: 2.88dsf-51 > Severity: minor
> I wondered, why the behaviour of the command halt might have changed. > When I entered the command halt as root, my systems went down and then > switched power off. > Now it changed that way, that it is going down, but does not switch power > off. There is a prompt "System halted". > According to the manual halt -p does poweroff. This is working here, too. > So far, so well halt is working as the manual says. > But when I correct understand, then /etc/default/halt says, the command halt > shall do a poweroff. And when I understand the manual correctly, the single > command halt is calling the command "shutdown -h". If I am correct, then the > command halt is buggy. > If I am not correct, please enlighten me, and explain me, why the single > command halt does no more poweroff, as it did before. > Does this maybe be related to the change from sysinit to systemd? > Please apologize, if this package is the wrong one, I reported the bug to. I don't know why you are seeing a behavior change here in Debian, but this is a FAQ in Ubuntu. You are right that for a very long time, the behavior of 'halt' in sysvinit, as influenced by the contents of /etc/default/halt, was to 'poweroff'. However, a careful reading of the documentation shows that this was actually a *bug*; the 'halt' command, without arguments, should always have been configured to do a non-poweroff halt, and /etc/default/halt should only ever have affected the behavior of 'shutdown -h'. The standard behaviors should always have been: shutdown -P == halt -p == poweroff: halt the system and power down shutdown -H == halt: halt the system, do not power down shutdown -h: halt or power off, depending on /etc/default/halt The reason for this is that shutdown is effectively a wrapper around halt and reboot (see /etc/init.d/reboot, /etc/init.d/halt), and if we allow /etc/default/halt's HALT=poweroff setting to affect the behavior of not just 'shutdown -h', but also of 'halt', then there is *no way* to make 'shutdown -H' do the right thing, because there is no way to override this and tell halt to *not* poweroff (i.e., there is no option to halt which is the opposite of '-p'). So the behavior you describe, while quite unfamiliar to many of us who got quite used to the Debian behavior, is not actually buggy but a bugfix. For information about the history of this behavior in Ubuntu (i.e., with upstart), see: https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/532366 https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/880240 https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/991997 -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ [email protected] [email protected]
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