From: Dale <dalek1967@bellsouth.net>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Emergency shutdown, how to?
Date: Wed, 02 Apr 2008 14:19:36 -0500 [thread overview]
Message-ID: <47F3DC48.3010906@bellsouth.net> (raw)
In-Reply-To: <200804021928.01885.volker.armin.hemmann@tu-clausthal.de>
Volker Armin Hemmann wrote:
> On Mittwoch, 2. April 2008, Steven Lembark wrote:
>
>> Liviu Andronic wrote:
>> > On Fri, Mar 28, 2008 at 10:07 AM, Dale <dalek1967@bellsouth.net> wrote:
>> >>> By the way the safest and recommended command, although a bit longish
>> >>> should be ALT+SysRq(or print)+S(ync)+U(mount)+B(Reboot).
>> >>
>> >> Since I wanted to shutdown instead of reboot, it would be ALT + SysRq
>> >> + S + U + O then correct?
>> >
>> > Are there any potential harms to the hardware / system in case one
>> > tends to abuse (i.e. use more often than necessary) of this command?
>> > It's so often so tempting to shut down your system fast.
>>
>> Short of a serious emergency (e.g., UPS with
>> 30-sec lag and no input power) stick with
>> 'shutdown -fh now'. The main problem is that
>> you bypass the stop phase of all the app's
>> started up via init.d; very little short of
>> just hitting the reset switch or yanking the
>> power.
>>
>
> if you do it the right way, start with 'e' and 'i', all apps are cleanly
> terminated/killed. So if an app does not quit cleanly, it is broken.
>
> The correct sequence is: e,i,u,b/o and it is absolutly save.
>
Folks, keep in mind why I asked this question in the first place. My
power supply was frying and I needed a VERY fast shutdown. This was not
asked as a fast way to shutdown just because we are impatient or
something. This was for the event of a serious emergency where I needed
a shutdown in just a very few seconds not a minute or two. Some of my
services take a while to stop, foldingathome being the longest one.
Basically, this is not intended to be used to shutdown a puter on a
regular basis, unless you burn out P/S's on a daily basis. O-o
Just didn't want someone to be using this on a regular basis and then
wondering why their system has a new nickname, FUBAR. :'(
Dale
:-) :-)
--
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next prev parent reply other threads:[~2008-04-02 19:19 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-28 7:33 [gentoo-user] Emergency shutdown, how to? Dale
2008-03-28 7:41 ` Daniel Pielmeier
2008-03-28 7:46 ` Dirk Heinrichs
2008-03-28 7:51 ` Daniel Pielmeier
2008-03-28 8:07 ` Dale
2008-03-28 8:11 ` Dirk Heinrichs
2008-03-28 10:12 ` Michal 'vorner' Vaner
2008-04-02 13:36 ` Liviu Andronic
2008-04-02 13:44 ` [gentoo-user] " Michael Schmarck
2008-04-02 13:49 ` Dirk Heinrichs
2008-04-02 14:19 ` [gentoo-user] " Michael Schmarck
2008-04-02 14:28 ` [gentoo-user] " Dirk Heinrichs
2008-04-02 14:41 ` Mark Knecht
2008-04-02 15:18 ` Neil Bothwick
2008-04-02 20:58 ` darren kirby
2008-04-02 22:24 ` Neil Bothwick
2008-04-02 17:40 ` [gentoo-user] " Michael Schmarck
2008-04-02 17:48 ` Neil Bothwick
2008-04-03 4:51 ` [gentoo-user] " Michael Schmarck
2008-04-03 8:41 ` Neil Bothwick
2008-04-03 8:56 ` [gentoo-user] " Michael Schmarck
2008-04-04 0:28 ` Iain Buchanan
2008-04-04 21:05 ` [gentoo-user] " Mark Knecht
2008-04-04 21:50 ` Neil Bothwick
2008-04-04 22:14 ` Mark Knecht
2008-04-05 16:42 ` Steven Lembark
2008-04-07 1:07 ` Iain Buchanan
2008-04-07 17:28 ` Steven Lembark
2008-04-07 23:29 ` Iain Buchanan
2008-04-08 18:19 ` Steven Lembark
2008-04-02 15:50 ` [gentoo-user] " Steven Lembark
2008-04-02 17:28 ` Volker Armin Hemmann
2008-04-02 19:19 ` Dale [this message]
2008-04-02 19:57 ` Mark Knecht
2008-04-02 21:42 ` Neil Bothwick
2008-04-02 19:59 ` Volker Armin Hemmann
2008-04-02 21:43 ` Neil Bothwick
2008-04-02 21:56 ` Dale
2008-04-03 2:35 ` Hal Martin
2008-04-03 16:10 ` Steven Lembark
2008-04-03 18:15 ` Dale
2008-04-03 19:38 ` Steven Lembark
2008-04-04 0:45 ` Dale
2008-04-04 17:04 ` Steven Lembark
2008-04-04 19:52 ` Dale
2008-04-04 20:24 ` Steven Lembark
2008-04-04 0:29 ` Iain Buchanan
2008-04-04 1:00 ` Dale
2008-04-04 17:06 ` Steven Lembark
2008-04-07 6:42 ` Dan Farrell
2008-04-07 20:14 ` Steven Lembark
2008-03-28 8:29 ` Neil Bothwick
2008-03-28 11:09 ` Dale
2008-03-28 7:42 ` Dirk Heinrichs
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