From: Gerd Hoffmann <kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
Jan Kiszka <jan.kiszka-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>,
Guido Guenther <agx-wGvLLbajjwFAfugRpC6u6w@public.gmane.org>
Subject: Re: [PATCH] add acpi powerbutton support
Date: Tue, 22 Jan 2008 10:48:19 +0100 [thread overview]
Message-ID: <4795BBE3.5060609@redhat.com> (raw)
In-Reply-To: <47947857.4020004-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Hi,
>>> Catching ctrl-c sounds like a good idea but "ctrl-c, ctrl-c" should
>>> probably kill qemu then, since the machine might have no acpid running -
>>> in that case hitting ctrl-c would have no effect.
>>>
>> Good idea.
>>
>
> I'm worried about the 30+ second shutdown latency. Is there precedent
> for SIGTERM or SIGINT requiring this long to take effect?
xenner signals a shutdown request to the guest for the first SIGINT (and
prints a message to the user saying so). Sending SIGINT twice kills the
guest and cleans up. I find that very useful, you can shutdown the
guest cleanly with a convenient Ctrl-C and also kill it off quickly by
simply pressing Ctrl-C again.
SIGTERM kills the guest instantly. Applictions are expected to react
quickly on SIGTERM, there is no way you can wait for a clean guest
shutdown then. It is used on (host) shutdown for example, where you'll
get a SIGKILL when you don't exit within three seconds.
cheers,
Gerd
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next prev parent reply other threads:[~2008-01-22 9:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-03 18:11 [PATCH] system_powerdown via acpi power button Guido Guenther
[not found] ` <20080103181132.GA1077-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-03 18:14 ` acpi sci polarity Guido Guenther
[not found] ` <20080103181415.GB1077-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-03 21:17 ` Avi Kivity
[not found] ` <477D50FE.4040104-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-04 18:31 ` Guido Guenther
[not found] ` <20080104183158.GA14002-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-06 9:08 ` Avi Kivity
[not found] ` <47809A8F.5090803-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-07 11:59 ` Guido Guenther
[not found] ` <20080107115916.GA24050-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-07 12:02 ` [PATCH] add acpi powerbutton support Guido Guenther
[not found] ` <20080107120223.GB24050-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-07 12:44 ` Avi Kivity
[not found] ` <47821EC8.4020308-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-08 4:34 ` Jun Koi
[not found] ` <fdaac4d50801072034p7f047495jd4be276c20623be3-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-01-08 8:09 ` Guido Guenther
[not found] ` <20080108080928.GA9823-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-19 15:40 ` Jan Kiszka
[not found] ` <479219D6.1000707-S0/GAf8tV78@public.gmane.org>
2008-01-20 11:56 ` Guido Guenther
[not found] ` <20080120115617.GA31618-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-21 10:00 ` Jan Kiszka
[not found] ` <47946D4A.5000808-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2008-01-21 10:47 ` Avi Kivity
[not found] ` <47947857.4020004-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-21 11:35 ` Jan Kiszka
[not found] ` <47948376.9000105-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2008-01-21 12:52 ` Avi Kivity
2008-01-22 9:48 ` Gerd Hoffmann [this message]
[not found] ` <4795BBE3.5060609-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-01-22 10:06 ` Jan Kiszka
2008-01-08 8:50 ` Avi Kivity
[not found] ` <47833938.1020609-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-09 18:00 ` Guido Guenther
[not found] ` <20080109180001.GA11240-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-13 9:35 ` Avi Kivity
[not found] ` <4789DB74.5070901-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-13 13:48 ` Avi Kivity
[not found] ` <478A1694.1010307-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-14 10:23 ` Guido Guenther
[not found] ` <20080114102326.GB8987-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-14 17:34 ` Avi Kivity
2008-01-18 22:20 ` Avi Kivity
[not found] ` <47912648.4030101-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-19 14:04 ` Guido Guenther
2008-01-14 10:21 ` Guido Guenther
2008-01-14 12:41 ` Alexey Eremenko
[not found] ` <64F9B87B6B770947A9F8391472E032160C95C641-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2008-01-14 13:30 ` Guido Guenther
2008-01-22 10:11 ` [PATCH] system_powerdown via acpi power button Jan Kiszka
[not found] ` <4795C134.7030400-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2008-01-22 11:49 ` Guido Guenther
[not found] ` <20080122114955.GA28335-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-22 12:12 ` Jan Kiszka
[not found] ` <4795DD9C.3040804-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2008-01-24 12:37 ` Guido Guenther
[not found] ` <20080124123730.GA4527-DVvpyRRQz99DDGxTMhc9XQ@public.gmane.org>
2008-01-24 12:41 ` Avi Kivity
[not found] ` <47988797.8040208-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-24 12:50 ` Gerd Hoffmann
[not found] ` <479889B1.6030403-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-01-24 12:54 ` Avi Kivity
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