Date: Tue, 29 Sep 2009 15:05:07 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: [PATCH] Shutdown cooloff feature Message-ID: <86ske5gav0.fsf@ds4.des.no> In-Reply-To: <h9t09n$qhl$1@ger.gmane.org> (Ivan Voras's message of "Tue, 29 Sep 2009 14:58:37 %2B0200") References: <4AC141B0.4090705@delphij.net> <alpine.BSF.2.00.0909291245080.91454@fledge.watson.org> <h9st65$eni$1@ger.gmane.org> <86ws3iexl3.fsf@ds4.des.no> <h9t09n$qhl$1@ger.gmane.org>
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Ivan Voras <ivoras@freebsd.org> writes: > Dag-Erling Sm=C3=B8rgrav <des@des.no> writes: > > [...] shutdown(8) sends either SIGINT, SIGUSR or SIGUSR2 to init(8), > > which runs /etc/rc.shutdown before killing all remaining processes > > and either reboot / halt or start a single-user shell, while > > reboot(8) and halt(8) send SIGTSTP to init(8), then SIGTERM to every > > other process in the system, then SIGKILL to any process that hasn't > > responded to SIGTERM after somewhere between five and sixty seconds, > > before issuing a reboot(2) syscall. > Is this distinction between them useful (other than possibly speed of > shutdown/reboot)? Good question. You definitely want to run rc.shutdown in the common case (multi-user mode), but running it in single-user mode may have unintended consequences. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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