Date: Wed, 25 Oct 2017 16:43:48 +0100 From: Steven Hartland <steven.hartland@multiplay.co.uk> To: Warner Losh <imp@FreeBSD.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r324983 - in head: lib/libc/sys sys/sys Message-ID: <af64bc8e-8c2d-7e4b-b739-ffdbf9cce1e8@multiplay.co.uk> In-Reply-To: <201710251530.v9PFUKoA018217@repo.freebsd.org> References: <201710251530.v9PFUKoA018217@repo.freebsd.org>
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Personally I would expect the fallback to be reboot as without the ability to power back on remotely e.g. IPMI this could render the machine inaccessible, which is not ideal, thoughts? On 25/10/2017 16:30, Warner Losh wrote: > Author: imp > Date: Wed Oct 25 15:30:20 2017 > New Revision: 324983 > URL: https://svnweb.freebsd.org/changeset/base/324983 > > Log: > Define RB_POWERCYCLE > > RB_POWERCYCLE instructs the platform to power off and then power back > on a short time later, if that's possible. Otherwise, degrade to the > RB_POWEROFF behavior. > > Sponsored by: Netflix > > Modified: > head/lib/libc/sys/reboot.2 > head/sys/sys/reboot.h > > Modified: head/lib/libc/sys/reboot.2 > ============================================================================== > --- head/lib/libc/sys/reboot.2 Wed Oct 25 15:28:05 2017 (r324982) > +++ head/lib/libc/sys/reboot.2 Wed Oct 25 15:30:20 2017 (r324983) > @@ -28,7 +28,7 @@ > .\" @(#)reboot.2 8.1 (Berkeley) 6/4/93 > .\" $FreeBSD$ > .\" > -.Dd September 18, 2015 > +.Dd October 24, 2017 > .Dt REBOOT 2 > .Os > .Sh NAME > @@ -84,6 +84,14 @@ for more information. > .It Dv RB_HALT > The processor is simply halted; no reboot takes place. > This option should be used with caution. > +.It Dv RB_POWERCYCLE > +After halting, the shutdown code will do what it can to turn > +off the power and then turn the power back on. > +This requires hardware support, usually an auxiliary microprocessor > +that can sequence the power supply. > +At present only the > +.Xr ipmi 4 > +driver implements this feature. > .It Dv RB_POWEROFF > After halting, the shutdown code will do what it can to turn > off the power. > > Modified: head/sys/sys/reboot.h > ============================================================================== > --- head/sys/sys/reboot.h Wed Oct 25 15:28:05 2017 (r324982) > +++ head/sys/sys/reboot.h Wed Oct 25 15:30:20 2017 (r324983) > @@ -60,6 +60,7 @@ > #define RB_RESERVED2 0x80000 /* reserved for internal use of boot blocks */ > #define RB_PAUSE 0x100000 /* pause after each output line during probe */ > #define RB_REROOT 0x200000 /* unmount the rootfs and mount it again */ > +#define RB_POWERCYCLE 0x400000 /* Power cycle if possible */ > #define RB_MULTIPLE 0x20000000 /* use multiple consoles */ > > #define RB_BOOTINFO 0x80000000 /* have `struct bootinfo *' arg */ >
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