Date: Fri, 24 Jun 2016 15:24:21 -0700 From: "Chris H" <bsd-lists@bsdforge.com> To: <freebsd-current@freebsd.org> Subject: Re: HEADS UP: caution required with updates using custom kernels Message-ID: <330789230754140e38fb527973e23405@ultimatedns.net> In-Reply-To: <20160624155111.GB20770@spindle.one-eyed-alien.net> References: <20160623210751.GB7860@spindle.one-eyed-alien.net> <20160624060019.5e650ad9.ohartman@zedat.fu-berlin.de>, <20160624155111.GB20770@spindle.one-eyed-alien.net>
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On Fri, 24 Jun 2016 15:51:11 +0000 Brooks Davis <brooks@freebsd.org> wrote > On Fri, Jun 24, 2016 at 06:00:19AM +0200, O. Hartmann wrote: > > Am Thu, 23 Jun 2016 21:07:51 +0000 > > Brooks Davis <brooks@freebsd.org> schrieb: > > > > > Kernel config minimalists and those running aarch64 and riscv systems > > > will want to head this UPDATING message. > > > > > > In practice, if you're fairly up to date, doing installworld before > > > installkernel will also work (I've tested that case from ALPHA4), but is > > > always somewhat risky. > > > > > > -- Brooks > > > > > > ----- Forwarded message from Brooks Davis <brooks@FreeBSD.org> ----- > > > > > > Date: Thu, 23 Jun 2016 21:02:05 +0000 (UTC) > > > From: Brooks Davis <brooks@FreeBSD.org> > > > To: src-committers@freebsd.org, svn-src-all@freebsd.org, > > > svn-src-head@freebsd.org > > > Subject: svn commit: r302152 - head > > > > > > Author: brooks > > > Date: Thu Jun 23 21:02:05 2016 > > > New Revision: 302152 > > > URL: https://svnweb.freebsd.org/changeset/base/302152 > > > > > > Log: > > > Add an UPDATING entry for the pipe() -> pipe2() transition. > > > > > > Approved by: re (gjb) > > > Sponsored by: DARPA, AFRL > > > > > > Modified: > > > head/UPDATING > > > > > > Modified: head/UPDATING > > > > > > ============================================================================= > > > = --- head/UPDATING Thu Jun 23 20:59:13 2016 (r302151) > > > +++ head/UPDATING Thu Jun 23 21:02:05 2016 (r302152) > > > @@ -31,6 +31,14 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11 > > > disable the most expensive debugging functionality run > > > "ln -s 'abort:false,junk:false' /etc/malloc.conf".) > > > > > > +20160622: > > > + The the libc stub for the pipe(2) system call has been replaced with > > > + a wrapper which calls the pipe2(2) system call and the pipe(2) is > > > now + only implemented by the kernels which include "options > > > + FREEBSD10_COMPAT" in their config file (this is the default). > > > + Users should ensure that this option is enabled in their kernel > > > + or upgrade userspace to r302092 before upgrading their kernel. > > > + > > > 20160527: > > > CAM will now strip leading spaces from SCSI disks' serial numbers. > > > This will effect users who create UFS filesystems on SCSI disks > > > using > > > > > > > > ----- End forwarded message ----- > > > > Is this showing up, when one doesn't have the expected COMPAT_FREEBSD10 in > > kernel and updated kernel __before___ world?: > > You must include COMPAT_FREEBSD10 or have a new userspace. Otherwise > things like your shell are unlikely to work. > > -- Brooks > Hi. I don't see any indication of why this change was required (the obsolescence of pipe(2)) Can you elaborate a little, please? Thanks. --Chris
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