Date: Wed, 21 Feb 2007 11:13:09 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: John Baldwin <jhb@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, Nick Hibma <n_hibma@freebsd.org> Subject: Re: cvs commit: src/sbin/mdconfig mdconfig.8 mdconfig.c Message-ID: <20070221111242.X80197@fledge.watson.org> In-Reply-To: <200702210607.08422.jhb@freebsd.org> References: <200702202204.l1KM4NV4037929@repoman.freebsd.org> <20070221103350.P80197@fledge.watson.org> <200702210607.08422.jhb@freebsd.org>
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On Wed, 21 Feb 2007, John Baldwin wrote: > On Wednesday 21 February 2007 05:36, Robert Watson wrote: >> >> On Tue, 20 Feb 2007, Nick Hibma wrote: >> >>> n_hibma 2007-02-20 22:04:23 UTC >>> >>> FreeBSD src repository >>> >>> Modified files: >>> sbin/mdconfig mdconfig.8 mdconfig.c >>> Log: >>> Kris suggested that swap is a better choice as a default than malloc. >>> >>> MFC: 1 week >> >> Are you sure this should be MFC'd? While I agree with the change in >> principle, it will cause systems currently using malloc-backed md devices >> to mysteriously switch to swap-backed. How will this behave on systems >> that don't have swap, such as pure diskless systems not using NFS-backed >> swap? This isn't a strong objection per se, but it could be that rc.d >> scripts need tweaking for diskless environments if they currently do use >> malloc-back md devices based on that being the default. > > I don't think this changes the default for anything in 6.x. He changed the > default for his patch from yesterday that made it assume a type if you do > 'mdconfig -s <size>'. Currently you have to do: > > 'mdconfig -a -t malloc -s <size>' or 'mdconfig -a -t swap -s <size>' > > but Nick changed it so just '-s <size>' implied '-a -t malloc', and now he's > changed it to imply '-a -t swap'. Ah, OK. This sounds reasonable. Thanks! Robert N M Watson Computer Laboratory University of Cambridge
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