Date: Sat, 26 Jul 2003 19:43:19 +0300 From: Ruslan Ermilov <ru@freebsd.org> To: Bruce Evans <bde@zeta.org.au> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/release/i386 drivers.conf Message-ID: <20030726164319.GC41833@sunbay.com> In-Reply-To: <20030726184513.D5126@gamplex.bde.org> References: <200307250010.h6P0AYKW061085@repoman.freebsd.org> <20030725053806.GA36982@sunbay.com> <3F20DF2D.8030209@freebsd.org> <20030725082357.GA53826@sunbay.com> <20030726184513.D5126@gamplex.bde.org>
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--yLVHuoLXiP9kZBkt Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jul 26, 2003 at 06:54:48PM +1000, Bruce Evans wrote: > On Fri, 25 Jul 2003, Ruslan Ermilov wrote: >=20 > > On Fri, Jul 25, 2003 at 01:41:33AM -0600, Scott Long wrote: > > > Ruslan Ermilov wrote: > > > >Which reminds me. The floppy wasn't overflowing when building > > > >5.x snapshot on 4.x, due to the differences in file system > > > >layout between 4.x and 5.x. Please see the attached if you're > > > >interested. > > > ... > > > Now that -O2 is the default for newfs in 5-current, does the 'Oflag = =3D=3D > > > 2' trick still work? > > > > > Yes it does: > > > > 1. doFS.sh creates file systems with -O1 > > 2. The patch affects the -O1 case: > > > > > Even if it does, it feels like a hack to me. I'd > > > rather that newfs have an option to directly override the number of > > > c/g's, rather than rely on indirect calculations and magic constants. > > > > > *Shrug*, an option to override a minimum value? > > > > > Please don't commit this until we have discussed it more. >=20 > I think the 'Oflag =3D=3D 2' trick is a hack to avoid touching the -O2 ca= se, > since the -O2 implementors haven't responded and others don't have enough > experience with -O2 to know what is right. OTOH, with -O1 it is well > known that you can't have too few cylinder groups except possibly for > unuseful disk sizes like 40MB, so removing the limit just fixes a bug. > Anyway, there was no limit in until recently, so we have lots of practical > experience with using 1 cylinder group. >=20 Yes, this is exactly the case. Kirk never responded, and I was not sure about the -O2 case. Cheers, --=20 Ruslan Ermilov Sysadmin and DBA, ru@sunbay.com Sunbay Software Ltd, ru@FreeBSD.org FreeBSD committer --yLVHuoLXiP9kZBkt Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQE/Iq+nUkv4P6juNwoRAkPoAJ9+dxcnryGZC2/+roWOHblxU07UngCghe6i QfU5ZK9DcSanCtf2hJmmR60= =ggzf -----END PGP SIGNATURE----- --yLVHuoLXiP9kZBkt--
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