Date: Fri, 25 Jul 2003 01:41:33 -0600 From: Scott Long <scottl@freebsd.org> To: Ruslan Ermilov <ru@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/release/i386 drivers.conf Message-ID: <3F20DF2D.8030209@freebsd.org> In-Reply-To: <20030725053806.GA36982@sunbay.com> References: <200307250010.h6P0AYKW061085@repoman.freebsd.org> <20030725053806.GA36982@sunbay.com>
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Ruslan Ermilov wrote: > On Thu, Jul 24, 2003 at 05:10:33PM -0700, Scott Long wrote: > >>scottl 2003/07/24 17:10:33 PDT >> >> FreeBSD src repository >> >> Modified files: >> release/i386 drivers.conf >> Log: >> Move the mlx driver back into the kernel so that the drivers floppy doesn't >> overflow. >> >> Revision Changes Path >> 1.29 +0 -1 src/release/i386/drivers.conf >> > > 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. > > > Cheers, > > Now that -O2 is the default for newfs in 5-current, does the 'Oflag == 2' trick still work? 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. Please don't commit this until we have discussed it more. Scott > ------------------------------------------------------------------------ > > Subject: > Re: MINCYLGRPS (was: 4-stable releases on -current?) > From: > Ruslan Ermilov <ru@FreeBSD.org> > Date: > Wed, 12 Mar 2003 00:32:21 +0200 > To: > Poul-Henning Kamp <phk@FreeBSD.org>, Kirk McKusick <mckusick@FreeBSD.org> > > > Hey, is anybody ever going to answer this email? > > On Wed, Feb 26, 2003 at 02:48:10PM +0200, Ruslan Ermilov wrote: > >>On Tue, Feb 25, 2003 at 09:52:02PM +0200, Ruslan Ermilov wrote: >> >>>On Tue, Feb 25, 2003 at 08:02:19PM +0200, John Hay wrote: >> >>[...] >> >>>>Ok, with the patches below I can get to where it tries to build the >>>>fixit floppy in release.10. It breaks because the floppy is too small. >>>>I must still check to make sure it is true. >>>> >>> >>>We'll know this in less than 1:30 -- I've just launched the >>>snapshot build for 4.x/i386 on my fast -stable box. >>> >>>While I was writing it, it's already finished (successfully). >>> >>>ftp://ftp.sunbay.net/pub/FreeBSD/snapshots/i386/4.x-20030225-STABLE/ >>> >> >>OK, I've tracked it down to the differences in newfs(8) between >>4.x and 5.x. In 4.x, newfs'ing a 1.44MB floppy results in a >>single cylinder group, but in 5.x there's a thing called >>MINCYLGRPS, which results in fewer free space on a floppy: >> >>: # uname -r >>: 4.7-STABLE >>: # ./x >>: Warning: Block size restricts cylinders per group to 6. >>: Warning: 1216 sector(s) in last cylinder unallocated >>: /dev/vn0c: 2880 sectors in 1 cylinders of 1 tracks, 4096 sectors >>: 1.4MB in 1 cyl groups (6 c/g, 12.00MB/g, 384 i/g) >>: super-block backups (for fsck -b #) at: >>: 32 >>: Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on >>: /dev/vn0 1363 0 1363 0% 1 381 0% >> >>: # uname -r >>: 5.0-CURRENT >>: # ./x >>: /dev/md0c: 1.4MB (2880 sectors) block size 4096, fragment size 512 >>: using 4 cylinder groups of 0.36MB, 91 blks, 128 inodes. >>: super-block backups (for fsck -b #) at: >>: 32, 760, 1488, 2216 >>: Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on >>: /dev/md0 1311 0 1311 0% 1 509 0% >> >>With this patch to newfs(8), >> >>: Index: mkfs.c >>: =================================================================== >>: RCS file: /home/ncvs/src/sbin/newfs/mkfs.c,v >>: retrieving revision 1.74 >>: diff -u -p -r1.74 mkfs.c >>: --- mkfs.c 22 Feb 2003 23:26:11 -0000 1.74 >>: +++ mkfs.c 26 Feb 2003 11:20:57 -0000 >>: @@ -317,7 +317,7 @@ mkfs(struct partition *pp, char *fsys) >>: for ( ; sblock.fs_fpg < maxblkspercg; sblock.fs_fpg += sblock.fs_frag) { >>: sblock.fs_ipg = roundup(howmany(sblock.fs_fpg, fragsperinode), >>: INOPB(&sblock)); >>: - if (sblock.fs_size / sblock.fs_fpg < MINCYLGRPS) >>: + if (sblock.fs_size / sblock.fs_fpg < (Oflag == 2 ? MINCYLGRPS : 1)) >>: break; >>: if (CGSIZE(&sblock) < (unsigned long)sblock.fs_bsize) >>: continue; >> >>I still don't get the same picture as on 4.x, but it's now at least >>sufficient to make release.10 happy. >> >>: # ./x >>: /dev/md0c: 1.4MB (2880 sectors) block size 4096, fragment size 512 >>: using 1 cylinder groups of 1.41MB, 361 blks, 416 inodes. >>: super-block backups (for fsck -b #) at: >>: 32 >>: Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on >>: /dev/md0 1359 0 1359 0% 1 413 0% >> >>John, I'm sending you the complete patchset in another email. >> >> >>Cheers, >>-- >>Ruslan Ermilov Sysadmin and DBA, >>ru@sunbay.com Sunbay Software AG, >>ru@FreeBSD.org FreeBSD committer, >>+380.652.512.251 Simferopol, Ukraine >> >>http://www.FreeBSD.org The Power To Serve >>http://www.oracle.com Enabling The Information Age > > >>FSIMG=fixit.flp >>FSSIZE=1440 >>FSLABEL=fd1440 >>FSINODE=4000 >> >>dd of=${FSIMG} if=/dev/zero count=${FSSIZE} bs=1k 2>/dev/null >> >>case `uname -r` in >>4.*) >> DEVICE=vn0 >> vnconfig -s labels -c /dev/${DEVICE} ${FSIMG} >> ;; >>5.*) >> DEVICE=`mdconfig -a -t vnode -f ${FSIMG}` >> ;; >>esac >> >>disklabel -w -B ${DEVICE} ${FSLABEL} >>newfs -i ${FSINODE} -o space -m 0 /dev/${DEVICE}c >> >>#disklabel ${DEVICE} >>df -i /dev/${DEVICE} >> >>case `uname -r` in >>4.*) >> vnconfig -u ${DEVICE} >> ;; >>5.*) >> mdconfig -d -u ${DEVICE} >> ;; >>esac > > > > >
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