Date: Sat, 20 Sep 2003 11:53:41 +0200 From: Guy Van Sanden <n.b@myrealbox.com> To: Greg 'groggy' Lehey <grog@freebsd.org> Cc: freebsd-questions@freebsd.org Subject: Re: Disklabe oddity Message-ID: <1064051620.9794.24.camel@cronos.home.vsb> In-Reply-To: <20030920085940.GK16686@wantadilla.lemis.com> References: <1064047468.9788.14.camel@cronos.home.vsb> <20030920085940.GK16686@wantadilla.lemis.com>
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Thanks you for your very complete answer Greg On Sat, 2003-09-20 at 10:59, Greg 'groggy' Lehey wrote: > [Format recovered--see http://www.lemis.com/email/email-format.html] > > Output wrapped. > > On Saturday, 20 September 2003 at 10:44:28 +0200, Guy Van Sanden wrote: > > I get a strange message from disklabel: <snip> > > What does this mean? > > Well, as it says, your c partition doesn't start at 0, so it also > can't cover the whole unit: > > # size offset fstype [fsize bsize bps/cpg] > c: 78156162 63 unused 0 0 # (Cyl. 0*-4864*) > > What part of that don't you understand? > I don't understand how this happened, as I used the sysinstall menus to lay-out the disk > > The disk was formatted by the FreeBSD install procedure. > > If you haven't changed anything here, it would be interesting to know > in more detail just what you did. To judge by the surprising number > of partitions, you didn't take the defaults. I just created seperate partitions for / /tmp /var /usr etc. The c partition was created by FreeBSD on its own. Could this be a BIOS problem, my system BIOS predates that size of disks by far? > > > The system is an older Digital PC (3500) PII 333 Mhz. > > The disk is a 40 GB IDE drive (WD) > > > > BTW, I'm looking for a safe way to 'grow' my rootfs, I've looked > > arround before, but I'm still not clear on the right procedure for > > it. > > Take a look at growfs(8). To do it right, you need space directly > behind the root file system. Even Vinum won't help here. You could > move the swap space elsewhere, for example. I'm looking at that option, lucky that I have a second disk with rsynced mirrors of all partitions on the first one. I can just remove /home and /data and copy them back later. Perhaps I can add the swap space to / and create a new swap further back on the disk. > > > I'm considering reinstalling the system with 5.2, reformatting the > > disk, > > There's seldom a reason either to reinstall or to reformat. If you > don't want anything of the current installation, reinstallation may be > faster, however. > > > but I don't know if this will clear the error. > > You can clear the error by running disklabel -e /dev/ad0s1a in single > user mode, and changing the length and offset of partition c (offset > 0, add 63 to the size). I wanted to try this on the mirror disk first, it also shows the offset at 63 using disklabel -r Yet doing disklabel -e on it shows the offset at 0 8 partitions: # size offset fstype [fsize bsize bps/cpg] a: 327680 0 4.2BSD 2048 16384 20488 # (Cyl. 0 - 325*) b: 1007984 327680 swap # (Cyl. 325*- 1325*) c: 80418177 0 unused 0 0 # (Cyl. 0 - 79779*) d: 1007616 1335664 4.2BSD 2048 16384 62984 # (Cyl. 1325*- 2324*) e: 1024000 2343280 4.2BSD 2048 16384 64008 # (Cyl. 2324*- 3340*) f: 18120704 3367280 4.2BSD 2048 16384 28552 # (Cyl. 3340*- 21317*) g: 20971520 21487984 4.2BSD 2048 16384 28552 # (Cyl. 21317*- 42122*) h: 37958673 42459504 4.2BSD 2048 16384 28552 # (Cyl. 42122*- 79779*) > > Greg > -- > When replying to this message, please copy the original recipients. > If you don't, I may ignore the reply or reply to the original recipients. > For more information, see http://www.lemis.com/questions.html > See complete headers for address and phone numbers
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