Date: Mon, 13 Mar 2006 12:44:40 -0800 From: Glenn Dawson <glenn@antimatter.net> To: Jerry McAllister <jerrymc@clunix.cl.msu.edu>, m.oe@x-trader.de (Markus Oestreicher) Cc: freebsd-questions@freebsd.org Subject: Re: Adding partition Message-ID: <7.0.1.0.2.20060313124113.068a2d00@antimatter.net> In-Reply-To: <200603132027.k2DKRTA4020286@clunix.cl.msu.edu> References: <44154F3A.2050603@x-trader.de> <200603132027.k2DKRTA4020286@clunix.cl.msu.edu>
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At 12:27 PM 3/13/2006, Jerry McAllister wrote: > > > > Good Day, > > > > There is free space at the end of my disk and I want to move > > /usr/ports do a dedicated partition. > > > > # disklabel /dev/ad10s1 > > # /dev/ad10s1: > > 8 partitions: > > # size offset fstype [fsize bsize bps/cpg] > > a: 1024000 0 4.2BSD 2048 16384 64008 > > b: 2252800 44032000 swap > > c: 368627427 0 unused 0 0 # "raw" > > d: 2048000 1024000 4.2BSD 2048 16384 28552 > > e: 20480000 3072000 4.2BSD 2048 16384 28552 > > f: 20480000 23552000 4.2BSD 2048 16384 28552 > > > > I want to add a g partition with 10 GByte to end. > > > > When I enter "disklabel -e /dev/ad10s1" vi opens and I add > > the following line to the end: > > > > g: 20480000 44032000 4.2BSD 2048 16384 28552 > > > > Upon saving I get an error that partitions "c" and "g" overlap. > > As far as I have read this is on purpose. How can I avoid the > > error message? > >I don't know why it would say that c and g overlap, but you have >forgot to include the space used for swap in the offset. >Your offset should really be 46284800. > >I have heard that some people think you should put your swap at the >highest address, but I don't think that applies in any significant >way to modern drives. I could be wrong on that, though. On some current drives, I've seen differences in sustained throughput of up to 2 to 1 when comparing the beginning of the disk and the end of the disk. The beginning of the disk being faster. -Glenn >Anyway, using the partition labels out of order does lead to confusion >and errors in calculations - in my experience. > >By the way, did you notice that you can use '*' in the offset field and >bsdlabel (or disklabel since 4.xx) will calculate it for you. You can >even put a '*' in the last partition (highest address) size AND offset >fields and bsdlabel will calculate it for you. > >I also wonder at your keeping such a large chunk of the FreeBSD slice >unallocated that way. Now, if you had reduced the slice, I would think >you were saving it for another OS. But it is already in FreeBSD space >so just put it all in g: But, to each their own. > >////jerry > > > > > I tried it via sysinstall but didn't work either. When saving > > the new disklabels I get "Unable to write data to disk ad10". > > I assume that is because ad10 is currently mounted? > > > > Thank you! > > > > Markus > > > > > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > > > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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