Date: Mon, 13 Sep 2004 16:33:57 -0600 (MDT) From: Scott Long <scottl@freebsd.org> To: Rainer Duffner <rainer@ultra-secure.de> Cc: current@freebsd.org Subject: Re: max. partition size on 5.x Message-ID: <20040913163322.V59291@pooker.samsco.org> In-Reply-To: <41461A9F.50707@ultra-secure.de> References: <20040913210213.84966.qmail@web14106.mail.yahoo.com> <20040913212927.GA16741@odin.ac.hmc.edu> <41461A9F.50707@ultra-secure.de>
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On Tue, 14 Sep 2004, Rainer Duffner wrote: > Brooks Davis wrote: > > >On Mon, Sep 13, 2004 at 11:02:13PM +0200, Claus Guttesen wrote: > >> Hi. > >> > >> Not shure whether this is the right place to ask, but > >> I haven't found other sources of information. > >> > >> I deployed a beta3-nfs-server which works fine. Two > >> IDE-to-SCSI-cabinets are connected to the server using > >> an aic7899-controller. The first cabinet has approx. 2 > >> TB (12 disks at 200 GB, as expected). When I connected > >> the second cabinet using 250 GB disks, I exptected > >> approx. 2.5 TB, but only saw 764 GB. > >> > >> Is there any limit that is imposed by 5.x in terms of > >> max. partition size? This is running on a Compaq DL > >> 380 dual PIII (G2) with 3 GB RAM, microstorage > >> cabinet. > >> > >> The raid-system became visible by the usual > >> 'camcontrol rescan all' and I used 'fdisk -I /dev/da2' > >> and 'disklabel -w /dev/da2s1'. > > > >The limit on the size of a disk is unreachable, but we have a lack of > >good partitioning tools at the moment. bsdlabel (the program formerly > >known as disklabel) is limited to 2TB. Sunlabel appears to be limited > >to 16TB in 2TB partitions and fdisk is limited to 2TB due to bugs in > >the program and 4TB due to the actual format. If you don't need to > >boot off the slice, you may wish to try gpt(8) which should support > >any disk money can buy, but which we can't currently boot off of GPT > >partitions. I'm in the process of getting some documentation on this in > >to the handbook. > > > > > > That would be a good idea. > The data in the handbook is seriously outdated (when was 3.0 "current"?). > (I wanted to file a PR, I swear, but that day the FreeBSD-website was > down and later I forgot...<g>) > > The question has come-up in various lists and newsgroup the last couple > of weeks. > As IDE2SCSI RAIDs are getting increasingly cheap and big, this problem > will show-up more often than not in the future. > > > A howto for gpt would also be good. > Not that I need one now, but now that 1GB mail-storage has come en vogue.... > > > > cheers, > Rainer > See http://www.freebsd.org/projects/bigdisk. It's not complete yet by any means, but it gives some useful info. Scott
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