From owner-freebsd-hackers Mon Mar 5 16:45:34 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from earth.backplane.com (earth-nat-cw.backplane.com [208.161.114.67]) by hub.freebsd.org (Postfix) with ESMTP id C324A37B71A for ; Mon, 5 Mar 2001 16:45:31 -0800 (PST) (envelope-from dillon@earth.backplane.com) Received: (from dillon@localhost) by earth.backplane.com (8.11.2/8.9.3) id f260jJg47532; Mon, 5 Mar 2001 16:45:19 -0800 (PST) (envelope-from dillon) Date: Mon, 5 Mar 2001 16:45:19 -0800 (PST) From: Matt Dillon Message-Id: <200103060045.f260jJg47532@earth.backplane.com> To: Greg Lehey Cc: Warner Losh , sthaug@nethelp.no, freebsd-hackers@FreeBSD.ORG Subject: Re: Missing support in FreeBSD for large file sizes? References: <13458.983813064@verdi.nethelp.no> <200103060023.f260Nrd24686@harmony.village.org> <20010306110821.H13082@wantadilla.lemis.com> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :In fact, at the moment we don't seem to be able to build file systems :of more than 1 TB. This may be a bug. : :Greg 2^31 x 512 = 1TB (negative block numbers are 'special'). Not really a bug. Though I seem to recall a year or two ago someone had created a much larger partition, I'm not quite sure how it could have worked. As far as I understand the system we convert a block numbers to 512 byte blocks at the device layer so even FFS filesystems w/ large block sizes wouldn't be sufficient to get past the kernel limitation. We just have to convert everything to 64 bit offsets all the way through, especially with 500GB+ drives coming to market probably this year sometime. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message