Date: Wed, 20 Mar 2002 11:28:41 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: David Greenman <dg@root.com> Cc: "Steve O'Hara-Smith" <steve@sohara.org>, mrcpu@internetcds.com, clash@tasam.com, questions@FreeBSD.ORG, stable@FreeBSD.ORG Subject: Re: Problems with large disk. (> 1 TB) Message-ID: <200203201928.g2KJSfZ85089@apollo.backplane.com> References: <20020319131556.D99985@backmaster.cdsnet.net> <008901c1cf8c$be5d6f50$090510ac@gleason> <00b401c1cf8d$8960b7c0$090510ac@gleason> <20020319202137.U68606@backmaster.cdsnet.net> <20020320081439.74ca4530.steve@sohara.org> <20020319232049.W75496@nexus.root.com> <20020320190727.1cb65fac.steve@sohara.org> <20020320110647.A96231@nexus.root.com>
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:> I thought fdisk slices were separate devices to FreeBSD so it should :>be possible to put 1TB on each. Where did I go wrong this time, does FreeBSD :>need to see the whole drive as a single device too ? : : They're only seperate devices in the same sense that a different partition :is a different device. In both cases this is just a software abstraction. :FreeBSD internally calculates an offset within the whole disk when individual :slices/partitions are accessed, so the underlying whole device must be less :that 1TB as well. Fixing this requires updating the kernel all the way from :the device drivers to the highest levels in the kernel, and even some system :applications. : :-DG : :David Greenman :Co-founder, The FreeBSD Project - http://www.freebsd.org I don't know if we will ever be able to fix this in -stable, but Kirk is planning on changing block numbers from 32 to 64 bits in -current as part of his UFS64 work. I don't think he's tackled the disklabel issue yet, but I presume that he will. Until then we are effectively limited to 1TB of physical storage per logical drive. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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