Date: Mon, 9 May 2011 20:27:12 +0200 (CEST) From: Michael Reifenberger <mike@reifenberger.com> To: "Kenneth D. Merry" <ken@freebsd.org> Cc: FreeBSD-SCSI <scsi@freebsd.org> Subject: Re: mpt(4) cuts 3TiB drives down to 2TiB Message-ID: <alpine.BSF.2.00.1105092025230.5116@gw.reifenberger.com> In-Reply-To: <20110508232405.GA84267@nargothrond.kdm.org> References: <alpine.BSF.2.00.1105081401080.92495@gw.reifenberger.com> <BANLkTikGH6iDLZTztxg13qzxPiazQ5VYBA@mail.gmail.com> <20110508232405.GA84267@nargothrond.kdm.org>
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On Sun, 8 May 2011, Kenneth D. Merry wrote: > Date: Sun, 8 May 2011 17:24:05 -0600 > From: Kenneth D. Merry <ken@freebsd.org> > To: Artem Belevich <art@freebsd.org> > Cc: Michael Reifenberger <mike@reifenberger.com>, > FreeBSD-SCSI <scsi@freebsd.org> > Subject: Re: mpt(4) cuts 3TiB drives down to 2TiB > > On Sun, May 08, 2011 at 12:31:28 -0700, Artem Belevich wrote: >> On Sun, May 8, 2011 at 5:13 AM, Michael Reifenberger >> <mike@reifenberger.com> wrote: >>> Hi, >>> the manpage of mptutil states that mpt(4) doesn't support volumes greater >>> 2TiB, >>> it suggests to use the disks in JBOD mode. >>> >>> Even this seems only to work for disk with less than 2TiB. >>> >>> When attaching a Hitachi 7k3000 drive on the LSI SAS/SATA ports of a >>> Supermicro X8ST3-F board I only see 4294967294 sectors while I get 976773168 >>> sectors when >>> attaching to the on board SATA ports. >>> >>> This leaves the onboard LSI controller useless for bigger disks. >>> >>> Is there a way to work around this issue? >>> >>> Or is anybody working on enhancing the mpt(4) driver to use the newer API? >> >> According to LSI, it's a 'feature'. Controllers based on >> LSI1068/1068e (X8ST3-F uses LSI 1068E) truncate drive capacity to >> 2TB: >> http://kb.lsi.com/KnowledgebaseArticle16399.aspx > > I have heard from a friend (i.e. I haven't personally confirmed) that the > capacity truncation only applies to SATA drives. If you attach a 3TB SAS > drive, you should be able to see the full capacity. > I can't confirm either since I have no 3TB SAS drives currently. Thanks for hinting! Bye/2 --- Michael Reifenberger Michael@Reifenberger.com http://www.Reifenberger.com
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