mpt(4) cuts 3TiB drives down to 2TiB

[Michael Reifenberger]

On Sun, 8 May 2011, Artem Belevich wrote:

> Date: Sun, 8 May 2011 12:31:28 -0700
> From: Artem Belevich <art at freebsd.org>
> To: Michael Reifenberger <mike at reifenberger.com>
> Cc: FreeBSD-SCSI <scsi at freebsd.org>
> Subject: Re: mpt(4) cuts 3TiB drives down to 2TiB
> 
> On Sun, May 8, 2011 at 5:13 AM, Michael Reifenberger
> <mike at 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
>

Yes. Seems so.
For me its a documented bug though.

Hopefully the will revise this misbehaviour...

Bye/2
---
Michael Reifenberger
Michael at Reifenberger.com
http://www.Reifenberger.com