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

Artem Belevich art at
Sun May 8 20:01:30 UTC 2011

On Sun, May 8, 2011 at 5:13 AM, Michael Reifenberger
<mike at> 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


> Thanks in advance!
> Bye/2
> ---
> Michael Reifenberger
> Michael at
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