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Date: Tue, 19 Dec 2006 01:52:37 -0500
From: Scott Long <scottl@samsco.org>
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To: Rong-en Fan <grafan@gmail.com>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: bigdisk and scsi_da
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Rong-en Fan wrote:
> It seems to me that scsi_da.c reports the wrong size:
> 
> da1 at mpt0 bus 0 target 0 lun 0
> da1: <SILVER TN-6212S-U4D 347G> Fixed Direct Access SCSI-5 device
> da1: 320.000MB/s transfers (160.000MHz, offset 127, 16bit), Tagged
> Queueing Enabled
> da1: 0MB (1 0 byte sectors: 0H 0S/T 0C)
> 
> While geom shows the right one:
> 
> Geom name: da1
> Providers:
> 1. Name: da1
>   Mediasize: 4991221760000 (4.5T)
>   Sectorsize: 512
>   Mode: r0w0e0
>   fwsectors: 63
>   fwheads: 255
> 

XPT_CALC_GEOMETRY is failing when the disk is being probed.  This
is likely a problem with the MPT driver.  However, I'd need some
time to think through all of the code in order to be sure.

Scott