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Date: Thu, 15 Sep 2011 07:06:10 -0700 (PDT)
From: Tim Gustafson <tjg@soe.ucsc.edu>
To: Matt Thyer <matt.thyer@gmail.com>
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Cc: Adrian Chadd <adrian@freebsd.org>, freebsd-current@freebsd.org
Subject: Re: RELENG_8 / mpt / zpool Errors
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> The SAS 2008 chip (SAS 6G) is the one that the FreeBSD mps driver has
> problems with when used with port expanders. It's the older SAS 3G chip
> that works OK with FreeBSD I think.

I had crossed some wires earlier on in our discussion.

We do have a SAS 2008 chip in the system already, but it's not the one that's running the external disk boxes (and we are having no problem with those drives).  The external disk boxes (the ones that are having the problems) are connect through an LSI SAS 3801E, which is handled by the mpt driver.  The mpt driver is what's giving us trouble right now.

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Tim Gustafson                                                tjg@soe.ucsc.edu
Baskin School of Engineering                                     831-459-5354
UC Santa Cruz                                         Baskin Engineering 317B
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