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Date:      Wed, 4 Sep 2019 17:43:36 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Allan Jude <allanjude@freebsd.org>, Alan Somers <asomers@freebsd.org>
Cc:        src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-head <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r351812 - head/usr.sbin/mpsutil
Message-ID:  <3459cda5-c1e3-8019-625b-90dea3b986e5@FreeBSD.org>
In-Reply-To: <8edfc58e-21c8-3233-2167-2d83af6c3a5f@freebsd.org>
References:  <201909041347.x84Dlcds017291@repo.freebsd.org> <CAOtMX2h7tNjawCNcMO_GzBe62YUO8TRb2rP1ERakPr_rW8mFFA@mail.gmail.com> <8edfc58e-21c8-3233-2167-2d83af6c3a5f@freebsd.org>

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On 04/09/2019 17:21, Allan Jude wrote:
> mpsutil's method will work on direct-attach backplanes and enclosures,
> where sesutil only works if there is an expander that provides the SES
> service.

I think that theoretically a controller (its firmware) can emulate a SES device
for a directly attached enclosure (that does not have a built-in expander too).
I believe that some controllers actually do that.  But maybe I am wrong.
And even if I am not, not all controllers do that.


-- 
Andriy Gapon



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