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Date:      Sun, 25 Nov 2001 20:49:11 -0700
From:      "Justin T. Gibbs" <gibbs@scsiguy.com>
To:        Ian Dowse <iedowse@FreeBSD.org>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/cam/scsi scsi_da.c 
Message-ID:  <200111260349.fAQ3nBY40709@aslan.scsiguy.com>
In-Reply-To: Your message of "Sat, 17 Nov 2001 09:43:06 PST." <200111171743.fAHHh6R74448@freefall.freebsd.org> 

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>iedowse     2001/11/17 09:43:06 PST
>
>  Modified files:
>    sys/cam/scsi         scsi_da.c 
>  Log:
>  The Infortrend IFT-3102 multihost U2 SCSI to U2 SCSI controller
>  doesn't support the synchronise cache command.
>  
>  PR:             kern/21752

If you look in the PR, the controller properly reports that the
sync cache command is unsupported.  Quirks should only be used
for devices that catastrophically fail when a sync cache command
is sent.  This also gives us the oportunity to *fix* whatever is
wrong with the code in the da driver that should silenty accept
a properly rejected sync cache command.  I've looked at the code
a few times to try and figure out why it fails to stay silent, but
have never figured it out.  Perhaps you or Nick Colakovic can use
your fresh eyes to figure out the bug in the code.

--
Justin

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