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Date:      Thu, 21 Feb 2002 15:12:31 -0700
From:      "Justin T. Gibbs" <gibbs@scsiguy.com>
To:        =?ISO-8859-1?Q?G=E9rard_Roudier?= <groudier@free.fr>
Cc:        Kelly Yancey <kbyanc@posi.net>, Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de>, freebsd-scsi@FreeBSD.ORG
Subject:   Re: RBC support patch 
Message-ID:  <200202212212.g1LMCVI52438@aslan.scsiguy.com>
In-Reply-To: Your message of "Thu, 21 Feb 2002 00:06:10 %2B0100." <20020220235751.M2119-100000@gerard> 

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>
>This will uselessly run the risk of hurting some direct access devices
>that are known to have to support either from specs or just by need
>READ(10)/WRITE(10).

Then flip the logic (10 then 6).  These devices are supposed to report
that the command is not supported.  All indications I have is that the
newer drives do.  Older drives just fall of the bus and die if you
send a 10byte cdb.

>Anyway the *(10) commands are NOT functionnally equivalent to *(10)
>function as you know.

Right.  Look at the code that builds these commands.  The smallest command
type that can satisfy a given request is used.  You can optionally set
a minimum command type size too.

>May-be you just want to have best possible support for hard disks < 1GB.

They work fine now.  Why break them?

--
Justin

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