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Date:      Mon, 20 Dec 2010 15:29:30 -0800
From:      Chuck Swiger <cswiger@mac.com>
To:        Alexander Best <arundel@freebsd.org>
Cc:        freebsd-current@freebsd.org
Subject:   Re: two ata write chaching request
Message-ID:  <3B3E7B72-C7C6-46F4-9DD9-0D82194FE068@mac.com>
In-Reply-To: <20101220231005.GA68477@freebsd.org>
References:  <20101220231005.GA68477@freebsd.org>

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On Dec 20, 2010, at 3:10 PM, Alexander Best wrote:
> 1) write caching to be turned on and off for individual hdds
>   (i.e. hw.ata.X.wc) and
> 2) to be able to turn write chaching on and off on the fly.

NetBSD's dkctl allows one to enable and disable read or write caches on a per-device basis, on the fly.  Presumably atacontrol or whatever the new ada / ACHI driver uses for control would be the FreeBSD equivalent....

Regards,
-- 
-Chuck




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