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Date:      Thu, 9 Dec 2010 16:44:52 -0800
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Julian Elischer <julian@freebsd.org>
Cc:        Kirk McKusick <mckusick@mckusick.com>, pjd@freebsd.org, freebsd-fs@freebsd.org, Oliver Fromme <olli@lurza.secnetix.de>
Subject:   Re: TRIM support for UFS?
Message-ID:  <20101210004452.GA15765@icarus.home.lan>
In-Reply-To: <4D01731C.4070802@freebsd.org>
References:  <20101208225352.GK33073@deviant.kiev.zoral.com.ua> <201012082356.oB8NuxwX040914@chez.mckusick.com> <20101209103411.GL33073@deviant.kiev.zoral.com.ua> <4D01731C.4070802@freebsd.org>

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On Thu, Dec 09, 2010 at 04:23:56PM -0800, Julian Elischer wrote:
> On 12/9/10 2:34 AM, Kostik Belousov wrote:
> 
> [patch]
> 
> commit when ready.. I'm looking forwards to being able to try it out.

And how does one actually verify TRIM is working?  Most SSDs I've used
do not have a SMART attribute that can help determine this.  I would
rather not make a bunch of assumptions about Attributes 226, 232, or 233
to help give some indication of it working.

For folks to test this, there needs to be some indicator/verification
mechanism that it's working.

-- 
| Jeremy Chadwick                                   jdc@parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |




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