From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Samuel <chris@csamuel.org>
Subject: Re: brtfs on top of dmcrypt with SSD. No corruption iff write cache off?
Date: Thu, 16 Feb 2012 17:33:19 +1100
Message-ID: <201202161733.25977.chris@csamuel.org>
References: <20120130003754.GD4380@merlins.org> <4F384FAA.5060506@redhat.com> <20120213001400.GD31989@merlins.org>
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On Monday 13 February 2012 11:14:00 Marc MERLIN wrote:

> I knew that it created some security problems but I had not yet
> found the page you just gave, which effectively states that TRIM
> isn't actually that big a win on recent SSDs (I thought it was
> actually pretty important to use it on them until now).

In addition TRIM has always been problematic for SATA SSD's as it was=20
initially specified as a non-queueable command:

https://lwn.net/Articles/347511/

However, it appears that a queueable TRIM command has been introduced=20
for SATA 3.1:

http://techreport.com/discussions.x/21311

cheers!
Chris
=2D-=20
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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