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Date: Wed, 24 Jul 2013 11:43:25 +0100
From: Karl Pielorz <kpielorz_lst@tdx.co.uk>
To: Steven Hartland <killing@multiplay.co.uk>, freebsd-geom@FreeBSD.org
Subject: Re: TRIM or no TRIM?
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--On 24 July 2013 11:07 +0100 Steven Hartland <killing@multiplay.co.uk> 
wrote:

> 9.1 is a bit old, 9.2-BETA1 or 9/stable will be able to tell you if
> indeed your SSD is reporting TRIM via:
> camcontrol identify <disk>

'bit old'? - if only freebsd-update handled updating to 'stable' (unless it 
does?).

Anyway, the camcontrol runs on this ancient 9.1 system ;) and shows:

"
  data set management (TRIM)     yes
"

So it is supported by the drive - remembering the file system is mounted 
from '/dev/raid/r0' - i.e. not the actual underlying drive). But everything 
I've seen about geom etc. indicates on this version is should support 
'trim' - it may well even be using it, but with the warning logged about 
'disk does not confirm that it supports trim' - I'd rather be sure...

-Karl