From owner-freebsd-geom@FreeBSD.ORG Wed Jul 24 11:09:49 2013 Return-Path: Delivered-To: freebsd-geom@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id ACAB8A7 for ; Wed, 24 Jul 2013 11:09:49 +0000 (UTC) (envelope-from prvs=1917699425=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 50B8029F7 for ; Wed, 24 Jul 2013 11:09:48 +0000 (UTC) Received: from r2d2 ([82.69.141.170]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50005125710.msg for ; Wed, 24 Jul 2013 12:09:46 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Wed, 24 Jul 2013 12:09:46 +0100 (not processed: message from valid local sender) X-MDDKIM-Result: neutral (mail1.multiplay.co.uk) X-MDRemoteIP: 82.69.141.170 X-Return-Path: prvs=1917699425=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-geom@FreeBSD.org Message-ID: <066EB1F973D44AAC951D4D47C577266F@multiplay.co.uk> From: "Steven Hartland" To: "Karl Pielorz" , References: <512DC7C043034F891F1012DA@Mail-PC.tdx.co.uk> Subject: Re: TRIM or no TRIM? Date: Wed, 24 Jul 2013 12:10:18 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jul 2013 11:09:49 -0000 ----- Original Message ----- From: "Karl Pielorz" > --On 24 July 2013 11:07 +0100 Steven Hartland > 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 > > '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... I'm guessing that the software raid your using doesn't support TRIM then Have you considered switching to ZFS based install, which does support TRIM in 9.2, 9/stable and 8/stable? Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.