From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755365Ab0JRM2S (ORCPT ); Mon, 18 Oct 2010 08:28:18 -0400 Received: from mx1.redhat.com ([209.132.183.28]:3907 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754188Ab0JRM2Q (ORCPT ); Mon, 18 Oct 2010 08:28:16 -0400 Message-ID: <4CBC3DAC.4090100@redhat.com> Date: Mon, 18 Oct 2010 08:29:32 -0400 From: Ric Wheeler User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100921 Fedora/3.1.4-1.fc13 Lightning/1.0b3pre Thunderbird/3.1.4 MIME-Version: 1.0 To: Peter Zijlstra CC: Lukas Czerner , Ric Wheeler , Jeff Moyer , Eric Sandeen , linux-kernel@vger.kernel.org Subject: Re: Discard benchmarking tool for SSD's and thinly provisioned devices References: <1287402474.29097.1551.camel@twins> In-Reply-To: <1287402474.29097.1551.camel@twins> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/18/2010 07:47 AM, Peter Zijlstra wrote: > On Mon, 2010-10-18 at 13:40 +0200, Lukas Czerner wrote: >> Also note that there might be some devices with buggy firmware which may >> be damaged beyond repair by the TRIM command, especially with TRIM >> performed in random IO pattern (from first-hand experience). > A list of known bad devices might be appreciated.. The challenge with naming devices that had issues is that some of them were early versions (not stable firmware) and some we got under NDA so we cannot name them... ric