From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtprelay0179.hostedemail.com ([216.40.44.179]:51797 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755501AbbEUO3z (ORCPT ); Thu, 21 May 2015 10:29:55 -0400 Received: from smtprelay.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by smtpgrave07.hostedemail.com (Postfix) with ESMTP id 6B84B11B639 for ; Thu, 21 May 2015 14:23:01 +0000 (UTC) Message-ID: <555DEA42.8020209@nellans.org> Date: Thu, 21 May 2015 09:22:58 -0500 From: David Nellans MIME-Version: 1.0 Subject: Re: Urgent problem while using Fio to test random write performance References: <555D9487.3040104@cnnic.cn> In-Reply-To: <555D9487.3040104@cnnic.cn> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: fio-owner@vger.kernel.org List-Id: fio@vger.kernel.org To: Nan WANG , fio@vger.kernel.org you're randwrite to a raw partition. if you had a filesystem on that partition you were trying to use, then well, your data is gone/corrupted. without a filesystem on it, i'm not sure how you'd think that your disc usage has become "100%" without some xgui widgit warning you, so seems likely you did something you didn't mean to with regards to writing to /dev/sdb1 directly if you use fio on devices/partitions with a filesystem, you need to have it write to files or it will trash your filesystem On 05/21/2015 03:17 AM, Nan WANG wrote: > hi all~ > I wanted to use fio to test random write performance, the command > line is as forllowing: > > fio --filename=/dev/sdb1 --direct=1 --iodepth 1 --thread > --rw=randwrite --ioengine=psync --bs=16k --size=200G --numjobs=10 > --runtime=1000 --group_reporting --name=mytest > > After the execution of fio finished, my disc usage become 100%, is > there any method to release the content written by Fio? > > Thanks a lot in advance!! >