From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <5363AE9C.7040505@kernel.dk> Date: Fri, 02 May 2014 08:41:32 -0600 From: Jens Axboe MIME-Version: 1.0 Subject: Re: Recent changes (master) References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: Ajoy Aswadhati , fio@vger.kernel.org List-ID: On 05/02/2014 08:36 AM, Ajoy Aswadhati wrote: > Hi Jens, > With the new io_limit option, is it possible to do the following: > Have the disk size be 1TB and use 1GB file size and make it use the 1TB > space randomly and not confine to the first 1GB. > I.e. Use the entire disk in a sparse and random order repeatedly for n > iterations. If yes can you provide a config. On the raw disk, you can do that with size=1tb io_limiut=1gb and add loops=x for however many iterations you want. If you mean from a file system, then you would need a 1TB file to achieve (roughly) the same thing. Not sure what you mean here, but are you referring to multiple 1GB files? -- Jens Axboe