From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754965AbaAVHOy (ORCPT ); Wed, 22 Jan 2014 02:14:54 -0500 Received: from cantor2.suse.de ([195.135.220.15]:57579 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754438AbaAVHOt (ORCPT ); Wed, 22 Jan 2014 02:14:49 -0500 Message-ID: <52DF6FE7.2080901@suse.de> Date: Wed, 22 Jan 2014 08:14:47 +0100 From: Hannes Reinecke User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Ric Wheeler , linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, lsf-pc@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes References: <20131220093022.GV11295@suse.de> <52DF353D.6050300@redhat.com> <20140122052052.GM10565@ZenIV.linux.org.uk> In-Reply-To: <20140122052052.GM10565@ZenIV.linux.org.uk> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/22/2014 06:20 AM, Joel Becker wrote: > On Tue, Jan 21, 2014 at 10:04:29PM -0500, Ric Wheeler wrote: >> One topic that has been lurking forever at the edges is the current >> 4k limitation for file system block sizes. Some devices in >> production today and others coming soon have larger sectors and it >> would be interesting to see if it is time to poke at this topic >> again. >> >> LSF/MM seems to be pretty much the only event of the year that most >> of the key people will be present, so should be a great topic for a >> joint session. > > Oh yes, I want in on this. We handle 4k/16k/64k pages "seamlessly," and > we would want to do the same for larger sectors. In theory, our code > should handle it with the appropriate defines updated. > +1 The shingled drive folks would really love us for this. Plus it would make live really easy for those type of devices. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)