From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 86FA17CBF for ; Mon, 16 Mar 2015 01:00:27 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay1.corp.sgi.com (Postfix) with ESMTP id 61E198F804C for ; Sun, 15 Mar 2015 23:00:27 -0700 (PDT) Received: from ipmail04.adl6.internode.on.net (ipmail04.adl6.internode.on.net [150.101.137.141]) by cuda.sgi.com with ESMTP id MTw4x2ebXcXQ0N2W for ; Sun, 15 Mar 2015 23:00:23 -0700 (PDT) Date: Mon, 16 Mar 2015 17:00:20 +1100 From: Dave Chinner Subject: [ANNOUNCE] xfs: Supporting Host Aware SMR Drives Message-ID: <20150316060020.GB28557@dastard> MIME-Version: 1.0 Content-Disposition: inline List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com Cc: linux-fsdevel@vger.kernel.org Hi Folks, As I told many people at Vault last week, I wrote a document outlining how we should modify the on-disk structures of XFS to support host aware SMR drives on the (long) plane flights to Boston. TL;DR: not a lot of change to the XFS kernel code is required, no specific SMR awareness is needed by the kernel code. Only relatively minor tweaks to the on-disk format will be needed and most of the userspace changes are relatively straight forward, too. The source for that document can be found in this git tree here: git://git.kernel.org/pub/scm/fs/xfs/xfs-documentation in the file design/xfs-smr-structure.asciidoc. Alternatively, pull it straight from cgit: https://git.kernel.org/cgit/fs/xfs/xfs-documentation.git/tree/design/xfs-smr-structure.asciidoc Or there is a pdf version built from the current TOT on the xfs.org wiki here: http://xfs.org/index.php/Host_Aware_SMR_architecture Happy reading! Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs