From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH 3/3] scsi: Implement 'ZBC' device type Date: Mon, 2 Jun 2014 01:39:19 -0700 Message-ID: <20140602083919.GA31170@infradead.org> References: <1401692478-23557-1-git-send-email-hare@suse.de> <1401692478-23557-4-git-send-email-hare@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from bombadil.infradead.org ([198.137.202.9]:48618 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752309AbaFBIjU (ORCPT ); Mon, 2 Jun 2014 04:39:20 -0400 Content-Disposition: inline In-Reply-To: <1401692478-23557-4-git-send-email-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Hannes Reinecke Cc: James Bottomley , Christoph Hellwig , linux-scsi@vger.kernel.org On Mon, Jun 02, 2014 at 09:01:18AM +0200, Hannes Reinecke wrote: > ZBC (zoned block command aka 'SMR drives') devices will have > a new device type 0x14 assigned by T10. So add the necessary > mappings to sd.c and make it an alias for ATA ZAC devices. The libata changes should defintively be a separate one, the sd changes probably as well. But I'm uneasy with adding anything like this for now, for one the specs aren't even anywhere close to done, and second attaching ZBC devices in general doesn't sound like a very smart idea, we really need a strategy for the sequential required zones first.