From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:33045) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SPXRC-0005rC-SI for qemu-devel@nongnu.org; Wed, 02 May 2012 07:09:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SPXR8-00013o-6V for qemu-devel@nongnu.org; Wed, 02 May 2012 07:09:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37127) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SPXR7-000139-UX for qemu-devel@nongnu.org; Wed, 02 May 2012 07:09:34 -0400 Message-ID: <4FA115CE.5010008@redhat.com> Date: Wed, 02 May 2012 13:09:02 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1335448165-26174-1-git-send-email-borntraeger@de.ibm.com> <1335448165-26174-2-git-send-email-borntraeger@de.ibm.com> <4F9AC55F.5000101@redhat.com> <4FA109F6.3090107@de.ibm.com> <4FA10B9F.9040909@redhat.com> <4FA1117F.3070908@de.ibm.com> <4FA1155A.6080400@suse.de> In-Reply-To: <4FA1155A.6080400@suse.de> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 1/3] Fix geometry sector calculation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alexander Graf Cc: Heinz Graalfs , Markus Armbruster , qemu-devel , Christian Borntraeger , Jens Freimann , Cornelia Huck , wein@linux.vnet.ibm.com, Christoph Hellwig Il 02/05/2012 13:07, Alexander Graf ha scritto: > Both can be accessed using virtio-blk-s390. The former have the same > semantics on geometry as what we're used to. They use normal MBRs and > essentially the geometry doesn't mean too much these days anymore ;). > However, if possible, I would like to diverge these as little as > possible from x86 virtio disks. If anything, the geometry should be guessed like we do on x86. > For DASD disks, the geometry is important, as its disk label is usually > not MBR, but something s390 specific. Can we use this to guess the geometry like we do on x86? Paolo