From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Borntraeger Subject: 4.4 regression/bisected: error message due to "block/sd: Fix device-imposed transfer length limits" Date: Wed, 13 Jan 2016 14:15:12 +0100 Message-ID: <56964DE0.60407@de.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from e06smtp15.uk.ibm.com ([195.75.94.111]:60280 "EHLO e06smtp15.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932730AbcAMNPS (ORCPT ); Wed, 13 Jan 2016 08:15:18 -0500 Received: from localhost by e06smtp15.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 13 Jan 2016 13:15:17 -0000 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: "Martin K. Petersen" Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, dm-devel@redhat.com Martin, with 4.4 I get messages like device-mapper: table: 253:4: adding target device sdq caused an alignment inconsistency: physical_block_size=4096, logical_block_size=512, alignment_offset=0, start=0 when I use device mapper multipath on a scsi disk on a FlashSystem-9840 scsi disk. The disk has a quite interesting layout (physical block size=4k, logical=512) blockdev --getbsz /dev/sdq 4096 blockdev --getss /dev/sdq 512 blockdev --getpbsz /dev/sdq 4096 the disks seems to work ok, though. Any ideas? Christian