From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1C3FC46475 for ; Mon, 5 Nov 2018 10:25:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 709CF2086A for ; Mon, 5 Nov 2018 10:25:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 709CF2086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728972AbeKETom (ORCPT ); Mon, 5 Nov 2018 14:44:42 -0500 Received: from ozlabs.org ([203.11.71.1]:47385 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726186AbeKETom (ORCPT ); Mon, 5 Nov 2018 14:44:42 -0500 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPSA id 42pTN23jfvz9sCm; Mon, 5 Nov 2018 21:25:38 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au From: Michael Ellerman To: snitzer@redhat.com, axboe@kernel.dk, linuxppc-dev@lists.ozlabs.org, satheera@in.ibm.com Cc: Linus Torvalds , Linux Kernel Mailing List Subject: System not booting since dm changes? (was Linux 4.20-rc1) In-Reply-To: References: Date: Mon, 05 Nov 2018 21:25:35 +1100 Message-ID: <87tvkvddnk.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus Torvalds writes: ... > Mike Snitzer (1): > device mapper updates Hi Mike, Replying here because I can't find the device-mapper pull or the patch in question on LKML. I guess I should be subscribed to dm-devel. We have a box that doesn't boot any more, bisect points at one of: cef6f55a9fb4 Mike Snitzer dm table: require that request-based DM be layered on blk-mq devices 953923c09fe8 Mike Snitzer dm: rename DM_TYPE_MQ_REQUEST_BASED to DM_TYPE_REQUEST_BASED 6a23e05c2fe3 Jens Axboe dm: remove legacy request-based IO path It's a Power8 system running Rawhide, it does have multipath, but I'm told it was setup by the Fedora installer, ie. nothing fancy. The symptom is the system can't find its root filesystem and drops into the initramfs shell. The dmesg includes a bunch of errors like below: [ 43.263460] localhost multipathd[1344]: sdb: fail to get serial [ 43.268762] localhost multipathd[1344]: mpatha: failed in domap for addition of new path sdb [ 43.268762] localhost multipathd[1344]: uevent trigger error [ 43.282065] localhost kernel: device-mapper: table: table load rejected: not all devices are blk-mq request-stackable [ 43.282096] localhost kernel: device-mapper: table: unable to determine table type [ 43.275898] localhost multipathd[1344]: sdd: fail to get serial [ 43.282597] localhost multipathd[1344]: mpatha: failed in domap for addition of new path sdd [ 43.282642] localhost multipathd[1344]: uevent trigger error [ 43.286540] localhost multipathd[1344]: sdc: fail to get serial [ 43.296366] localhost kernel: device-mapper: table: table load rejected: not all devices are blk-mq request-stackable [ 43.296392] localhost kernel: device-mapper: table: unable to determine table type [ 43.292218] localhost multipathd[1344]: mpathb: failed in domap for addition of new path sdc [ 43.292218] localhost multipathd[1344]: uevent trigger error [ 43.306193] localhost kernel: device-mapper: table: table load rejected: not all devices are blk-mq request-stackable [ 43.306212] localhost kernel: device-mapper: table: unable to determine table type [ 150.523303] localhost dracut-initqueue[1325]: Warning: dracut-initqueue timeout - starting timeout scripts There's more info here if you want it: https://github.com/linuxppc/linux/issues/203 Any ideas what's going wrong here? cheers