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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 14D3EC10F14 for ; Thu, 3 Oct 2019 17:37:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E391920865 for ; Thu, 3 Oct 2019 17:37:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570124224; bh=JCa/BC/0Z0jvGevwM8437KXjIIr8XTy5Qbm6AGkSZS8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ekvaOSXEzawc+uGsrJaazhakD0XjzU8LaBNu1cAadXgM95qlvh6dpquVgIrMPZ+ay 9KQnFGqSldo2/KPpPUPvQEb4IcssfOiI+efhzCcNtIcapb+n+19PT2hdIazInaMYpl NY8Q60gSfh1fjkefg8jzCrFR7S9OLd8qTbv4MDFc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732313AbfJCQD5 (ORCPT ); Thu, 3 Oct 2019 12:03:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:49570 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730173AbfJCQD5 (ORCPT ); Thu, 3 Oct 2019 12:03:57 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C992D215EA; Thu, 3 Oct 2019 16:03:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118636; bh=JCa/BC/0Z0jvGevwM8437KXjIIr8XTy5Qbm6AGkSZS8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bg/EGgPL2+XxAf98zWPMN5XQlAy2/iE/F4eDJjhvzBh1Gafe2O/r6zIDxG776B6Wn hchqeEXqIf41M+P1+CP4LeEgizwQy8UFLZesfxQ9CX1Jp6yuG92AdqIlVsFN8NsRbO 0VoE4uigFlni+9pnzOr0K7CdnVm/ZM8FrhftdaWU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, NeilBrown , Yufen Yu , Song Liu , Sasha Levin Subject: [PATCH 4.9 084/129] md/raid1: fail run raid1 array when active disk less than one Date: Thu, 3 Oct 2019 17:53:27 +0200 Message-Id: <20191003154356.849655930@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154318.081116689@linuxfoundation.org> References: <20191003154318.081116689@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yufen Yu [ Upstream commit 07f1a6850c5d5a65c917c3165692b5179ac4cb6b ] When run test case: mdadm -CR /dev/md1 -l 1 -n 4 /dev/sd[a-d] --assume-clean --bitmap=internal mdadm -S /dev/md1 mdadm -A /dev/md1 /dev/sd[b-c] --run --force mdadm --zero /dev/sda mdadm /dev/md1 -a /dev/sda echo offline > /sys/block/sdc/device/state echo offline > /sys/block/sdb/device/state sleep 5 mdadm -S /dev/md1 echo running > /sys/block/sdb/device/state echo running > /sys/block/sdc/device/state mdadm -A /dev/md1 /dev/sd[a-c] --run --force mdadm run fail with kernel message as follow: [ 172.986064] md: kicking non-fresh sdb from array! [ 173.004210] md: kicking non-fresh sdc from array! [ 173.022383] md/raid1:md1: active with 0 out of 4 mirrors [ 173.022406] md1: failed to create bitmap (-5) In fact, when active disk in raid1 array less than one, we need to return fail in raid1_run(). Reviewed-by: NeilBrown Signed-off-by: Yufen Yu Signed-off-by: Song Liu Signed-off-by: Sasha Levin --- drivers/md/raid1.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 53048bf0b2b81..9892c41de4419 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2960,6 +2960,13 @@ static int raid1_run(struct mddev *mddev) !test_bit(In_sync, &conf->mirrors[i].rdev->flags) || test_bit(Faulty, &conf->mirrors[i].rdev->flags)) mddev->degraded++; + /* + * RAID1 needs at least one disk in active + */ + if (conf->raid_disks - mddev->degraded < 1) { + ret = -EINVAL; + goto abort; + } if (conf->raid_disks - mddev->degraded == 1) mddev->recovery_cp = MaxSector; @@ -2994,8 +3001,12 @@ static int raid1_run(struct mddev *mddev) ret = md_integrity_register(mddev); if (ret) { md_unregister_thread(&mddev->thread); - raid1_free(mddev, conf); + goto abort; } + return 0; + +abort: + raid1_free(mddev, conf); return ret; } -- 2.20.1