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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 3EB32C3A5A2 for ; Sun, 22 Sep 2019 19:23:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16DCF206C2 for ; Sun, 22 Sep 2019 19:23:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569180205; bh=1OLP2EegMSYkpDiNpalB0iVNYY2yBm/hTb7jhkms/qs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=k+cQQS5Lg5IlwMJMuUEd9gd/+E5OuSoQlfgq5PAba8Gdh5Njjz98M2gxnMR+FKUtA rnGjcJlb+N9zQeUdr2VZxBjWhKLAFbfiIUp4hYPcBu373OGQjZK+cIbM93Z9jyUX57 PXtFIL0e1oN2Vf3ouc8XzMUWnvaBp9mpuSFT2xV8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731274AbfIVTXX (ORCPT ); Sun, 22 Sep 2019 15:23:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:53246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394272AbfIVSxZ (ORCPT ); Sun, 22 Sep 2019 14:53:25 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5E3B421D80; Sun, 22 Sep 2019 18:53:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178405; bh=1OLP2EegMSYkpDiNpalB0iVNYY2yBm/hTb7jhkms/qs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hLK2VMblEGcJaTCBMs+tOWqEUayroBX7P2+OqlTcbS3VmY014Q6oBq4YZHoTMMTFr XMObZRmVcRbYrD4WODH+1gkAR7a/Bp4iFzEhapoNzzfq2Wk4sAH0B3e1NFJOZTch7d 2T5yjnPkXnpg4rzpQT6fB7kW2ugphn2bB0BvYJVM= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yufen Yu , NeilBrown , Song Liu , Sasha Levin , linux-raid@vger.kernel.org Subject: [PATCH AUTOSEL 5.2 147/185] md/raid1: fail run raid1 array when active disk less than one Date: Sun, 22 Sep 2019 14:48:45 -0400 Message-Id: <20190922184924.32534-147-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922184924.32534-1-sashal@kernel.org> References: <20190922184924.32534-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 a26731a9b38e7..f393f0dc042fc 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -3096,6 +3096,13 @@ 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; @@ -3129,8 +3136,12 @@ 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