From nobody Thu Apr 2 14:06:33 2026 Received: from sg-1-33.ptr.blmpb.com (sg-1-33.ptr.blmpb.com [118.26.132.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4F4F61917ED for ; Tue, 10 Feb 2026 08:11:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=118.26.132.33 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770711067; cv=none; b=sA4x4TDzW+KGHxrxJbvaNwxQz3EXrMBFt2fdXGvOxGExbty/ayLr8H8QnZZVkjytsflaCxsJDM5ior8re95Vdq/j+e2vjat44v/KurQszo+8HhS/C6lIvJGYGU6ZfYjfWdlXlhiLXQBp3CGj0j7g/h5W6YSzvODFrgjx7GtmAzU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770711067; c=relaxed/simple; bh=dr0LQccwdKM/7mrxOC5C1gfn3uIL7ftunj9E0d1x4Mg=; h=Cc:Mime-Version:To:Message-Id:Content-Type:From:Subject:Date; b=CDQp7v5IA7IgdR6frCX0GlP1MlN4o2DGNq6X9w9tsAH7vVX8l1uMH2I1pqJCAPf4X7HcQcEl8LZ06lxI757XIkUC9TczRW9Ute81QLkEz7UtO3TRtO7sPGz23NlPL7a6irpQ5pLiDn5ufKCKQw6AVXfebQAsvbPWIPVz9HFZrKc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fnnas.com; spf=pass smtp.mailfrom=fnnas.com; dkim=pass (2048-bit key) header.d=fnnas-com.20200927.dkim.feishu.cn header.i=@fnnas-com.20200927.dkim.feishu.cn header.b=M9IQWOoG; arc=none smtp.client-ip=118.26.132.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fnnas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fnnas.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fnnas-com.20200927.dkim.feishu.cn header.i=@fnnas-com.20200927.dkim.feishu.cn header.b="M9IQWOoG" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=s1; d=fnnas-com.20200927.dkim.feishu.cn; t=1770711052; h=from:subject:mime-version:from:date:message-id:subject:to:cc: reply-to:content-type:mime-version:in-reply-to:message-id; bh=aAqFJFdoBxBUxcrSfmKz3m91I+RbuK5iyyFRMk60CJM=; b=M9IQWOoGZArJ22HTsvOzvqU5DXf1z3E+8BVdBZpdipigseAxRrIDjkPm4sjj5N9veSG8Rd sB8s/TBXNNhtBnjC0hA4h0OnT3Zl5G5u2QDPsVieXQmK4X4v6UFRJXGSdiyCEJ+3WRYJPV lmG0RPwOQSP5csWvtyhPnV2+9GaCON3luadfMr8je7K7qLrNDpuzWCpoms5QbfS+Fx9k22 YBVggAdyPOTN10iD1GqbHjC37CD6Y/Qiv4D0HXmyCe9I9tt4PrlsTTZpvBDikEoDBUzpDf qeoSfzRPSx3gBGlUJf+bbWe8HdV7O1RQKmoy9N1uhNUBDlbV/uh7XNlrDGpAhQ== Cc: , , , "Chen Cheng" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 To: Message-Id: <20260210133847.269986-1-chencheng@fnnas.com> X-Mailer: git-send-email 2.51.0 X-Lms-Return-Path: X-Original-From: Chen Cheng From: "Chen Cheng" Subject: [PATCH] md: suppress spurious superblock update error message for dm-raid Date: Tue, 10 Feb 2026 21:38:47 +0800 Received: from c ([113.111.140.189]) by smtp.feishu.cn with ESMTPS; Tue, 10 Feb 2026 16:10:50 +0800 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" dm-raid has external metadata management (mddev->external =3D 1) and no persistent superblock (mddev->persistent =3D 0). For these arrays, there's no superblock to update, so the error message is spurious. The error appears as: [ 123.456789] md_update_sb: can't update sb for read-only array md0 Link: https://lore.kernel.org/all/20260128082430.96788-1-tj.iam.tj@proton.m= e/ Fixes: 6a5cb53aaa1d ("md: don't ignore read-only array in md_update_sb()") Signed-off-by: Chen Cheng Reviewed-by: Paul Menzel --- drivers/md/md.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 6d73f6e196a..e30b658641e 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2790,7 +2790,9 @@ void md_update_sb(struct mddev *mddev, int force_chan= ge) if (!md_is_rdwr(mddev)) { if (force_change) set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags); - pr_err("%s: can't update sb for read-only array %s\n", __func__, mdname(= mddev)); + if (!mddev_is_dm(mddev)) + pr_err_ratelimited("%s: can't update sb for read-only array %s\n", + __func__, mdname(mddev)); return; } =20 --=20 2.51.0