From nobody Fri Dec 19 04:23:14 2025 Received: from www5210.sakura.ne.jp (www5210.sakura.ne.jp [133.167.8.150]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCA893090DE for ; Mon, 27 Oct 2025 15:44:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=133.167.8.150 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761579842; cv=none; b=WrQ+VLYVp8l8X5aqKMiZSlQrOcjkOdmfGcNE4Bs8PptlUO11VssJkEwCZL13Uq6Z3yHNssJGEJFYQ+M+2Va6cDM/+foRA5z0ymjP3eSlDdNlrIdOzuvv069guuzubgUuOx8bBsI1YlFAeoVElIoHb2ffPG1Dd/JT40GxM+rGX+0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761579842; c=relaxed/simple; bh=REdJID8evdRNIV2SALKM9j+CDHk2lNYcuzoh5ecGRG4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=j9c5MVji0hV7KjISrElRabQ9Gr4XHbxPEVFYb+C/EF+GZVOeWXibnBc8nln1WaEHdC3JdrO8hnBfeiuxAjbwNpQtcqHIlq7aqtjq63fUM7nt+iWe7mjenJHJRmobpoDfp3tvv8b4fKu/ij2+aTsC3JkWQhXrQdR3+ZhKZO0KOHA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mgml.me; spf=pass smtp.mailfrom=mgml.me; dkim=pass (2048-bit key) header.d=mgml.me header.i=@mgml.me header.b=jCSr0Rb1; arc=none smtp.client-ip=133.167.8.150 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mgml.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mgml.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mgml.me header.i=@mgml.me header.b="jCSr0Rb1" Received: from fedora (p3796170-ipxg00h01tokaisakaetozai.aichi.ocn.ne.jp [180.53.173.170]) (authenticated bits=0) by www5210.sakura.ne.jp (8.16.1/8.16.1) with ESMTPSA id 59RF4hAo090988 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 28 Oct 2025 00:04:46 +0900 (JST) (envelope-from k@mgml.me) DKIM-Signature: a=rsa-sha256; bh=GEzNtrrxCNuYas2ZIUicNm+BKzW5PcfO8c9yQJ8eNLY=; c=relaxed/relaxed; d=mgml.me; h=From:To:Subject:Date:Message-ID; s=rs20250315; t=1761577486; v=1; b=jCSr0Rb1CXVZvPif/aR5OkLs7kSDgpYTWcF3zmuVdajPwnFnjum3aprU4hVXp/ZA dwbDaXj0wsF8HJ2GZJBMS7DEMb+hgHKId3JpdVuvNm8KkS19KZlGoYRnApozKpbo gNlv9OPm/Ffja1uo84OampodAsMcYGkaPmvYca1N3RGprO/GIt31kcj3OJ3gSSDL aWSbZGpi3smAcV9r7PNYBwTQaUZTit5JajunCYOf00ypK4lEqYairunu9EAcW52e g2okWUEd1E2iHXSku7lehi9K9qLwAp/sXEaKSiVe6cIAziKdkg8Nr6YFR53CP8r8 DnnwwkPdJy5/e/9hERAGWg== From: Kenta Akagi To: Song Liu , Yu Kuai , Shaohua Li , Mariusz Tkaczyk , Guoqing Jiang Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, Kenta Akagi Subject: [PATCH v5 14/16] md/raid10: Add error message when setting MD_BROKEN Date: Tue, 28 Oct 2025 00:04:31 +0900 Message-ID: <20251027150433.18193-15-k@mgml.me> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20251027150433.18193-1-k@mgml.me> References: <20251027150433.18193-1-k@mgml.me> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Once MD_BROKEN is set on an array, no further writes can be performed. The user must be informed that the array cannot continue operation. Add error logging when MD_BROKEN flag is set on raid10 arrays to improve debugging and system administration visibility. Signed-off-by: Kenta Akagi --- drivers/md/raid10.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index aa9d328fe875..369def3413c0 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2031,6 +2031,10 @@ static void raid10_error(struct mddev *mddev, struct= md_rdev *rdev) =20 if (test_bit(In_sync, &rdev->flags) && !enough(conf, rdev->raid_disk)) { set_bit(MD_BROKEN, &mddev->flags); + pr_crit("md/raid10:%s: Disk failure on %pg, this is the last device.\n" + "md/raid10:%s: Cannot continue operation (%d/%d failed).\n", + mdname(mddev), rdev->bdev, + mdname(mddev), mddev->degraded + 1, conf->geo.raid_disks); =20 if (!mddev->fail_last_dev) return; --=20 2.50.1