From nobody Fri Oct 3 21:41:18 2025 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (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 A9D10299943; Mon, 25 Aug 2025 08:07:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756109277; cv=none; b=EhuZu3IZyOoj/B7dWDfHL0enp3zHAoqJuPqWKHVI4z5UUF+EpTeUMvAFApBaxVyFuolPibASa8qTb4NCZN2tUugGC+Wp/VGqH8XqYTRXm6lzD/Kzt3dZziZMDw8s3tWy1PaBnk0JB50vJ0fvNKo577x703VDIQpsQqdsIrfEo/E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756109277; c=relaxed/simple; bh=N+jRalDtiGA+NO7A9NDMPwm+Cjsc99KngkTzxTTvExw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=GwJ43ASjHmnu2delc40ElXYwsmMH9GdTSV2pAz4PIAuKbWBCPbLg4YZqel4hEr0Sv4BD7z8UVFv6n11SVgt7nHhQraDSqgXKxI0qvmES3yy2OiGIt3wjo6rLtdBhQKXJXU0YpzZB4uO77n0Ze3yUQs4JH7aVLTle3XIgYXWsDGY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.93.142]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4c9Nh84BQ6zKHNkr; Mon, 25 Aug 2025 16:07:52 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 303191A127A; Mon, 25 Aug 2025 16:07:52 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAncIzVGaxosLjpAA--.42805S5; Mon, 25 Aug 2025 16:07:51 +0800 (CST) From: linan666@huaweicloud.com To: song@kernel.org, yukuai3@huawei.com Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, martin.petersen@oracle.com, bvanassche@acm.org, hch@infradead.org, filipe.c.maia@gmail.com, linan666@huaweicloud.com, yangerkun@huawei.com, yi.zhang@huawei.com Subject: [PATCH v3 1/2] md: prevent adding disks with larger logical_block_size to active arrays Date: Mon, 25 Aug 2025 15:59:23 +0800 Message-Id: <20250825075924.2696723-2-linan666@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250825075924.2696723-1-linan666@huaweicloud.com> References: <20250825075924.2696723-1-linan666@huaweicloud.com> 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 X-CM-TRANSID: gCh0CgAncIzVGaxosLjpAA--.42805S5 X-Coremail-Antispam: 1UD129KBjvdXoWrKFyDGFyDXFW5tFW8WF45Wrg_yoWkuFXE9a 1Yvr92qr47GF9I9F1UZrWxZFyfKa18Wa1kXFnFgw13ua4UJF1kCF97u345J3yq9ay7AFyY kr1kKw4fAr4UAjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbd8FF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUGwA2048vs2IY02 0Ec7CjxVAFwI0_Gr0_Xr1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM2 8EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2vY z4IE04k24VAvwVAKI4IrM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c 02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE 4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4 IIrI8v6xkF7I0E8cxan2IY04v7M4kE6xkIj40Ew7xC0wCY1x0262kKe7AKxVWUtVW8ZwCF 04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r 18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vI r41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr 1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvE x4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUrhL5UUUUU= X-CM-SenderInfo: polqt0awwwqx5xdzvxpfor3voofrz/ Content-Type: text/plain; charset="utf-8" From: Li Nan When adding a disk to a md array, avoid updating the array's logical_block_size to match the new disk. This prevents accidental partition table loss that renders the array unusable. The later patch will introduce a way to configure the array's logical_block_size. Signed-off-by: Li Nan Reviewed-by: Martin K. Petersen Reviewed-by: Yu Kuai --- drivers/md/md.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index cea8fc96abd3..206434591b97 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -6064,6 +6064,13 @@ int mddev_stack_new_rdev(struct mddev *mddev, struct= md_rdev *rdev) if (mddev_is_dm(mddev)) return 0; =20 + if (queue_logical_block_size(rdev->bdev->bd_disk->queue) > + queue_logical_block_size(mddev->gendisk->queue)) { + pr_err("%s: incompatible logical_block_size, can not add\n", + mdname(mddev)); + return -EINVAL; + } + lim =3D queue_limits_start_update(mddev->gendisk->queue); queue_limits_stack_bdev(&lim, rdev->bdev, rdev->data_offset, mddev->gendisk->disk_name); --=20 2.39.2