From mboxrd@z Thu Jan 1 00:00:00 1970 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 F17FB8BEA; Fri, 8 Nov 2024 01:03:30 +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=1731027814; cv=none; b=qxpN2gALu4v+u9NNIZA4O0lTxEXs0IHmLoraGN00i3NupJcWRZMECtdIiwHpKke3HDIvs4k1KTnXrkWR7fOf7pvX9dR3mi4r8w0M//3Yuk7YfEcoyRkpmUxGKybbPSlRf/Zx/IPjnOj+SDgYbEUfywqtajBEod/bTw7UdyXROO8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731027814; c=relaxed/simple; bh=C8s5Zk0CHKy/1CLCU2x8zls0uB773wC98JA5fh843s0=; h=Subject:To:Cc:References:From:Message-ID:Date:MIME-Version: In-Reply-To:Content-Type; b=TVagQWVkLrFTf9uYDkhyXKDc7hupku7VipGjFHXAqaTxtFUCAElAiQvKiklC1yntS4aSegJoP1YMxAUtUaHTb4KEt3OZjXUsHSZXFdGbul0yD7LxMwUYCoxRlw7mTzGXZ4sftKmnm7o1eN4X+ssA6uvKR0lp+IdrPskyN0QrIp4= 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 ESMTP id 4Xl0zx2BJ5z4f3jJ1; Fri, 8 Nov 2024 09:03:09 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 58BC91A0359; Fri, 8 Nov 2024 09:03:27 +0800 (CST) Received: from [10.174.176.73] (unknown [10.174.176.73]) by APP4 (Coremail) with SMTP id gCh0CgBHI4ddYy1nni+jBA--.29522S3; Fri, 08 Nov 2024 09:03:27 +0800 (CST) Subject: Re: [PATCH md-6.13] md: remove bitmap file support To: Song Liu , Yu Kuai Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, yi.zhang@huawei.com, yangerkun@huawei.com, "yukuai (C)" References: <20241107125911.311347-1-yukuai1@huaweicloud.com> From: Yu Kuai Message-ID: Date: Fri, 8 Nov 2024 09:03:25 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID:gCh0CgBHI4ddYy1nni+jBA--.29522S3 X-Coremail-Antispam: 1UD129KBjvdXoWrtF15GryrGF1xur13tr1xuFg_yoWxtrgE9w 1vkr1xW3y7Jr9akFsxXrn0vrsrCw15JFWq9ayDJFyvqw18Xa4rtF40k392qr13JFZFvr93 ury0qr48JFW3XjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbVxFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcVAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCYjI0SjxkI62AI1cAE67vI Y487MxkF7I0En4kS14v26r126r1DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r 1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CE b7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0x vE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAI cVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8JbIYCTnIWIevJa 73UjIFyTuYvjfUYCJmUUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Hi, 在 2024/11/08 7:41, Song Liu 写道: > On Thu, Nov 7, 2024 at 5:02 AM Yu Kuai wrote: >> >> From: Yu Kuai >> >> The bitmap file has been marked as deprecated for more than a year now, >> let's remove it, and we don't need to care about this case in the new >> bitmap. >> >> Signed-off-by: Yu Kuai > > What happens when an old array with bitmap file boots into a kernel > without bitmap file support? If mdadm is used with bitmap file support, then kenel will just ignore the bitmap, the same as none bitmap. Perhaps it's better to leave a error message? And if mdadm is updated, reassemble will fail. Thanks, Kuai > > Thanks, > Song > . >