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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 42D8EC1B0D8 for ; Tue, 8 Dec 2020 14:16:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C2E123B23 for ; Tue, 8 Dec 2020 14:16:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729377AbgLHOQY (ORCPT ); Tue, 8 Dec 2020 09:16:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729358AbgLHOQY (ORCPT ); Tue, 8 Dec 2020 09:16:24 -0500 Received: from mail-io1-xd2a.google.com (mail-io1-xd2a.google.com [IPv6:2607:f8b0:4864:20::d2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6553C06179C for ; Tue, 8 Dec 2020 06:15:43 -0800 (PST) Received: by mail-io1-xd2a.google.com with SMTP id y5so17027170iow.5 for ; Tue, 08 Dec 2020 06:15:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=aFEq0S7a57DGwr5Vv73yvEZmzOjbCOIiqXWdjglEIDM=; b=hguXzE2N/SqwhTAkfIFMN5D2kcOoRovIkcFN8Sm8Y8WbZ9PYL6fpRqVJSwl9isgOj9 80nVcKEdADHigrpy+4eIXwjRtMT2knvOgcGVjHDGFRM4aOhVMhSFQIhMQHdGpzVCDpW8 ZKLvxs7+FpyAvSGtYG79QjrKTuK4TWoKDcAtsdWVzaBCKY567YVj9jJAeiBF4Dlfsfwq llXkyBcDEpJFj3Z0FiZ9tyRxmJA+Dbt+yK8p/N2Q26kcXwFnNU42nX41I3NMUctrMGbG 9RhsvwW12O210fb96Njx1T+wXTZbLcj/jMV2OXNP42ByLMQr/PArBXLsl9IYO/HjChH5 jVDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=aFEq0S7a57DGwr5Vv73yvEZmzOjbCOIiqXWdjglEIDM=; b=LuJVMkuLK0AK5JQ/KjQxLVmgCfUm463fWUQFV6eTLuyeVgAAJ9UMBbJLb+EgybKaME 1kW4Hk56FGX1H1/xi5Hnd9KsyKt//rajeLGb/BSaS3lkUZ3fExR5WM6Z4IbyJOOvbWvS 1G5nU84P4JXx9IgKksSQoYHH2FBRAR40HhzfxPxS6uhYnld5J92zJjV11L0RNrSJAJCX pbE38gJKx6ucyyyfkIZhywg8xFKvoMYQye1hzpMYC/c+VLHXLNdcjnKsEwgEMP8LSCBJ u1EEChi+s7Fz2oQQDd9bXr2BfX7oXdgW8RZcd5NoZRkJ0ADI9xB1Fi10SK8yGtEkPRx5 1RpQ== X-Gm-Message-State: AOAM533sZbfnTl2gQD6vA0TJpNBt9E9XtzR0sfeNKNpOn3PyatIC7ONh XM3k9aP5rpw4W4YzYcL/Y6uAGw== X-Google-Smtp-Source: ABdhPJzD7k++Tng4C23t2AsnQOqZkMhInrVVHvjmUGn3gedrlrpTsFJu1dm1X/5LMt9jMiPy6Cba9Q== X-Received: by 2002:a02:b02:: with SMTP id 2mr16161804jad.15.1607436943117; Tue, 08 Dec 2020 06:15:43 -0800 (PST) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id h70sm7716957iof.31.2020.12.08.06.15.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Dec 2020 06:15:42 -0800 (PST) Subject: Re: store a pointer to the block_device in struct bio (again) To: Christoph Hellwig , Qian Cai Cc: Tejun Heo , Coly Li , Song Liu , dm-devel@redhat.com, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-s390@vger.kernel.org, linux-block@vger.kernel.org, Stephen Rothwell , Linux Next Mailing List References: <20201201165424.2030647-1-hch@lst.de> <920899710c9e8dcce16e561c6d832e4e9c03cd73.camel@redhat.com> <20201208110403.GA22179@lst.de> From: Jens Axboe Message-ID: Date: Tue, 8 Dec 2020 07:15:43 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201208110403.GA22179@lst.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org On 12/8/20 4:04 AM, Christoph Hellwig wrote: > Hi Qian, > > can you send me details of your device mapper setup, e.g. which targets > are used, are they used on top of whole device or partitions. Do you > use partitions on top of the dm devices? Are any other stacking devices > involved? Don't think this needs anything fancy at all - I know Pavel got his test box corrupted, and mine did as well. Looks like it pretty much affected everyone that got unlucky enough to try it, not great... Mine is just ext4 root on nvme. -- Jens Axboe