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=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 8BF00C55178 for ; Wed, 21 Oct 2020 14:24:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CC39022453 for ; Wed, 21 Oct 2020 14:24:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC39022453 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D2F836B005C; Wed, 21 Oct 2020 10:24:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CDFA46B005D; Wed, 21 Oct 2020 10:24:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BD05C6B0068; Wed, 21 Oct 2020 10:24:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0150.hostedemail.com [216.40.44.150]) by kanga.kvack.org (Postfix) with ESMTP id 912066B005C for ; Wed, 21 Oct 2020 10:24:20 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 1E207180AD806 for ; Wed, 21 Oct 2020 14:24:20 +0000 (UTC) X-FDA: 77396152680.17.pull42_13079e127249 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin17.hostedemail.com (Postfix) with ESMTP id F2F27180D0180 for ; Wed, 21 Oct 2020 14:24:19 +0000 (UTC) X-HE-Tag: pull42_13079e127249 X-Filterd-Recvd-Size: 3539 Received: from mail-pf1-f196.google.com (mail-pf1-f196.google.com [209.85.210.196]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Wed, 21 Oct 2020 14:24:19 +0000 (UTC) Received: by mail-pf1-f196.google.com with SMTP id j18so1593682pfa.0 for ; Wed, 21 Oct 2020 07:24:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Kd24n8fvExqkMZoTQn7ZLbjiXdKLPg+Z9WhqJAOkLno=; b=BVcdQ/NhSgD3NvUlbnyJP0SEsQT6RkCcYje6nfEhlMV6GlGZh9GB4FYrNj5o2MDedU Uh7x6ZzqrdvdgJize4c42t6dltvaI3iBEnJ/OO4PBtVwyFFNr8yq/cEpZL6QvyOC7TDJ l5JDn1BSfaq6Y+lKdUkEV2UcsPggsHScxH7txHdsiAuhIVqdjJjsDUe9DIDZVd9SBviC QYw28c7Rsh9o0/c97jJ6K9wLaK2gVXvFAAsuFLdYF7xKr4t5hKoOqbMgwlTJ07tvQH66 ZLS72G+WdgmTUrJFimrkXJDQmJ7C4kfz/Utp59cpppffMFO2L/i5nhoQpTS4D8Al2/a5 kAxw== X-Gm-Message-State: AOAM531PuwMlge87u4S0H1lUVNST4dHf6iSYBGsdxjWXZ74S1yeGgSsS 06sRAg/I0ZcnCHJDgzfgv8iQbiq92LwPouM+CXw= X-Google-Smtp-Source: ABdhPJzzUagLy2/wTR2reR/iEjOUzGDitwgsUDsCMI6OUJ3VjWJ4T7EinTswEywdjKJZfSeH/cpZeoxXijk2LTN0EIQ= X-Received: by 2002:a63:a546:: with SMTP id r6mr3613847pgu.160.1603290258598; Wed, 21 Oct 2020 07:24:18 -0700 (PDT) MIME-Version: 1.0 References: <20201012162736.65241-1-nmeeramohide@micron.com> <20201015080254.GA31136@infradead.org> In-Reply-To: From: Mike Snitzer Date: Wed, 21 Oct 2020 10:24:05 -0400 Message-ID: Subject: Re: [EXT] Re: [PATCH v2 00/22] add Object Storage Media Pool (mpool) To: Dan Williams Cc: "Nabeel Meeramohideen Mohamed (nmeeramohide)" , Christoph Hellwig , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "linux-mm@kvack.org" , "linux-nvdimm@lists.01.org" , "Steve Moyer (smoyer)" , "Greg Becker (gbecker)" , "Pierre Labat (plabat)" , "John Groves (jgroves)" , device-mapper development Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hey Dan, On Fri, Oct 16, 2020 at 6:38 PM Dan Williams wrote: > > On Fri, Oct 16, 2020 at 2:59 PM Nabeel Meeramohideen Mohamed > (nmeeramohide) wrote: > > > (5) Representing an mpool as a /dev/mpool/ device file provides a > > convenient mechanism for controlling access to and managing the multiple storage > > volumes, and in the future pmem devices, that may comprise an logical mpool. > > Christoph and I have talked about replacing the pmem driver's > dependence on device-mapper for pooling. Was this discussion done publicly or private? If public please share a pointer to the thread. I'd really like to understand the problem statement that is leading to pursuing a pmem native alternative to existing DM. Thanks, Mike