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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 47F52C0044C for ; Wed, 31 Oct 2018 17:47:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0154220657 for ; Wed, 31 Oct 2018 17:47:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0154220657 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=electrozaur.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729949AbeKACq4 (ORCPT ); Wed, 31 Oct 2018 22:46:56 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:53132 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729745AbeKACq4 (ORCPT ); Wed, 31 Oct 2018 22:46:56 -0400 Received: by mail-wm1-f65.google.com with SMTP id 189-v6so16010479wmw.2; Wed, 31 Oct 2018 10:47:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=BhDGAK0BcgCBiOTQRWaZcJpY9AuY8QHgMr5CyJ+vI50=; b=Xd4gK1Z4/+QcXmEZ7s1w6pGQEJ0mtj4392a3Cxt/KAfjteC6ynp+PgK780EvtBBFWH WgeI8tSixoohNN6u4ilERnrbqx1/wvZwbYPkwDi16va5BRYdOxt+eAhL+2R/LsQr4syD r1O1/r53LHm6gtPoX8MSrO6Homg0ErmrB3JZ61vPx54Woias4JJffoHz9lFwSC+EP1QD LkoT6I1KEmDg9W5DXZiHXLyBXEM8p5WFKZKMOet+NqyTDvQ5iHBayoH5wulrGMjRnzCi EUKAEIVSPqZKpeCAFSq30aSZxSKxX836Nv3bwsT1hrHiaidUa9XJFu0hWlLDeyNYp4sZ vleg== X-Gm-Message-State: AGRZ1gIyodRGSnV1q0FbOts51GoKxKeyyN19yWoaHW7LMs/jnNrBpC16 f+pp0AR9GRBOYtZvadesLy0usuJb X-Google-Smtp-Source: AJdET5dFkdn7IWo/RD/Cey+7bFcjpmCsK0UKPUsk/pI9cGXwoIep3FEUYvEp/sOtJ9e0d1Wb5RWnQw== X-Received: by 2002:a1c:e714:: with SMTP id e20-v6mr3004960wmh.83.1541008072985; Wed, 31 Oct 2018 10:47:52 -0700 (PDT) Received: from [10.0.0.5] ([207.232.55.62]) by smtp.gmail.com with ESMTPSA id t82-v6sm20041893wme.30.2018.10.31.10.47.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 31 Oct 2018 10:47:52 -0700 (PDT) Subject: Re: remove exofs and the T10 OSD code V2 To: Bart Van Assche , Christoph Hellwig , martin.petersen@oracle.com References: <20181027082019.20838-1-hch@lst.de> <1541006979.196084.138.camel@acm.org> Cc: Nick Desaulniers , Nathan Chancellor , Linus Torvalds , osd-dev@open-osd.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org From: Boaz Harrosh Message-ID: <6794b3a0-fe57-cd8b-3ad3-3a590121b12a@electrozaur.com> Date: Wed, 31 Oct 2018 19:47:50 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: <1541006979.196084.138.camel@acm.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 31/10/18 19:29, Bart Van Assche wrote: > On Wed, 2018-10-31 at 18:34 +0200, Boaz Harrosh wrote: >> On 27/10/18 11:20, Christoph Hellwig wrote: >>> The only real user of the T10 OSD protocol, the pNFS object layout >>> driver never went to the point of having shipping products, and we >>> removed it 1.5 years ago. Exofs is just a simple example without >>> real life users. >>> >>> The code has been mostly unmaintained for years and is getting in the >>> way of block / SCSI changes, so I think it's finally time to drop it. >>> >>> Quote from Boaz: >>> >>> "As I said then. It is used in Universities for studies and experiments. >>> Every once in a while. I get an email with questions and reports. >>> >>> But yes feel free to remove the all thing!! >> >> I think I'm changing my mind about this. >> [ ... ] > > The osd driver was accepted in the upstream kernel in 2009. I have checked all > commits in Linus' tree for the osd driver that went in since 2009. All changes > made by other kernel developers than you are the result of tree-wide refactoring, > compiler warning fixes, fixes for issues detected by static source code > analyzers or spelling fixes. Hence my question: how big is the user base of the > exofs and osd kernel drivers? > Not big at all. And none of them production setups. As I said mainly used by academia. Thanks Boaz > Thanks, > Bart.