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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3C7FAD6A223 for ; Fri, 15 Nov 2024 01:41:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=CFguy11ofgtz76+hnSLpkdihHTIQ1t1jz5EBy2vamCg=; b=l7983T/anNdijtjzfmQh7oUIoe PYqOei7ADEPMRUFUtLdaCUV9m8K4z/myc1CkGBQMp7kW227DspCVZx3/CCuTTHK19thl0GsXVaolO x3oGe2o/erv5Dm9aCQiCvO7EdBNhzM1EViXEMiQPOtOs7y6iRagNddTBJdI3mSrMMMAMDfhLRy2hk h8sNYXIBlmiFYwmEdGkvATm3o+dTY2B+pca0MSs8ZLmFkmRU2hqAZ8O91pnqia+SH8E4ZS1Umr04d 45L+ZXccChdbTQEDwFTn6e4Rwv4Dneo/0WuXohpqBEosH2yQH4DOi4rplroHAl68E4zgEsN3RXOC3 8xCOeeOQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tBlKW-00000001KFx-1Dbr; Fri, 15 Nov 2024 01:41:00 +0000 Received: from out30-124.freemail.mail.aliyun.com ([115.124.30.124]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tBlKT-00000001KFT-1VGS for linux-nvme@lists.infradead.org; Fri, 15 Nov 2024 01:40:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1731634853; h=Message-ID:Date:MIME-Version:Subject:To:From:Content-Type; bh=CFguy11ofgtz76+hnSLpkdihHTIQ1t1jz5EBy2vamCg=; b=hI4ArgypskfSGyEzZe5B9BdHQmIgR1kFam29fwUPBn44waZN0UKrbD20UtiR4+rGu0grsnSjgL3iRwjob9KTgjEc4ceM6HWUyczeBj6bNlBZZu57auhLmfQ4WdzvzkrzB00KSVHZTo0TwXCEjTlznLeenAAWQjFCw9JzIXJC6Ww= Received: from 30.178.81.254(mailfrom:kanie@linux.alibaba.com fp:SMTPD_---0WJQesu2_1731634849 cluster:ay36) by smtp.aliyun-inc.com; Fri, 15 Nov 2024 09:40:50 +0800 Message-ID: <72a94818-cbca-4c0d-a37d-59fba15e4dbc@linux.alibaba.com> Date: Fri, 15 Nov 2024 09:40:47 +0800 MIME-Version: 1.0 User-Agent: =?UTF-8?B?TW96aWxsYSBUaHVuZGVyYmlyZCDmtYvor5XniYg=?= Subject: Re: CONFIG_NVME_MULTIPATH - Do we need this? To: John Meneghini , "linux-nvme@lists.infradead.org" Cc: Ewan Milne , Bryan Gurney , Chris Leech , Maurizio Lombardi References: <889e1d2a-1cda-4979-8279-f2f665350376@redhat.com> From: Guixin Liu In-Reply-To: <889e1d2a-1cda-4979-8279-f2f665350376@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241114_174057_878510_C2FE6CED X-CRM114-Status: GOOD ( 11.00 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org 在 2024/11/13 08:23, John Meneghini 写道: > Now that RHEL-10 beta has shipped we no longer support anything but > native nvme multi-pathing and I'd like to do something about the > multipath module parameter: > > bool multipath = true; > module_param(multipath, bool, 0444); > MODULE_PARM_DESC(multipath, >         "turn on native support for multiple controllers per subsystem"); > > I'd like to remove this parameter from nvme_core/multipath.c. The fact > is, setting nvme_core.multipath=N never worked in anything but RHEL > and keeping it around only causes confusion. > > For that matter, I'd like to remove the CONFIG_NVME_MULTIPATH kconfig > option altogether. > > Does anybody actually use this? > > # CONFIG_NVME_MULTIPATH is not set > > Do we actually support running nvme without multipath.c ? > If the user want use dm-multipath instead of nvme-multipath, but the kernel's CONFIG_NVME_MULTIPATH is y, they can set this parameter to disable nvme-multipath. Best Regards, Guixin Liu