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 62A98C282EC for ; Thu, 6 Mar 2025 15:19:02 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=OKwwbHKyp4Ga/0e4HrTJnXyioSsxsbAB+spkL99CSzM=; b=sabNAO6iyetZGS1v13QHa3GvGL Pc1kVrEDB4zdgBmcqLIUh6w+eiprjoSUgIg8VgifGCPhBRNOkK64YwUx9ALVtPE59iBuIAZHXvL/z OymDOcof5vDJC/76d63N4Q+LoaDcfmIIADcsXZW/KzGPS3+2bi6jw6raReEvfdtt1E4/wqueAPvyH /2GES330x39w9fPBB+yXp4f4BPK0+UVOCo9zNVvRcdUpSWlqYkQHabNHJBe0dFn54L74E3XVr6Z/Q BnXFXoLj0rjK9uZdS7Fa2Mjqu5jf89RVeom0y6bOh99t5M+/8unDisflYyeZ5xU0Q6vPMk1ZZC0mA I2kTLgqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqD00-0000000BITZ-3hYe; Thu, 06 Mar 2025 15:19:00 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tqC3j-0000000BBGn-0a0H for linux-nvme@bombadil.infradead.org; Thu, 06 Mar 2025 14:18:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=OKwwbHKyp4Ga/0e4HrTJnXyioSsxsbAB+spkL99CSzM=; b=aROVYhdThMUK6uCYU+vCkL+A1U QAMLZh9MUo19sX/NpglFrOm7q0qrLoLspl3MYAmk7CtTeIX4hI8hVr6/fT80pFAg2f+a25ircNMXt P5ydF0tFBsYSp9qVufDGog0SAem++9biJ4HJOuQPfjcnqLO787adOvpV4bvKu5ASo84nblGTTueC5 nBQZzbYTHyHDN8euRKTC+HuQgj0QoRjZ9C1sZ9uuxc9++hhZQCKIv08M+30i0RHAl+LOtRb+pt27W Kq3G+gOCrRqY97cgwcrWYM6kgZ9mHLPKjUqIDImsN9gowJ5ryaSKDP9jyXl8q1sqmn++wUEKwV0Pc s97m3nfA==; Received: from verein.lst.de ([213.95.11.211]) by desiato.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tqC3g-000000017CU-0a7Q for linux-nvme@lists.infradead.org; Thu, 06 Mar 2025 14:18:45 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 2B41668AA6; Thu, 6 Mar 2025 15:18:38 +0100 (CET) Date: Thu, 6 Mar 2025 15:18:37 +0100 From: Christoph Hellwig To: Hannes Reinecke Cc: Christoph Hellwig , Keith Busch , Sagi Grimberg , Nilay Shroff , John Meneghini , bmarzins@redhat.com, Bryan Gurney , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Marco Patalano , axboe@kernel.dk Subject: Re: [PATCH] nvme: remove multipath module parameter Message-ID: <20250306141837.GA21353@lst.de> References: <2ff87386-c6db-4f2e-be91-213504d99a78@linux.ibm.com> <0656b66c-dd9c-495d-b1fc-4f09e763fa66@grimberg.me> <91ae613a-7b56-4ca0-b91c-6bc1eee798b8@suse.de> <20250305141554.GA18065@lst.de> <20250305235119.GB896@lst.de> <20250306000348.GA1233@lst.de> <1ffebf60-5672-4cd0-bb5a-934376c16694@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1ffebf60-5672-4cd0-bb5a-934376c16694@suse.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250306_141844_306944_81C03144 X-CRM114-Status: GOOD ( 12.11 ) 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 On Thu, Mar 06, 2025 at 08:12:03AM +0100, Hannes Reinecke wrote: > Single ported. > There is a range of Samsung NVMe where one is a normal, single ported, > NVMe, and one with a nearly identical model number reporting CMIC. > > Causing _quite_ a lot of confusion with the customer (and L3) when > used under MD, as for the first hotplug works, for the second ... not so > much. If the device is indeed entirely single ported and Samsung can confirm the setting is incorret and not easily fixable by a firmware update we can quirk it.