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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 908BCC28CBC for ; Wed, 6 May 2020 06:30:27 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 44C9A206E6 for ; Wed, 6 May 2020 06:30:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KtIsZ8Kk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 44C9A206E6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=h+Uj/PzA5oSJwOWfiSHn5eZmTjFRONfwmym0r0nhA2k=; b=KtIsZ8KkPhQn10 0TfaPW6ozpOFhXrFdUmQsZMpfR42oK4+ZvCOn+yDDcNTwaXYQgWDqBAIGJD1QKUyoX75gbFj5mXIE KugYr/Ljg8mth3qUue4yGwgPQiUTv3nr+r06eq7PijUp8TPgGD6Ebv+kthaZP2+VZwFyLVuWFK5qn RYYUz2tvTTx2GWpjkheOVLafkv2oWVdL9pgZmf48Es9k+36bwCkb0ywIzFgP1OXhz45Od1ak2iVzw MoWujvzTV0n6mlFPOKoZD30gGaX685SwZxoYrC4V0LIbo7+KODbMcxDORYtE8RUaDZlpj90TrPkBz COEer3me4600VPWrlk/w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWDZY-0004TK-UY; Wed, 06 May 2020 06:30:24 +0000 Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWDZX-0004Sq-TI; Wed, 06 May 2020 06:30:23 +0000 Date: Tue, 5 May 2020 23:30:23 -0700 From: Christoph Hellwig To: Dongli Zhang Subject: Re: How to setup nvme-loop with multipath Message-ID: <20200506063023.GA6928@infradead.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-nvme@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Sun, May 03, 2020 at 01:14:25PM -0700, Dongli Zhang wrote: > Hi nvme developers, > > Would you please help confirm if it is feasible to support multi-path (indeed > shared namespace as id->cmic is always set for nvme-over-fabric) for nvme-loop > so that we would be able to have much more complex topology configuration for > nvme multi-path. > > Below is my sample json file. While both disk1.img and disk2.img are belong to > 'testnqn', disk3.img is belong to 'testnqn2'. > > Is there any way to have disk2.img as shared namespace used by both 'testnqn' > and 'testnqn2'? All the namespace are shared by default. Just run your connect command line again and you get another path (just use a different traddr to make sure duplicates aren't sorted out) This is my simple test connect script: --- et -e set +x HOSTNQN=nqn.2014-08.org.nvmexpress:NVMf:uuid:77dca664-0d3e-4f67-b8b2-04c70e3f991f NQN=nqn.2014-08.org.nvmexpress:NVMf:uuid:77dca664-0d3e-4f67-b8b2-04c70e3f991d echo "transport=loop,hostnqn=$HOSTNQN,nqn=$NQN" > /dev/nvme-fabrics echo "transport=loop,hostnqn=$HOSTNQN,nqn=$NQN,traddr=192.168.7.68" > /dev/nvme- fabrics _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme