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=-5.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 1EFE2C433E4 for ; Mon, 17 Aug 2020 08:15:41 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 E0D2720738 for ; Mon, 17 Aug 2020 08:15:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Fne08BO2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E0D2720738 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de 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=merlin.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=6Tplbmg5v/D8LmGpgKb94e4ar7TpzCWrnTaKF6nDFhk=; b=Fne08BO2hRUnziaIUpvCGhJwq PrtKtiRdF0nKyjNu/XBQe6KrK9z6b7zTLmGq1xCi2yxTsKqnBToph2E19VQ0fi9eI/+dCOubk8ORD psy6sTA7SdfUXdcEG6vai2eGJn+7+ZxF4Q/hqtFmf/JehsM+8hE9OYaVz7d4Qp1s95pq7efnrlv2y AEqgmyodvuOf1nnFu36MHEwUrHTZODZ+8dSAhenHgwdWh+A9DZbNNTtoAKuY88PIlbfboyAOL1OpM Fv0BeyYJ2TBVPx8Yh6Yuxzbjes/F4BGoi7BKRq+CO/v8+VVQG/yvC4WZjV3BcaD//AmdEiFVLAtk+ zRip6Ig7A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k7aIq-0005mm-3v; Mon, 17 Aug 2020 08:15:36 +0000 Received: from verein.lst.de ([213.95.11.211]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k7aHF-0004ra-L5 for linux-nvme@lists.infradead.org; Mon, 17 Aug 2020 08:13:58 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id F324768CF0; Mon, 17 Aug 2020 10:13:52 +0200 (CEST) Date: Mon, 17 Aug 2020 10:13:51 +0200 From: Christoph Hellwig To: Chao Leng Subject: Re: [PATCH 3/3] nvme: redirect commands on dying queue Message-ID: <20200817081351.GA16571@lst.de> References: <20200814151528.277465-1-hch@lst.de> <20200814151528.277465-4-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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-20200817_041357_845735_08599ABE X-CRM114-Status: GOOD ( 11.83 ) 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: Keith Busch , Christoph Hellwig , linux-nvme@lists.infradead.org, Sagi Grimberg 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 Mon, Aug 17, 2020 at 01:49:47PM +0800, Chao Leng wrote: > If without any multipath, will not retry. Which is the right thing to do. > This may not be what we expected. > If we can support both NVMe multipathing and third-party multipathing, > it would be great. In addition to DM-MULTIPATH, third-party multipathing > software is provided by storage vendors, such as PowerPath(DELL&EMC), > SecurePath(hp), Ultrapath(huawei), etc. For dm-multipath we only guarantee we don't break old behavior. ANA was never supported without nvme-multipath so this isn't part of it. Out of tree junk is completely unsupported per the kernel wide policy, unrelated to the nvme driver itself. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme