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=-4.0 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 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 9D268C433E0 for ; Sun, 9 Aug 2020 15:33:07 +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 1E1B52068F for ; Sun, 9 Aug 2020 15:33:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="soPNmMGt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E1B52068F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kioxia.com 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:MIME-Version:In-Reply-To:References:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=bQm2xXRyj+FSWDXi51YchfdXMKKbgMusLIWIGCLbfLE=; b=soPNmMGthCjMrT84kjJttn27h iQ8nXltiXsmg8sljm3cI2wBSPgKgY1fOhvfba7Mf4dDFb6dRG7wvN2iXPxK7Fuf+xWXPpKyDuMcKf Awz6AT79aW+RYM+88+jj7TediBxxeYmTLFs4Vw0yLB+220CKOwSCmK5c6ubXPycQ+SKhVWokSEhxo kt+gss4b/kKonSwV8U/YAJd5EywP+K8aCL5gGHrIWI7NXi8uD9pJXlpq1kyixH4rCpbSUTLtwNb8A jgUJhmNkHpb1T3tH/8UeMkTL723aSodz7P+CxPIlO7j3fYXLZYJfNN7oZbd/RehDkL3zT7OcxWhaV W3MI3L7Nw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4nJj-0005yp-94; Sun, 09 Aug 2020 15:32:59 +0000 Received: from usmailhost21.kioxia.com ([12.0.68.226] helo=SJSMAIL01.us.kioxia.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4nJf-0005yB-5u for linux-nvme@lists.infradead.org; Sun, 09 Aug 2020 15:32:57 +0000 Received: from SJSMAIL01.us.kioxia.com (10.90.133.90) by SJSMAIL01.us.kioxia.com (10.90.133.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Sun, 9 Aug 2020 08:32:45 -0700 Received: from SJSMAIL01.us.kioxia.com ([::1]) by SJSMAIL01.us.kioxia.com ([fe80::2c17:bc91:18b9:c598%3]) with mapi id 15.01.1779.004; Sun, 9 Aug 2020 08:32:45 -0700 From: Victor Gladkov To: Sagi Grimberg , Hannes Reinecke Subject: RE: [PATCH v7] nvme-fabrics: reject I/O to offline device Thread-Topic: [PATCH v7] nvme-fabrics: reject I/O to offline device Thread-Index: AdZVNtfQwLqufTQARFyP/r4WNKASYABPsl96AOTmf4ABqzo0AANp/vvg Date: Sun, 9 Aug 2020 15:32:45 +0000 Message-ID: <45d34d7927354b6393859048c257cb86@kioxia.com> References: <168ed5d66eae49ac8b445478b1bb362d@kioxia.com> <20200714110435.GF16178@lst.de> <52eec097-606d-1e2c-edc3-81b60807ad5c@grimberg.me> In-Reply-To: <52eec097-606d-1e2c-edc3-81b60807ad5c@grimberg.me> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.93.66.127] MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200809_113255_369503_D0E7BD99 X-CRM114-Status: GOOD ( 11.68 ) 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 , James Smart , "linux-nvme@lists.infradead.org" , "Ewan D. Milne" 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 7/8/2020 8:07 AM, Victor Gladkov wrote: > Commands get stuck while Host NVMe controller (TCP or RDMA) is in > reconnect state. NVMe controller enters into reconnect state when it > loses connection with the target. It tries to reconnect every 10 > seconds (default) until successful reconnection or until reconnect > time-out is reached. The default reconnect time out is 10 minutes. > > To fix this long delay due to the default timeout we introduce new > session parameter "fast_io_fail_tmo". The timeout is measured in > seconds from the controller reconnect, any command beyond that > timeout is rejected. The new parameter value may be passed during > 'connect'. > The default value of 0 means no timeout (similar to current behavior). I'd like to remind you that this improvement is pending for commit. Pay attention, please. Regards, Victor. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme