Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp5662168ybl; Tue, 27 Aug 2019 08:00:10 -0700 (PDT) X-Google-Smtp-Source: APXvYqxV9pRQKn30DJ1NyL9S68yEhOjqa6SdZzSyy3QsphZiBuFYGVQyOQzQVC3+FIeNNj1fd6D/ X-Received: by 2002:a17:90a:e502:: with SMTP id t2mr25877028pjy.104.1566918010464; Tue, 27 Aug 2019 08:00:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566918010; cv=none; d=google.com; s=arc-20160816; b=t8qsltnm/VPZ3N/1E7rhex8hUsIsj2oHch2KRwsySc0KchpEONWMNhDLW+3aJbtEJA evX6FpoAkqZzkcmU7t4w+dKqcnRv5d3blTs8SQ24UoUR/iLcCaq8IqBnowNSBxhfYPqK MvRXrITvMlHvXuphzu8JwYZ2VYhxnf17NyQ7tlhwWzCzQjwSVVt8az8+9SQVYXonCAQk sk+rwtkMajPUC2VC1fHwfr+8laueChd6PnepDQohw1ORum1X9iyj+al4zUpR5mr304lO UUTuS6885v1lgH2kP8RavwyAFJSUecYOwBgdRp/gO96Jk+zu9vAvmqaMRYbEg3p5SHD3 59Sg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=PTpBRl9YsufN2r7QN04JnV23L+ubV4W2aqxdUYIh0Wc=; b=emRUk7UDdm4dL8BA/MEH57HCswy5aCLTGl7QTVyhq3bmhOghaI5e2VpCQILys52YUj CJcpVeFZSUQ/PMqpEQasTaM4/HibtSbbQ5wXHX4XGAc2OKWCU0qDo5xvQWIww6AOiwjC 4np54gpZR+69m56kYH9c2M+uoeQgCg51uu+YC/GNFUu6bd6y7rdkcd+svuQlbai3lq5L AaW4emy+PPhcQPeRxasCMY/excwx0FAQWhIiRmiPsXk3ZDsL3JiUuIcIp4LwUB9ZOblj v1mP+Zdc5lrfxwr6BBClyBcWM7OKeGA1rIMMbvhL0g5D4RLvEjU4QQG8wCKplvCfoPB4 802Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-nfs-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u6si13789221pfm.135.2019.08.27.07.59.56; Tue, 27 Aug 2019 08:00:10 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-nfs-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-nfs-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729696AbfH0O6U (ORCPT + 99 others); Tue, 27 Aug 2019 10:58:20 -0400 Received: from fieldses.org ([173.255.197.46]:47772 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729636AbfH0O6T (ORCPT ); Tue, 27 Aug 2019 10:58:19 -0400 Received: by fieldses.org (Postfix, from userid 2815) id 8858F1C89; Tue, 27 Aug 2019 10:58:19 -0400 (EDT) Date: Tue, 27 Aug 2019 10:58:19 -0400 From: "bfields@fieldses.org" To: Trond Myklebust Cc: "chuck.lever@oracle.com" , "jlayton@redhat.com" , "linux-nfs@vger.kernel.org" , "bfields@redhat.com" , "jlayton@poochiereds.net" Subject: Re: [PATCH 0/3] Handling NFSv3 I/O errors in knfsd Message-ID: <20190827145819.GB9804@fieldses.org> References: <20190826165021.81075-1-trond.myklebust@hammerspace.com> <20190826205156.GA27834@fieldses.org> <61F77AD6-BD02-4322-B944-0DC263EB9BD8@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On Tue, Aug 27, 2019 at 02:53:01PM +0000, Trond Myklebust wrote: > The one problem is that the looping forever client can cause other > clients to loop forever on their otherwise successful writes on other > files. Yeah, that's the case I was wondering about. > That's bad, but again, that's due to client behaviour that is > toxic even today. So my worry was that if write errors are rare and the consequences of the single client looping forever are relatively mild, then there might be deployed clients that get away with that behavior. But maybe the behavior's a lot more "toxic" than I imagined, hence unlikely to be very common. --b.