Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp5662839ybl; Tue, 27 Aug 2019 08:00:39 -0700 (PDT) X-Google-Smtp-Source: APXvYqz4VJDxiVCAyXIaMAuvaxHx01AHRnSN3j/tu43QiOMoJXrZy8qB8XMf3RLC8Nl3mRTFI2RU X-Received: by 2002:a63:ee08:: with SMTP id e8mr22000562pgi.70.1566918039515; Tue, 27 Aug 2019 08:00:39 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566918039; cv=none; d=google.com; s=arc-20160816; b=sEcmtU05QxJo7wpM7YkA1KzxZKMrP+5H8kLfUE+K8nOFMkiW9xTawzUkw3/Oevbl66 zEsLlpkz52O5RIGnNj+n0y/VIY8Sw3Qa5XFvZZrpxvabqaeYX4h7G3UyVnSFwNRgOw0V CjDjULmPSlPsitC1akca+jlEnuJTi62e3BmxOR2O4Zqm7nbYIBJN5xhhwA0WVgzCwetP /kADdcyO0ltiUtJd5Y+aLi+cN5GUbBVQC78TTQww/Z1cGJgwOyF3r9G99LvDl16OciyF tvLZQrRSYBN4XbDam0NxaAp3AjUeTzy+iT5nhlSkOqVI0WNWvyqhcOh7oOlrDt1igFjd gMGg== 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=KOcfVGhlGPrB2QSURSepzLzT98YYm4HSUSS61lbSldI=; b=EaQIDL3tM+fkxHXIYsmC01e2uKzjpFNjxWxBfv5FWQTE/C3CmBGqwlfuATKX1kQsAo ekqRn6xqhG5KWUl9o3ht8B0idDh/PRTgEdx/qcePgn36z+bDREkVvK7+FUpfhTal8x5m +6sYdyF173LALc81XIFNoCC2UIgl26nzAIjD4cG4OHQbpZVxowDp4oIuSXjYImi94WMH iQbjhv8ddtmcwUH1AIkgRlWwOw/8zzaVNPUIHd1OrkHQbVp42HmEC7tLzr14XoRWZidP P4M+zBjbIbwZ6IX10xJiSenqfOLYVo33cQHraxRN9pl1m4kg7gGrrQ8WNkgGrKT5m51f 0jnw== 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 b3si13662176pfo.1.2019.08.27.08.00.25; Tue, 27 Aug 2019 08:00:39 -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 S1726527AbfH0O7N (ORCPT + 99 others); Tue, 27 Aug 2019 10:59:13 -0400 Received: from fieldses.org ([173.255.197.46]:47784 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725811AbfH0O7N (ORCPT ); Tue, 27 Aug 2019 10:59:13 -0400 Received: by fieldses.org (Postfix, from userid 2815) id BCA4E1CB3; Tue, 27 Aug 2019 10:59:12 -0400 (EDT) Date: Tue, 27 Aug 2019 10:59:12 -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: <20190827145912.GC9804@fieldses.org> References: <20190826165021.81075-1-trond.myklebust@hammerspace.com> <20190826205156.GA27834@fieldses.org> <61F77AD6-BD02-4322-B944-0DC263EB9BD8@oracle.com> <20190827145819.GB9804@fieldses.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190827145819.GB9804@fieldses.org> 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 10:58:19AM -0400, bfields@fieldses.org wrote: > 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. (And, to be clear, I like the idea, just making sure I'm not overlooking any problems....) --b.