Received: by 2002:a05:6a10:1a4d:0:0:0:0 with SMTP id nk13csp5887574pxb; Mon, 14 Feb 2022 09:51:33 -0800 (PST) X-Google-Smtp-Source: ABdhPJz4Ks5YzSjkRnr96DvpBvl/vqyQRurA7J72/v4VuqF93i6ome9DkWx5XzJFFvHUl8HASANr X-Received: by 2002:a17:902:e5ca:: with SMTP id u10mr753173plf.161.1644861093476; Mon, 14 Feb 2022 09:51:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1644861093; cv=none; d=google.com; s=arc-20160816; b=oL+M82zt0jzbtLhZTdqFQraXJcF96FTA8Iplkgr+UIzMrp70FNSBnw4Vm6agBLFuY0 ksDwsgiixNTktyLNGvBp+ZcJuqWgQWGbl34ht7R2Flu4tgCl9zUqM+MW1ZrE6RP5rXpF 2qMV9JGmuXw5tvIOCLpfWPPEUKKwRlmFOvgXm9u5ZGHm78r/IpAEoG4sSyv9Fo34elz4 7GtRNGp3qXP02hbOjQhaPHt0GE83qRVw9wUipO8VB0bM6f9KWtDZteIr3YYPP4fXSeAb G9IZUyr+0tvX4MGXA/MJcUeH2BWaQBWrmEYHp5iM+7TbRNT1kDJGKDzT0RjdTrrdJM+m 8cVg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=4ZPN7HBnFfUX9sAa9QDRNYhv8RqYLNXjdEzUKVDHdLg=; b=ZRJ0tB+RcXaM0tkEVq21GAZLTAeIHZmKmPVXMrSHW2kf28a2v0S3W3sOuMwa4J8KQf bXHbPo9453DpIl1CJ3bb1l6z0bNxl+M+4KvN85nML5VC66ZU1CDdjZB09p0Hp/EIlnWs X8GN9AdghAwEWUQYt/WZ9LDnDjYbKP/KcKMseE+rXnhbhVBav3jkuQ/DV/U/fl/9y4HZ O5S9dTTf6VK3f7iC+A8t1UGoC3I0c/GHR/PnkM+dKLTvTVUGeLglMrn26WHPXx6kzumQ DSDCG6dZUl5O5Ue0plyELM42uR1bNfh3lw2xiwyrgG6S/qWBrH1DpYtxXiIplsMPuO0D lUnw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=LzGrUQvV; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id q205si331462pgq.11.2022.02.14.09.51.09; Mon, 14 Feb 2022 09:51:33 -0800 (PST) Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=LzGrUQvV; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352642AbiBNLnV (ORCPT + 99 others); Mon, 14 Feb 2022 06:43:21 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:45262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352797AbiBNLnN (ORCPT ); Mon, 14 Feb 2022 06:43:13 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0F0656C92B for ; Mon, 14 Feb 2022 03:34:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1644838495; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=4ZPN7HBnFfUX9sAa9QDRNYhv8RqYLNXjdEzUKVDHdLg=; b=LzGrUQvV+n64VYNdCd98QwKe/4Y7ncbfiIHsE5kgVaNCKTr2cM3z/EGm6IYwR1ux3D5AFD 1ilFwucr69PZRNih34/126ZfU+HinQMt4fm48oiO6oXQKA89Po/tNMopLdWv/gEjsPRDzk ShhIftCUWON8viJLIURKBbWbwZ0HZnI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-277-3LYgPqGXPqCjp9nVddQ_GQ-1; Mon, 14 Feb 2022 06:34:52 -0500 X-MC-Unique: 3LYgPqGXPqCjp9nVddQ_GQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E83A91853028; Mon, 14 Feb 2022 11:34:50 +0000 (UTC) Received: from [172.16.176.1] (ovpn-64-2.rdu2.redhat.com [10.10.64.2]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 614F0108647A; Mon, 14 Feb 2022 11:34:50 +0000 (UTC) From: "Benjamin Coddington" To: NeilBrown Cc: "Trond Myklebust" , steved@redhat.com, linux-nfs@vger.kernel.org Subject: Re: [nfs-utils PATCH] nfs4id: a tool to create and persist nfs4 client uniquifiers Date: Mon, 14 Feb 2022 06:34:49 -0500 Message-ID: <2B965E03-552B-4A5A-85E7-53E65729198D@redhat.com> In-Reply-To: <164479465866.27779.3680126986096452561@noble.neil.brown.name> References: <6f01c382-8da5-5673-30db-0c0099d820b5@redhat.com> <0AB20C82-6200-46E0-A76C-62345DAF8A3A@redhat.com> <6cfb516d-0747-a749-b310-1368a2186307@redhat.com> <164444169523.27779.10904328736784652852@noble.neil.brown.name> <39e7bba4243eb2f16d99fefb43fef6b3ff741f87.camel@hammerspace.com> <164445109064.27779.13269022853115063257@noble.neil.brown.name> <6BAAA0D0-7212-480F-9C33-DA1F656FF09F@redhat.com> <164453369792.27779.10668875903268728405@noble.neil.brown.name> <299337F3-E83F-49EC-BB24-C9B859C9FB6D@redhat.com> <164479465866.27779.3680126986096452561@noble.neil.brown.name> MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Spam-Status: No, score=-2.9 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On 13 Feb 2022, at 18:24, NeilBrown wrote: > Document the requirement and make it "someone elses problem". > Your kernel patch to provide a random default mean a lack of > configuration will only hurt the container which lacks it - which nicely > localises the problem. I thought of another approach which was to have either mount.nfs or the kernel emit a warning if a client is not uniquified. Ben