Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp2449473ybz; Sun, 19 Apr 2020 01:38:39 -0700 (PDT) X-Google-Smtp-Source: APiQypJ1Kz/D8I//NCVefMK7p+fdGms7wfPFcb+M1oKviOMycUt+1eJoRL47Bw1HplGRGanJtpE7 X-Received: by 2002:a05:6402:1b0b:: with SMTP id by11mr9526393edb.269.1587285519646; Sun, 19 Apr 2020 01:38:39 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587285519; cv=none; d=google.com; s=arc-20160816; b=t1F8Ua3Q1hLU3PVKFZ82CnxjTynFT73U75E2QFAK/cG9V5JK2nXVBX5I0spXcZR6Ra 8CtLz3jcbPsP/nOG0Zl2GcpB5V2NIModm8nuP+S9AM9LrLw090kJq2iaiEaESW3FCo8w Q3SU2EV14/HWJcM7JajUr7PLtp64tGrv0sbAIfxNJ7xno68OPwVlyw0+yPBeb3cYkDmJ KkfCaSKgAVsEdvspByAnYNW3UT6mMq6o6nJZTpplqsOSl+DaCdEpPjQ5M7aodaq7MqZo nw/yHQryHOyTiiJAiVO/lUBnthz9jnJ9HBDziPZx5IQ9xV/dSy18R2rBYFdE6fo1qV8y RiLg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:content-id:mime-version :subject:cc:to:references:in-reply-to:from:organization :dkim-signature; bh=gtE/RAI8Ll8mxlz3GjJNNnyp/GGzHjOzYL41aghGZqo=; b=0/8k+WJZ87Y8SfpjKZoWbPnMJOcTrYx6ln2VxgNG45kyHjXy9XOfAQrtUEDnKlFwAW S6sKYMtIsi0+wZmfFCYwoAAnYsfivkl9zzCpgOtlRyOklIDLcibYGKTWnhsv40n7wbgQ iQGFlSnWlOFxL78xOH2OI/wQrcCY4lpwrA2/Sgq2MCtVtSOkS/YTXackwbYnmAtbuOEr 5+J1hZ3wWFA8vdYtgDP20x98KZFtVOMrpPAiJtTH1DyTH3oLjX5EyRae17uX8iGDlh/P 43WHzfVRR+OAd11G0FbD2HJ33whviJsenJgaOFP5bw8JbPaVY6iQknl5i7v0gXv1P+5m sdtg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=KpAID+zl; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 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 vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y4si892589edv.549.2020.04.19.01.38.07; Sun, 19 Apr 2020 01:38:39 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=KpAID+zl; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 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 S1725994AbgDSIiC (ORCPT + 99 others); Sun, 19 Apr 2020 04:38:02 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:46192 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725988AbgDSIiB (ORCPT ); Sun, 19 Apr 2020 04:38:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587285480; 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=gtE/RAI8Ll8mxlz3GjJNNnyp/GGzHjOzYL41aghGZqo=; b=KpAID+zlhBw8BsNROAh+bs9SIC01CM/8ER1TUrEL+ZeP4VyaJE5olj+zBGO7zESVinowXu vZinpEcgLEvBvWImcSYtA3+kIXa+VbSTLf5opn5+jeRG72bO7AmvJMfZbs3IvzgobFgesg +ZONGV+j+1K6DsRna1BYij9tgFJLr3U= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-376-LHnNx2NRM0CC-We1R3FlPQ-1; Sun, 19 Apr 2020 04:37:56 -0400 X-MC-Unique: LHnNx2NRM0CC-We1R3FlPQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D694318C35A0; Sun, 19 Apr 2020 08:37:54 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-113-129.rdu2.redhat.com [10.10.113.129]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0AB8FA1056; Sun, 19 Apr 2020 08:37:52 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <3865908.1586874010@warthog.procyon.org.uk> To: Steve French Cc: dhowells@redhat.com, linux-nfs , CIFS , linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org, keyrings@vger.kernel.org, Network Development , LKML , fweimer@redhat.com Subject: Re: What's a good default TTL for DNS keys in the kernel MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <927452.1587285472.1@warthog.procyon.org.uk> Date: Sun, 19 Apr 2020 09:37:52 +0100 Message-ID: <927453.1587285472@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Steve French wrote: > For SMB3/CIFS mounts, Paulo added support last year for automatic > reconnect if the IP address of the server changes. It also is helpful > when DFS (global name space) addresses change. What happens if the IP address the superblock is going to changes, then another mount is made back to the original IP address? Does the second mount just pick the original superblock? David