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;
From:   Florian Weimer <fweimer@redhat.com>
To:     Steve French <smfrench@gmail.com>
Cc:     David Howells <dhowells@redhat.com>,
        linux-nfs <linux-nfs@vger.kernel.org>,
        CIFS <linux-cifs@vger.kernel.org>, linux-afs@lists.infradead.org,
        ceph-devel@vger.kernel.org, keyrings@vger.kernel.org,
        Network Development <netdev@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: What's a good default TTL for DNS keys in the kernel
References: <3865908.1586874010@warthog.procyon.org.uk>
        <CAH2r5mv5p=WJQu2SbTn53FeTsXyN6ke_CgEjVARQ3fX8QAtK_w@mail.gmail.com>
Date:   Sat, 18 Apr 2020 20:10:53 +0200
In-Reply-To: <CAH2r5mv5p=WJQu2SbTn53FeTsXyN6ke_CgEjVARQ3fX8QAtK_w@mail.gmail.com>
        (Steve French's message of "Fri, 17 Apr 2020 18:23:53 -0500")
Message-ID: <87a738aclu.fsf@oldenburg2.str.redhat.com>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-nfs-owner@vger.kernel.org
Precedence: bulk

* Steve French:

>>> The question remains what the expected impact of TTL expiry is.  Will
>>> the kernel just perform a new DNS query if it needs one?
>
> 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.

Do you have reference to the source code implementation?  Thanks.

Florian