linux-kernel - Re: [PATCH] NFSv4: nfs4_do_fsinfo() should not do implicit lease renewals

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <AF0DEDD8-9930-4E90-B49F-CBC8C759831D@oracle.com>
Date:   Mon, 16 Dec 2019 13:58:41 -0500
From:   Chuck Lever <chuck.lever@...cle.com>
To:     Robert Milkowski <rmilkowski@...il.com>
Cc:     Linux NFS Mailing List <linux-nfs@...r.kernel.org>,
        Trond Myklebust <trondmy@...merspace.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] NFSv4: nfs4_do_fsinfo() should not do implicit lease
 renewals



> On Dec 16, 2019, at 1:43 PM, Robert Milkowski <rmilkowski@...il.com> wrote:
> 
> 
> 
>> From: Trond Myklebust <trondmy@...merspace.com> 
> ...
>> NACK. The above argument only applies to legacy minor version 0 setups, and does not apply to NFSv4.1 or newer.
> 
> Correct. However many sites still use v4.0.

v4.1 and newer actually do renew the lease with the FSINFO COMPOUND,
since the COMPOUND starts with a SEQUENCE operation.

For v4.0, you can get the equivalent behavior by adding a RENEW to
the end of the FSINFO COMPOUND.


--
Chuck Lever