Return-Path: Received: from fieldses.org ([173.255.197.46]:60426 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757253AbcDHSlN (ORCPT ); Fri, 8 Apr 2016 14:41:13 -0400 Date: Fri, 8 Apr 2016 14:41:11 -0400 To: Holger =?utf-8?Q?Hoffst=C3=A4tte?= Cc: linux-nfs@vger.kernel.org Subject: Re: Strange "SECINFO: security flavor .." messages Message-ID: <20160408184111.GB25179@fieldses.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 In-Reply-To: From: bfields@fieldses.org (J. Bruce Fields) Sender: linux-nfs-owner@vger.kernel.org List-ID: On Thu, Apr 07, 2016 at 10:38:55PM +0000, Holger Hoffstätte wrote: > Hi, > > After restarting my server and a client re-automounts, I see the > following in the server's dmesg: > > [ 706.454187] NFS: SECINFO: security flavor 390003 is not supported > [ 706.454621] NFS: SECINFO: security flavor 390004 is not supported > [ 706.455057] NFS: SECINFO: security flavor 390005 is not supported > > I've been completely unsuccessful in trying to discern what these > mean and how I can get rid of them; they don't seem to be harmful > since everything else works just fine, and has done so for years. > I think this started with NFS 4.2 not too long ago, but don't remember > for certain. The server exports several mounts, ext4 and xfs. > Clients use only NFS v4 via automount. All on 4.4.6. What does "exportfs -v" say? What about "cat /proc/net/rpc/nfsd.export/content" right after the client's mount/remount?