From owner-freebsd-questions@FreeBSD.ORG Thu May 23 20:04:18 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 749571D5 for ; Thu, 23 May 2013 20:04:18 +0000 (UTC) (envelope-from Albert.Shih@obspm.fr) Received: from smtp-int-m.obspm.fr (smtp-int-m.obspm.fr [145.238.187.15]) by mx1.freebsd.org (Postfix) with ESMTP id 12E42E0C for ; Thu, 23 May 2013 20:04:17 +0000 (UTC) Received: from pcjas.obspm.fr (pcjas.obspm.fr [145.238.184.233]) by smtp-int-m.obspm.fr (8.14.3/8.14.3/SIO Observatoire de Paris - 07/2009) with ESMTP id r4NK4DLZ002273 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Thu, 23 May 2013 22:04:14 +0200 Date: Thu, 23 May 2013 22:04:13 +0200 From: Albert Shih To: freebsd-questions@freebsd.org Subject: Strange behavior of NFS/ZFS on 9.0 Message-ID: <20130523200413.GD3616@pcjas.obspm.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.5.21 (2010-09-15) X-Miltered: at smtp-int-m.obspm.fr with ID 519E763D.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 519E763D.000/145.238.184.233/pcjas.obspm.fr/pcjas.obspm.fr/ X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 May 2013 20:04:18 -0000 Hi all, I've a server under FreeBSD 9.0 with a large ZFS pool (~ 150To) This server is use mainly for backup and NFS server, he also have 4 Gb/s interface bound with LACP. If the nfs client is close to the server (physical distance) everything is fine. When the client is far away (NFS over tcp of course) from the client side everything work (it's slow but it's working), the strange thing is when the client do some « heavy » acces to the server through NFS, we cannot ping the server during 10-30 sec and the ping come back, and some time later ( ~10-15 min) again we cannot ping the server. When I quote « heavy » it's because the traffic is ~ 40 Mbit/s. I'm sure of the relation between client acces through NFS and lost ping. Anyone have a idea. Regards. -- Albert SHIH DIO bâtiment 15 Observatoire de Paris 5 Place Jules Janssen 92195 Meudon Cedex France Téléphone : +33 1 45 07 76 26/+33 6 86 69 95 71 xmpp: jas@obspm.fr Heure local/Local time: jeu 23 mai 2013 21:58:21 CEST