From owner-freebsd-stable@FreeBSD.ORG Wed Jan 6 20:09:56 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7AF041065676 for ; Wed, 6 Jan 2010 20:09:56 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) Received: from esa-annu.mail.uoguelph.ca (esa-annu.mail.uoguelph.ca [131.104.91.36]) by mx1.freebsd.org (Postfix) with ESMTP id 300C58FC1F for ; Wed, 6 Jan 2010 20:09:55 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApoEAF59REuDaFvI/2dsb2JhbADTUIQwBA X-IronPort-AV: E=Sophos;i="4.49,231,1262581200"; d="scan'208";a="60217140" Received: from darling.cs.uoguelph.ca ([131.104.91.200]) by esa-annu-pri.mail.uoguelph.ca with ESMTP; 06 Jan 2010 15:09:54 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by darling.cs.uoguelph.ca (Postfix) with ESMTP id 620649400A3; Wed, 6 Jan 2010 15:09:54 -0500 (EST) X-Virus-Scanned: amavisd-new at darling.cs.uoguelph.ca Received: from darling.cs.uoguelph.ca ([127.0.0.1]) by localhost (darling.cs.uoguelph.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5QemnNcNKN1d; Wed, 6 Jan 2010 15:09:53 -0500 (EST) Received: from muncher.cs.uoguelph.ca (muncher.cs.uoguelph.ca [131.104.91.102]) by darling.cs.uoguelph.ca (Postfix) with ESMTP id CC03694007B; Wed, 6 Jan 2010 15:09:53 -0500 (EST) Received: from localhost (rmacklem@localhost) by muncher.cs.uoguelph.ca (8.11.7p3+Sun/8.11.6) with ESMTP id o06KJnQ24922; Wed, 6 Jan 2010 15:19:49 -0500 (EST) X-Authentication-Warning: muncher.cs.uoguelph.ca: rmacklem owned process doing -bs Date: Wed, 6 Jan 2010 15:19:49 -0500 (EST) From: Rick Macklem X-X-Sender: rmacklem@muncher.cs.uoguelph.ca To: alan bryan In-Reply-To: <700718.76026.qm@web50501.mail.re2.yahoo.com> Message-ID: References: <700718.76026.qm@web50501.mail.re2.yahoo.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-stable@freebsd.org Subject: Re: Zombie NFS writing from FreeBSD clients to FreeBSD 8.0 server with ZFS X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jan 2010 20:09:56 -0000 On Wed, 6 Jan 2010, alan bryan wrote: > I have a AMD64 FreeBSD 8.0 server with ZFS filesystem being shared via NFS. These are being accessed by the clients. The clients are a mix of FreeBSD 6.2 32bit and FreeBSD 7.0 64bit. I have seen similar behavior from both versions of FreeBSD as clients. > [stuff related to lotsa writes being done snipped] > > Any ideas on what to try, where to look for more insight, etc...?? > It might be worth taking a look at the traffic. Wireshark (or a tcpdump packet capture read into wireshark) does a good job of interpreting NFS traffic. "tcpdump -s 0 -w host " run for a short period of time when has the problem and then looking at that in wireshark would at least allow you to see what the writes look like? - Are they the same write being retried over and over? - Is the server replying to them with an error? The above might give some insight into what's happening, rick