Return-Path: Received: from smtp110.prem.mail.ac4.yahoo.com ([76.13.13.93]:38727 "HELO smtp110.prem.mail.ac4.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757414Ab0HaOge (ORCPT ); Tue, 31 Aug 2010 10:36:34 -0400 Date: Tue, 31 Aug 2010 09:36:30 -0500 (CDT) From: Christoph Lameter To: Kian Mohageri cc: davidr@ressman.org, linux-nfs@vger.kernel.org, Trond Myklebust Subject: Re: fsync/wb deadlocks in 2.6.32 In-Reply-To: Message-ID: References: Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 We got another instance yesterday. A large number of machines simultaneously started spewing the kernel messages. Had to reboot to get the state cleared up. Very very annoying. Anyone know a reason for these writeback deadlocks?