Return-Path: Received: from mx2.netapp.com ([216.240.18.37]:34900 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752263AbZAJQAd (ORCPT ); Sat, 10 Jan 2009 11:00:33 -0500 Subject: Re: [PATCH 0/3] NFS regression in 2.6.26?, "task blocked for more than 120 seconds" From: Trond Myklebust To: Kasparek Tomas Cc: linux-nfs@vger.kernel.org In-Reply-To: <20090110102458.GG47559@fit.vutbr.cz> References: <20081202152256.GI47559@fit.vutbr.cz> <1228232222.3090.5.camel@heimdal.trondhjem.org> <20081202162625.GM47559@fit.vutbr.cz> <1228241407.3090.7.camel@heimdal.trondhjem.org> <20081204102314.GW47559@fit.vutbr.cz> <1229284201.6463.98.camel@heimdal.trondhjem.org> <20081216120547.GS47559@fit.vutbr.cz> <1230071647.17701.27.camel@heimdal.trondhjem.org> <20090109145638.GC47559@fit.vutbr.cz> <1231523966.7179.67.camel@heimdal.trondhjem.org> <20090110102458.GG47559@fit.vutbr.cz> Content-Type: text/plain Date: Sat, 10 Jan 2009 11:00:00 -0500 Message-Id: <1231603200.29646.5.camel@heimdal.trondhjem.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Sat, 2009-01-10 at 11:24 +0100, Kasparek Tomas wrote: > > Wait. You're using amd when testing? Could you please rather retry using > > just a static mount? amd has historically had way too many bugs > > (particularly w.r.t. tcp) to be considered a reliable test. > > Will try, but with static mount there is one stable TCP connection between > client and server so this problem can not happen at all isn't it? It can. The client will automatically disconnect when the mountpoint has not used for 5 minutes. As for amd, I know that older versions used to set absolutely insane timeouts for tcp connections. They'd use the same defaults as UDP, IOW timeo=7, retrans=3 ('cat /proc/mounts' should be able to tell you if that's the case for your setup). -- Trond Myklebust Linux NFS client maintainer NetApp Trond.Myklebust@netapp.com www.netapp.com