From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761202AbXIUQYv (ORCPT ); Fri, 21 Sep 2007 12:24:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759482AbXIUQYp (ORCPT ); Fri, 21 Sep 2007 12:24:45 -0400 Received: from mx2.netapp.com ([216.240.18.37]:10810 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757959AbXIUQYo (ORCPT ); Fri, 21 Sep 2007 12:24:44 -0400 X-IronPort-AV: E=Sophos;i="4.20,284,1186383600"; d="scan'208";a="106441794" Subject: Re: [NFS] NFS on loopback locks up entire system(2.6.23-rc6)? From: Trond Myklebust To: Chakri n Cc: nfs@lists.sourceforge.net, linux-kernel@vger.kernel.org In-Reply-To: <92cbf19b0709210920p3647788dl11d8c4e0cee1f70f@mail.gmail.com> References: <92cbf19b0709201722k6265e647x31b7d25bc54b63a0@mail.gmail.com> <1190335423.6763.180.camel@heimdal.trondhjem.org> <92cbf19b0709202012s375c6f54m588987b4bbf552bc@mail.gmail.com> <1190384005.6680.20.camel@heimdal.trondhjem.org> <92cbf19b0709210920p3647788dl11d8c4e0cee1f70f@mail.gmail.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Network Appliance Inc Date: Fri, 21 Sep 2007 12:24:41 -0400 Message-Id: <1190391881.6680.73.camel@heimdal.trondhjem.org> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 X-OriginalArrivalTime: 21 Sep 2007 16:24:42.0584 (UTC) FILETIME=[EA4B1D80:01C7FC6B] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2007-09-21 at 09:20 -0700, Chakri n wrote: > Thanks. > > I was using flock (BSD locking) and I think the problem should be > solved if I move my application to use POSIX locks. Yup. > And any option to avoid processes waiting indefinitely to free pages > from NFS requests waiting on unresponsive NFS server? The only solution I know of is to use soft mounts, but that brings another set of problems: 1. most applications don't know how to recover safely from an EIO error. 2. You lose data. Cheers Trond