From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935558AbYEBPrV (ORCPT ); Fri, 2 May 2008 11:47:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932231AbYEBPrM (ORCPT ); Fri, 2 May 2008 11:47:12 -0400 Received: from wr-out-0506.google.com ([64.233.184.234]:30428 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1764227AbYEBPrL (ORCPT ); Fri, 2 May 2008 11:47:11 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=xemfRSU2LCPYeCsEmTq+VXJQCcoLf95V4kuRwlsjIZVgImDUX2vVsY/CTJYmPYQF8Lkx2FYEA623gVh6EmI/IQEjSGBSkOE6insUtQOgx94Vw1udyhr3pBLAEt19GrJ8oqtH5dyRSiT6vyF1w2WKv2WqCJlaVipsvBThlxA4n2g= Message-ID: <2c0942db0805020847q2fdc0480m3eb892bf2bd0b3a@mail.gmail.com> Date: Fri, 2 May 2008 08:47:07 -0700 From: "Ray Lee" To: "Jesper Krogh" Subject: Re: Many open/close on same files yeilds "No such file or directory". Cc: "Andrew Morton" , linux-kernel@vger.kernel.org In-Reply-To: <481B3115.30705@krogh.cc> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <4819E316.7000607@krogh.cc> <20080501223938.921f7cd2.akpm@linux-foundation.org> <481ACEC4.2040205@krogh.cc> <481B3115.30705@krogh.cc> X-Google-Sender-Auth: 3e5f2500573a1064 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 2, 2008 at 8:19 AM, Jesper Krogh wrote: > Jesper Krogh wrote: > > > > > > I'd suspect that after 1e8 loops your CPU got too hot and started to > > > misbehave. > > > > > > > Hardware is an Sun Fire X4600 (8xdual-core AMD64 processors). The > > problem seem to be tied to this filesystem. (I cannot havent been able > > to reproduce it on the /-mounted disk of the same system. So if a cpu > > problem.. then it shouldn't be tied to a specific filesystem? > > > > This is the only activity on the system .. so a load of 1 / 16cpus. > > > > I've tried to explore this suggestion (the best I could). > > There are 2 ext3 filesystems locally mounted. / and this one. Running 16 > parallel runs of this program on a file on the /-mounted filesystem cannot > reproduce the problem. If it was linked to hot hardware, I believe I should > be able to reproduce it this way. The servers are in a 17 degress > serverroom. > > It changes alot when.. it actually happens. The "earliest ones" has been > from 200000 cycles. Run 16 in parallel on /, and another 16 simultaneously on the trouble filesystem? If you continue to get errors only on the 'trouble' filesystem, and no errors start occurring on / coincident, then it sounds pretty localized. BTW, I may have missed this earlier, but does it happen *anywhere* on the troublesome filesystem (ie, in a newly created subdirectory)?