Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758631AbXJ2Sno (ORCPT ); Mon, 29 Oct 2007 14:43:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753445AbXJ2Snh (ORCPT ); Mon, 29 Oct 2007 14:43:37 -0400 Received: from pat.uio.no ([129.240.10.15]:60147 "EHLO pat.uio.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752894AbXJ2Sng (ORCPT ); Mon, 29 Oct 2007 14:43:36 -0400 Subject: Re: pdflush stuck in D state with v2.6.24-rc1-192-gef49c32 From: Trond Myklebust To: Florin Iucha Cc: Linux Kernel Mailing List In-Reply-To: <20071029150154.GC25561@iucha.net> References: <20071028152428.GJ7918@iucha.net> <1193665619.7396.8.camel@heimdal.trondhjem.org> <20071029150154.GC25561@iucha.net> Content-Type: text/plain Date: Mon, 29 Oct 2007 14:43:32 -0400 Message-Id: <1193683412.7497.10.camel@heimdal.trondhjem.org> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: 7bit X-UiO-Resend: resent X-UiO-ClamAV-Virus: No X-UiO-Spam-info: not spam, SpamAssassin (score=-0.6, required=12.0, autolearn=disabled, AWL=-0.571) X-UiO-Scanned: A5945EDADEF4880F4025F56B8BF721675214DABC X-UiO-SPAM-Test: remote_host: 129.240.10.9 spam_score: -5 maxlevel 200 minaction 2 bait 0 mail/h: 605 total 4790743 max/h 8345 blacklist 0 greylist 0 ratelimit 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1296 Lines: 34 On Mon, 2007-10-29 at 10:01 -0500, Florin Iucha wrote: > On Mon, Oct 29, 2007 at 09:46:59AM -0400, Trond Myklebust wrote: > > > What could cause this? I use NFS4 to automount the home directories > > > from a Solaris10 server, and this box found a few bugs in the NFS4 > > > code (fixed in the 2.6.22 kernel). > > > > > > I'll try running with 2.6.23 again for a few days, to see if I get the > > > pdflush stuck. Any other ideas? > > > > One of them appears to be waiting for i/o congestion to clear up. If the > > filesystem is NFS, then that means that some other thread is busy > > writing data out to the server. You'll need to look at the rest of the > > thread dump to figure out which thread is writing the data out, and > > where it is getting stuck. > > Trond, > > The full dmesg is at http://iucha.net/2.6.24-rc1/dmesg.stuck_pdflush.gz > > Cheers, > florin I can't see any evidence of NFS traffic at all in those traces, but there is a fuse process that is sleeping in :fuse:fuse_dev_read(). Could that perhaps be relevant. Trond - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/