From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422733AbXCBDCQ (ORCPT ); Thu, 1 Mar 2007 22:02:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422798AbXCBDCQ (ORCPT ); Thu, 1 Mar 2007 22:02:16 -0500 Received: from iucha.net ([209.98.146.184]:42667 "EHLO mail.iucha.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422733AbXCBDCO (ORCPT ); Thu, 1 Mar 2007 22:02:14 -0500 Date: Thu, 1 Mar 2007 21:02:13 -0600 To: Andrew Morton Cc: Linux Kernel Mailing List , Trond Myklebust Subject: Re: 2.6.20-rc1: CIFS cheers, NFS4 jeers Message-ID: <20070302030212.GC29073@iucha.net> References: <20070226064500.GZ29073@iucha.net> <20070228215234.d86a4886.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UxbNYeHgyZbry9TP" Content-Disposition: inline In-Reply-To: <20070228215234.d86a4886.akpm@linux-foundation.org> X-GPG-Key: http://iucha.net/florin_iucha.gpg X-GPG-Fingerprint: 5E59 C2E7 941E B592 3BA4 7DCF 343D 2B14 2376 6F5B User-Agent: Mutt/1.5.13 (2006-08-11) From: florin@iucha.net (Florin Iucha) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --UxbNYeHgyZbry9TP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Feb 28, 2007 at 09:52:34PM -0800, Andrew Morton wrote: > On Mon, 26 Feb 2007 00:45:00 -0600 florin@iucha.net (Florin Iucha) wrote: >=20 > > Hello, it's me and my 70 GB of photos again. [snip] > > Running 'top', one core is idle and the other is 99% waiting, while > > the 'cp' program is in 'D' state. Also, after NFSv4 stalls, invokations > > of 'lsof' stall as well. I can 'ssh' into the box without problems. >=20 > and >=20 > > The kernel on the client is 2.6.21-rc1 (but it echoes problems I > > reported in December with 2.6.20 series as well) as can be seen from > > the kernel logs. > >=20 > > I have corrected the links: > >=20 > > http://iucha.net/21-rc1/before.1 > > http://iucha.net/21-rc1/after.1 > > http://iucha.net/21-rc1/config-2.6.21-rc1 > >=20 >=20 > The relevant part is: >=20 > [ 1215.657827] cp D 000000f86f105704 0 2859 2843 = (NOTLB) > [ 1215.657833] ffff81007343faa8 0000000000000082 0000000000000000 ffff81= 007343fb58 > [ 1215.657837] 0000000000000002 ffff81007343faa8 0000000000000008 ffff81= 007e578ee0 > [ 1215.657842] ffff810002f4a080 0000000000002150 ffff81007e5790b8 000000= 017343fb50 > [ 1215.657847] Call Trace: > [ 1215.657852] [] io_schedule+0x28/0x34 > [ 1215.657856] [] sync_page+0x41/0x45 > [ 1215.657859] [] __wait_on_bit+0x45/0x77 > [ 1215.657862] [] sync_page+0x0/0x45 > [ 1215.657867] [] wait_on_page_bit+0x6e/0x75 > [ 1215.657870] [] wake_bit_function+0x0/0x2a > [ 1215.657874] [] pagevec_lookup_tag+0x22/0x2b > [ 1215.657878] [] wait_on_page_writeback_range+0x6e/0x= 142 > [ 1215.657885] [] filemap_fdatawait+0x20/0x22 > [ 1215.657889] [] filemap_write_and_wait+0x29/0x38 > [ 1215.657894] [] nfs_setattr+0xa0/0x11a > [ 1215.657897] [] link_path_walk+0xe8/0xfc > [ 1215.657902] [] autoremove_wake_function+0x0/0x38 > [ 1215.657907] [] poison_obj+0x27/0x32 > [ 1215.657910] [] current_fs_time+0x3f/0x41 > [ 1215.657913] [] __user_walk_fd+0x53/0x62 > [ 1215.657918] [] notify_change+0x129/0x238 > [ 1215.657923] [] do_utimes+0xfc/0x126 > [ 1215.657928] [] _raw_spin_lock+0xf3/0xf9 > [ 1215.657933] [] sys_futimesat+0x45/0x56 > [ 1215.657937] [] sys_utimes+0x14/0x16 > [ 1215.657941] [] system_call+0x7e/0x83 >=20 > seems that we've simply lost an IO completion. >=20 > Was 2.6.19 OK? I just tested, 2.6.19 is OK! Kernel log output after the cp and sync completed are at http://iucha.net/19/before http://iucha.net/19/after (after echo t > /proc/sysrq-trigger) When I get a chance I will try again, and report if it fails. But so far it seems fine: df and lsof work as expected. Thanks, florin --=20 Bruce Schneier expects the Spanish Inquisition. http://geekz.co.uk/schneierfacts/fact/163 --UxbNYeHgyZbry9TP Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFF55O0ND0rFCN2b1sRAnkqAJ4+oRcw4jGsdILANrQGpGRCFepuOgCdG4ua UUMeWUftrrqXzkjixt47+lA= =SrLF -----END PGP SIGNATURE----- --UxbNYeHgyZbry9TP--