Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1759671AbaGOVrJ (ORCPT <rfc822;w@1wt.eu>);
	Tue, 15 Jul 2014 17:47:09 -0400
Received: from frost.carfax.org.uk ([85.119.82.111]:45759 "EHLO
	frost.carfax.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1759571AbaGOVrE (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 15 Jul 2014 17:47:04 -0400
Date: Tue, 15 Jul 2014 22:47:01 +0100
From: Hugo Mills <hugo-lkml@carfax.org.uk>
To: Norbert Preining <preining@logic.at>
Cc: Btrfs mailing list <linux-btrfs@vger.kernel.org>,
        linux-kernel@vger.kernel.org
Subject: Re: btrfs hanging since 3.16-rc3 or so
Message-ID: <20140715214701.GD4834@carfax.org.uk>
Mail-Followup-To: Hugo Mills <hugo-lkml@carfax.org.uk>,
	Norbert Preining <preining@logic.at>,
	Btrfs mailing list <linux-btrfs@vger.kernel.org>,
	linux-kernel@vger.kernel.org
References: <20140715134046.GX23620@auth.logic.tuwien.ac.at>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="DiL7RhKs8rK9YGuF"
Content-Disposition: inline
In-Reply-To: <20140715134046.GX23620@auth.logic.tuwien.ac.at>
X-GPG-Fingerprint: B25A 5A66 69D3 1E15 2DD8  0998 BF73 F4E5 65E7 4AC0
X-GPG-Key: 65E74AC0
X-Parrot: It is no more. It has joined the choir invisible.
X-IRC-Nicks: darksatanic darkersatanic darkling darkthing
User-Agent: Mutt/1.5.23 (2014-03-12)
X-frost.carfax.org.uk-Spam-Score: 0.0 (/)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


--DiL7RhKs8rK9YGuF
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

cc linux-btrfs list

On Tue, Jul 15, 2014 at 10:40:46PM +0900, Norbert Preining wrote:
> Dear all
> 
> (please keep Cc)
> 
> Since 3.16-rc3 or so I regularly get btrfs hanging in some transations.
> 
> Usually during apt-get upgrade or some other large file operations
> (cowbuilder building of packages).
> 
> The log files give me for loads of processes things like:
> [ 6236.746546] INFO: task aptitude:22775 blocked for more than 120 seconds.
> [ 6236.746547]       Tainted: G        W  O  3.16.0-rc5 #27
> [ 6236.746548] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [ 6236.746549] aptitude        D ffff8800b21a3868     0 22775  22709 0x00000000
> [ 6236.746550]  ffff88003644fd10 0000000000000082 ffffffff81a15500 ffff88003644ffd8
> [ 6236.746552]  ffff8800b21a3430 0000000000011c00 ffff880147da9c30 ffff880147da9c30
> [ 6236.746553]  ffff88003644fd58 ffff880034b3ed48 ffff880034b3ed38 ffff88003644fd20
> [ 6236.746555] Call Trace:
> [ 6236.746557]  [<ffffffff81585b4a>] schedule+0x64/0x66
> [ 6236.746560]  [<ffffffff811bb22e>] btrfs_wait_logged_extents+0xa4/0xdc
> [ 6236.746561]  [<ffffffff810635c1>] ? finish_wait+0x5d/0x5d
> [ 6236.746564]  [<ffffffff811d9489>] btrfs_sync_log+0x5ef/0x8a2
> [ 6236.746567]  [<ffffffff811b43cf>] btrfs_sync_file+0x21b/0x24d
> [ 6236.746569]  [<ffffffff811b43cf>] ? btrfs_sync_file+0x21b/0x24d
> [ 6236.746571]  [<ffffffff8110db8a>] vfs_fsync_range+0x1c/0x1e
> [ 6236.746574]  [<ffffffff810d1681>] SyS_msync+0x15d/0x1ea
> [ 6236.746575]  [<ffffffff81588712>] system_call_fastpath+0x16/0x1b
> 
> THis is aptitude, but I have all the other tasks accessing the disk
> hanging, too.
> 
> This time, issueing a Sysrq-s for emergency syncing did the laptop
> out of the hang.
> 
> Hardware: Sonly VAIO Pro 13
> Distribution: Debian/sid
> self compiled kernel, config on request.
> 
> Please let me know if there is anything else I can provide.
> 
> Thanks a lot
> 
> Norbert
> 
> ------------------------------------------------------------------------
> PREINING, Norbert                               http://www.preining.info
> JAIST, Japan                                 TeX Live & Debian Developer
> GPG: 0x860CDC13   fp: F7D8 A928 26E3 16A1 9FA0  ACF0 6CAC A448 860C DC13
> ------------------------------------------------------------------------

-- 
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
  PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
      --- Normaliser unix c'est comme pasteuriser le Camembert ---       

--DiL7RhKs8rK9YGuF
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: Digital signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=ml6g
-----END PGP SIGNATURE-----

--DiL7RhKs8rK9YGuF--
--
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/