From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:55357 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750732AbaBXGRP (ORCPT ); Mon, 24 Feb 2014 01:17:15 -0500 Received: from merlin by mail1.merlins.org with local (Exim 4.80 #2) id 1WHoqo-00074L-Mv for ; Sun, 23 Feb 2014 22:17:14 -0800 Date: Sun, 23 Feb 2014 22:17:14 -0800 From: Marc MERLIN To: linux-btrfs@vger.kernel.org Subject: Re: 3.13.5 kernel hangs some processes with btrfs Message-ID: <20140224061714.GC15937@merlins.org> References: <20140224061426.GB15937@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20140224061426.GB15937@merlins.org> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Sun, Feb 23, 2014 at 10:14:26PM -0800, Marc MERLIN wrote: > Does someone know how I can debug further why this is hanging? > > It seems that accessing a certain directory on one of my btrfs filesystems > causes this. > > The rest of my system seems ok, as long as I'm not touching this filesystem. > > Is this a bug, or a performance problem? Mmmh, this bug might be part of the problem: gargamel:/mnt# btrfs scrub start btrfs_pool2 ERROR: scrub is already running. To cancel use 'btrfs scrub cancel btrfs_pool2'. To see the status use 'btrfs scrub status [-d] btrfs_pool2'. gargamel:/mnt# btrfs scrub cancel btrfs_pool2 ERROR: scrub cancel failed on btrfs_pool2: not running gargamel:/mnt# btrfs scrub status btrfs_pool2 scrub status for cb9df6d3-a528-4afc-9a45-4fed5ec358d6 scrub started at Sun Feb 23 18:29:39 2014, running for 5 seconds total bytes scrubbed: 0.00 with 0 errors gargamel:/mnt# btrfs scrub cancel btrfs_pool2 ERROR: scrub cancel failed on btrfs_pool2: not running gargamel:/mnt# btrfs scrub status btrfs_pool2 scrub status for cb9df6d3-a528-4afc-9a45-4fed5ec358d6 scrub started at Sun Feb 23 18:29:39 2014, running for 5 seconds total bytes scrubbed: 0.00 with 0 errors gargamel:/mnt# Note that it says running for 5 seconds, but it started 4H ago. Any idea what's going on here? Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/