From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mondschein.lichtvoll.de ([194.150.191.11]:56846 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751374AbaGOPI3 convert rfc822-to-8bit (ORCPT ); Tue, 15 Jul 2014 11:08:29 -0400 From: Martin Steigerwald To: Chris Mason Cc: linux-btrfs@vger.kernel.org Subject: Re: BTRFS hang with 3.16-rc5 Date: Tue, 15 Jul 2014 17:08:27 +0200 Message-ID: <1984661.CMGGdWA6Ux@merkaba> In-Reply-To: <53C52AE4.6010803@fb.com> References: <1502954.OtX3SzjMKZ@merkaba> <29286605.flGgbBIpOj@merkaba> <53C52AE4.6010803@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: linux-btrfs-owner@vger.kernel.org List-ID: Am Dienstag, 15. Juli 2014, 09:21:40 schrieb Chris Mason: > On 07/14/2014 05:58 PM, Martin Steigerwald wrote: > > Am Montag, 14. Juli 2014, 16:12:22 schrieb Chris Mason: > >> On 07/14/2014 11:10 AM, Martin Steigerwald wrote: > >>> Am Montag, 14. Juli 2014, 17:04:22 schrieben Sie: > >>>> Hi! > >>>> > >>>> While with 3.16-rc3 and rc4 I didnīt have a BTRFS hang in several days > >>>> of > >>>> usage, with 3-16-rc5 I had a hang again. Less than a hour since booting > >>>> it. > >>>> > >>>> Since the hang bug I and others had with 3.15 and upto 3.16-rc2 usually > >>>> didnīt happen that quickly after boot and since backtrace looks a bit > >>>> different from what I have in memory, I post this in a new thread. > >>>> See thread "Blocked tasks on 3.15.1" for a discussion of previous hang > >>>> issues. > >>> > >>> Probably good to add some basic information on the filesystem: > >> Do you have compression enabled? I wasn't able to nail down the 3.15.1 > >> hang before vacation attacked me, but I'm hoping to track it down today. > > > > Yes. I have. > > > > It just hung again while I was playing PlaneShift. > > > > Back to 3.16-rc4 as rc5 seems to be broke here. > > The btrfs hang you're hitting goes back to 3.15. So 3.16-rc4 vs rc5 > shouldn't be a factor. Are you hitting other problems with 3.16? So far for this day 3.16-rc4 behaves nicely. With 3.16-rc5 I had a BTRFS hang twice yesterday. 3.16-rc4 before also behaved nicely for several days or well about a week here. So what I see here for now is: 3.15 until 3-16-rc2 an occassional hang, 3.16- rc3 and 3.16-rc4 okay, 3.16-rc5 two hangs in one day and then I stopped using it as I use this laptop for production :). This is on ThinkPad T520 with Sandybrige and 16 GiB RAM. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7