Return-Path: Received: from smtp.domeneshop.no ([194.63.252.54]:54506 "EHLO smtp.domeneshop.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751442AbaFBH2J (ORCPT ); Mon, 2 Jun 2014 03:28:09 -0400 Message-ID: <538C27C4.2090509@skagestad.org> Date: Mon, 02 Jun 2014 09:29:08 +0200 From: =?ISO-8859-1?Q?Torbj=F8rn?= MIME-Version: 1.0 To: Marc MERLIN CC: Chris Mason , linux-btrfs Subject: Re: 3.15-rc6 - btrfs-transacti:4157 blocked for more than 120 seconds. References: <5384D53C.9070509@skagestad.org> <5384E2FA.1070509@fb.com> <5384F0B4.7040309@skagestad.org> <5384F8A4.1050206@skagestad.org> <5384FAB2.6000204@fb.com> <5385007A.4000301@fb.com> <538579F1.10106@skagestad.org> <5385E794.1030002@fb.com> <5385F938.9010009@skagestad.org> <20140601212926.GH22161@merlins.org> In-Reply-To: <20140601212926.GH22161@merlins.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 01. juni 2014 23:29, Marc MERLIN wrote: > On Wed, May 28, 2014 at 04:56:56PM +0200, Torbjørn wrote: >> On 05/28/2014 03:41 PM, Chris Mason wrote: >>> On 05/28/2014 01:53 AM, Torbjørn wrote: >>> >>>> It's actually a raid10 array of 11 dm-crypt devices. >>>> I'm able to read data from the array (accessing files), and also read >>>> directly from all the underlying dm-crypt devices using dd, if that's >>>> what you meant. >>>> >>>> I have not rebooted the system since that dmesg, so it's still stuck in >>>> the same state. >>>> I can keep it like that for some days. The system is not critical at all. >>>> >>> Thanks, >>> >>> Can you please capture the result of sysrq-t and sysrq-l? Maybe the IO >>> is stuck in a thread that isn't in the D state. >>> >>> -chris >> The output of sysrq-t was too much data for pastebin, will send both >> to you as attachments outside of the list. > Considering I have experienced this with with 3.15rc but wasn't able to > save a sysrq since my save file and syslog got lost, did you find out > anything from that? > > Thanks, > Marc Hi Marc, I have not done any real investigation of those yet, so no. The server is mainly for testing, so I had already netconsole set up for it. Btrfs only blocked on the one array though. Root is btrfs raid1 with 2 devices, and it was operating as normal. If it's of any interest, I can make the captured logs available for download. -- Torbjørn