From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mondschein.lichtvoll.de ([194.150.191.11]:60749 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750795AbbEXJqR convert rfc822-to-8bit (ORCPT ); Sun, 24 May 2015 05:46:17 -0400 Received: from merkaba.localnet (ppp-88-217-111-160.dynamic.mnet-online.de [88.217.111.160]) by mail.lichtvoll.de (Postfix) with ESMTPSA id 2B7D211E for ; Sun, 24 May 2015 11:46:16 +0200 (CEST) From: Martin Steigerwald To: linux-btrfs@vger.kernel.org Subject: [BUG] [4.1-rc4] hung tasks on resume Date: Sun, 24 May 2015 11:46:15 +0200 Message-ID: <38718451.QrrZiIAI7Z@merkaba> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi! I had another BTRFS hangı. It may be related to the kworker at 100% on write issue that still happened with 4.0 kernels² as / device was 100% allocated and it seems that bug doesn´t happen if there is still device space left to be allocated for chunks. But this time it was on resume from hibernation. All I could get was a backtrace on the console. IMHO this still is not production ready, despite any other sayings. [1] [Bug 98821] New: btrfs hung tasks on resume from hibernation https://bugzilla.kernel.org/show_bug.cgi?id=98821 [2] [Bug 90401] New: btrfs kworker thread uses up 100% of a Sandybridge core for minutes on random write into big file https://bugzilla.kernel.org/show_bug.cgi?id=90401 Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7