From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:38878 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751773AbbAEBCv (ORCPT ); Sun, 4 Jan 2015 20:02:51 -0500 Received: from kw-mxauth.gw.nic.fujitsu.com (unknown [10.0.237.134]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 4B2553EE16B for ; Mon, 5 Jan 2015 10:02:50 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by kw-mxauth.gw.nic.fujitsu.com (Postfix) with ESMTP id 5168DAC0305 for ; Mon, 5 Jan 2015 10:02:49 +0900 (JST) Received: from g01jpfmpwkw03.exch.g01.fujitsu.local (g01jpfmpwkw03.exch.g01.fujitsu.local [10.0.193.57]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 02D96E08004 for ; Mon, 5 Jan 2015 10:02:49 +0900 (JST) Message-ID: <54A9E2A5.50909@jp.fujitsu.com> Date: Mon, 5 Jan 2015 10:02:29 +0900 From: Satoru Takeuchi MIME-Version: 1.0 To: Petr Janecek CC: , , Timofey Titovets Subject: Re: Debian/Jessie 3.16.7-ckt2-1 kernel error References: <201412241202.59568.russell@coker.com.au> <549A8B9B.5000005@jp.fujitsu.com> <549B5D4C.1070804@jp.fujitsu.com> <20141227153621.GB19957@atrey.karlin.mff.cuni.cz> In-Reply-To: <20141227153621.GB19957@atrey.karlin.mff.cuni.cz> Content-Type: text/plain; charset="windows-1252"; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi Petr, On 2014/12/28 0:36, Petr Janecek wrote: > Hello Satoru and all, > > that Oct. report was the only time I've experienced the error, so I > don't have much to add. I can try to answer your questions: > >>> Here are my questions. >>> >>> 1. Is your system "btrfs scrub" clean? > > yes, > >>> 2. Is this message shown every boot time? > > no, I have seen them only during one boot > >>> 3. Is this message shown only in boot? > > As in my Oct. email > http://permalink.gmane.org/gmane.comp.file-systems.btrfs/39721 > I've seen a similar one after creating a subvolume on a new fs. > But it was during the same boot. > >>> 4. When this message is started to be shown? >>> 5. Do you have any trouble, change your operation or configuration >>> just before the answer of Q4 ? > > a disk was added to the fs and balance has been run. The balance > crashed, as in https://bugzilla.kernel.org/show_bug.cgi?id=64961 > (probably unrelated). After reboot, I've seen the messages. > >> Additional questions. >> Q5. Could you give me your kernel configuration? >> At least, could you tell me whether your kernel >> enabled CONFIG_PREEMPT or not? > > CONFIG_PREEMPT_VOLUNTARY=y > >> Q6. If the answer of Q1 is correct, please give me the >> file system image which can be captured by the following command. > > Sorry, the fs's are long gone. I continued to run similar workloads on > that test box, but these errors never appeared again. Thank you for giving me information. So, further investigation of this problem seems to be hard. Please give us the above-mentioned information if this problem happens again. Thanks, Satoru > > > Regards, > > Petr > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >