From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7161C04EB8 for ; Tue, 4 Dec 2018 06:13:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 492A22087F for ; Tue, 4 Dec 2018 06:13:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=wpkg.org header.i=@wpkg.org header.b="HWeCVnNW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 492A22087F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=wpkg.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-btrfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726007AbeLDGN6 (ORCPT ); Tue, 4 Dec 2018 01:13:58 -0500 Received: from mail.virtall.com ([46.4.129.203]:59684 "EHLO mail.virtall.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725995AbeLDGN5 (ORCPT ); Tue, 4 Dec 2018 01:13:57 -0500 Received: from mail.virtall.com (localhost [127.0.0.1]) by mail.virtall.com (Postfix) with ESMTP id 0084337B3856; Tue, 4 Dec 2018 06:13:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wpkg.org; s=default; t=1543904035; bh=D8f7pUMtG+SkvCzgE2d4PEi34fbNgAGal9CRGOjgb0k=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=HWeCVnNWI71GJxgJjX2dRNtbNB/c/IoCsx2EcwAOrB3ANdoFbfylooFwy8QOvxDyy b3m5IJCn5Y5/OWIGF8k1l8uvtMOeGmVSnmUnHTdxSWpy1zmXI3QHD3Y/CHdD/FRlni v8O5B0JGXjZpoBW/81cOa0h/Xu+1h7ti9KaKd1u2sYWWUPAePKxztb56lzbkobf5ev VqPP64CZubycn3bY7hrVisOfj9Ti3JECeV2HsrYRXqTYTWJLZHub1c481orz00umle jz1uzo6l4y77ioRsHRFsUFSLfBUn61UnYQsWR/FgrkfqQlGZsiExej/l9yyWTQ9YQf YA7yNLZgaHvZg== X-Fuglu-Suspect: 254033dad921455c8443ffe68480d585 X-Fuglu-Spamstatus: NO Received: from localhost (localhost [127.0.0.1]) (Authenticated sender: tch@virtall.com) by mail.virtall.com (Postfix) with ESMTPSA; Tue, 4 Dec 2018 06:13:53 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Tue, 04 Dec 2018 15:13:53 +0900 From: Tomasz Chmielewski To: Chris Murphy Cc: Btrfs BTRFS Subject: Re: experiences running btrfs on external USB disks? In-Reply-To: References: Message-ID: <0dcadfd3d9d1a36341d017ca4804e2b6@wpkg.org> X-Sender: mangoo@wpkg.org Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2018-12-04 14:59, Chris Murphy wrote: >> Running 4.19.6 right now, but was experiencing the issue also with >> 4.18 >> kernels. >> >> >> >> # btrfs device stats /data >> [/dev/sda1].write_io_errs 0 >> [/dev/sda1].read_io_errs 0 >> [/dev/sda1].flush_io_errs 0 >> [/dev/sda1].corruption_errs 0 >> [/dev/sda1].generation_errs 0 > > > Hard to say without a complete dmesg; but errno=-5 IO failure is > pretty much some kind of hardware problem in my experience. I haven't > seen it be a bug. It is a complete dmesg - in sense: # grep -i btrfs -A5 -B5 /var/log/syslog Dec 4 05:06:56 step snapd[747]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/skbuff_head_cache(1481:anacron.service)" Dec 4 05:06:56 step snapd[747]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/buffer_head(1481:anacron.service)" Dec 4 05:06:56 step snapd[747]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/ext4_inode_cache(1481:anacron.service)" Dec 4 05:15:01 step CRON[9352]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Dec 4 05:17:01 step CRON[9358]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Dec 4 05:23:13 step kernel: [77760.444607] BTRFS error (device sdb1): bad tree block start, want 378372096 have 0 Dec 4 05:23:13 step kernel: [77760.550933] BTRFS error (device sdb1): bad tree block start, want 378372096 have 0 Dec 4 05:23:13 step kernel: [77760.550972] BTRFS: error (device sdb1) in __btrfs_free_extent:6804: errno=-5 IO failure Dec 4 05:23:13 step kernel: [77760.550979] BTRFS info (device sdb1): forced readonly Dec 4 05:23:13 step kernel: [77760.551003] BTRFS: error (device sdb1) in btrfs_run_delayed_refs:2935: errno=-5 IO failure Dec 4 05:23:13 step kernel: [77760.553223] BTRFS error (device sdb1): pending csums is 4096 Dec 4 05:23:14 step postfix/pickup[8993]: 13BBE460F86: uid=0 from= Dec 4 05:23:14 step postfix/cleanup[9398]: 13BBE460F86: message-id=<20181204052314.13BBE460F86@step> Dec 4 05:23:14 step postfix/qmgr[2745]: 13BBE460F86: from=, size=404, nrcpt=1 (queue active) Dec 4 05:23:14 step postfix/pickup[8993]: 40A964603EC: uid=0 from= [...some emails follow, usual CRON messages etc., but noting at all generated by the kernel, no hardware issue reported...] Tomasz Chmielewski