From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([222.73.24.84]:34357 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750878Ab3K2FvX (ORCPT ); Fri, 29 Nov 2013 00:51:23 -0500 Message-ID: <52982B4C.2070507@cn.fujitsu.com> Date: Fri, 29 Nov 2013 13:51:08 +0800 From: Wang Shilong MIME-Version: 1.0 To: Sebastian Ochmann CC: linux-btrfs@vger.kernel.org Subject: Re: 2 errors when scrubbing - but I don't know what they mean References: <5297A950.3020100@informatik.uni-bonn.de> In-Reply-To: <5297A950.3020100@informatik.uni-bonn.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, On 11/29/2013 04:36 AM, Sebastian Ochmann wrote: > Hello everyone, > > when I scrubbed one of my btrfs volumes today, the result of the scrub > was: > > total bytes scrubbed: 1.27TB with 2 errors > error details: super=2 > corrected errors: 0, uncorrectable errors: 0, unverified errors: 0 Here super error means superblock checksum mismatch,scrub just report superblock errors but dosen't try to fix it.... Maybe this is just a read error, anyway, superblocks will be rewritten after commiting a transaction.. Thanks, Wang > > and dmesg said: > > btrfs: bdev /dev/mapper/tray errs: wr 0, rd 0, flush 0, corrupt 0, gen 1 > btrfs: bdev /dev/mapper/tray errs: wr 0, rd 0, flush 0, corrupt 0, gen 2 > > Can someone please enlighten me what these errors mean (especially the > "super" and "gen" values)? As an additional info: The drive is > sometimes used in a machine with kernel 3.11.6 and sometimes with > 3.12.0, could this swapping explain the problem somehow? > > Best regards > Sebastian > -- > 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 >