From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
To: Sebastian Ochmann <ochmann@informatik.uni-bonn.de>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: 2 errors when scrubbing - but I don't know what they mean
Date: Fri, 29 Nov 2013 13:51:08 +0800 [thread overview]
Message-ID: <52982B4C.2070507@cn.fujitsu.com> (raw)
In-Reply-To: <5297A950.3020100@informatik.uni-bonn.de>
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
> --
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>
prev parent reply other threads:[~2013-11-29 5:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-28 20:36 2 errors when scrubbing - but I don't know what they mean Sebastian Ochmann
2013-11-29 1:10 ` Duncan
2013-11-30 11:31 ` Sebastian Ochmann
[not found] ` <CAP9B-Q=Y+uY2kErYb1ZKMsvFrbYidmGpPnUbHm8iApj7v6wK+w@mail.gmail.com>
2013-12-01 1:16 ` Fwd: " Shilong Wang
2013-12-01 20:45 ` Sebastian Ochmann
2013-12-02 1:30 ` Wang Shilong
2013-12-02 1:53 ` Wang Shilong
2013-12-02 9:21 ` Wang Shilong
2013-11-29 5:51 ` Wang Shilong [this message]
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