From: Adrian Hunter <ext-adrian.hunter@nokia.com>
To: ext David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: JFFS2 wrong data CRC message
Date: Wed, 02 May 2007 16:02:49 +0300 [thread overview]
Message-ID: <46388BF9.4060807@nokia.com> (raw)
In-Reply-To: <1178108604.2875.182.camel@pmac.infradead.org>
ext David Woodhouse wrote:
> On Wed, 2007-05-02 at 12:19 +0300, Adrian Hunter wrote:
>> Can someone explain why this message is not an error?
>>
>> JFFS2 notice: (17573) read_dnode: wrong data CRC in data node at
>> 0x07e85800: read 0x86c6656c, calculated 0xaf4f2bc5.
>
> Because it's almost certainly harmless. It usually just means that you
> rebooted or reset without cleanly unmounting -- and thus without the
> writebuffer getting flushed to finish the node it was writing at the
> time. So the data CRC fails, and the node is ignored.
>
Unfortunately I started with an empty flash and have not rebooted at all.
I've been running stress tests constantly for about a week, and this is
the only JFFS2 message. The tests do unmount and remount, but there are
no error messages.
So unless you can offer an alternative explanation I am going to have to
assume it is an error.
next prev parent reply other threads:[~2007-05-02 13:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-02 9:19 JFFS2 wrong data CRC message Adrian Hunter
2007-05-02 12:23 ` David Woodhouse
2007-05-02 13:02 ` Adrian Hunter [this message]
2007-05-02 13:06 ` David Woodhouse
2007-05-02 13:51 ` Jörn Engel
2007-05-02 14:00 ` David Woodhouse
2007-05-03 7:20 ` Adrian Hunter
2007-05-02 13:19 ` Vitaly Wool
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