Re: Understanding jffs2 warning message

[Jean-Philippe Francois <jp.francois@cynove.com>]

On Wed, 2005-07-20 at 09:30, Jean-Philippe Francois wrote:
> On Tue, 2005-07-19 at 14:35, Jean-Philippe Francois wrote:
> > Hi,
> > 
> > I am doing some test on a JFFS2 file system.
> > It is installed on a Macronix Flash 29LV320, with top boot block.
> > The part are cfi probed, and it works (almost) fine.
> > 
> > I am doing some tar/untar loop [1]. Every six or seven loop, I have a
> > serie of 8 warning messages :
> > 
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001040)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001044)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001044)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001044)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001044)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001044)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00001044)
> > Node totlen on flash (0xffffffff) != totlen in node ref (0x00000768)
> > 
> > I looked at the code, but I don't understand what is the meaning of
> > these messages.
> > Do you think it can be related to the Top Boot Block layout of this
> > flash (ie last 64 k sector is replaced by 8 8k sector) ?
> > I might be wrong, but I think the sector layout and erase size is taken
> > into account by CFI probing ?
> 
> Looking into the archive, I think I am in the case described by [1].
> The driver know about the various erase regions, but doesn't transmit
> this info to partition level. What is the status of the patch in [1] ?
> It is not part of the mtd code in 2.6.12 kernel.
> 
> Regards,
> 
> JP Francois
> 
> [1]
> http://lists.infradead.org/pipermail/linux-mtd/2004-December/011320.html
> 
> 
I tested this patch, and it solved my problem, in case anyone is
interested.

JP François