JFFS2 summary error!

JFFS2 summary error!

[Robert Liu]

Hi All,

I am using Linux-2.6.10 with the lastest CVS MTD codes.
My device is a Intel IXP E.V. board, configured as a big-endian machine,
with 8M NOR flash and 32M NAND flash.

I can mount a JFFS2 partition correctly without enabling the JFFS2 
summary support.
But, I usually got warning messages, when turn on the JFFS2 summary support.
(I don't know this problem occurs unders what condition)
The following steps are used to test:
  1. flash_eraseall /dev/mtdblock/3
  2. mount -t jffs2 /dev/mtdblock/3 /mnt
  3. do some operations (mkdir, touch, dd, ...)
  4. umount /mnt
  5. mount -t jffs2 /dev/mtdblock/3 /mnt
then the warning (error!?) meesage showed:
  JFFS2 warning: (86) jffs2_sum_process_sum_data: Unsupported node type 
found in summary! Exiting...
  mount: Mounting /dev/mtdblock/3 on /mnt failed: Input/output error

I added some debug code and found the warrnig always occured with 
nodetype 02E0.
This looks like a endian problem.
Would someone help me to debug?

Regards,
Robert

Re: JFFS2 summary error!

[Zoltan Sogor]

Hi Robert!

We have developed the summary support but we haven't found this kind of 
error before.
Please send me the kernel log with JFFS2 debug level 1 and the dump of 
the wrong fs image.
I will try to reproduce/fix the problem.

Thanks:
    Zoltan

Robert Liu wrote:

> Hi All,
>
> I am using Linux-2.6.10 with the lastest CVS MTD codes.
> My device is a Intel IXP E.V. board, configured as a big-endian machine,
> with 8M NOR flash and 32M NAND flash.
>
> I can mount a JFFS2 partition correctly without enabling the JFFS2 
> summary support.
> But, I usually got warning messages, when turn on the JFFS2 summary 
> support.
> (I don't know this problem occurs unders what condition)
> The following steps are used to test:
>  1. flash_eraseall /dev/mtdblock/3
>  2. mount -t jffs2 /dev/mtdblock/3 /mnt
>  3. do some operations (mkdir, touch, dd, ...)
>  4. umount /mnt
>  5. mount -t jffs2 /dev/mtdblock/3 /mnt
> then the warning (error!?) meesage showed:
>  JFFS2 warning: (86) jffs2_sum_process_sum_data: Unsupported node type 
> found in summary! Exiting...
>  mount: Mounting /dev/mtdblock/3 on /mnt failed: Input/output error
>
> I added some debug code and found the warrnig always occured with 
> nodetype 02E0.
> This looks like a endian problem.
> Would someone help me to debug?
>
> Regards,
> Robert
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/

Re: JFFS2 summary error!

[Robert Liu]

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Hi Zoltan,

The attachment is the kernel log (recorded by busybox syslogd).
But, I don't know how to dump the fs image.

Would you tell me how to do that?

Thanks,
Robert


Zoltan Sogor wrote:

> Hi Robert!
>
> We have developed the summary support but we haven't found this kind 
> of error before.
> Please send me the kernel log with JFFS2 debug level 1 and the dump of 
> the wrong fs image.
> I will try to reproduce/fix the problem.
>
> Thanks:
>    Zoltan


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