On Friday 15 January 2010 02:25:38 yang wrote:
> I had port yaffs to my embed board(with a 512M nand flash and ucos system )
> for a few months. It work well mostly. But for a few times, I lost all
> files in yaffs2 after a reboot, nothing left event in lost and found. It
> seem to be a totally new disk partation.
>     This problem didn't happend frequently, and I can't find a method to
> debug or hunt it down.
>     Any one konw what would case this happend? And ,what can I do to trace
> this problem? Any suggest whould be appreciate!

I've never see that happen.

When this happens have a look at the dmesg.
Turn on all tracing and try again.
What does a nand dump look like? Perhaps the flash was erased or overwritten?

-- Charles