On Thursday 05 May 2011 23:03:17 Boaz Ben-David wrote:
> Hi all,
>
> I am using Yaffs on MLC NAND with several partitions, two of them are
> 65MB and about 1.6GB in size.
> For some reason, the smaller one has a lot of bad blocks created on it
> under use when the same usage
> on the larger (1.6GB) partition does not generate such results.
> I haven't been able to determine the cause for this and I am using the
> default YAFFS2 configuration in the kernel,
> nothing too fancy.
> I've written to the mailing list before about this bad blocks creation
> issue but back then I didn't know this is not
> happening on bigger partitions, and since I wasn't able to find the
> cause for this I thought I should try again.
> BTW, I've already run all the built-in mtd tests on the device but no
> errors were found.
>
> Can anyone suggest a lead on this?
>

Do you see this on more than one device? If not, then perhaps there are just 
more problems in the 65M area than the rest.

Are the usage patterns the same?

It is also worth considering that a fixed amount of write traffic will impact 
the 65MB partition far more than the larger partition.