Re: [Yaffs] failed erases causing block retirement

On Friday 29 May 2009 10:23:35 Ben Gamsa wrote:
> Charles Manning wrote:
> > It is safe to retry erases from a yaffs perspective, but if blocks are
> > really failing erases (ie. not just a driver issue) I would be a bit
> > concerned as to their health and would not want to reuse those blocks.
>
> Right, that was my concern too. I guess what I wasn't sure of is
> whether an erase failure is almost always (barring driver issues) an
> indication of a bad block, or whether, like writes, it can be a
> temporary glitch for which retries make sense. Since in my case it
> turned out to be a driver issue, I still don't know the answer to this
> question, but it is now less pressing.

It very much depends on flash technology, but if you're getting write and
erase errors I'd say you're typically playing with fire to keep using them.

-- CHarles