UBIFS partition on NOR flash not mountable after power cut test

[Mark Mason]

Artem Bityutskiy <dedekind1 at gmail.com> wrote:

> On Mon, 2010-11-29 at 15:33 -0500, Mark Mason wrote:
> > I have seen something similar in the last few months with Samsung
> > K9WAG08U1B-PIB0 chips on a PowerPC 8260.  Sadly I can't be much help
> > since I no longer have access to the hardware and don't have detailed
> > notes anymore, but I did experience UBI/UBIFS corruption that
> > prevented mounting after power cycle tests.  The frequency was
> > approximately what you quote, and there was a high volume of writes to
> > NAND.
> > 
> > Reformatting the NAND was not a big problem for us, so we went with a
> > workaround and never had a chance to track down the actual problem
> > before the product shipped.
> > 
> > Wish I could be more help.
> 
> Well, you could have reported it, I usually try to provide at least
> some help...

Yes, I could have, and I should have, and I intended to, etc.
Unfortunately "market conditions prevailed", the product shipped, and
I wasn't needed anymore.

Plus, I meant to say 8315, not 8260.  Maybe the two bus controllers
are too similar, or maybe I've just inhaled too much flux.