Re: [PATCH V2] UBI: power cut emulation for testing
From: Pavel Machek
Date: Sun Apr 05 2015 - 16:05:08 EST
On Sun 2015-04-05 21:49:27, Richard Weinberger wrote:
> On Sun, Apr 5, 2015 at 9:31 PM, Pavel Machek <pavel@xxxxxx> wrote:
> > On Thu 2015-03-26 23:59:50, david.oberhollenzer@xxxxxxxxxxxxx wrote:
> >> Emulate random power cuts by switching device to ro after a number of
> >> writes to allow simple power cut testing with nand-sim.
> >> Maximum and minimum number of successful writes before power cut and
> >> what kind of writes (EC header, VID header or none) to interrupt
> >> configurable via debugfs.
> >> Signed-off-by: David Oberhollenzer <david.oberhollenzer@xxxxxxxxxxxxx>
> >> ---
> >> V2: Remove broken check to prevent multiple triggering
> > Does NAND always finish write of full block during powerfail?
> Not sure if I correctly understand your question.
> Unless you don't have special hardware a write can be interrupted and
> can cause problems.
But this only emulates fail after a full block written, no?
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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