UBIFS corruption and UBI + unstable bit questions

Richard Weinberger richard at nod.at
Fri Mar 27 08:50:19 PDT 2015


Am 27.03.2015 um 14:30 schrieb Morand, Guy:
> Hi,
> 
> Thanks for clarifying!
> 
>> But it depends on the type of the corruption.
> What do you mean by "type of the corruption". Is it about a PEB containing the 
> volume table corrupting every volumes on the MTD device? I can't imagine a PEB
> containing "regular data" corrupting the whole MTD device or correct me if I'm 
> wrong! I guess this should be extremely rare as we don't update the volume table 
> every day ...

We save the volume table twice. But you can't expect that UBI or UBIFS will
survive perfectly fine if random PEBs tun out of the sudden bad.

>> Okay. That's what I thought. I've never seen the issue on serious hardware.
> Serious hardware, does that mean with seriously select components?

Yes.

Thanks,
//richard



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