UBI bitrot checking and scrubbing

[Stelling Carsten]

Hi,

I found Richard’s patches http://lists.infradead.org/pipermail/linux-mtd/2015-April/058677.html or
http://lists.infradead.org/pipermail/linux-mtd/2015-November/063122.html, but can't identify any
of the code in newer kernel versions (e.g. 4.9 or 4.11).
I wonder, if ubihealthd http://lists.infradead.org/pipermail/linux-mtd/2015-November/063128.html
was never released with mtd-utils (actually 1.5.2). Possibly, I have missed some information on
this topic.
Is there actually a comparable mechanism in UBI, I haven’t found yet?
Like wear levelling, reading and scrubbing (if necessary) *all* PEB’s from time to time is an
essential task to ensure durability of information. Especially, for PEB’s which are not accessed
frequently. With Fastmap enabled, one can't rely on cyclic reboots, because not all UBI
VID/EC headers are read at boot time.
Regarding bitrot checking, a lot of effort was made by several contributors, but I can't find
their work in mainline kernel driver code. Have I overlooked something?
Any hints or suggestions are greatly appreciated.

Thank you very much.

Regards,
Carsten

______________________________________
 Carsten Stelling
F&E Hardware / R&D Hardware

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