Confuse with WL_THRESHOLD

Artem Bityutskiy dedekind at
Sun Jun 7 06:23:00 EDT 2009

On Sat, 2009-06-06 at 07:03 +0700, Thang Dao Duy wrote:
> Hi everyone.
> I used NANDsim and ubifs not for along time. Now, I have confused with
> wear-leveling threshold. If i give parameter WL_THRESHOLD in Kernel is
> small (example, the value is  3), then when i write a file size 2 MiB
> to NAND about 200 times, it makes me cannot read EC and VID headers of
> one PEB (example PEB 10). May be that PEB is bad ? And when i set the
> WL_THRESHOLD is higher (the value is 20), i write a file 2MiB about
> 1000 times, nothing 's happen, i can read headers of any PEB. So can
> you tell me what make this happen, and show me where in ubi source in
> kernel.

Looks like a bug. Please, describe precisely how to reproduce it,
and I'll take a look at this.

Best regards,
Artem Bityutskiy (Битюцкий Артём)

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