Re: how to properly calculate max-leb-cnt and vol_size for ubifs

[twebb <taliaferro62@gmail.com>]

>>
>> I'm using ubifs for the first time and am confused about how to
>> calculate two parameters:
>>
>> "max-leb-cnt" for mkfs.ubifs
>> "vol_size" for ubinize cfg file
>>
>> How should "max-leb-cnt" be calculated?  In the examples, how is "-c
>> 2047" determined?  Should the max-leb-cnt calculation somehow include
>> the overhead calculated per the ubifs documentation page?  Should the
>> reserved PEBs (1% default for NAND flash) be somehow taken into
>> account?
>>
>> How should "vol_size" be calculated?  Is it simply max-leb-cnt *
>> LEB_size?  Should overhead somehow be included in this calculation
>> also?
>
> Have you read:
>
> http://linux-mtd.infradead.org/faq/ubifs.html#L_max_leb_cnt
>
> http://linux-mtd.infradead.org/faq/ubi.html#L_ubi_mkimg
>
> http://linux-mtd.infradead.org/doc/ubi.html#L_autoresize
>
>

I have, and I'm still pretty confused.  I just posted some additional
questions I'm hoping perhaps you or someone else may be able to help
with.

Thanks,
twebb