Re: [Yaffs] the problem about small data storage

On Saturday 13 October 2012 23:17:56 姚乾 wrote:
> Hi everyone,
> I’m doing a research recently about water conservancy informatization.
> The monitoring terminal is using ‘linux + yaffs’ system. Since the
> rainfall information collected each time is only 20 bytes, yaffs file
> system usually applies the ‘out of place’ strategy. I don’t think this
> is quite an efficient way. So how about adding ‘partial page
> programming’ into yaffs which directly stores new data following the
> original without assigning new chunk while small data file is being
> written.
> I’m wondering if partial page programming can meet the accuracy and
> reliability of data storage? Or better solutions to deal with small
> data storage would be a great help. I’m open to any kind of
> suggestion.

Yaffs does not use partial page programming because many/most flash devices do
not support partial page programming.

Yaffs will write a new page for each write, then the old page is released for
erasure and reuse.

-- Charles