Re: ReiserFS on large-scale flash

[Hans Reiser <reiser@namesys.com>]

Artem B. Bityuckiy wrote:

> Hello,
>
> I'm designing new flash file system. And I'm thinking about the
> possibility to write plugins for ReiserFS to implement it (I know, it
> sounds crazy). I didn't thoroughly explore is it possible or not yet.
>
> I'm almost certain that it is impossible to do this with the current
> Reiser4 and more changes are needed. Flash devices just has another
> model, not the same as block devices. In a nutshell, you can't write
> twice to the same block (out-of-place writing property) and you must
> erase a several consecutive blocks before re-using any block (read
> here: http://en.wikipedia.org/wiki/Flash_memory).
>
> Currently there are no Flash file systems which are usable on large
> scale flashes, at least in Linux. And there is a real need in such FS.
>
> So, I'd like to know, are Reisre4 developers interested in this? Will
> I have some assistance from them if I find some Reiser4 limitation? Is
> it worth starting exploring Reiser4 or better just start new FS?
>
> Thanks.
>
Sure, go for it.