Re: [9fans] disk/^(mbr format fdisk prep)

["Joel Salomon" <salomo3@cooper.edu>]

Charles Forsyth said:
>>>How would one go about adding a "user mode wear-leveller" atop kfs, for
>>>example? general outline is okay.
>
> i'm not sure it is.  it needs to take account of physical not logical
> location, because it's the wear on the physical location that matters,
> and perhaps the topology--
<snip>
> that's why the usual approach to providing a `raw disk' on top of flash
> sits below the file system, not above it.  it's still not as efficient as
> a storage system
> designed for flash.
>

got it -  i understood
> if you want to wear-level it stick a user mode wear-leveller on top of it.
> isn't that what plan 9 does really well?
to mean a wear leveler on top of the file system & was at loss to see how
that might be done (probably because it can't)

Then what would the leveler look like, boyd? I'm guessing some file whose
offsets point to different parts of the flash, depending on use, which
can't easily be done under anything but p9. is that it?

--Joel