On Monday 16 July 2001 00:05, Hans Reiser wrote:
> Daniel Phillips wrote:
> > On Sunday 15 July 2001 18:44, Hans Reiser wrote:
> > > The limits for reiserfs and ext2 for kernels 2.4.x are the same
> > > (and they are 2Tb not 1Tb). The limits are not in the individual
> > > filesystems. We need to have Linux go to 64 bit blocknumbers in
> > > 2.5.x, I am seeing a lot of customer demand for it. (Or we could
> > > use scalable integers, which would be better.)
> >
> > Or we could introduce the notion of logical blocksize for each
> > block minor so that we can measure blocks in the same units the
> > filesystem uses. This would give us 16 TB while being able to stay
> > with 32 bits everywhere outside the block drivers themselves.
> >
> > We are not that far away from being able to handle 8K blocks, so
> > that would bump it up to 32 TB.
> >
> > --
> > Daniel
>
> 16TB is not enough.
>
> I agree that blocknumbers are a significant space user in FS
> metadata, which is why I think scalable integers are correct.
I must have missed the place where you defined what scalable integers
are. I'd think the prefered way of representing a logical block size
is as a bit shift, not an absolute size, because it's far more
efficient to use that way. Is this the same as a scalable integer?
-- Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Jul 15 2001 - 21:00:23 EST