Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Wed, 16 Jun 1999 14:12:28 +0100 (BST) | Subject | Re: file size limit |
| |
Hi,
On Sun, 6 Jun 1999 10:24:49 +0200 (MEST), R.E.Wolff@BitWizard.nl (Rogier Wolff) said:
> Hold it, If I remember correctly, block numbers are still 32bits. So > you're limited to filesystems of 4T, 8T, 16T and 32T anyway.
Yes.
> If we move to extents, we can start to do nifty stuff: there is a > 32bit start block number, and a 32bit length field in an extent. That > length field is WAY over dimensioned. You can grab a few bits there > for "move to another meta-group". Meta-group being a group of 4G > blocks.
The plan is to use 64 bits for both keys and locations in the extent map. The extra bits in the location will let us span over multiple devices if we want to.
--Stephen
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |