lkml.org 
[lkml]   [1999]   [Jun]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: 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/

\
 
 \ /
  Last update: 2005-03-22 13:52    [W:0.050 / U:1.900 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site