Re: [Ext2-devel] [RFC 0/13] extents and 48bit ext3

Olivier Galibert
2006-06-10T00:07:38Z

On Fri, Jun 09, 2006 at 12:55:09PM -0400, Jeff Garzik wrote:
> Alex Tomas wrote:
> >so, instead of taking one (quite-well-tested) part that solves one of
> >the biggest ext3 limitation, you propose to start a new project and
> >get something in a year (probably) ?
> >
> >I think about extents as a step-by-step way ...
>
> That is what the entirety of Linux development is -- step-by-step.
>
> It is OBVIOUS that it would take five minutes to start ext4.
>
> 1) clone a new tree
> 2) cp -a fs/ext3 fs/ext4
> 3) apply extent and 48bit patches
> 4) apply related e2fsprogs patches

5) force all options (attributes, etc) on and remove the flags
indicating their existence from the metadata, you'll need the space
for the fs evolution.

6) change the fs just enough so that an ext4 fs can never be mounted
as ext3 or 2.

OG.