Re: File System conversion -- ideas

viro
2003-06-30T16:15:32Z

On Mon, Jun 30, 2003 at 01:36:41PM +0400, Hans Reiser wrote:
> I tend to agree with the below. I just want to add though that there
> are a lot of users who have one disk drive and and no decent network
> connection to somewhere with a lot of storage. It would be nice to
> adapt tar to understand about the reiser4 resizer and mkreiser4 and the
> reiser3 resizer, and the partitioner (yah, at this point it would no
> longer really be tar, but.... ), and to have it shrink the V3 partition,
> create a reiser4 partition, copy some of the V3 partition to the V4
> partition, shrink the V3 partition some more, etc.....
>
> Money will get us to do this. Otherwise we will work on what we are
> contracted to do for DARPA.

*Ugh*. If one really wants reiserfs v3 -> v4 conversion, presumably
there are much more intelligent ways to do that. For one thing,
you really don't want to create an empty tree and move the stuff
from original node-by-node - that would give a shitload of IO on
tree rebalancing alone, not to mention the PITA it will be for allocator
(you get to reshuffle trees a lot on potentially almost full fs).