Re: ext4 features

Claudio Martins
2006-07-01T18:09:32Z

On Saturday 01 July 2006 18:47, Thomas Glanzmann wrote:
> Hello,
>
> > Checksums are not very useful for themselves. They are useful when we
> > have other copy of data (think raid mirroring) so data can be
> > reconstructed from working copy.
>
> it would be possible to identify data corruption.
>
> > What's wrong with DM snapshots?
>
> they're inefficient in matter of disk space consumption because they
> don't have a clue of the filesystems that are on top of them.
>

May I recommend that you have a look at NILFS?

http://nilfs.org/en/

The design is built from the ground up to support an almost arbitrary number
of snapshots, and also has other advantages. And it works already.

Regards

Cláudio