Re: ext4 features

Helge Hafting
2006-07-03T20:26:27Z

On Sat, Jul 01, 2006 at 08:17:02PM +0200, Tomasz Torcz wrote:
> On Sat, Jul 01, 2006 at 07:47:16PM +0200, 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.
> >
>
> Yes, but what good is identification? We could only return I/O error.
> Ability to fix corruption (like ZFS) is the real killer.

Isn't that what we have RAID-1/5/6 for?

Helge Hafting