[dm-devel] Re: [RFC PATCH] dm-csum: A new device mapper target that checks data integrity

[Alberto Bertogli]

On Thu, May 21, 2009 at 02:17:58PM -0400, Greg Freemyer wrote:
> On Thu, May 21, 2009 at 12:13 PM, Alberto Bertogli
> <albertito at blitiri.com.ar> wrote:
> > I'm writing this device mapper target that stores checksums on writes and
> > verifies them on reads.
> 
> I have not looked at your patch, but does this tie into the integrity
> logic that was added to mainline a few months ago?

At the moment it has no relation, but making dm-csum devices register with the
bio integrity extensions is on my to-do list, and the on-disk format already
reserves 32 bits for every 512-byte sector for tagging purposes.

Thanks,
		Alberto