[dm-devel] block mapping

[Zdenek Kabelac]

Dne 29.9.2011 15:35, Kasatkin, Dmitry napsal(a):
> Hello All,
> 
> I would like to implement such block device, which can store
> additional information along with the block data.
> For example. so if file system has 4k block, I would like to store
> 4k+256b of additional information...
> 
> Can such block device be implemented with device mapper?
> 

Yes - i.e.the old snapshot target stores the block and it's remapping info
(thought the size info is much smaller then 256b)

Zdenek