Re: is there a COW inside the kernel ?

[Alasdair G Kergon]

On Fri, Mar 03, 2006 at 09:29:02AM +0100, roland wrote:
> is there an equivalent of something like
> cowloop ( http://www.atconsultancy.nl/cowloop/total.html ) or md based cow 
> device ( http://www.cl.cam.ac.uk/users/br260/doc/report.pdf ),
> i.e. a feature called "Copy On Write Blockdevice" inside the current or the 
> near-future mainline kernel (besides UserModeLinux Arch)?
 
device-mapper snapshots?

  Documentation/device-mapper/snapshot.txt

Alasdair
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