On Thursday 19 July 2007, Anthony Liguori wrote:
> > Interestingly, once you have the kernel driver that maps a block device,
> > you can do most of the useful user scenarios by means of /dev/loop
> > and/or device mapper.
>
> Not quite. Using device mapper to implement something like qcow turns
> out to be pretty painful.
Right. Note that I said 'most scenarios', not all ;-)
I don't understand enough about qcow to see why you can't do the same
with simple dm snapshots, but I'm sure there is a reason to have it.
Arnd <><
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