[linux-lvm] What have snapshots got to do with LVM ?

[Heinz J. Mauelshagen]

On Sun, Apr 22, 2001 at 01:09:24PM +0100, Joe Thornber wrote:
> Just a random Sunday morning thought:
> 
> Why don't we split snapshots off into their own driver so we can
> snapshot any block device, putting the COW tables on any other block
> device ?  

Any other block device devides into PE similar allocation units carrying their
own COW exception table at the beginning?

> 
> We would need to add a per device hook like 'make_request' to the kernel
> (rather than per driver).
> 
> I think it would simplify both LVM and the snapshot code (which at the
> moment knows too much about physical extents etc.).

It would beed to know something similar along the line I pointed to above
anyway.

> 
> 
> - Joe
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-- 

Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen at Sistina.com                           +49 2626 141200
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