[dm-devel] How to force a snapshot status to valid when I know very well it's valid?

[Alasdair G Kergon]

On Fri, Dec 21, 2012 at 11:35:31PM +0000, Greg Stark wrote:
> I have another question while I'm here and people are being so
> helpful. Is there a way to grow the size of the actual snapshot
> device? Not the cow table but the device that the snapshot is
> presenting? If I change the size of the underlying device I don't
> think it changes the size of the snapshot and if I extend the snapshot
> it just changes the size of the cow table. It seems like it should be
> possible to add another dm mapping for the added space using a simple
> linear mapping.
 
We discused this sort of thing but never implemented it.

Perhaps we will offer more resizing options with the new thin snapshots.

Alasdair