Re: enlarging snapshot volume automatically?

On Tue, Apr 29, 2003 at 05:31:43PM +0900, Kwon SoonSon wrote:
> Hi, I am thinking of a possible way to enlarge the
> snapshot automatically when there is no space for
> copy-on-write operation.
> 
> I thought when the kernel fails to allocate more
> space, following the same way when the user 
> enlarges that snapshot volume manually.
> 
> But I am not sure if this is possible because the
> low device-mapper level only cares for the target
> type and mapping information. (as far as I know.)
> 
> If there is a good idea on how to automatically
> allocate more space whenever needed, please
> let me know. (Or if there is any restriction on doing
> this, let me know also. :-))
> 
> If LVM can allocate more space to snapshot
> without the user's manual operation, that would be
> a very nice improvement.

Write a sh script that checks how much free space there is every 5
minutes and extends if neccessary ?

- Joe