[linux-lvm] Available snapshot chunks known in LVM2

[Joe Thornber]

On Thu, Feb 13, 2003 at 08:47:07PM +0700, Jason Smith wrote:
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> Hi.
> 
> I am trying to implement a script that will automagically grow a snapshot 
> volume if it is getting too full, using 2.4.20-dm-7 and the latest stable 
> LVM2 and libdevmapper.
> 
> My problem is that the integer percent full value is not precise enough: on 
> for example a 100GB volume, those increments of course only tell me my 
> snapshot usage down to 1GB, and my ultimate goal is to put off reallocating 
> as long as possible, so I need to see this number down to, say, a 100MB 
> granularity.  Also, the current implementation rounds down, so 99.97% could 
> be interpreted as 1GB free in this example.  So I spent the last couple of 
> hours learning LVM code and implementing this change.

Impressive for a couple of hours work !  Send the patches and I'll see
if they should be merged in.

- Joe