[PVFS2-developers] metadata record pre-allocation

[Rob Ross]

On Tue, 27 Jul 2004 neillm at mcs.anl.gov wrote:

> On Mon, Jul 26, 2004 at 07:35:49PM -0500, Rob Ross wrote:
> > Do you think it's necessary to export a function to deal with 
> > preallocation?  To some extent, trove knows as well as anyone whether or 
> > not the storage system is busy; perhaps it would be better to simply have 
> > trove kick off preallocation operations when its queue is empty and it is 
> > below some low-water mark?  It already has a thread most of the time 
> > anyway, right :)?
> 
> While other backends will probably have pre-allocation of some sort,
> I'm not sure what their interface would look like.  Using the
> StorageHint space should allow full flexibility without having to work
> around anything.  I think this should stay dbpf specific too because
> trove isn't threaded -- just the dbpf implementation of.

My bad; I wasn't being specific enough.  I agree that this should be in 
the dbpf implementation.

Rob