Re: [Drbd-dev] New Features: write-back cache mode

[Lars Ellenberg <lars.ellenberg@linbit.com>]

On Sun, Sep 21, 2008 at 01:19:38AM +0200, Lars Ellenberg wrote:
> On Sat, Sep 20, 2008 at 05:04:44PM -0600, Morey Roof wrote:
> > This is pretty much what I was thinking.  For the btree, generations,  
> > and ref-count a good example to look at is how btrfs (This is the other  
> > project I have started to mess with) works.  The design is very  
> > efficient and I think we could use a very close match for our setup.  I  
> > haven't read the paper you sent yet but will get to that today.
> >
> > Let me know how you would like to start and I can start working a proof  
> > of concept and we can see how to go from there.
> 
> I still think that should be implemented as a
> generic device-mapper write-back target,
> not as part of drbd.

> http://www.acis.ufl.edu/~ming/dmcache/

> maybe you can use that as a starting point,
> and point it to a ram disk as cache?

any news on that?

	Lars