[Unionfs] Volume full -> Filesystem full

[Josef Sipek]

On Wed, Aug 15, 2007 at 08:58:11AM +0200, Sascha Hesse wrote:
> Hallo All,
> 
> I created a union mountpoint on my machine with two rw directories
> underlying. When I copy files to this union mountpoint, the first volume is
> filled because of higher priority. After some time, the first Volume gets
> full - I expected that from then on the second volume will be filled. But
> this doesn't happen.
> 
> Has anyone one any hints for me?

Unionfs merges namespace NOT disk space. What you want done can be
acomplished with LVM/Device Mapper or perhaps some other stackable
filesystem.

A long while back there were patches floating around to make unionfs merge
space as well, but those were for the (now ancient) 1.x code base.

Jeff.

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