On Wed, 17 Jan 2001, J.H.M. Dassen (Ray) wrote:
> > So what is needed it to be able to mount a .zip or a .tar file as a file
> > system with the loopback device.
>
> For Linux, there used to be a "userfs" that allowed this kind of thing.
> AFAIK development stopped quite some time ago, as there were numerous
> problems with deadlocks.
I am working (since a long time now), on a migration filesystem where you
can extend a filesystem with data on tapes, NFS, etc, using a stacking
filesystem (FIST). Migration can be scheduled or automatic, when the fs
is full. It only migrates/unmigrates complete files.
http://www-internal.alphanet.ch/~schaefer/mfs.html
It's a bit your poor man's HSM. It is supposed it will be one day merged
with filed (http://www-internal.alphanet.ch/~schaefer/filed.html).
That's Linux-only, however, and still very gamma.
