[Fedora-livecd-list] RFC- unionfs persistence?

[Thorsten von Eicken]

Douglas McClendon wrote:
 > Never being one to avoid conversing with myself...

Please keep conversing with yourself! Happy to listen! :-)
It would be very helpful if you could summarize the pros and cons of 
each of the two approaches. This way more of us could chime in and stir 
in the pot.

 From the limited knowledge that I have:
- unionfs write a regular directory/file structure to the rw device, one 
can easily inspect and manipulate what got written, even on a different 
machine.
- unionfs makes it easy to fold the rw content back into the ro 
filesystem, it's just a cp -a onto the "master" filesystem
- with unionfs one can layer, so one can add additional rw layers on top 
and thereby preserve a rw snapshot
- devicemapper has clean semantics, with unionfs the deletion of a file 
in the ro filesystem is represented using basically a hack in the overlay

I'm sure there's more...
Thorsten