#1 Sync back to disk?

[Lee Dowling]

Is it possible to (or could it be added) so that there is a
command that applies a cowfile changes to the original
block device?

In this way, you could spawn several cow instances on
a r-o device, perform several different actions and when
you have the one that works correctly, you could apply it
back to the r-o device (once you had mounted it r-w of
course) so that the changes you made inside the cowfile
would be written back to the original filesystem.

This could be useful for all sorts of testing and
development purposes, e.g. for those testing
filesystems.

It could also be used on LiveCD's etc. so that someone
could use the LiveCD, make a change to it (e.g. upgrade
a piece of software, tweak a setting) and then just
submit the cowfile. The developers could then have the
changes be "patched" directly into the original LiveCD
filesystem.