----- "Jeremy Katz" <katzj(a)redhat.com> wrote:
Not usefully -- you can string together some 'dm table'
get the number of blocks used but it requires being root and also had
My kingdom for an upstreamable unionfs :/
We use "aufs" to union a COW filesystem for our custom "Live" system.
It does seem a little odd that many of the other distros now use a union filesystem
approach to LiveCDs and NFS read-only roots but Fedora has for the time being stayed away
from it. It's not like there isn't lots of custom stuff being put into
fedora/redhat kernels that isn't yet upstream. In fact there was a discussion about
getting UnionFS upstream recently on the kernel list....
Saying all this the dm-snapshot approach will be more efficient space wise as it works
with blocks instead of whole files.