David Zeuthen (davidz@redhat.com) said:
Nope, I think it's much more elegant to just use dm-snapshot to provide a real rw rootfs. Not sure what Bill Nottingham (Cc'ed) or people working on stateless team thinks of this, they might have a number of good reasons that I haven't thought out. I still think stateless makes sense for non-livecd work however.
The reason we didn't use dm-snapshot is that it removes the security benefits of readonly-root (after all, you don't need 99% of the system to actually be read-write); moreover, you can't selectively apply it (it has to be done at the whole block device level.)
Btw, If someone could talk davej into including unionfs into the Fedora kernel, we'd use that instead of dm-snapshot and we'd have persistence more easily solved [1].
Flaming death. Deadlocks, oopses, etc. (it might be better now)
Bill