Use xattr to store the filesystem initialization state of the overlay.
As long as the filesystem is not marked as initialized yet (happens in
/etc/init.d/done), all overlay data (except for sysupgrade.tgz) will be
discarded before the system is allowed to boot
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 44942
889e1e4bff