On 2009-05-19 22:10, Dmitry Morozovsky wrote: > Just to be sure: is the patch based on sys/ hierarchy, and does not touch > others (like sbin/)? No, it touches stuff in cddl/ too, so you need to build the world. Be sure to use -E with patch, to cleanup emptied files. E.g.: patch -d /usr/src -p1 -f -F0 -E -i /path/to/zfs-mfc.patch