186d7f5d3SJohn Marino# $FreeBSD: src/sys/ufs/ffs/README.softupdates,v 1.7.2.1 2000/06/26 14:09:01 sheldonh Exp $ 286d7f5d3SJohn Marino# $DragonFly: src/sys/vfs/ufs/README.softupdates,v 1.3 2004/07/18 19:43:48 drhodus Exp $ 386d7f5d3SJohn Marino 486d7f5d3SJohn MarinoAdd option SOFTUPDATES to your kernel configuration. You should also 586d7f5d3SJohn Marinoread the copyrights in the sources and the README file. 686d7f5d3SJohn Marino 786d7f5d3SJohn MarinoOnce you're running a kernel with soft update support, you need to enable 886d7f5d3SJohn Marinoit for whichever filesystems you wish to run with the soft update policy. 986d7f5d3SJohn MarinoThis is done with the -n option to tunefs(8) on the UNMOUNTED filesystems, 1086d7f5d3SJohn Marinoe.g. from single-user mode you'd do something like: 1186d7f5d3SJohn Marino 1286d7f5d3SJohn Marino tunefs -n enable /usr 1386d7f5d3SJohn Marino 1486d7f5d3SJohn MarinoTo permanently enable soft updates on the /usr filesystem (or at least 1586d7f5d3SJohn Marinountil a corresponding ``tunefs -n disable'' is done). 1686d7f5d3SJohn Marino 1786d7f5d3SJohn MarinoFor more general information on soft updates, please see: 1886d7f5d3SJohn Marino http://www.ece.cmu.edu/~ganger/papers/CSE-TR-254-95/ 1986d7f5d3SJohn Marino 2086d7f5d3SJohn Marino-- 2186d7f5d3SJohn MarinoJulian Elischer <julian@freebsd.org> 22