My system #uname -a FreeBSD bxzxfreebsd.slof.com 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #4: Mon Oct 6 15:02:42 CST 2008 root at bxzxfreebsd.slof.com:/usr/obj/usr/src/sys/lhmwzy amd64 zfs version: ZFS filesystem version 6 ZFS storage pool version 6