FSSNAP_KSTAT_NUM
ksnum = kstat_lookup(kslib, SNAP_NAME, snapnum, FSSNAP_KSTAT_NUM);
num = kstat_lookup(kslib, SNAP_NAME, snapnum, FSSNAP_KSTAT_NUM);
kstat_delete_byname(snapname, snapnum, FSSNAP_KSTAT_NUM);
num = kstat_create(snapname, snapnum, FSSNAP_KSTAT_NUM,