find_subdisk
namedsdno = find_subdisk(token[++parameter], 0); /* find an existing sd with this name */
sdno = find_subdisk(token[++parameter], 1); /* find a subdisk */
int find_subdisk(const char *name, int create);
if (find_subdisk(msg->newname, 0) >= 0) { /* we have that name already, */