NVL_MPXPATH
rv = nvlist_lookup_string(devnvl, NVL_MPXPATH, &path);
(void) nvlist_add_string(devnvl, NVL_MPXPATH, curpath);
? NVL_MPXPATH : NVL_PATH),
(void) nvlist_lookup_string(thisdevnvl, NVL_MPXPATH,
((mpxenp == B_TRUE) ? NVL_MPXPATH : NVL_PATH)),