ms_libconv_to_physical
phyblk = ms_libconv_to_physical(info, logblk);
newblk = ms_libconv_to_physical(info, extdat.logadr);
phyblk = ms_libconv_to_physical(info, logblk);
oldphy = ms_libconv_to_physical(info, PhyBlockAddr); /* need check us <-> info */