== sanity-flr test 71: check mirror extend parent fid ==== 07:48:18 (1786016898)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d71.sanity-flr
 ** lfs fid2path /mnt/lustre 0x200000405:0x17d:0x0
/mnt/lustre/d71.sanity-flr/f71.sanity-flr