== sanity-flr test 71: check mirror extend parent fid ==== 03:39:10 (1749541150)
striped dir -i1 -c2 -H crush /mnt/lustre/d71.sanity-flr
 ** lfs fid2path /mnt/lustre [0x240000404:0x9ec:0x0]
/mnt/lustre/d71.sanity-flr/f71.sanity-flr