== sanity-flr test 71: check mirror extend parent fid ==== 17:21:37 (1738966897)
striped dir -i1 -c2 -H crush /mnt/lustre/d71.sanity-flr
 ** lfs fid2path /mnt/lustre [0x240000404:0x7e:0x0]
/mnt/lustre/d71.sanity-flr/f71.sanity-flr