== sanity-flr test 71: check mirror extend parent fid ==== 15:14:47 (1746126887)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d71.sanity-flr
 ** lfs fid2path /mnt/lustre [0x240000403:0x58d:0x0]
/mnt/lustre/d71.sanity-flr/f71.sanity-flr