== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 00:36:29 (1764740189)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       17568     1253736   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       24776     1246528   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       22612     3584408   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       22876     3584144   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       45488     7168552   1%  /mnt/lustre