== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 16:14:22 (1758744862)
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID      1414116       24808     1262880   2% /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       21984     1265704   2% /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       22816     3584204   1% /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       22712     3584308   1% /mnt/lustre[OST:1]

filesystem_summary:      7666232       45528     7168512   1% /mnt/lustre